142 lines
3.9 KiB
C++
142 lines
3.9 KiB
C++
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#pragma once
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#include "scene/geometry.h"
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CCL_NAMESPACE_BEGIN
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struct KernelCurveSegment;
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class Hair : public Geometry {
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public:
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NODE_DECLARE
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/* Hair Curve */
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struct Curve {
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int first_key;
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int num_keys;
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int num_segments() const
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{
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return num_keys - 1;
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}
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void bounds_grow(const int k,
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const packed_float3 *curve_keys,
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const float *curve_radius,
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BoundBox &bounds) const;
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void bounds_grow(const int k, const float4 *keys, BoundBox &bounds) const;
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void bounds_grow(const float4 keys[4], BoundBox &bounds) const;
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void bounds_grow(const int k,
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const packed_float3 *curve_keys,
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const float *curve_radius,
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const Transform &aligned_space,
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BoundBox &bounds) const;
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void motion_keys(const Attribute *attr_P,
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const Attribute *attr_R,
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const size_t num_steps,
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const float time,
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size_t k0,
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size_t k1,
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float4 r_keys[2]) const;
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void cardinal_motion_keys(const Attribute *attr_P,
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const Attribute *attr_R,
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const size_t num_steps,
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const float time,
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size_t k0,
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size_t k1,
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size_t k2,
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size_t k3,
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float4 r_keys[4]) const;
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void keys_for_step(const Attribute *attr_P,
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const Attribute *attr_R,
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const size_t step,
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size_t k0,
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size_t k1,
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float4 r_keys[2]) const;
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void cardinal_keys_for_step(const Attribute *attr_P,
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const Attribute *attr_R,
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const size_t step,
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size_t k0,
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size_t k1,
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size_t k2,
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size_t k3,
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float4 r_keys[4]) const;
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};
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NODE_SOCKET_API_ARRAY(array<int>, curve_first_key)
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NODE_SOCKET_API_ARRAY(array<int>, curve_shader)
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/* BVH */
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size_t curve_segment_offset;
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CurveShapeType curve_shape;
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/* Constructor/Destructor */
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Hair();
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~Hair() override;
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/* Geometry */
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void clear(bool preserve_shaders = false) override;
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void resize_curves(const int numcurves, const int numkeys);
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void copy_center_to_motion_step(const int motion_step);
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void compute_bounds() override;
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void apply_transform(const Transform &tfm, const bool apply_to_motion) override;
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/* Curves */
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Curve get_curve(const size_t i) const
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{
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const int first = curve_first_key[i];
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const int next_first = (i + 1 < curve_first_key.size()) ? curve_first_key[i + 1] : num_keys();
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Curve curve = {first, next_first - first};
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return curve;
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}
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size_t num_keys() const
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{
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const Attribute *attr = attributes.find(ATTR_STD_POSITION);
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return attr ? attr->size : 0;
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}
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size_t num_curves() const
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{
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return curve_first_key.size();
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}
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size_t num_segments() const
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{
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return num_keys() - curve_first_key.size();
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}
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bool is_traceable() const
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{
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return num_segments() > 0;
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}
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/* UDIM */
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void get_uv_tiