Add Chromium-only Blender WebEngine parity work

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mes123456
2026-08-12 04:47:48 -04:00
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/* SPDX-FileCopyrightText: 2016 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup intern_mantaflow
*/
#include <string>
//////////////////////////////////////////////////////////////////////
// LIBRARIES
//////////////////////////////////////////////////////////////////////
const std::string manta_import =
"\
from manta import *\n\
from math import inf\n\
import os.path, shutil, math, sys, gc, multiprocessing, platform, time\n\
\n\
withMPBake = False # Bake files asynchronously\n\
withMPSave = False # Save files asynchronously\n\
isWindows = platform.system() != 'Darwin' and platform.system() != 'Linux'\n\
# TODO(sebbas): Use this to simulate Windows multiprocessing (has default mode spawn)\n\
#try:\n\
# multiprocessing.set_start_method('spawn')\n\
#except:\n\
# pass\n";
//////////////////////////////////////////////////////////////////////
// DEBUG
//////////////////////////////////////////////////////////////////////
const std::string manta_debuglevel =
"\n\
def set_manta_debuglevel(level):\n\
setDebugLevel(level=level)\n # level 0 = mute all output from manta\n";
//////////////////////////////////////////////////////////////////////
// SOLVERS
//////////////////////////////////////////////////////////////////////
const std::string fluid_solver =
"\n\
mantaMsg('Solver base')\n\
s$ID$ = Solver(name='solver_base$ID$', gridSize=gs_s$ID$, dim=dim_s$ID$)\n";
const std::string fluid_solver_noise =
"\n\
mantaMsg('Solver noise')\n\
sn$ID$ = Solver(name='solver_noise$ID$', gridSize=gs_sn$ID$)\n";
const std::string fluid_solver_mesh =
"\n\
mantaMsg('Solver mesh')\n\
sm$ID$ = Solver(name='solver_mesh$ID$', gridSize=gs_sm$ID$)\n";
const std::string fluid_solver_particles =
"\n\
mantaMsg('Solver particles')\n\
sp$ID$ = Solver(name='solver_particles$ID$', gridSize=gs_sp$ID$)\n";
const std::string fluid_solver_guiding =
"\n\
mantaMsg('Solver guiding')\n\
sg$ID$ = Solver(name='solver_guiding$ID$', gridSize=gs_sg$ID$)\n";
const std::string fluid_solver_viscosity =
"\n\
mantaMsg('Solver viscosity')\n\
sv$ID$ = Solver(name='solver_viscosity$ID$', gridSize=gs_sv$ID$, dim=dim_s$ID$)\n";
//////////////////////////////////////////////////////////////////////
// VARIABLES
//////////////////////////////////////////////////////////////////////
const std::string fluid_variables =
"\n\
mantaMsg('Fluid variables')\n\
dim_s$ID$ = $SOLVER_DIM$\n\
res_s$ID$ = $RES$\n\
gravity_s$ID$ = vec3($GRAVITY_X$, $GRAVITY_Y$, $GRAVITY_Z$) # in SI unit (e.g. m/s^2)\n\
gs_s$ID$ = vec3($RESX$, $RESY$, $RESZ$)\n\
maxVel_s$ID$ = 0\n\
\n\
domainClosed_s$ID$ = $DOMAIN_CLOSED$\n\
boundConditions_s$ID$ = '$BOUND_CONDITIONS$'\n\
boundaryWidth_s$ID$ = $BOUNDARY_WIDTH$\n\
deleteInObstacle_s$ID$ = $DELETE_IN_OBSTACLE$\n\
\n\
using_smoke_s$ID$ = $USING_SMOKE$\n\
using_liquid_s$ID$ = $USING_LIQUID$\n\
using_noise_s$ID$ = $USING_NOISE$\n\
using_adaptTime_s$ID$ = $USING_ADAPTIVETIME$\n\
using_obstacle_s$ID$ = $USING_OBSTACLE$\n\
using_guiding_s$ID$ = $USING_GUIDING$\n\
using_fractions_s$ID$ = $USING_FRACTIONS$\n\
using_invel_s$ID$ = $USING_INVEL$\n\
using_outflow_s$ID$ = $USING_OUTFLOW$\n\
using_sndparts_s$ID$ = $USING_SNDPARTS$\n\
using_speedvectors_s$ID$ = $USING_SPEEDVECTORS$\n\
using_diffusion_s$ID$ = $USING_DIFFUSION$\n\
\n\
# Fluid time params\n\
timeScale_s$ID$ = $TIME_SCALE$\n\
timeTotal_s$ID$ = $TIME_TOTAL$\n\
timePerFrame_s$ID$ = $TIME_PER_FRAME$\n\
\n\
# In Blender fluid.c: frame_length = DT_DEFAULT * (25.0 / fps) * time_scale\n\
# with DT_DEFAULT = 0.1\n\
frameLength_s$ID$ = $FRAME_LENGTH$\n\
frameLengthUnscaled_s$ID$ = frameLength_s$ID$ / timeScale_s$ID$\n\
frameLengthRaw_s$ID$ = 0.1 * 25 # dt = 0.1 at 25 fps\n\
\n\
dt0_s$ID$ = $DT$\n\
cflCond_s$ID$ = $CFL$\n\
timestepsMin_s$ID$ = $TIMESTEPS_MIN$\n\
timestepsMax_s$ID$ = $TIMESTEPS_MAX$\n\
\n\
# Start and stop for simulation\n\
current_frame_s$ID$ = $CURRENT_FRAME$\n\
start_frame_s$ID$ = $START_FRAME$\n\
end_frame_s$ID$ = $END_FRAME$\n\
\n\
# Fluid diffusion / viscosity\n\
domainSize_s$ID$ = $FLUID_DOMAIN_SIZE$ # longest domain side in meters\n\
kinViscosity_s$ID$ = $FLUID_VISCOSITY$ / (domainSize_s$ID$*domainSize_s$ID$) # kinematic viscosity in m^2/s\n\
\n\
# Factors to convert Blender units to Manta units\n\
ratioMetersToRes_s$ID$ = float(domainSize_s$ID$) / float(res_s$ID$) # [meters / cells]\n\
mantaMsg('1 Mantaflow cell is ' + str(ratioMetersToRes_s$ID$) + ' Blender length units long.')\n\
\n\
ratioResToBLength_s$ID$ = float(res_s$ID$) / float(domainSize_s$ID$) # [cells / blength] (blength: cm, m, or km, ... )\n\
mantaMsg('1 Blender length unit is ' + str(ratioResToBLength_s$ID$) + ' Mantaflow cells long.')\n\
\n\
ratioBTimeToTimestep_s$ID$ = float(1) / float(frameLengthRaw_s$ID$) # the time within 1 blender time unit, see also fluid.c\n\
mantaMsg('1 Blender time unit is ' + str(ratioBTimeToTimestep_s$ID$) + ' Mantaflow time units long.')\n\
\n\
ratioFrameToFramelength_s$ID$ = float(1) / float(frameLengthUnscaled_s$ID$ ) # the time within 1 frame\n\
mantaMsg('frame / frameLength is ' + str(ratioFrameToFramelength_s$ID$) + ' Mantaflow time units long.')\n\
\n\
scaleAcceleration_s$ID$ = ratioResToBLength_s$ID$ * (ratioBTimeToTimestep_s$ID$**2)# [meters/btime^2] to [cells/timestep^2] (btime: sec, min, or h, ...)\n\
mantaMsg('scaleAcceleration is ' + str(scaleAcceleration_s$ID$))\n\
\n\
scaleSpeedFrames_s$ID$ = ratioResToBLength_s$ID$ * ratioFrameToFramelength_s$ID$ # [blength/frame] to [cells/frameLength]\n\
mantaMsg('scaleSpeed is ' + str(scaleSpeedFrames_s$ID$))\n\
\n\
gravity_s$ID$ *= scaleAcceleration_s$ID$ # scale from world acceleration to cell based acceleration\n\
\n\
# OpenVDB options\n\
vdbCompression_s$ID$ = $COMPRESSION_OPENVDB$\n\
vdbPrecision_s$ID$ = $PRECISION_OPENVDB$\n\
vdbClip_s$ID$ = $CLIP_OPENVDB$\n\
\n\
# Cache file names\n\
file_data_s$ID$ = '$NAME_DATA$'\n\
file_noise_s$ID$ = '$NAME_NOISE$'\n\
file_mesh_s$ID$ = '$NAME_MESH$'\n\
file_meshvel_s$ID$ = '$NAME_MESH$'\n\
file_particles_s$ID$ = '$NAME_PARTICLES$'\n\
file_guiding_s$ID$ = '$NAME_GUIDING$'";
const std::string fluid_variables_noise =
"\n\
mantaMsg('Fluid variables noise')\n\
upres_sn$ID$ = $NOISE_SCALE$\n\
gs_sn$ID$ = vec3(upres_sn$ID$*gs_s$ID$.x, upres_sn$ID$*gs_s$ID$.y, upres_sn$ID$*gs_s$ID$.z)\n";
const std::string fluid_variables_mesh =
"\n\
mantaMsg('Fluid variables mesh')\n\
upres_sm$ID$ = $MESH_SCALE$\n\
gs_sm$ID$ = vec3(upres_sm$ID$*gs_s$ID$.x, upres_sm$ID$*gs_s$ID$.y, upres_sm$ID$*gs_s$ID$.z)\n";
const std::string fluid_variables_particles =
"\n\
mantaMsg('Fluid variables particles')\n\
upres_sp$ID$ = $PARTICLE_SCALE$\n\
gs_sp$ID$ = vec3(upres_sp$ID$*gs_s$ID$.x, upres_sp$ID$*gs_s$ID$.y, upres_sp$ID$*gs_s$ID$.z)\n";
const std::string fluid_variables_guiding =
"\n\
mantaMsg('Fluid variables guiding')\n\
gs_sg$ID$ = vec3($GUIDING_RESX$, $GUIDING_RESY$, $GUIDING_RESZ$)\n\
\n\
alpha_sg$ID$ = $GUIDING_ALPHA$\n\
beta_sg$ID$ = $GUIDING_BETA$\n\
gamma_sg$ID$ = $GUIDING_FACTOR$\n\
tau_sg$ID$ = 1.0\n\
sigma_sg$ID$ = 0.99/tau_sg$ID$\n\
theta_sg$ID$ = 1.0\n";
const std::string fluid_variables_viscosity =
"\n\
gs_sv$ID$ = vec3($RESX$*2, $RESY$*2, $RESZ$*2)\n";
const std::string fluid_with_obstacle =
"\n\
using_obstacle_s$ID$ = True\n";
const std::string fluid_with_guiding =
"\n\
using_guiding_s$ID$ = True\n";
const std::string fluid_with_fractions =
"\n\
using_fractions_s$ID$ = True\n";
const std::string fluid_with_invel =
"\n\
using_invel_s$ID$ = True\n";
const std::string fluid_with_outflow =
"\n\
using_outflow_s$ID$ = True\n";
const std::string fluid_with_sndparts =
"\n\
using_sndparts_s$ID$ = True\n";
//////////////////////////////////////////////////////////////////////
// ADAPTIVE TIME STEPPING
//////////////////////////////////////////////////////////////////////
const std::string fluid_time_stepping =
"\n\
mantaMsg('Fluid adaptive time stepping')\n\
s$ID$.frameLength = frameLength_s$ID$\n\
s$ID$.timestepMin = s$ID$.frameLength / max(1, timestepsMax_s$ID$)\n\
s$ID$.timestepMax = s$ID$.frameLength / max(1, timestepsMin_s$ID$)\n\
s$ID$.cfl = cflCond_s$ID$\n\
s$ID$.timePerFrame = timePerFrame_s$ID$\n\
s$ID$.timestep = dt0_s$ID$\n\
s$ID$.timeTotal = timeTotal_s$ID$\n\
#mantaMsg('timestep: ' + str(s$ID$.timestep) + ' // timPerFrame: ' + str(s$ID$.timePerFrame) + ' // frameLength: ' + str(s$ID$.frameLength) + ' // timeTotal: ' + str(s$ID$.timeTotal) )\n";
const std::string fluid_adapt_time_step =
"\n\
def fluid_adapt_time_step_$ID$():\n\
mantaMsg('Fluid adapt time step')\n\
\n\
# time params are animatable\n\
s$ID$.frameLength = frameLength_s$ID$\n\
s$ID$.cfl = cflCond_s$ID$\n\
s$ID$.timestepMin = s$ID$.frameLength / max(1, timestepsMax_s$ID$)\n\
s$ID$.timestepMax = s$ID$.frameLength / max(1, timestepsMin_s$ID$)\n\
\n\
# ensure that vel grid is full (remember: adaptive domain can reallocate solver)\n\
copyRealToVec3(sourceX=x_vel_s$ID$, sourceY=y_vel_s$ID$, sourceZ=z_vel_s$ID$, target=vel_s$ID$)\n\
maxVel_s$ID$ = vel_s$ID$.getMax() if vel_s$ID$ else 0\n\
if using_adaptTime_s$ID$:\n\
mantaMsg('Adapt timestep, maxvel: ' + str(maxVel_s$ID$))\n\
s$ID$.adaptTimestep(maxVel_s$ID$)\n";
//////////////////////////////////////////////////////////////////////
// GRIDS
//////////////////////////////////////////////////////////////////////
const std::string fluid_alloc =
"\n\
mantaMsg('Fluid alloc data')\n\
flags_s$ID$ = s$ID$.create(FlagGrid, name='$NAME_FLAGS$')\n\
vel_s$ID$ = s$ID$.create(MACGrid, name='$NAME_VELOCITY$', sparse=True)\n\
velTmp_s$ID$ = s$ID$.create(MACGrid, name='$NAME_VELOCITYTMP$', sparse=True)\n\
x_vel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_VELOCITY_X$')\n\
y_vel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_VELOCITY_Y$')\n\
z_vel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_VELOCITY_Z$')\n\
pressure_s$ID$ = s$ID$.create(RealGrid, name='$NAME_PRESSURE$')\n\
phiObs_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIOBS$')\n\
phiSIn_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHISIN$') # helper for static flow objects\n\
phiIn_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIIN$')\n\
phiOut_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIOUT$')\n\
forces_s$ID$ = s$ID$.create(Vec3Grid, name='$NAME_FORCES$')\n\
x_force_s$ID$ = s$ID$.create(RealGrid, name='$NAME_FORCES_X$')\n\
y_force_s$ID$ = s$ID$.create(RealGrid, name='$NAME_FORCES_Y$')\n\
z_force_s$ID$ = s$ID$.create(RealGrid, name='$NAME_FORCES_Z$')\n\
obvel_s$ID$ = None\n\
\n\
# Set some initial values\n\
phiObs_s$ID$.setConst(9999)\n\
phiSIn_s$ID$.setConst(9999)\n\
phiIn_s$ID$.setConst(9999)\n\
phiOut_s$ID$.setConst(9999)\n\
\n\
# Keep track of important objects in dict to load them later on\n\
fluid_data_dict_final_s$ID$ = { 'vel' : vel_s$ID$ }\n\
fluid_data_dict_resume_s$ID$ = { 'phiObs' : phiObs_s$ID$, 'phiIn' : phiIn_s$ID$, 'phiOut' : phiOut_s$ID$, 'flags' : flags_s$ID$, 'velTmp' : velTmp_s$ID$ }\n";
const std::string fluid_alloc_obstacle =
"\n\
mantaMsg('Allocating obstacle data')\n\
numObs_s$ID$ = s$ID$.create(RealGrid, name='$NAME_NUMOBS$')\n\
phiObsSIn_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIOBSSIN$') # helper for static obstacle objects\n\
phiObsIn_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIOBSIN$')\n\
obvel_s$ID$ = s$ID$.create(MACGrid, name='$NAME_OBVEL$')\n\
obvelC_s$ID$ = s$ID$.create(Vec3Grid, name='$NAME_OBVELC$')\n\
x_obvel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_OBVEL_X$')\n\
y_obvel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_OBVEL_Y$')\n\
z_obvel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_OBVEL_Z$')\n\
\n\
# Set some initial values\n\
phiObsSIn_s$ID$.setConst(9999)\n\
phiObsIn_s$ID$.setConst(9999)\n\
\n\
if 'fluid_data_dict_resume_s$ID$' in globals():\n\
fluid_data_dict_resume_s$ID$.update(phiObsIn=phiObsIn_s$ID$)\n";
const std::string fluid_alloc_guiding =
"\n\
mantaMsg('Allocating guiding data')\n\
velT_s$ID$ = s$ID$.create(MACGrid, name='$NAME_VELT$')\n\
weightGuide_s$ID$ = s$ID$.create(RealGrid, name='$NAME_WEIGHTGUIDE$')\n\
numGuides_s$ID$ = s$ID$.create(RealGrid, name='$NAME_NUMGUIDES$')\n\
phiGuideIn_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIGUIDEIN$')\n\
guidevelC_s$ID$ = s$ID$.create(Vec3Grid, name='$NAME_GUIDEVELC$')\n\
x_guidevel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_GUIDEVEL_X$')\n\
y_guidevel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_GUIDEVEL_Y$')\n\
z_guidevel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_GUIDEVEL_Z$')\n\
\n\
# Final guide vel grid needs to have independent size\n\
guidevel_sg$ID$ = sg$ID$.create(MACGrid, name='$NAME_VELOCITY_GUIDE$')\n\
\n\
# Keep track of important objects in dict to load them later on\n\
fluid_guiding_dict_s$ID$ = { 'guidevel' : guidevel_sg$ID$ }\n";
const std::string fluid_alloc_fractions =
"\n\
mantaMsg('Allocating fractions data')\n\
fractions_s$ID$ = s$ID$.create(MACGrid, name='$NAME_FRACTIONS$')\n";
const std::string fluid_alloc_invel =
"\n\
mantaMsg('Allocating initial velocity data')\n\
invelC_s$ID$ = s$ID$.create(VecGrid, name='$NAME_INVELC$')\n\
x_invel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_INVEL_X$')\n\
y_invel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_INVEL_Y$')\n\
z_invel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_INVEL_Z$')\n";
const std::string fluid_alloc_outflow =
"\n\
mantaMsg('Allocating outflow data')\n\
phiOutSIn_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIOUTSIN$') # helper for static outflow objects\n\
phiOutIn_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIOUTIN$')\n\
\n\
# Set some initial values\n\
phiOutSIn_s$ID$.setConst(9999)\n\
phiOutIn_s$ID$.setConst(9999)\n\
\n\
if 'fluid_data_dict_resume_s$ID$' in globals():\n\
fluid_data_dict_resume_s$ID$.update(phiOutIn=phiOutIn_s$ID$)\n";
//////////////////////////////////////////////////////////////////////
// PRE / POST STEP
//////////////////////////////////////////////////////////////////////
const std::string fluid_pre_step =
"\n\
def fluid_pre_step_$ID$():\n\
mantaMsg('Fluid pre step')\n\
\n\
phiObs_s$ID$.setConst(9999)\n\
phiOut_s$ID$.setConst(9999)\n\
\n\
# Main vel grid is copied in adapt time step function\n\
\n\
if using_obstacle_s$ID$:\n\
# Average out velocities from multiple obstacle objects at one cell\n\
x_obvel_s$ID$.safeDivide(numObs_s$ID$)\n\
y_obvel_s$ID$.safeDivide(numObs_s$ID$)\n\
z_obvel_s$ID$.safeDivide(numObs_s$ID$)\n\
copyRealToVec3(sourceX=x_obvel_s$ID$, sourceY=y_obvel_s$ID$, sourceZ=z_obvel_s$ID$, target=obvelC_s$ID$)\n\
\n\
if using_invel_s$ID$:\n\
copyRealToVec3(sourceX=x_invel_s$ID$, sourceY=y_invel_s$ID$, sourceZ=z_invel_s$ID$, target=invelC_s$ID$)\n\
\n\
if using_guiding_s$ID$:\n\
weightGuide_s$ID$.multConst(0)\n\
weightGuide_s$ID$.addConst(alpha_sg$ID$)\n\
interpolateMACGrid(source=guidevel_sg$ID$, target=velT_s$ID$)\n\
velT_s$ID$.multConst(vec3(gamma_sg$ID$))\n\
\n\
x_force_s$ID$.multConst(scaleSpeedFrames_s$ID$)\n\
y_force_s$ID$.multConst(scaleSpeedFrames_s$ID$)\n\
z_force_s$ID$.multConst(scaleSpeedFrames_s$ID$)\n\
copyRealToVec3(sourceX=x_force_s$ID$, sourceY=y_force_s$ID$, sourceZ=z_force_s$ID$, target=forces_s$ID$)\n\
\n\
# If obstacle has velocity, i.e. is a moving obstacle, switch to dynamic preconditioner\n\
if using_smoke_s$ID$ and using_obstacle_s$ID$ and obvelC_s$ID$.getMax() > 0:\n\
mantaMsg('Using dynamic preconditioner')\n\
preconditioner_s$ID$ = PcMGDynamic\n\
else:\n\
mantaMsg('Using static preconditioner')\n\
preconditioner_s$ID$ = PcMGStatic\n";
const std::string fluid_post_step =
"\n\
def fluid_post_step_$ID$():\n\
mantaMsg('Fluid post step')\n\
\n\
# Copy vel grid to reals grids (which Blender internal will in turn use for vel access)\n\
copyVec3ToReal(source=vel_s$ID$, targetX=x_vel_s$ID$, targetY=y_vel_s$ID$, targetZ=z_vel_s$ID$)\n\
if using_guiding_s$ID$:\n\
copyVec3ToReal(source=guidevel_sg$ID$, targetX=x_guidevel_s$ID$, targetY=y_guidevel_s$ID$, targetZ=z_guidevel_s$ID$)\n";
//////////////////////////////////////////////////////////////////////
// DESTRUCTION
//////////////////////////////////////////////////////////////////////
const std::string fluid_delete_all =
"\n\
mantaMsg('Deleting fluid')\n\
# Clear all helper dictionaries first\n\
mantaMsg('Clear helper dictionaries')\n\
if 'liquid_data_dict_final_s$ID$' in globals(): liquid_data_dict_final_s$ID$.clear()\n\
if 'liquid_data_dict_resume_s$ID$' in globals(): liquid_data_dict_resume_s$ID$.clear()\n\
if 'liquid_mesh_dict_s$ID$' in globals(): liquid_mesh_dict_s$ID$.clear()\n\
if 'liquid_meshvel_dict_s$ID$' in globals(): liquid_meshvel_dict_s$ID$.clear()\n\
if 'liquid_particles_final_dict_s$ID$' in globals(): liquid_particles_final_dict_s$ID$.clear()\n\
if 'liquid_particles_resume_dict_s$ID$' in globals(): liquid_particles_resume_dict_s$ID$.clear()\n\
\n\
if 'smoke_data_dict_final_s$ID$' in globals(): smoke_data_dict_final_s$ID$.clear()\n\
if 'smoke_data_dict_resume_s$ID$' in globals(): smoke_data_dict_resume_s$ID$.clear()\n\
if 'smoke_noise_dict_final_s$ID$' in globals(): smoke_noise_dict_final_s$ID$.clear()\n\
if 'smoke_noise_dict_resume_s$ID$' in globals(): smoke_noise_dict_resume_s$ID$.clear()\n\
\n\
if 'fluid_data_dict_final_s$ID$' in globals(): fluid_data_dict_final_s$ID$.clear()\n\
if 'fluid_data_dict_resume_s$ID$' in globals(): fluid_data_dict_resume_s$ID$.clear()\n\
if 'fluid_guiding_dict_s$ID$' in globals(): fluid_guiding_dict_s$ID$.clear()\n\
if 'fluid_vel_dict_s$ID$' in globals(): fluid_vel_dict_s$ID$.clear()\n\
\n\
# Delete all children from objects (e.g. pdata for particles)\n\
mantaMsg('Release solver childrens children')\n\
for var in list(globals()):\n\
if var.endswith('_pp$ID$') or var.endswith('_mesh$ID$'):\n\
del globals()[var]\n\
\n\
# Now delete children from solver objects\n\
mantaMsg('Release solver children')\n\
for var in list(globals()):\n\
if var.endswith('_s$ID$') or var.endswith('_sn$ID$') or var.endswith('_sm$ID$') or var.endswith('_sp$ID$') or var.endswith('_sg$ID$'):\n\
del globals()[var]\n\
\n\
# Extra cleanup for multigrid and fluid guiding\n\
mantaMsg('Release multigrid')\n\
if 's$ID$' in globals(): releaseMG(s$ID$)\n\
if 'sn$ID$' in globals(): releaseMG(sn$ID$)\n\
mantaMsg('Release fluid guiding')\n\
releaseBlurPrecomp()\n\
\n\
# Release unreferenced memory (if there is some left, can in fact happen)\n\
gc.collect()\n\
\n\
# Now it is safe to delete solver objects (always need to be deleted last)\n\
mantaMsg('Delete base solver')\n\
if 's$ID$' in globals(): del s$ID$\n\
mantaMsg('Delete noise solver')\n\
if 'sn$ID$' in globals(): del sn$ID$\n\
mantaMsg('Delete mesh solver')\n\
if 'sm$ID$' in globals(): del sm$ID$\n\
mantaMsg('Delete particle solver')\n\
if 'sp$ID$' in globals(): del sp$ID$\n\
mantaMsg('Delete guiding solver')\n\
if 'sg$ID$' in globals(): del sg$ID$\n\
\n\
# Release unreferenced memory (if there is some left)\n\
gc.collect()\n";
//////////////////////////////////////////////////////////////////////
// BAKE
//////////////////////////////////////////////////////////////////////
/* This has to match the behavior of BLI_path_frame,
* for positive and negative frame numbers. */
const std::string fluid_cache_helper =
"\n\
def fluid_cache_get_framenr_formatted_$ID$(framenr):\n\
return str(framenr).zfill(4) if framenr >= 0 else str(framenr).zfill(5)\n";
const std::string fluid_bake_multiprocessing =
"\n\
def fluid_cache_multiprocessing_start_$ID$(function, framenr, file_name=None, format_data=None, format_noise=None, format_mesh=None, format_particles=None, format_guiding=None, path_data=None, path_noise=None, path_mesh=None, path_particles=None, path_guiding=None, dict=None, do_join=True, resumable=False):\n\
mantaMsg('Multiprocessing cache')\n\
if __name__ == '__main__':\n\
args = (framenr,)\n\
if file_name:\n\
args += (file_name,)\n\
if format_data:\n\
args += (format_data,)\n\
if format_noise:\n\
args += (format_noise,)\n\
if format_mesh:\n\
args += (format_mesh,)\n\
if format_particles:\n\
args += (format_particles,)\n\
if format_guiding:\n\
args += (format_guiding,)\n\
if path_data:\n\
args += (path_data,)\n\
if path_noise:\n\
args += (path_noise,)\n\
if path_mesh:\n\
args += (path_mesh,)\n\
if path_particles:\n\
args += (path_particles,)\n\
if path_guiding:\n\
args += (path_guiding,)\n\
if dict:\n\
args += (dict,)\n\
args += (resumable,)\n\
p$ID$ = multiprocessing.Process(target=function, args=args)\n\
p$ID$.start()\n\
if do_join:\n\
p$ID$.join()\n";
const std::string fluid_bake_data =
"\n\
def bake_fluid_process_data_$ID$(framenr, format_data, path_data):\n\
mantaMsg('Bake fluid data')\n\
\n\
s$ID$.frame = framenr\n\
s$ID$.frameLength = frameLength_s$ID$\n\
s$ID$.timeTotal = timeTotal_s$ID$\n\
\n\
start_time = time.time()\n\
if using_smoke_s$ID$:\n\
smoke_adaptive_step_$ID$(framenr)\n\
if using_liquid_s$ID$:\n\
liquid_adaptive_step_$ID$(framenr)\n\
mantaMsg('--- Step: %s seconds ---' % (time.time() - start_time))\n\
\n\
def bake_fluid_data_$ID$(path_data, framenr, format_data):\n\
if not withMPBake or isWindows:\n\
bake_fluid_process_data_$ID$(framenr, format_data, path_data)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=bake_fluid_process_data_$ID$, framenr=framenr, format_data=format_data, path_data=path_data, do_join=False)\n";
const std::string fluid_bake_noise =
"\n\
def bake_noise_process_$ID$(framenr, format_noise, path_noise):\n\
mantaMsg('Bake fluid noise')\n\
\n\
sn$ID$.frame = framenr\n\
sn$ID$.frameLength = frameLength_s$ID$\n\
sn$ID$.timeTotal = timeTotal_s$ID$\n\
sn$ID$.timestep = frameLength_s$ID$ # no adaptive timestep for noise\n\
\n\
smoke_step_noise_$ID$(framenr)\n\
\n\
def bake_noise_$ID$(path_noise, framenr, format_noise):\n\
if not withMPBake or isWindows:\n\
bake_noise_process_$ID$(framenr, format_noise, path_noise)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=bake_noise_process_$ID$, framenr=framenr, format_noise=format_noise, path_noise=path_noise)\n";
const std::string fluid_bake_mesh =
"\n\
def bake_mesh_process_$ID$(framenr, format_data, format_mesh, path_mesh):\n\
mantaMsg('Bake fluid mesh')\n\
\n\
sm$ID$.frame = framenr\n\
sm$ID$.frameLength = frameLength_s$ID$\n\
sm$ID$.timeTotal = timeTotal_s$ID$\n\
sm$ID$.timestep = frameLength_s$ID$ # no adaptive timestep for mesh\n\
\n\
#if using_smoke_s$ID$:\n\
# TODO(sebbas): Future update could include smoke mesh (vortex sheets)\n\
if using_liquid_s$ID$:\n\
liquid_step_mesh_$ID$()\n\
liquid_save_mesh_$ID$(path_mesh, framenr, format_mesh)\n\
if using_speedvectors_s$ID$:\n\
liquid_save_meshvel_$ID$(path_mesh, framenr, format_data)\n\
\n\
def bake_mesh_$ID$(path_mesh, framenr, format_data, format_mesh):\n\
if not withMPBake or isWindows:\n\
bake_mesh_process_$ID$(framenr, format_data, format_mesh, path_mesh)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=bake_mesh_process_$ID$, framenr=framenr, format_data=format_data, format_mesh=format_mesh, path_mesh=path_mesh)\n";
const std::string fluid_bake_particles =
"\n\
def bake_particles_process_$ID$(framenr, format_particles, path_particles, resumable):\n\
mantaMsg('Bake secondary particles')\n\
\n\
sp$ID$.frame = framenr\n\
sp$ID$.frameLength = frameLength_s$ID$\n\
sp$ID$.timeTotal = timeTotal_s$ID$\n\
sp$ID$.timestep = frameLength_s$ID$ # no adaptive timestep for particles\n\
\n\
#if using_smoke_s$ID$:\n\
# TODO(sebbas): Future update could include smoke particles (e.g. fire sparks)\n\
if using_liquid_s$ID$:\n\
liquid_step_particles_$ID$()\n\
liquid_save_particles_$ID$(path_particles, framenr, format_particles, resumable)\n\
\n\
def bake_particles_$ID$(path_particles, framenr, format_particles, resumable):\n\
if not withMPBake or isWindows:\n\
bake_particles_process_$ID$(framenr, format_particles, path_particles, resumable)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=bake_particles_process_$ID$, framenr=framenr, format_particles=format_particles, path_particles=path_particles, resumable=resumable)\n";
const std::string fluid_bake_guiding =
"\n\
def bake_guiding_process_$ID$(framenr, format_guiding, path_guiding, resumable):\n\
mantaMsg('Bake fluid guiding')\n\
\n\
# Average out velocities from multiple guiding objects at one cell\n\
x_guidevel_s$ID$.safeDivide(numGuides_s$ID$)\n\
y_guidevel_s$ID$.safeDivide(numGuides_s$ID$)\n\
z_guidevel_s$ID$.safeDivide(numGuides_s$ID$)\n\
copyRealToVec3(sourceX=x_guidevel_s$ID$, sourceY=y_guidevel_s$ID$, sourceZ=z_guidevel_s$ID$, target=guidevelC_s$ID$)\n\
\n\
mantaMsg('Extrapolating guiding velocity')\n\
# ensure velocities inside of guiding object, slightly add guiding vels outside of object too\n\
extrapolateVec3Simple(vel=guidevelC_s$ID$, phi=phiGuideIn_s$ID$, distance=6, inside=True)\n\
extrapolateVec3Simple(vel=guidevelC_s$ID$, phi=phiGuideIn_s$ID$, distance=3, inside=False)\n\
resampleVec3ToMac(source=guidevelC_s$ID$, target=guidevel_sg$ID$)\n\
\n\
fluid_save_guiding_$ID$(path_guiding, framenr, format_guiding, resumable)\n\
\n\
def bake_guiding_$ID$(path_guiding, framenr, format_guiding, resumable):\n\
if not withMPBake or isWindows:\n\
bake_guiding_process_$ID$(framenr, format_guiding, path_guiding, resumable)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=bake_guiding_process_$ID$, framenr=framenr, format_guiding=format_guiding, path_guiding=path_guiding, resumable=resumable)\n";
//////////////////////////////////////////////////////////////////////
// IMPORT
//////////////////////////////////////////////////////////////////////
const std::string fluid_file_import =
"\n\
def fluid_file_import_s$ID$(dict, path, framenr, file_format, file_name=None):\n\
mantaMsg('Fluid file import, frame: ' + str(framenr))\n\
try:\n\
framenr = fluid_cache_get_framenr_formatted_$ID$(framenr)\n\
# New cache: Try to load the data from a single file\n\
loadCombined = 0\n\
if file_name is not None:\n\
file = os.path.join(path, file_name + '_' + framenr + file_format)\n\
if os.path.isfile(file):\n\
if file_format == '.vdb':\n\
loadCombined = load(name=file, objects=list(dict.values()), worldSize=domainSize_s$ID$)\n\
elif file_format == '.bobj.gz' or file_format == '.obj':\n\
for name, object in dict.items():\n\
if os.path.isfile(file):\n\
loadCombined = object.load(file)\n\
\n\
# Old cache: Try to load the data from separate files, i.e. per object with the object based load() function\n\
if not loadCombined:\n\
for name, object in dict.items():\n\
file = os.path.join(path, name + '_' + framenr + file_format)\n\
if os.path.isfile(file):\n\
loadCombined = object.load(file)\n\
\n\
if not loadCombined:\n\
mantaMsg('Could not load file ' + str(file))\n\
\n\
except Exception as e:\n\
mantaMsg('Exception in Python fluid file import: ' + str(e))\n\
pass # Just skip file load errors for now\n";
const std::string fluid_load_guiding =
"\n\
def fluid_load_guiding_$ID$(path, framenr, file_format):\n\
mantaMsg('Fluid load guiding, frame ' + str(framenr))\n\
guidevel_sg$ID$.setName('$NAME_VELOCITY_GUIDE$')\n\
fluid_file_import_s$ID$(dict=fluid_guiding_dict_s$ID$, path=path, framenr=framenr, file_format=file_format, file_name=file_guiding_s$ID$)\n\
\n\
copyVec3ToReal(source=guidevel_sg$ID$, targetX=x_guidevel_s$ID$, targetY=y_guidevel_s$ID$, targetZ=z_guidevel_s$ID$)\n";
const std::string fluid_load_vel =
"\n\
def fluid_load_vel_$ID$(path, framenr, file_format):\n\
mantaMsg('Fluid load vel, frame ' + str(framenr))\n\
guidevel_sg$ID$.setName('$NAME_VELOCITY$') # for loading data the guidevel grid will pretend to be the vel grid\n\
fluid_vel_dict_s$ID$ = { 'vel' : guidevel_sg$ID$ }\n\
fluid_file_import_s$ID$(dict=fluid_vel_dict_s$ID$, path=path, framenr=framenr, file_format=file_format, file_name=file_data_s$ID$)\n";
//////////////////////////////////////////////////////////////////////
// EXPORT
//////////////////////////////////////////////////////////////////////
const std::string fluid_file_export =
"\n\
def fluid_file_export_s$ID$(framenr, file_format, path, dict, file_name=None, mode_override=True, skip_subframes=True, clipGrid=None):\n\
if skip_subframes and ((timePerFrame_s$ID$ + dt0_s$ID$) < frameLength_s$ID$):\n\
return\n\
mantaMsg('Fluid file export, frame: ' + str(framenr))\n\
try:\n\
framenr = fluid_cache_get_framenr_formatted_$ID$(framenr)\n\
if not os.path.exists(path):\n\
os.makedirs(path)\n\
\n\
# New cache: Try to save the data to a single file\n\
saveCombined = 0\n\
if file_name is not None:\n\
file = os.path.join(path, file_name + '_' + framenr + file_format)\n\
if not os.path.isfile(file) or mode_override:\n\
if file_format == '.vdb':\n\
saveCombined = save(name=file, objects=list(dict.values()), worldSize=domainSize_s$ID$, skipDeletedParts=True, compression=vdbCompression_s$ID$, precision=vdbPrecision_s$ID$, clip=vdbClip_s$ID$, clipGrid=clipGrid, meta=True)\n\
elif file_format == '.bobj.gz' or file_format == '.obj':\n\
for name, object in dict.items():\n\
if not os.path.isfile(file) or mode_override:\n\
saveCombined = object.save(file)\n\
\n\
# Old cache: Try to save the data to separate files, i.e. per object with the object based save() function\n\
if not saveCombined:\n\
for name, object in dict.items():\n\
file = os.path.join(path, name + '_' + framenr + file_format)\n\
if not os.path.isfile(file) or mode_override: object.save(file)\n\
\n\
except Exception as e:\n\
mantaMsg('Exception in Python fluid file export: ' + str(e))\n\
pass # Just skip file save errors for now\n";
const std::string fluid_save_guiding =
"\n\
def fluid_save_guiding_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Fluid save guiding, frame ' + str(framenr))\n\
dict = fluid_guiding_dict_s$ID$\n\
if not withMPSave or isWindows:\n\
fluid_file_export_s$ID$(dict=dict, framenr=framenr, file_format=file_format, path=path, file_name=file_guiding_s$ID$)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=fluid_file_export_s$ID$, file_name=file_guiding_s$ID$, framenr=framenr, format_data=file_format, path_data=path, dict=dict, do_join=False)\n";
//////////////////////////////////////////////////////////////////////
// STANDALONE MODE
//////////////////////////////////////////////////////////////////////
const std::string fluid_standalone =
"\n\
gui = None\n\
if (GUI):\n\
gui=Gui()\n\
gui.show()\n\
gui.pause()\n\
\n\
cache_resumable = $CACHE_RESUMABLE$\n\
cache_dir = '$CACHE_DIR$'\n\
file_format_data = '$CACHE_DATA_FORMAT$'\n\
file_format_mesh = '$CACHE_MESH_FORMAT$'\n\
\n\
# How many frame to load from cache\n\
from_cache_count = 100\n\
\n\
loop_count = 0\n\
while current_frame_s$ID$ <= end_frame_s$ID$:\n\
\n\
# Load already simulated data from cache:\n\
if loop_count < from_cache_count:\n\
load_data(current_frame_s$ID$, cache_resumable)\n\
\n\
# Otherwise simulate new data\n\
else:\n\
while(s$ID$.frame <= current_frame_s$ID$):\n\
if using_adaptTime_s$ID$:\n\
fluid_adapt_time_step_$ID$()\n\
step(current_frame_s$ID$)\n\
\n\
current_frame_s$ID$ += 1\n\
loop_count += 1\n\
\n\
if gui:\n\
gui.pause()\n";
//////////////////////////////////////////////////////////////////////
// SCRIPT SECTION HEADERS
//////////////////////////////////////////////////////////////////////
const std::string header_libraries =
"\n\
######################################################################\n\
## LIBRARIES\n\
######################################################################\n";
const std::string header_main =
"\n\
######################################################################\n\
## MAIN\n\
######################################################################\n";
const std::string header_prepost =
"\n\
######################################################################\n\
## PRE/POST STEPS\n\
######################################################################\n";
const std::string header_steps =
"\n\
######################################################################\n\
## STEPS\n\
######################################################################\n";
const std::string header_import =
"\n\
######################################################################\n\
## IMPORT\n\
######################################################################\n";
const std::string header_grids =
"\n\
######################################################################\n\
## GRIDS\n\
######################################################################\n";
const std::string header_solvers =
"\n\
######################################################################\n\
## SOLVERS\n\
######################################################################\n";
const std::string header_variables =
"\n\
######################################################################\n\
## VARIABLES\n\
######################################################################\n";
const std::string header_time =
"\n\
######################################################################\n\
## ADAPTIVE TIME\n\
######################################################################\n";
const std::string header_gridinit =
"\n\
######################################################################\n\
## DOMAIN INIT\n\
######################################################################\n";

View File

@@ -0,0 +1,514 @@
/* SPDX-FileCopyrightText: 2016 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup intern_mantaflow
*/
#include <string>
//////////////////////////////////////////////////////////////////////
// VARIABLES
//////////////////////////////////////////////////////////////////////
const std::string liquid_variables =
"\n\
mantaMsg('Liquid variables')\n\
narrowBandWidth_s$ID$ = 3\n\
combineBandWidth_s$ID$ = narrowBandWidth_s$ID$ - 1\n\
adjustedNarrowBandWidth_s$ID$ = $PARTICLE_BAND_WIDTH$ # only used in adjustNumber to control band width\n\
particleNumber_s$ID$ = $PARTICLE_NUMBER$\n\
minParticles_s$ID$ = $PARTICLE_MINIMUM$\n\
maxParticles_s$ID$ = $PARTICLE_MAXIMUM$\n\
radiusFactor_s$ID$ = $PARTICLE_RADIUS$\n\
using_mesh_s$ID$ = $USING_MESH$\n\
using_final_mesh_s$ID$ = $USING_IMPROVED_MESH$\n\
using_fractions_s$ID$ = $USING_FRACTIONS$\n\
using_apic_s$ID$ = $USING_APIC$\n\
using_viscosity_s$ID$ = $USING_VISCOSITY$\n\
fracThreshold_s$ID$ = $FRACTIONS_THRESHOLD$\n\
fracDistance_s$ID$ = $FRACTIONS_DISTANCE$\n\
flipRatio_s$ID$ = $FLIP_RATIO$\n\
concaveUpper_s$ID$ = $MESH_CONCAVE_UPPER$\n\
concaveLower_s$ID$ = $MESH_CONCAVE_LOWER$\n\
meshRadiusFactor_s$ID$ = $MESH_PARTICLE_RADIUS$\n\
smoothenPos_s$ID$ = $MESH_SMOOTHEN_POS$\n\
smoothenNeg_s$ID$ = $MESH_SMOOTHEN_NEG$\n\
randomness_s$ID$ = $PARTICLE_RANDOMNESS$\n\
surfaceTension_s$ID$ = $LIQUID_SURFACE_TENSION$\n\
maxSysParticles_s$ID$ = $PP_PARTICLE_MAXIMUM$\n\
viscosityValue_s$ID$ = $VISCOSITY_VALUE$\n";
const std::string liquid_variables_particles =
"\n\
tauMin_wc_sp$ID$ = $SNDPARTICLE_TAU_MIN_WC$\n\
tauMax_wc_sp$ID$ = $SNDPARTICLE_TAU_MAX_WC$\n\
tauMin_ta_sp$ID$ = $SNDPARTICLE_TAU_MIN_TA$\n\
tauMax_ta_sp$ID$ = $SNDPARTICLE_TAU_MAX_TA$\n\
tauMin_k_sp$ID$ = $SNDPARTICLE_TAU_MIN_K$\n\
tauMax_k_sp$ID$ = $SNDPARTICLE_TAU_MAX_K$\n\
k_wc_sp$ID$ = $SNDPARTICLE_K_WC$\n\
k_ta_sp$ID$ = $SNDPARTICLE_K_TA$\n\
k_b_sp$ID$ = $SNDPARTICLE_K_B$\n\
k_d_sp$ID$ = $SNDPARTICLE_K_D$\n\
lMin_sp$ID$ = $SNDPARTICLE_L_MIN$\n\
lMax_sp$ID$ = $SNDPARTICLE_L_MAX$\n\
c_s_sp$ID$ = 0.4 # classification constant for snd parts\n\
c_b_sp$ID$ = 0.77 # classification constant for snd parts\n\
pot_radius_sp$ID$ = $SNDPARTICLE_POTENTIAL_RADIUS$\n\
update_radius_sp$ID$ = $SNDPARTICLE_UPDATE_RADIUS$\n\
using_snd_pushout_sp$ID$ = $SNDPARTICLE_BOUNDARY_PUSHOUT$\n";
//////////////////////////////////////////////////////////////////////
// GRIDS & MESH & PARTICLESYSTEM
//////////////////////////////////////////////////////////////////////
const std::string liquid_alloc =
"\n\
mantaMsg('Liquid alloc')\n\
phiParts_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHIPARTS$')\n\
phi_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHI$')\n\
phiTmp_s$ID$ = s$ID$.create(LevelsetGrid, name='$NAME_PHITMP$')\n\
velOld_s$ID$ = s$ID$.create(MACGrid, name='$NAME_VELOLD$')\n\
velParts_s$ID$ = s$ID$.create(MACGrid, name='$NAME_VELPARTS$')\n\
mapWeights_s$ID$ = s$ID$.create(MACGrid, name='$NAME_MAPWEIGHTS$')\n\
fractions_s$ID$ = None # allocated dynamically\n\
curvature_s$ID$ = None\n\
\n\
pp_s$ID$ = s$ID$.create(BasicParticleSystem, name='$NAME_PARTS$')\n\
pVel_pp$ID$ = pp_s$ID$.create(PdataVec3, name='$NAME_PARTSVELOCITY$')\n\
\n\
pCx_pp$ID$ = None\n\
pCy_pp$ID$ = None\n\
pCz_pp$ID$ = None\n\
if using_apic_s$ID$:\n\
pCx_pp$ID$ = pp_s$ID$.create(PdataVec3)\n\
pCy_pp$ID$ = pp_s$ID$.create(PdataVec3)\n\
pCz_pp$ID$ = pp_s$ID$.create(PdataVec3)\n\
\n\
# Acceleration data for particle nbs\n\
pindex_s$ID$ = s$ID$.create(ParticleIndexSystem, name='$NAME_PINDEX$')\n\
gpi_s$ID$ = s$ID$.create(IntGrid, name='$NAME_GPI$')\n\
\n\
# Keep track of important objects in dict to load them later on\n\
liquid_data_dict_final_s$ID$ = { 'pVel' : pVel_pp$ID$, 'pp' : pp_s$ID$ }\n\
liquid_data_dict_resume_s$ID$ = { 'phiParts' : phiParts_s$ID$, 'phi' : phi_s$ID$, 'phiTmp' : phiTmp_s$ID$ }\n";
const std::string liquid_alloc_mesh =
"\n\
mantaMsg('Liquid alloc mesh')\n\
phiParts_sm$ID$ = sm$ID$.create(LevelsetGrid, name='$NAME_PHIPARTS_MESH$')\n\
phi_sm$ID$ = sm$ID$.create(LevelsetGrid, name='$NAME_PHI_MESH$')\n\
pp_sm$ID$ = sm$ID$.create(BasicParticleSystem, name='$NAME_PP_MESH$')\n\
flags_sm$ID$ = sm$ID$.create(FlagGrid, name='$NAME_FLAGS_MESH$')\n\
mesh_sm$ID$ = sm$ID$.create(Mesh, name='$NAME_MESH$')\n\
\n\
if using_speedvectors_s$ID$:\n\
mVel_mesh$ID$ = mesh_sm$ID$.create(MdataVec3, name='$NAME_VELOCITYVEC_MESH$')\n\
vel_sm$ID$ = sm$ID$.create(MACGrid, name='$NAME_VELOCITY_MESH$')\n\
\n\
# Acceleration data for particle nbs\n\
pindex_sm$ID$ = sm$ID$.create(ParticleIndexSystem, name='$NAME_PINDEX_MESH$')\n\
gpi_sm$ID$ = sm$ID$.create(IntGrid, name='$NAME_GPI_MESH$')\n\
\n\
# Set some initial values\n\
phiParts_sm$ID$.setConst(9999)\n\
phi_sm$ID$.setConst(9999)\n\
\n\
# Keep track of important objects in dict to load them later on\n\
liquid_mesh_dict_s$ID$ = { 'lMesh' : mesh_sm$ID$ }\n\
\n\
if using_speedvectors_s$ID$:\n\
liquid_meshvel_dict_s$ID$ = { 'lVelMesh' : mVel_mesh$ID$ }\n";
const std::string liquid_alloc_viscosity =
"\n\
# Viscosity grids\n\
volumes_s$ID$ = sv$ID$.create(RealGrid)\n\
viscosity_s$ID$ = s$ID$.create(RealGrid)\n\
viscosity_s$ID$.setConst(viscosityValue_s$ID$)\n";
const std::string liquid_alloc_curvature =
"\n\
mantaMsg('Liquid alloc curvature')\n\
curvature_s$ID$ = s$ID$.create(RealGrid, name='$NAME_CURVATURE$')\n";
const std::string liquid_alloc_particles =
"\n\
ppSnd_sp$ID$ = sp$ID$.create(BasicParticleSystem, name='$NAME_PARTS_PARTICLES$')\n\
pVelSnd_pp$ID$ = ppSnd_sp$ID$.create(PdataVec3, name='$NAME_PARTSVEL_PARTICLES$')\n\
pForceSnd_pp$ID$ = ppSnd_sp$ID$.create(PdataVec3, name='$NAME_PARTSFORCE_PARTICLES$')\n\
pLifeSnd_pp$ID$ = ppSnd_sp$ID$.create(PdataReal, name='$NAME_PARTSLIFE_PARTICLES$')\n\
vel_sp$ID$ = sp$ID$.create(MACGrid, name='$NAME_VELOCITY_PARTICLES$')\n\
flags_sp$ID$ = sp$ID$.create(FlagGrid, name='$NAME_FLAGS_PARTICLES$')\n\
phi_sp$ID$ = sp$ID$.create(LevelsetGrid, name='$NAME_PHI_PARTICLES$')\n\
phiObs_sp$ID$ = sp$ID$.create(LevelsetGrid, name='$NAME_PHIOBS_PARTICLES$')\n\
phiOut_sp$ID$ = sp$ID$.create(LevelsetGrid, name='$NAME_PHIOUT_PARTICLES$')\n\
normal_sp$ID$ = sp$ID$.create(VecGrid, name='$NAME_NORMAL_PARTICLES$')\n\
neighborRatio_sp$ID$ = sp$ID$.create(RealGrid, name='$NAME_NEIGHBORRATIO_PARTICLES$')\n\
trappedAir_sp$ID$ = sp$ID$.create(RealGrid, name='$NAME_TRAPPEDAIR_PARTICLES$')\n\
waveCrest_sp$ID$ = sp$ID$.create(RealGrid, name='$NAME_WAVECREST_PARTICLES$')\n\
kineticEnergy_sp$ID$ = sp$ID$.create(RealGrid, name='$NAME_KINETICENERGY_PARTICLES$')\n\
\n\
# Set some initial values\n\
phi_sp$ID$.setConst(9999)\n\
phiObs_sp$ID$.setConst(9999)\n\
phiOut_sp$ID$.setConst(9999)\n\
\n\
# Keep track of important objects in dict to load them later on\n\
liquid_particles_dict_final_s$ID$ = { 'pVelSnd' : pVelSnd_pp$ID$, 'pLifeSnd' : pLifeSnd_pp$ID$, 'ppSnd' : ppSnd_sp$ID$ }\n\
liquid_particles_dict_resume_s$ID$ = { 'trappedAir' : trappedAir_sp$ID$, 'waveCrest' : waveCrest_sp$ID$, 'kineticEnergy' : kineticEnergy_sp$ID$ }\n";
const std::string liquid_init_phi =
"\n\
# Prepare domain\n\
phi_s$ID$.initFromFlags(flags_s$ID$)\n\
phiIn_s$ID$.initFromFlags(flags_s$ID$)\n";
//////////////////////////////////////////////////////////////////////
// STEP FUNCTIONS
//////////////////////////////////////////////////////////////////////
const std::string liquid_adaptive_step =
"\n\
def liquid_adaptive_step_$ID$(framenr):\n\
mantaMsg('Manta step, frame ' + str(framenr))\n\
s$ID$.frame = framenr\n\
\n\
fluid_pre_step_$ID$()\n\
\n\
flags_s$ID$.initDomain(boundaryWidth=1 if using_fractions_s$ID$ else 0, phiWalls=phiObs_s$ID$, outflow=boundConditions_s$ID$)\n\
\n\
if using_obstacle_s$ID$:\n\
mantaMsg('Extrapolating object velocity')\n\
# ensure velocities inside of obs object, slightly add obvels outside of obs object\n\
# extrapolate with phiObsIn before joining (static) phiObsSIn grid to prevent flows into static obs\n\
extrapolateVec3Simple(vel=obvelC_s$ID$, phi=phiObsIn_s$ID$, distance=6, inside=True)\n\
extrapolateVec3Simple(vel=obvelC_s$ID$, phi=phiObsIn_s$ID$, distance=3, inside=False)\n\
resampleVec3ToMac(source=obvelC_s$ID$, target=obvel_s$ID$)\n\
\n\
mantaMsg('Initializing obstacle levelset')\n\
phiObsIn_s$ID$.join(phiObsSIn_s$ID$) # Join static obstacle map\n\
phiObsIn_s$ID$.floodFill(boundaryWidth=1)\n\
extrapolateLsSimple(phi=phiObsIn_s$ID$, distance=6, inside=True)\n\
extrapolateLsSimple(phi=phiObsIn_s$ID$, distance=3, inside=False)\n\
phiObs_s$ID$.join(phiObsIn_s$ID$)\n\
\n\
# Additional sanity check: fill holes in phiObs which can result after joining with phiObsIn\n\
phiObs_s$ID$.floodFill(boundaryWidth=2 if using_fractions_s$ID$ else 1)\n\
extrapolateLsSimple(phi=phiObs_s$ID$, distance=6, inside=True)\n\
extrapolateLsSimple(phi=phiObs_s$ID$, distance=3)\n\
\n\
mantaMsg('Initializing fluid levelset')\n\
phiIn_s$ID$.join(phiSIn_s$ID$) # Join static flow map\n\
extrapolateLsSimple(phi=phiIn_s$ID$, distance=6, inside=True)\n\
extrapolateLsSimple(phi=phiIn_s$ID$, distance=3)\n\
phi_s$ID$.join(phiIn_s$ID$)\n\
\n\
if using_outflow_s$ID$:\n\
phiOutIn_s$ID$.join(phiOutSIn_s$ID$) # Join static outflow map\n\
phiOut_s$ID$.join(phiOutIn_s$ID$)\n\
\n\
if using_fractions_s$ID$:\n\
updateFractions(flags=flags_s$ID$, phiObs=phiObs_s$ID$, fractions=fractions_s$ID$, boundaryWidth=boundaryWidth_s$ID$, fracThreshold=fracThreshold_s$ID$)\n\
setObstacleFlags(flags=flags_s$ID$, phiObs=phiObs_s$ID$, phiOut=phiOut_s$ID$, fractions=fractions_s$ID$, phiIn=phiIn_s$ID$)\n\
\n\
if using_obstacle_s$ID$:\n\
# TODO(sebbas): Enable flags check again, currently produces unstable particle behavior\n\
phi_s$ID$.subtract(o=phiObsIn_s$ID$) #, flags=flags_s$ID$, subtractType=FlagObstacle)\n\
\n\
# add initial velocity: set invel as source grid to ensure const vels in inflow region, sampling makes use of this\n\
if using_invel_s$ID$:\n\
extrapolateVec3Simple(vel=invelC_s$ID$, phi=phiIn_s$ID$, distance=6, inside=True)\n\
# Using cell centered invels, a false isMAC flag ensures correct interpolation\n\
pVel_pp$ID$.setSource(grid=invelC_s$ID$, isMAC=False)\n\
# reset pvel grid source before sampling new particles - ensures that new particles are initialized with 0 velocity\n\
else:\n\
pVel_pp$ID$.setSource(grid=None, isMAC=False)\n\
\n\
pp_s$ID$.maxParticles = maxSysParticles_s$ID$ # remember, 0 means no particle cap\n\
sampleLevelsetWithParticles(phi=phiIn_s$ID$, flags=flags_s$ID$, parts=pp_s$ID$, discretization=particleNumber_s$ID$, randomness=randomness_s$ID$)\n\
flags_s$ID$.updateFromLevelset(phi_s$ID$)\n\
\n\
mantaMsg('Liquid step / s$ID$.frame: ' + str(s$ID$.frame))\n\
liquid_step_$ID$()\n\
\n\
s$ID$.step()\n\
\n\
fluid_post_step_$ID$()\n";
const std::string liquid_step =
"\n\
def liquid_step_$ID$():\n\
mantaMsg('Liquid step')\n\
\n\
mantaMsg('Advecting particles')\n\
pp_s$ID$.advectInGrid(flags=flags_s$ID$, vel=vel_s$ID$, integrationMode=IntRK4, deleteInObstacle=deleteInObstacle_s$ID$, stopInObstacle=False, skipNew=True)\n\
\n\
mantaMsg('Pushing particles out of obstacles')\n\
if using_obstacle_s$ID$ and using_fractions_s$ID$ and fracDistance_s$ID$ > 0:\n\
# Optional: Increase distance between fluid and obstacles (only obstacles, not borders)\n\
pushOutofObs(parts=pp_s$ID$, flags=flags_s$ID$, phiObs=phiObsIn_s$ID$, thresh=fracDistance_s$ID$)\n\
pushOutofObs(parts=pp_s$ID$, flags=flags_s$ID$, phiObs=phiObs_s$ID$)\n\
\n\
# save original states for later (used during mesh / secondary particle creation)\n\
# but only save the state at the beginning of an adaptive frame\n\
if not s$ID$.timePerFrame:\n\
phiTmp_s$ID$.copyFrom(phi_s$ID$)\n\
velTmp_s$ID$.copyFrom(vel_s$ID$)\n\
\n\
mantaMsg('Advecting phi')\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=phi_s$ID$, order=1) # first order is usually enough\n\
mantaMsg('Advecting velocity')\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=vel_s$ID$, order=2)\n\
\n\
# create level set of particles\n\
gridParticleIndex(parts=pp_s$ID$, flags=flags_s$ID$, indexSys=pindex_s$ID$, index=gpi_s$ID$)\n\
unionParticleLevelset(parts=pp_s$ID$, indexSys=pindex_s$ID$, flags=flags_s$ID$, index=gpi_s$ID$, phi=phiParts_s$ID$, radiusFactor=radiusFactor_s$ID$)\n\
\n\
# combine level set of particles with grid level set\n\
phi_s$ID$.addConst(1.) # shrink slightly\n\
phi_s$ID$.join(phiParts_s$ID$)\n\
extrapolateLsSimple(phi=phi_s$ID$, distance=narrowBandWidth_s$ID$+2, inside=True)\n\
extrapolateLsSimple(phi=phi_s$ID$, distance=3)\n\
phi_s$ID$.setBoundNeumann(0) # make sure no particles are placed at outer boundary\n\
\n\
if not domainClosed_s$ID$ or using_outflow_s$ID$:\n\
resetOutflow(flags=flags_s$ID$, phi=phi_s$ID$, parts=pp_s$ID$, index=gpi_s$ID$, indexSys=pindex_s$ID$)\n\
flags_s$ID$.updateFromLevelset(phi_s$ID$)\n\
\n\
# combine particle velocities with advected grid velocities\n\
if using_apic_s$ID$:\n\
apicMapPartsToMAC(flags=flags_s$ID$, vel=vel_s$ID$, parts=pp_s$ID$, partVel=pVel_pp$ID$, cpx=pCx_pp$ID$, cpy=pCy_pp$ID$, cpz=pCz_pp$ID$)\n\
else:\n\
mapPartsToMAC(vel=velParts_s$ID$, flags=flags_s$ID$, velOld=velOld_s$ID$, parts=pp_s$ID$, partVel=pVel_pp$ID$, weight=mapWeights_s$ID$)\n\
\n\
extrapolateMACFromWeight(vel=velParts_s$ID$, distance=2, weight=mapWeights_s$ID$)\n\
combineGridVel(vel=velParts_s$ID$, weight=mapWeights_s$ID$, combineVel=vel_s$ID$, phi=phi_s$ID$, narrowBand=combineBandWidth_s$ID$, thresh=0)\n\
velOld_s$ID$.copyFrom(vel_s$ID$)\n\
\n\
# forces & pressure solve\n\
addGravity(flags=flags_s$ID$, vel=vel_s$ID$, gravity=gravity_s$ID$, scale=False)\n\
\n\
mantaMsg('Adding external forces')\n\
addForceField(flags=flags_s$ID$, vel=vel_s$ID$, force=forces_s$ID$)\n\
\n\
extrapolateMACSimple(flags=flags_s$ID$, vel=vel_s$ID$, distance=2, intoObs=True if using_fractions_s$ID$ else False)\n\
\n\
# vel diffusion / viscosity!\n\
if using_diffusion_s$ID$:\n\
mantaMsg('Viscosity')\n\
# diffusion param for solve = const * dt / dx^2\n\
alphaV = kinViscosity_s$ID$ * s$ID$.timestep * float(res_s$ID$*res_s$ID$)\n\
setWallBcs(flags=flags_s$ID$, vel=vel_s$ID$, obvel=None if using_fractions_s$ID$ else obvel_s$ID$, phiObs=phiObs_s$ID$, fractions=fractions_s$ID$)\n\
cgSolveDiffusion(flags_s$ID$, vel_s$ID$, alphaV)\n\
\n\
mantaMsg('Curvature')\n\
getLaplacian(laplacian=curvature_s$ID$, grid=phi_s$ID$)\n\
curvature_s$ID$.clamp(-1.0, 1.0)\n\
\n\
setWallBcs(flags=flags_s$ID$, vel=vel_s$ID$, obvel=None if using_fractions_s$ID$ else obvel_s$ID$, phiObs=phiObs_s$ID$, fractions=fractions_s$ID$)\n\
if using_viscosity_s$ID$:\n\
viscosity_s$ID$.setConst(viscosityValue_s$ID$)\n\
applyViscosity(flags=flags_s$ID$, phi=phi_s$ID$, vel=vel_s$ID$, volumes=volumes_s$ID$, viscosity=viscosity_s$ID$)\n\
\n\
setWallBcs(flags=flags_s$ID$, vel=vel_s$ID$, obvel=None if using_fractions_s$ID$ else obvel_s$ID$, phiObs=phiObs_s$ID$, fractions=fractions_s$ID$)\n\
if using_guiding_s$ID$:\n\
mantaMsg('Guiding and pressure')\n\
PD_fluid_guiding(vel=vel_s$ID$, velT=velT_s$ID$, flags=flags_s$ID$, phi=phi_s$ID$, curv=curvature_s$ID$, surfTens=surfaceTension_s$ID$, fractions=fractions_s$ID$, weight=weightGuide_s$ID$, blurRadius=beta_sg$ID$, pressure=pressure_s$ID$, tau=tau_sg$ID$, sigma=sigma_sg$ID$, theta=theta_sg$ID$, zeroPressureFixing=domainClosed_s$ID$)\n\
else:\n\
mantaMsg('Pressure')\n\
solvePressure(flags=flags_s$ID$, vel=vel_s$ID$, pressure=pressure_s$ID$, curv=curvature_s$ID$, surfTens=surfaceTension_s$ID$, fractions=fractions_s$ID$, obvel=obvel_s$ID$ if using_fractions_s$ID$ else None, zeroPressureFixing=domainClosed_s$ID$)\n\
\n\
extrapolateMACSimple(flags=flags_s$ID$, vel=vel_s$ID$, distance=4, intoObs=True if using_fractions_s$ID$ else False)\n\
setWallBcs(flags=flags_s$ID$, vel=vel_s$ID$, obvel=None if using_fractions_s$ID$ else obvel_s$ID$, phiObs=phiObs_s$ID$, fractions=fractions_s$ID$)\n\
\n\
if not using_fractions_s$ID$:\n\
extrapolateMACSimple(flags=flags_s$ID$, vel=vel_s$ID$)\n\
\n\
# set source grids for resampling, used in adjustNumber!\n\
pVel_pp$ID$.setSource(grid=vel_s$ID$, isMAC=True)\n\
adjustNumber(parts=pp_s$ID$, vel=vel_s$ID$, flags=flags_s$ID$, minParticles=minParticles_s$ID$, maxParticles=maxParticles_s$ID$, phi=phi_s$ID$, exclude=phiObs_s$ID$, radiusFactor=radiusFactor_s$ID$, narrowBand=adjustedNarrowBandWidth_s$ID$)\n\
\n\
if using_apic_s$ID$:\n\
apicMapMACGridToParts(partVel=pVel_pp$ID$, cpx=pCx_pp$ID$, cpy=pCy_pp$ID$, cpz=pCz_pp$ID$, parts=pp_s$ID$, vel=vel_s$ID$, flags=flags_s$ID$)\n\
else:\n\
flipVelocityUpdate(vel=vel_s$ID$, velOld=velOld_s$ID$, flags=flags_s$ID$, parts=pp_s$ID$, partVel=pVel_pp$ID$, flipRatio=flipRatio_s$ID$)\n";
const std::string liquid_step_mesh =
"\n\
def liquid_step_mesh_$ID$():\n\
mantaMsg('Liquid step mesh')\n\
\n\
# no upres: just use the loaded grids\n\
if upres_sm$ID$ <= 1:\n\
phi_sm$ID$.copyFrom(phi_s$ID$)\n\
\n\
# with upres: recreate grids\n\
else:\n\
interpolateGrid(target=phi_sm$ID$, source=phi_s$ID$)\n\
\n\
# create surface\n\
pp_sm$ID$.readParticles(pp_s$ID$)\n\
gridParticleIndex(parts=pp_sm$ID$, flags=flags_sm$ID$, indexSys=pindex_sm$ID$, index=gpi_sm$ID$)\n\
\n\
if using_final_mesh_s$ID$:\n\
mantaMsg('Liquid using improved particle levelset')\n\
improvedParticleLevelset(pp_sm$ID$, pindex_sm$ID$, flags_sm$ID$, gpi_sm$ID$, phiParts_sm$ID$, meshRadiusFactor_s$ID$, smoothenPos_s$ID$, smoothenNeg_s$ID$, concaveLower_s$ID$, concaveUpper_s$ID$)\n\
else:\n\
mantaMsg('Liquid using union particle levelset')\n\
unionParticleLevelset(pp_sm$ID$, pindex_sm$ID$, flags_sm$ID$, gpi_sm$ID$, phiParts_sm$ID$, meshRadiusFactor_s$ID$)\n\
\n\
phi_sm$ID$.addConst(1.) # shrink slightly\n\
phi_sm$ID$.join(phiParts_sm$ID$)\n\
extrapolateLsSimple(phi=phi_sm$ID$, distance=narrowBandWidth_s$ID$+2, inside=True)\n\
extrapolateLsSimple(phi=phi_sm$ID$, distance=3)\n\
phi_sm$ID$.setBoundNeumann(0) # make sure no particles are placed at outer boundary\n\
\n\
# Vert vel vector needs to pull data from vel grid with correct dim\n\
if using_speedvectors_s$ID$:\n\
interpolateMACGrid(target=vel_sm$ID$, source=vel_s$ID$)\n\
mVel_mesh$ID$.setSource(grid=vel_sm$ID$, isMAC=True)\n\
\n\
# Set 0.5 boundary at walls + account for extra wall thickness in fractions mode + account for grid scaling:\n\
# E.g. at upres=1 we expect 1 cell border (or 2 with fractions), at upres=2 we expect 2 cell border (or 4 with fractions), etc.\n\
# Use -1 since setBound() starts counting at 0 (and additional -1 for fractions to account for solid/fluid interface cells)\n\
phi_sm$ID$.setBound(value=0.5, boundaryWidth=(upres_sm$ID$*2)-2 if using_fractions_s$ID$ else upres_sm$ID$-1)\n\
phi_sm$ID$.createMesh(mesh_sm$ID$)\n";
const std::string liquid_step_particles =
"\n\
def liquid_step_particles_$ID$():\n\
mantaMsg('Secondary particles step')\n\
\n\
# no upres: just use the loaded grids\n\
if upres_sp$ID$ <= 1:\n\
vel_sp$ID$.copyFrom(velTmp_s$ID$)\n\
phiObs_sp$ID$.copyFrom(phiObs_s$ID$)\n\
phi_sp$ID$.copyFrom(phiTmp_s$ID$)\n\
phiOut_sp$ID$.copyFrom(phiOut_s$ID$)\n\
\n\
# with upres: recreate grids\n\
else:\n\
# create highres grids by interpolation\n\
interpolateMACGrid(target=vel_sp$ID$, source=velTmp_s$ID$)\n\
interpolateGrid(target=phiObs_sp$ID$, source=phiObs_s$ID$)\n\
interpolateGrid(target=phi_sp$ID$, source=phiTmp_s$ID$)\n\
interpolateGrid(target=phiOut_sp$ID$, source=phiOut_s$ID$)\n\
\n\
# phiIn not needed, bwidth to 0 because we are omitting flags.initDomain()\n\
setObstacleFlags(flags=flags_sp$ID$, phiObs=phiObs_sp$ID$, phiOut=phiOut_sp$ID$, phiIn=None, boundaryWidth=0)\n\
flags_sp$ID$.updateFromLevelset(levelset=phi_sp$ID$)\n\
\n\
# Actual secondary particle simulation\n\
flipComputeSecondaryParticlePotentials(potTA=trappedAir_sp$ID$, potWC=waveCrest_sp$ID$, potKE=kineticEnergy_sp$ID$, neighborRatio=neighborRatio_sp$ID$, flags=flags_sp$ID$, v=vel_sp$ID$, normal=normal_sp$ID$, phi=phi_sp$ID$, radius=pot_radius_sp$ID$, tauMinTA=tauMin_ta_sp$ID$, tauMaxTA=tauMax_ta_sp$ID$, tauMinWC=tauMin_wc_sp$ID$, tauMaxWC=tauMax_wc_sp$ID$, tauMinKE=tauMin_k_sp$ID$, tauMaxKE=tauMax_k_sp$ID$, scaleFromManta=ratioMetersToRes_s$ID$)\n\
flipSampleSecondaryParticles(mode='single', flags=flags_sp$ID$, v=vel_sp$ID$, pts_sec=ppSnd_sp$ID$, v_sec=pVelSnd_pp$ID$, l_sec=pLifeSnd_pp$ID$, lMin=lMin_sp$ID$, lMax=lMax_sp$ID$, potTA=trappedAir_sp$ID$, potWC=waveCrest_sp$ID$, potKE=kineticEnergy_sp$ID$, neighborRatio=neighborRatio_sp$ID$, c_s=c_s_sp$ID$, c_b=c_b_sp$ID$, k_ta=k_ta_sp$ID$, k_wc=k_wc_sp$ID$)\n\
flipUpdateSecondaryParticles(mode='linear', pts_sec=ppSnd_sp$ID$, v_sec=pVelSnd_pp$ID$, l_sec=pLifeSnd_pp$ID$, f_sec=pForceSnd_pp$ID$, flags=flags_sp$ID$, v=vel_sp$ID$, neighborRatio=neighborRatio_sp$ID$, radius=update_radius_sp$ID$, gravity=gravity_s$ID$, scale=False, k_b=k_b_sp$ID$, k_d=k_d_sp$ID$, c_s=c_s_sp$ID$, c_b=c_b_sp$ID$)\n\
if using_snd_pushout_sp$ID$:\n\
pushOutofObs(parts=ppSnd_sp$ID$, flags=flags_sp$ID$, phiObs=phiObs_sp$ID$, shift=1.0)\n\
flipDeleteParticlesInObstacle(pts=ppSnd_sp$ID$, flags=flags_sp$ID$) # delete particles inside obstacle and outflow cells\n\
\n\
# Print debug information in the console\n\
if 0:\n\
debugGridInfo(flags=flags_sp$ID$, grid=trappedAir_sp$ID$, name='Trapped Air')\n\
debugGridInfo(flags=flags_sp$ID$, grid=waveCrest_sp$ID$, name='Wave Crest')\n\
debugGridInfo(flags=flags_sp$ID$, grid=kineticEnergy_sp$ID$, name='Kinetic Energy')\n";
//////////////////////////////////////////////////////////////////////
// IMPORT
//////////////////////////////////////////////////////////////////////
const std::string liquid_load_data =
"\n\
def liquid_load_data_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Liquid load data')\n\
dict = { **fluid_data_dict_final_s$ID$, **fluid_data_dict_resume_s$ID$, **liquid_data_dict_final_s$ID$, **liquid_data_dict_resume_s$ID$ } if resumable else { **fluid_data_dict_final_s$ID$, **liquid_data_dict_final_s$ID$ }\n\
fluid_file_import_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_data_s$ID$)\n\
\n\
copyVec3ToReal(source=vel_s$ID$, targetX=x_vel_s$ID$, targetY=y_vel_s$ID$, targetZ=z_vel_s$ID$)\n";
const std::string liquid_load_mesh =
"\n\
def liquid_load_mesh_$ID$(path, framenr, file_format):\n\
mantaMsg('Liquid load mesh')\n\
dict = liquid_mesh_dict_s$ID$\n\
fluid_file_import_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_mesh_s$ID$)\n\
\n\
def liquid_load_meshvel_$ID$(path, framenr, file_format):\n\
mantaMsg('Liquid load meshvel')\n\
dict = liquid_meshvel_dict_s$ID$\n\
fluid_file_import_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_meshvel_s$ID$)\n";
const std::string liquid_load_particles =
"\n\
def liquid_load_particles_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Liquid load particles')\n\
dict = { **liquid_particles_dict_final_s$ID$, **liquid_particles_dict_resume_s$ID$ } if resumable else { **liquid_particles_dict_final_s$ID$ }\n\
fluid_file_import_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_particles_s$ID$)\n";
//////////////////////////////////////////////////////////////////////
// EXPORT
//////////////////////////////////////////////////////////////////////
const std::string liquid_save_data =
"\n\
def liquid_save_data_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Liquid save data')\n\
dict = { **fluid_data_dict_final_s$ID$, **fluid_data_dict_resume_s$ID$, **liquid_data_dict_final_s$ID$, **liquid_data_dict_resume_s$ID$ } if resumable else { **fluid_data_dict_final_s$ID$, **liquid_data_dict_final_s$ID$ }\n\
if not withMPSave or isWindows:\n\
fluid_file_export_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_data_s$ID$)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=fluid_file_export_s$ID$, file_name=file_data_s$ID$, framenr=framenr, format_data=file_format, path_data=path, dict=dict, do_join=False)\n";
const std::string liquid_save_mesh =
"\n\
def liquid_save_mesh_$ID$(path, framenr, file_format):\n\
mantaMsg('Liquid save mesh')\n\
dict = liquid_mesh_dict_s$ID$\n\
if not withMPSave or isWindows:\n\
fluid_file_export_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_mesh_s$ID$)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=fluid_file_export_s$ID$, file_name=file_mesh_s$ID$, framenr=framenr, format_data=file_format, path_data=path, dict=dict, do_join=False)\n\
\n\
def liquid_save_meshvel_$ID$(path, framenr, file_format):\n\
mantaMsg('Liquid save mesh vel')\n\
dict = liquid_meshvel_dict_s$ID$\n\
if not withMPSave or isWindows:\n\
fluid_file_export_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=fluid_file_export_s$ID$, framenr=framenr, format_data=file_format, path_data=path, dict=dict, do_join=False)\n";
const std::string liquid_save_particles =
"\n\
def liquid_save_particles_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Liquid save particles')\n\
dict = { **liquid_particles_dict_final_s$ID$, **liquid_particles_dict_resume_s$ID$ } if resumable else { **liquid_particles_dict_final_s$ID$ }\n\
if not withMPSave or isWindows:\n\
fluid_file_export_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_particles_s$ID$)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=fluid_file_export_s$ID$, file_name=file_particles_s$ID$, framenr=framenr, format_data=file_format, path_data=path, dict=dict, do_join=False)\n";
//////////////////////////////////////////////////////////////////////
// STANDALONE MODE
//////////////////////////////////////////////////////////////////////
const std::string liquid_standalone =
"\n\
# Helper function to call cache load functions\n\
def load_data(frame, cache_resumable):\n\
liquid_load_data_$ID$(os.path.join(cache_dir, 'data'), frame, file_format_data, cache_resumable)\n\
if using_sndparts_s$ID$:\n\
liquid_load_particles_$ID$(os.path.join(cache_dir, 'particles'), frame, file_format_data, cache_resumable)\n\
if using_mesh_s$ID$:\n\
liquid_load_mesh_$ID$(os.path.join(cache_dir, 'mesh'), frame, file_format_mesh)\n\
if using_guiding_s$ID$:\n\
fluid_load_guiding_$ID$(os.path.join(cache_dir, 'guiding'), frame, file_format_data)\n\
\n\
# Helper function to call step functions\n\
def step(frame):\n\
liquid_adaptive_step_$ID$(frame)\n\
if using_mesh_s$ID$:\n\
liquid_step_mesh_$ID$()\n\
if using_sndparts_s$ID$:\n\
liquid_step_particles_$ID$()\n";

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/* SPDX-FileCopyrightText: 2016 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup intern_mantaflow
*/
#include <string>
//////////////////////////////////////////////////////////////////////
// VARIABLES
//////////////////////////////////////////////////////////////////////
const std::string smoke_variables =
"\n\
mantaMsg('Smoke variables low')\n\
preconditioner_s$ID$ = PcMGStatic\n\
using_colors_s$ID$ = $USING_COLORS$\n\
using_heat_s$ID$ = $USING_HEAT$\n\
using_fire_s$ID$ = $USING_FIRE$\n\
using_noise_s$ID$ = $USING_NOISE$\n\
vorticity_s$ID$ = $VORTICITY$\n\
buoyancy_dens_s$ID$ = float($BUOYANCY_ALPHA$) / float($FLUID_DOMAIN_SIZE$)\n\
buoyancy_heat_s$ID$ = float($BUOYANCY_BETA$) / float($FLUID_DOMAIN_SIZE$)\n\
dissolveSpeed_s$ID$ = $DISSOLVE_SPEED$\n\
using_logdissolve_s$ID$ = $USING_LOG_DISSOLVE$\n\
using_dissolve_s$ID$ = $USING_DISSOLVE$\n\
flameVorticity_s$ID$ = $FLAME_VORTICITY$\n\
burningRate_s$ID$ = $BURNING_RATE$\n\
flameSmoke_s$ID$ = $FLAME_SMOKE$\n\
ignitionTemp_s$ID$ = $IGNITION_TEMP$\n\
maxTemp_s$ID$ = $MAX_TEMP$\n\
flameSmokeColor_s$ID$ = vec3($FLAME_SMOKE_COLOR_X$,$FLAME_SMOKE_COLOR_Y$,$FLAME_SMOKE_COLOR_Z$)\n";
const std::string smoke_variables_noise =
"\n\
mantaMsg('Smoke variables noise')\n\
wltStrength_s$ID$ = $WLT_STR$\n\
uvs_s$ID$ = 2\n\
uvs_offset_s$ID$ = vec3($MIN_RESX$, $MIN_RESY$, $MIN_RESZ$)\n\
octaves_s$ID$ = int(math.log(upres_sn$ID$) / math.log(2.0) + 0.5) if (upres_sn$ID$ > 1) else 1\n";
const std::string smoke_wavelet_noise =
"\n\
# wavelet noise params\n\
wltnoise_sn$ID$.posScale = vec3(int($BASE_RESX$), int($BASE_RESY$), int($BASE_RESZ$)) * (1. / $NOISE_POSSCALE$)\n\
wltnoise_sn$ID$.timeAnim = $NOISE_TIMEANIM$\n";
const std::string smoke_with_heat =
"\n\
using_heat_s$ID$ = True\n";
const std::string smoke_with_colors =
"\n\
using_colors_s$ID$ = True\n";
const std::string smoke_with_fire =
"\n\
using_fire_s$ID$ = True\n";
//////////////////////////////////////////////////////////////////////
// GRIDS
//////////////////////////////////////////////////////////////////////
const std::string smoke_alloc =
"\n\
mantaMsg('Smoke alloc')\n\
shadow_s$ID$ = s$ID$.create(RealGrid, name='$NAME_SHADOW$', sparse=False)\n\
emission_s$ID$ = s$ID$.create(RealGrid, name='$NAME_EMISSION$', sparse=True)\n\
emissionIn_s$ID$ = s$ID$.create(RealGrid, name='$NAME_EMISSIONIN$')\n\
density_s$ID$ = s$ID$.create(RealGrid, name='$NAME_DENSITY$', sparse=True)\n\
densityIn_s$ID$ = s$ID$.create(RealGrid, name='$NAME_DENSITYIN$', sparse=True)\n\
heat_s$ID$ = None # allocated dynamically\n\
heatIn_s$ID$ = None\n\
flame_s$ID$ = None\n\
fuel_s$ID$ = None\n\
react_s$ID$ = None\n\
fuelIn_s$ID$ = None\n\
reactIn_s$ID$ = None\n\
color_r_s$ID$ = None\n\
color_g_s$ID$ = None\n\
color_b_s$ID$ = None\n\
color_r_in_s$ID$ = None\n\
color_g_in_s$ID$ = None\n\
color_b_in_s$ID$ = None\n\
\n\
# Set some initial values\n\
shadow_s$ID$.setConst(-1)\n\
\n\
# Keep track of important objects in dict to load them later on\n\
smoke_data_dict_final_s$ID$ = { 'density' : density_s$ID$, 'shadow' : shadow_s$ID$ }\n\
smoke_data_dict_resume_s$ID$ = { 'densityIn' : densityIn_s$ID$, 'emission' : emission_s$ID$ }\n";
const std::string smoke_alloc_noise =
"\n\
mantaMsg('Smoke alloc noise')\n\
vel_sn$ID$ = sn$ID$.create(MACGrid, name='$NAME_VELOCITY_NOISE$')\n\
density_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_DENSITY_NOISE$', sparse=True)\n\
phiIn_sn$ID$ = sn$ID$.create(LevelsetGrid, name='$NAME_PHIIN_NOISE$')\n\
phiOut_sn$ID$ = sn$ID$.create(LevelsetGrid, name='$NAME_PHIOUT_NOISE$')\n\
phiObs_sn$ID$ = sn$ID$.create(LevelsetGrid, name='$NAME_PHIOBS_NOISE$')\n\
flags_sn$ID$ = sn$ID$.create(FlagGrid, name='$NAME_FLAGS_NOISE$')\n\
tmpIn_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_TMPIN_NOISE$')\n\
emissionIn_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_EMISSIONIN_NOISE$')\n\
energy_s$ID$ = s$ID$.create(RealGrid, name='$NAME_ENERGY$')\n\
tmpFlags_s$ID$ = s$ID$.create(FlagGrid, name='$NAME_TMPFLAGS$')\n\
texture_u_s$ID$ = s$ID$.create(RealGrid, name='$NAME_TEXTURE_U$')\n\
texture_v_s$ID$ = s$ID$.create(RealGrid, name='$NAME_TEXTURE_V$')\n\
texture_w_s$ID$ = s$ID$.create(RealGrid, name='$NAME_TEXTURE_W$')\n\
texture_u2_s$ID$ = s$ID$.create(RealGrid, name='$NAME_TEXTURE_U2$')\n\
texture_v2_s$ID$ = s$ID$.create(RealGrid, name='$NAME_TEXTURE_V2$')\n\
texture_w2_s$ID$ = s$ID$.create(RealGrid, name='$NAME_TEXTURE_W2$')\n\
flame_sn$ID$ = None\n\
fuel_sn$ID$ = None\n\
react_sn$ID$ = None\n\
color_r_sn$ID$ = None\n\
color_g_sn$ID$ = None\n\
color_b_sn$ID$ = None\n\
wltnoise_sn$ID$ = sn$ID$.create(NoiseField, fixedSeed=265, loadFromFile=True)\n\
\n\
mantaMsg('Initializing UV Grids')\n\
uvGrid0_s$ID$ = s$ID$.create(VecGrid, name='$NAME_UV0$', sparse=False)\n\
uvGrid1_s$ID$ = s$ID$.create(VecGrid, name='$NAME_UV1$', sparse=False)\n\
resetUvGrid(target=uvGrid0_s$ID$, offset=uvs_offset_s$ID$)\n\
resetUvGrid(target=uvGrid1_s$ID$, offset=uvs_offset_s$ID$)\n\
\n\
# Sync UV and texture grids\n\
copyVec3ToReal(source=uvGrid0_s$ID$, targetX=texture_u_s$ID$, targetY=texture_v_s$ID$, targetZ=texture_w_s$ID$)\n\
copyVec3ToReal(source=uvGrid1_s$ID$, targetX=texture_u2_s$ID$, targetY=texture_v2_s$ID$, targetZ=texture_w2_s$ID$)\n\
\n\
# Keep track of important objects in dict to load them later on\n\
smoke_noise_dict_final_s$ID$ = { 'density_noise' : density_sn$ID$ }\n\
smoke_noise_dict_resume_s$ID$ = { 'uv0_noise' : uvGrid0_s$ID$, 'uv1_noise' : uvGrid1_s$ID$ }\n";
//////////////////////////////////////////////////////////////////////
// ADDITIONAL GRIDS
//////////////////////////////////////////////////////////////////////
const std::string smoke_alloc_colors =
"\n\
# Sanity check, clear grids first\n\
if 'color_r_s$ID$' in globals(): del color_r_s$ID$\n\
if 'color_g_s$ID$' in globals(): del color_g_s$ID$\n\
if 'color_b_s$ID$' in globals(): del color_b_s$ID$\n\
\n\
mantaMsg('Allocating colors')\n\
color_r_s$ID$ = s$ID$.create(RealGrid, name='$NAME_COLORR$', sparse=True)\n\
color_g_s$ID$ = s$ID$.create(RealGrid, name='$NAME_COLORG$', sparse=True)\n\
color_b_s$ID$ = s$ID$.create(RealGrid, name='$NAME_COLORB$', sparse=True)\n\
color_r_in_s$ID$ = s$ID$.create(RealGrid, name='$NAME_COLORRIN$', sparse=True)\n\
color_g_in_s$ID$ = s$ID$.create(RealGrid, name='$NAME_COLORGIN$', sparse=True)\n\
color_b_in_s$ID$ = s$ID$.create(RealGrid, name='$NAME_COLORBIN$', sparse=True)\n\
\n\
# Add objects to dict to load them later on\n\
if 'smoke_data_dict_final_s$ID$' in globals():\n\
smoke_data_dict_final_s$ID$.update(color_r=color_r_s$ID$, color_g=color_g_s$ID$, color_b=color_b_s$ID$)\n\
if 'smoke_data_dict_resume_s$ID$' in globals():\n\
smoke_data_dict_resume_s$ID$.update(color_r_in=color_r_in_s$ID$, color_g_in=color_g_in_s$ID$, color_b_in=color_b_in_s$ID$)\n";
const std::string smoke_alloc_colors_noise =
"\n\
# Sanity check, clear grids first\n\
if 'color_r_sn$ID$' in globals(): del color_r_sn$ID$\n\
if 'color_g_sn$ID$' in globals(): del color_g_sn$ID$\n\
if 'color_b_sn$ID$' in globals(): del color_b_sn$ID$\n\
\n\
mantaMsg('Allocating colors noise')\n\
color_r_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_COLORR_NOISE$', sparse=True)\n\
color_g_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_COLORG_NOISE$', sparse=True)\n\
color_b_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_COLORB_NOISE$', sparse=True)\n\
\n\
# Add objects to dict to load them later on\n\
if 'smoke_noise_dict_final_s$ID$' in globals():\n\
smoke_noise_dict_final_s$ID$.update(color_r_noise=color_r_sn$ID$, color_g_noise=color_g_sn$ID$, color_b_noise=color_b_sn$ID$)\n";
const std::string smoke_init_colors =
"\n\
mantaMsg('Initializing colors')\n\
color_r_s$ID$.copyFrom(density_s$ID$) \n\
color_r_s$ID$.multConst($COLOR_R$) \n\
color_g_s$ID$.copyFrom(density_s$ID$) \n\
color_g_s$ID$.multConst($COLOR_G$) \n\
color_b_s$ID$.copyFrom(density_s$ID$) \n\
color_b_s$ID$.multConst($COLOR_B$)\n";
const std::string smoke_init_colors_noise =
"\n\
mantaMsg('Initializing colors noise')\n\
color_r_sn$ID$.copyFrom(density_sn$ID$) \n\
color_r_sn$ID$.multConst($COLOR_R$) \n\
color_g_sn$ID$.copyFrom(density_sn$ID$) \n\
color_g_sn$ID$.multConst($COLOR_G$) \n\
color_b_sn$ID$.copyFrom(density_sn$ID$) \n\
color_b_sn$ID$.multConst($COLOR_B$)\n";
const std::string smoke_alloc_heat =
"\n\
# Sanity check, clear grids first\n\
if 'heat_s$ID$' in globals(): del heat_s$ID$\n\
if 'heatIn_s$ID$' in globals(): del heatIn_s$ID$\n\
\n\
mantaMsg('Allocating heat')\n\
heat_s$ID$ = s$ID$.create(RealGrid, name='$NAME_TEMPERATURE$', sparse=True)\n\
heatIn_s$ID$ = s$ID$.create(RealGrid, name='$NAME_TEMPERATUREIN$', sparse=True)\n\
\n\
# Add objects to dict to load them later on\n\
if 'smoke_data_dict_final_s$ID$' in globals():\n\
smoke_data_dict_final_s$ID$.update(heat=heat_s$ID$)\n\
if 'smoke_data_dict_resume_s$ID$' in globals():\n\
smoke_data_dict_resume_s$ID$.update(heatIn=heatIn_s$ID$)\n";
const std::string smoke_alloc_fire =
"\n\
# Sanity check, clear grids first\n\
if 'flame_s$ID$' in globals(): del flame_s$ID$\n\
if 'fuel_s$ID$' in globals(): del fuel_s$ID$\n\
if 'react_s$ID$' in globals(): del react_s$ID$\n\
if 'fuelIn_s$ID$' in globals(): del fuelIn_s$ID$\n\
if 'reactIn_s$ID$' in globals(): del reactIn_s$ID$\n\
\n\
mantaMsg('Allocating fire')\n\
flame_s$ID$ = s$ID$.create(RealGrid, name='$NAME_FLAME$', sparse=True)\n\
fuel_s$ID$ = s$ID$.create(RealGrid, name='$NAME_FUEL$', sparse=True)\n\
react_s$ID$ = s$ID$.create(RealGrid, name='$NAME_REACT$', sparse=True)\n\
fuelIn_s$ID$ = s$ID$.create(RealGrid, name='$NAME_FUELIN$', sparse=True)\n\
reactIn_s$ID$ = s$ID$.create(RealGrid, name='$NAME_REACTIN$', sparse=True)\n\
\n\
# Add objects to dict to load them later on\n\
if 'smoke_data_dict_final_s$ID$' in globals():\n\
smoke_data_dict_final_s$ID$.update(flame=flame_s$ID$)\n\
if 'smoke_data_dict_resume_s$ID$' in globals():\n\
smoke_data_dict_resume_s$ID$.update(fuel=fuel_s$ID$, react=react_s$ID$, fuelIn=fuelIn_s$ID$, reactIn=reactIn_s$ID$)\n";
const std::string smoke_alloc_fire_noise =
"\n\
# Sanity check, clear grids first\n\
if 'flame_sn$ID$' in globals(): del flame_sn$ID$\n\
if 'fuel_sn$ID$' in globals(): del fuel_sn$ID$\n\
if 'react_sn$ID$' in globals(): del react_sn$ID$\n\
\n\
mantaMsg('Allocating fire noise')\n\
flame_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_FLAME_NOISE$', sparse=True)\n\
fuel_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_FUEL_NOISE$', sparse=True)\n\
react_sn$ID$ = sn$ID$.create(RealGrid, name='$NAME_REACT_NOISE$', sparse=True)\n\
\n\
# Add objects to dict to load them later on\n\
if 'smoke_noise_dict_final_s$ID$' in globals():\n\
smoke_noise_dict_final_s$ID$.update(flame_noise=flame_sn$ID$)\n\
if 'smoke_noise_dict_resume_s$ID$' in globals():\n\
smoke_noise_dict_resume_s$ID$.update(fuel_noise=fuel_sn$ID$, react_noise=react_sn$ID$)\n";
//////////////////////////////////////////////////////////////////////
// STEP FUNCTIONS
//////////////////////////////////////////////////////////////////////
const std::string smoke_adaptive_step =
"\n\
def smoke_adaptive_step_$ID$(framenr):\n\
mantaMsg('Manta step, frame ' + str(framenr))\n\
s$ID$.frame = framenr\n\
\n\
fluid_pre_step_$ID$()\n\
\n\
flags_s$ID$.initDomain(boundaryWidth=0, phiWalls=phiObs_s$ID$, outflow=boundConditions_s$ID$)\n\
\n\
if using_obstacle_s$ID$:\n\
mantaMsg('Extrapolating object velocity')\n\
# ensure velocities inside of obs object, slightly add obvels outside of obs object\n\
# extrapolate with phiObsIn before joining (static) phiObsSIn grid to prevent flows into static obs\n\
extrapolateVec3Simple(vel=obvelC_s$ID$, phi=phiObsIn_s$ID$, distance=6, inside=True)\n\
extrapolateVec3Simple(vel=obvelC_s$ID$, phi=phiObsIn_s$ID$, distance=3, inside=False)\n\
resampleVec3ToMac(source=obvelC_s$ID$, target=obvel_s$ID$)\n\
\n\
mantaMsg('Initializing obstacle levelset')\n\
phiObsIn_s$ID$.join(phiObsSIn_s$ID$) # Join static obstacle map\n\
phiObsIn_s$ID$.floodFill(boundaryWidth=1)\n\
extrapolateLsSimple(phi=phiObsIn_s$ID$, distance=6, inside=True)\n\
extrapolateLsSimple(phi=phiObsIn_s$ID$, distance=3, inside=False)\n\
phiObs_s$ID$.join(phiObsIn_s$ID$)\n\
\n\
# Additional sanity check: fill holes in phiObs which can result after joining with phiObsIn\n\
phiObs_s$ID$.floodFill(boundaryWidth=1)\n\
extrapolateLsSimple(phi=phiObs_s$ID$, distance=6, inside=True)\n\
extrapolateLsSimple(phi=phiObs_s$ID$, distance=3, inside=False)\n\
\n\
mantaMsg('Initializing fluid levelset')\n\
phiIn_s$ID$.join(phiSIn_s$ID$) # Join static flow map\n\
extrapolateLsSimple(phi=phiIn_s$ID$, distance=6, inside=True)\n\
extrapolateLsSimple(phi=phiIn_s$ID$, distance=3, inside=False)\n\
\n\
if using_outflow_s$ID$:\n\
phiOutIn_s$ID$.join(phiOutSIn_s$ID$) # Join static outflow map\n\
phiOut_s$ID$.join(phiOutIn_s$ID$)\n\
\n\
setObstacleFlags(flags=flags_s$ID$, phiObs=phiObs_s$ID$, phiOut=phiOut_s$ID$, phiIn=phiIn_s$ID$, boundaryWidth=1)\n\
flags_s$ID$.fillGrid()\n\
\n\
# reset emission accumulation at the beginning of an adaptive frame\n\
if not s$ID$.timePerFrame:\n\
emission_s$ID$.setConst(0.)\n\
# accumulate emission value per adaptive step for later use in noise computation\n\
emission_s$ID$.join(emissionIn_s$ID$)\n\
\n\
applyEmission(flags=flags_s$ID$, target=density_s$ID$, source=densityIn_s$ID$, emissionTexture=emissionIn_s$ID$, type=FlagInflow|FlagOutflow)\n\
if using_heat_s$ID$:\n\
applyEmission(flags=flags_s$ID$, target=heat_s$ID$, source=heatIn_s$ID$, emissionTexture=emissionIn_s$ID$, type=FlagInflow|FlagOutflow)\n\
\n\
if using_colors_s$ID$:\n\
applyEmission(flags=flags_s$ID$, target=color_r_s$ID$, source=color_r_in_s$ID$, emissionTexture=emissionIn_s$ID$, type=FlagInflow|FlagOutflow)\n\
applyEmission(flags=flags_s$ID$, target=color_g_s$ID$, source=color_g_in_s$ID$, emissionTexture=emissionIn_s$ID$, type=FlagInflow|FlagOutflow)\n\
applyEmission(flags=flags_s$ID$, target=color_b_s$ID$, source=color_b_in_s$ID$, emissionTexture=emissionIn_s$ID$, type=FlagInflow|FlagOutflow)\n\
\n\
if using_fire_s$ID$:\n\
applyEmission(flags=flags_s$ID$, target=fuel_s$ID$, source=fuelIn_s$ID$, emissionTexture=emissionIn_s$ID$, type=FlagInflow|FlagOutflow)\n\
applyEmission(flags=flags_s$ID$, target=react_s$ID$, source=reactIn_s$ID$, emissionTexture=emissionIn_s$ID$, type=FlagInflow|FlagOutflow)\n\
\n\
mantaMsg('Smoke step / s$ID$.frame: ' + str(s$ID$.frame))\n\
if using_fire_s$ID$:\n\
process_burn_$ID$()\n\
smoke_step_$ID$()\n\
if using_fire_s$ID$:\n\
update_flame_$ID$()\n\
\n\
s$ID$.step()\n\
\n\
fluid_post_step_$ID$()\n";
const std::string smoke_step =
"\n\
def smoke_step_$ID$():\n\
mantaMsg('Smoke step low')\n\
\n\
# save original state for later (used during noise creation)\n\
velTmp_s$ID$.copyFrom(vel_s$ID$)\n\
\n\
if using_dissolve_s$ID$:\n\
mantaMsg('Dissolving smoke')\n\
dissolveSmoke(flags=flags_s$ID$, density=density_s$ID$, heat=heat_s$ID$, red=color_r_s$ID$, green=color_g_s$ID$, blue=color_b_s$ID$, \
speed=dissolveSpeed_s$ID$, logFalloff=using_logdissolve_s$ID$, dissolveScale=s$ID$.timestep / frameLengthUnscaled_s$ID$)\n\
\n\
mantaMsg('Advecting density')\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=density_s$ID$, order=2)\n\
\n\
if using_heat_s$ID$:\n\
mantaMsg('Advecting heat')\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=heat_s$ID$, order=2)\n\
\n\
if using_fire_s$ID$:\n\
mantaMsg('Advecting fire')\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=fuel_s$ID$, order=2)\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=react_s$ID$, order=2)\n\
\n\
if using_colors_s$ID$:\n\
mantaMsg('Advecting colors')\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=color_r_s$ID$, order=2)\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=color_g_s$ID$, order=2)\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=color_b_s$ID$, order=2)\n\
\n\
mantaMsg('Advecting velocity')\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=vel_s$ID$, order=2)\n\
\n\
if not domainClosed_s$ID$ or using_outflow_s$ID$:\n\
resetOutflow(flags=flags_s$ID$, real=density_s$ID$)\n\
\n\
mantaMsg('Vorticity')\n\
if using_fire_s$ID$:\n\
flame_s$ID$.copyFrom(fuel_s$ID$) # temporarily misuse flame grid as vorticity storage\n\
flame_s$ID$.multConst(flameVorticity_s$ID$ * s$ID$.timestep / frameLengthUnscaled_s$ID$)\n\
vorticityConfinement(vel=vel_s$ID$, flags=flags_s$ID$, strength=vorticity_s$ID$ * s$ID$.timestep / frameLengthUnscaled_s$ID$, strengthCell=flame_s$ID$ if using_fire_s$ID$ else None)\n\
\n\
if using_heat_s$ID$:\n\
mantaMsg('Adding heat buoyancy')\n\
addBuoyancy(flags=flags_s$ID$, density=heat_s$ID$, vel=vel_s$ID$, gravity=gravity_s$ID$, coefficient=buoyancy_heat_s$ID$, scale=False)\n\
mantaMsg('Adding buoyancy')\n\
addBuoyancy(flags=flags_s$ID$, density=density_s$ID$, vel=vel_s$ID$, gravity=gravity_s$ID$, coefficient=buoyancy_dens_s$ID$, scale=False)\n\
\n\
mantaMsg('Adding forces')\n\
addForceField(flags=flags_s$ID$, vel=vel_s$ID$, force=forces_s$ID$)\n\
\n\
# Cells inside obstacle should not contain any density, fire, etc.\n\
if deleteInObstacle_s$ID$:\n\
resetInObstacle(flags=flags_s$ID$, density=density_s$ID$, vel=vel_s$ID$, heat=heat_s$ID$, fuel=fuel_s$ID$, flame=flame_s$ID$, red=color_r_s$ID$, green=color_g_s$ID$, blue=color_b_s$ID$)\n\
\n\
# add initial velocity\n\
if using_invel_s$ID$:\n\
# Using cell centered invels, will be converted to MAC within the function\n\
setInitialVelocity(flags=flags_s$ID$, vel=vel_s$ID$, invel=invelC_s$ID$)\n\
\n\
mantaMsg('Walls')\n\
setWallBcs(flags=flags_s$ID$, vel=vel_s$ID$, obvel=obvel_s$ID$ if using_obstacle_s$ID$ else None)\n\
\n\
preconditioner_s$ID$ = PcMGDynamic if using_obstacle_s$ID$ and obvel_s$ID$.getMax() > 0 else PcMGStatic\n\
mantaMsg('Using preconditioner: ' + str(preconditioner_s$ID$))\n\
if using_guiding_s$ID$:\n\
mantaMsg('Guiding and pressure')\n\
PD_fluid_guiding(vel=vel_s$ID$, velT=velT_s$ID$, flags=flags_s$ID$, weight=weightGuide_s$ID$, blurRadius=beta_sg$ID$, pressure=pressure_s$ID$, tau=tau_sg$ID$, sigma=sigma_sg$ID$, theta=theta_sg$ID$, preconditioner=preconditioner_s$ID$, zeroPressureFixing=domainClosed_s$ID$)\n\
else:\n\
mantaMsg('Pressure')\n\
solvePressure(flags=flags_s$ID$, vel=vel_s$ID$, pressure=pressure_s$ID$, preconditioner=preconditioner_s$ID$, zeroPressureFixing=domainClosed_s$ID$) # closed domains require pressure fixing\n\
\n\
def process_burn_$ID$():\n\
mantaMsg('Process burn')\n\
processBurn(fuel=fuel_s$ID$, density=density_s$ID$, react=react_s$ID$, red=color_r_s$ID$, green=color_g_s$ID$, blue=color_b_s$ID$, heat=heat_s$ID$, burningRate=burningRate_s$ID$, flameSmoke=flameSmoke_s$ID$, ignitionTemp=ignitionTemp_s$ID$, maxTemp=maxTemp_s$ID$, flameSmokeColor=flameSmokeColor_s$ID$)\n\
\n\
def update_flame_$ID$():\n\
mantaMsg('Update flame')\n\
updateFlame(react=react_s$ID$, flame=flame_s$ID$)\n";
const std::string smoke_step_noise =
"\n\
def smoke_step_noise_$ID$(framenr):\n\
mantaMsg('Manta step noise, frame ' + str(framenr))\n\
sn$ID$.frame = framenr\n\
\n\
copyRealToVec3(sourceX=texture_u_s$ID$, sourceY=texture_v_s$ID$, sourceZ=texture_w_s$ID$, target=uvGrid0_s$ID$)\n\
copyRealToVec3(sourceX=texture_u2_s$ID$, sourceY=texture_v2_s$ID$, sourceZ=texture_w2_s$ID$, target=uvGrid1_s$ID$)\n\
\n\
flags_sn$ID$.initDomain(boundaryWidth=0, phiWalls=phiObs_sn$ID$, outflow=boundConditions_s$ID$)\n\
\n\
mantaMsg('Interpolating grids')\n\
# Join big obstacle levelset after initDomain() call as it overwrites everything in phiObs\n\
if using_obstacle_s$ID$:\n\
phiIn_sn$ID$.copyFrom(phiObsIn_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(target=phiIn_sn$ID$, source=phiObsIn_s$ID$) # mis-use phiIn_sn\n\
phiObs_sn$ID$.join(phiIn_sn$ID$)\n\
if using_outflow_s$ID$:\n\
phiOut_sn$ID$.copyFrom(phiOut_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(target=phiOut_sn$ID$, source=phiOut_s$ID$)\n\
phiIn_sn$ID$.copyFrom(phiIn_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(target=phiIn_sn$ID$, source=phiIn_s$ID$)\n\
vel_sn$ID$.copyFrom(velTmp_s$ID$) if upres_sn$ID$ <= 1 else interpolateMACGrid(target=vel_sn$ID$, source=velTmp_s$ID$)\n\
\n\
setObstacleFlags(flags=flags_sn$ID$, phiObs=phiObs_sn$ID$, phiOut=phiOut_sn$ID$, phiIn=phiIn_sn$ID$, boundaryWidth=1)\n\
flags_sn$ID$.fillGrid()\n\
\n\
# Interpolate emission grids and apply them to big noise grids\n\
tmpIn_sn$ID$.copyFrom(densityIn_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(source=densityIn_s$ID$, target=tmpIn_sn$ID$)\n\
emissionIn_sn$ID$.copyFrom(emission_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(source=emission_s$ID$, target=emissionIn_sn$ID$)\n\
\n\
# Higher-res noise grid needs scaled emission values\n\
tmpIn_sn$ID$.multConst(float(upres_sn$ID$))\n\
applyEmission(flags=flags_sn$ID$, target=density_sn$ID$, source=tmpIn_sn$ID$, emissionTexture=emissionIn_sn$ID$, type=FlagInflow|FlagOutflow)\n\
\n\
if using_colors_s$ID$:\n\
tmpIn_sn$ID$.copyFrom(color_r_in_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(source=color_r_in_s$ID$, target=tmpIn_sn$ID$)\n\
applyEmission(flags=flags_sn$ID$, target=color_r_sn$ID$, source=tmpIn_sn$ID$, emissionTexture=emissionIn_sn$ID$, type=FlagInflow|FlagOutflow)\n\
tmpIn_sn$ID$.copyFrom(color_g_in_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(source=color_g_in_s$ID$, target=tmpIn_sn$ID$)\n\
applyEmission(flags=flags_sn$ID$, target=color_g_sn$ID$, source=tmpIn_sn$ID$, emissionTexture=emissionIn_sn$ID$, type=FlagInflow|FlagOutflow)\n\
tmpIn_sn$ID$.copyFrom(color_b_in_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(source=color_b_in_s$ID$, target=tmpIn_sn$ID$)\n\
applyEmission(flags=flags_sn$ID$, target=color_b_sn$ID$, source=tmpIn_sn$ID$, emissionTexture=emissionIn_sn$ID$, type=FlagInflow|FlagOutflow)\n\
\n\
if using_fire_s$ID$:\n\
tmpIn_sn$ID$.copyFrom(fuelIn_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(source=fuelIn_s$ID$, target=tmpIn_sn$ID$)\n\
applyEmission(flags=flags_sn$ID$, target=fuel_sn$ID$, source=tmpIn_sn$ID$, emissionTexture=emissionIn_sn$ID$, type=FlagInflow|FlagOutflow)\n\
tmpIn_sn$ID$.copyFrom(reactIn_s$ID$) if upres_sn$ID$ <= 1 else interpolateGrid(source=reactIn_s$ID$, target=tmpIn_sn$ID$)\n\
applyEmission(flags=flags_sn$ID$, target=react_sn$ID$, source=tmpIn_sn$ID$, emissionTexture=emissionIn_sn$ID$, type=FlagInflow|FlagOutflow)\n\
\n\
mantaMsg('Noise step / sn$ID$.frame: ' + str(sn$ID$.frame))\n\
if using_fire_s$ID$:\n\
process_burn_noise_$ID$()\n\
step_noise_$ID$()\n\
if using_fire_s$ID$:\n\
update_flame_noise_$ID$()\n\
\n\
sn$ID$.step()\n\
\n\
copyVec3ToReal(source=uvGrid0_s$ID$, targetX=texture_u_s$ID$, targetY=texture_v_s$ID$, targetZ=texture_w_s$ID$)\n\
copyVec3ToReal(source=uvGrid1_s$ID$, targetX=texture_u2_s$ID$, targetY=texture_v2_s$ID$, targetZ=texture_w2_s$ID$)\n\
\n\
def step_noise_$ID$():\n\
mantaMsg('Smoke step noise')\n\
\n\
if using_dissolve_s$ID$:\n\
mantaMsg('Dissolving noise')\n\
dissolveSmoke(flags=flags_sn$ID$, density=density_sn$ID$, heat=None, red=color_r_sn$ID$, green=color_g_sn$ID$, blue=color_b_sn$ID$, \
speed=dissolveSpeed_s$ID$, logFalloff=using_logdissolve_s$ID$, dissolveScale=s$ID$.timestep / frameLengthUnscaled_s$ID$)\n\
\n\
mantaMsg('Advecting UVs and updating UV weight')\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=uvGrid0_s$ID$, order=2)\n\
updateUvWeight(resetTime=sn$ID$.timestep*10.0 , index=0, numUvs=uvs_s$ID$, uv=uvGrid0_s$ID$, offset=uvs_offset_s$ID$)\n\
advectSemiLagrange(flags=flags_s$ID$, vel=vel_s$ID$, grid=uvGrid1_s$ID$, order=2)\n\
updateUvWeight(resetTime=sn$ID$.timestep*10.0 , index=1, numUvs=uvs_s$ID$, uv=uvGrid1_s$ID$, offset=uvs_offset_s$ID$)\n\
\n\
if not domainClosed_s$ID$ or using_outflow_s$ID$:\n\
resetOutflow(flags=flags_sn$ID$, real=density_sn$ID$)\n\
\n\
mantaMsg('Energy')\n\
computeEnergy(flags=flags_s$ID$, vel=vel_s$ID$, energy=energy_s$ID$)\n\
\n\
tmpFlags_s$ID$.copyFrom(flags_s$ID$)\n\
extrapolateSimpleFlags(flags=flags_s$ID$, val=tmpFlags_s$ID$, distance=2, flagFrom=FlagObstacle, flagTo=FlagFluid)\n\
extrapolateSimpleFlags(flags=tmpFlags_s$ID$, val=energy_s$ID$, distance=6, flagFrom=FlagFluid, flagTo=FlagObstacle)\n\
computeWaveletCoeffs(energy_s$ID$)\n\
\n\
sStr_s$ID$ = 1.0 * wltStrength_s$ID$\n\
sPos_s$ID$ = 2.0\n\
\n\
mantaMsg('Applying noise vec')\n\
for o in range(octaves_s$ID$):\n\
uvWeight_s$ID$ = getUvWeight(uvGrid0_s$ID$)\n\
applyNoiseVec3(flags=flags_sn$ID$, target=vel_sn$ID$, noise=wltnoise_sn$ID$, scale=sStr_s$ID$ * uvWeight_s$ID$, scaleSpatial=sPos_s$ID$ , weight=energy_s$ID$, uv=uvGrid0_s$ID$)\n\
uvWeight_s$ID$ = getUvWeight(uvGrid1_s$ID$)\n\
applyNoiseVec3(flags=flags_sn$ID$, target=vel_sn$ID$, noise=wltnoise_sn$ID$, scale=sStr_s$ID$ * uvWeight_s$ID$, scaleSpatial=sPos_s$ID$ , weight=energy_s$ID$, uv=uvGrid1_s$ID$)\n\
\n\
sStr_s$ID$ *= 0.06 # magic kolmogorov factor \n\
sPos_s$ID$ *= 2.0 \n\
\n\
for substep in range(int(upres_sn$ID$)):\n\
if using_colors_s$ID$: \n\
mantaMsg('Advecting colors noise')\n\
advectSemiLagrange(flags=flags_sn$ID$, vel=vel_sn$ID$, grid=color_r_sn$ID$, order=2)\n\
advectSemiLagrange(flags=flags_sn$ID$, vel=vel_sn$ID$, grid=color_g_sn$ID$, order=2)\n\
advectSemiLagrange(flags=flags_sn$ID$, vel=vel_sn$ID$, grid=color_b_sn$ID$, order=2)\n\
\n\
if using_fire_s$ID$: \n\
mantaMsg('Advecting fire noise')\n\
advectSemiLagrange(flags=flags_sn$ID$, vel=vel_sn$ID$, grid=fuel_sn$ID$, order=2)\n\
advectSemiLagrange(flags=flags_sn$ID$, vel=vel_sn$ID$, grid=react_sn$ID$, order=2)\n\
\n\
mantaMsg('Advecting density noise')\n\
advectSemiLagrange(flags=flags_sn$ID$, vel=vel_sn$ID$, grid=density_sn$ID$, order=2)\n\
\n\
def process_burn_noise_$ID$():\n\
mantaMsg('Process burn noise')\n\
processBurn(fuel=fuel_sn$ID$, density=density_sn$ID$, react=react_sn$ID$, red=color_r_sn$ID$, green=color_g_sn$ID$, blue=color_b_sn$ID$, burningRate=burningRate_s$ID$, flameSmoke=flameSmoke_s$ID$, ignitionTemp=ignitionTemp_s$ID$, maxTemp=maxTemp_s$ID$, flameSmokeColor=flameSmokeColor_s$ID$)\n\
\n\
def update_flame_noise_$ID$():\n\
mantaMsg('Update flame noise')\n\
updateFlame(react=react_sn$ID$, flame=flame_sn$ID$)\n";
//////////////////////////////////////////////////////////////////////
// IMPORT
//////////////////////////////////////////////////////////////////////
const std::string smoke_load_data =
"\n\
def smoke_load_data_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Smoke load data')\n\
dict = { **fluid_data_dict_final_s$ID$, **fluid_data_dict_resume_s$ID$, **smoke_data_dict_final_s$ID$, **smoke_data_dict_resume_s$ID$ } if resumable else { **fluid_data_dict_final_s$ID$, **smoke_data_dict_final_s$ID$ }\n\
fluid_file_import_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_data_s$ID$)\n\
\n\
copyVec3ToReal(source=vel_s$ID$, targetX=x_vel_s$ID$, targetY=y_vel_s$ID$, targetZ=z_vel_s$ID$)\n";
const std::string smoke_load_noise =
"\n\
def smoke_load_noise_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Smoke load noise')\n\
dict = { **smoke_noise_dict_final_s$ID$, **smoke_noise_dict_resume_s$ID$ } if resumable else { **smoke_noise_dict_final_s$ID$ } \n\
fluid_file_import_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_noise_s$ID$)\n\
\n\
if resumable:\n\
# Fill up xyz texture grids, important when resuming a bake\n\
copyVec3ToReal(source=uvGrid0_s$ID$, targetX=texture_u_s$ID$, targetY=texture_v_s$ID$, targetZ=texture_w_s$ID$)\n\
copyVec3ToReal(source=uvGrid1_s$ID$, targetX=texture_u2_s$ID$, targetY=texture_v2_s$ID$, targetZ=texture_w2_s$ID$)\n";
//////////////////////////////////////////////////////////////////////
// EXPORT
//////////////////////////////////////////////////////////////////////
const std::string smoke_save_data =
"\n\
def smoke_save_data_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Smoke save data')\n\
start_time = time.time()\n\
dict = { **fluid_data_dict_final_s$ID$, **fluid_data_dict_resume_s$ID$, **smoke_data_dict_final_s$ID$, **smoke_data_dict_resume_s$ID$ } if resumable else { **fluid_data_dict_final_s$ID$, **smoke_data_dict_final_s$ID$ } \n\
if not withMPSave or isWindows:\n\
fluid_file_export_s$ID$(dict=dict, path=path, framenr=framenr, file_format=file_format, file_name=file_data_s$ID$, clipGrid=density_s$ID$)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=fluid_file_export_s$ID$, file_name=file_data_s$ID$, framenr=framenr, format_data=file_format, path_data=path, dict=dict, do_join=False)\n\
mantaMsg('--- Save: %s seconds ---' % (time.time() - start_time))\n";
const std::string smoke_save_noise =
"\n\
def smoke_save_noise_$ID$(path, framenr, file_format, resumable):\n\
mantaMsg('Smoke save noise')\n\
dict = { **smoke_noise_dict_final_s$ID$, **smoke_noise_dict_resume_s$ID$ } if resumable else { **smoke_noise_dict_final_s$ID$ } \n\
if not withMPSave or isWindows:\n\
fluid_file_export_s$ID$(dict=dict, framenr=framenr, file_format=file_format, path=path, file_name=file_noise_s$ID$, clipGrid=density_sn$ID$)\n\
else:\n\
fluid_cache_multiprocessing_start_$ID$(function=fluid_file_export_s$ID$, file_name=file_noise_s$ID$, framenr=framenr, format_data=file_format, path_data=path, dict=dict, do_join=False)\n";
//////////////////////////////////////////////////////////////////////
// STANDALONE MODE
//////////////////////////////////////////////////////////////////////
const std::string smoke_standalone =
"\n\
# Helper function to call cache load functions\n\
def load_data(frame, cache_resumable):\n\
smoke_load_data_$ID$(os.path.join(cache_dir, 'data'), frame, file_format_data, cache_resumable)\n\
if using_noise_s$ID$:\n\
smoke_load_noise_$ID$(os.path.join(cache_dir, 'noise'), frame, file_format_data, cache_resumable)\n\
if using_guiding_s$ID$:\n\
fluid_load_guiding_$ID$(os.path.join(cache_dir, 'guiding'), frame, file_format_data)\n\
\n\
# Helper function to call step functions\n\
def step(frame):\n\
smoke_adaptive_step_$ID$(frame)\n\
if using_noise_s$ID$:\n\
smoke_step_noise_$ID$(frame)\n";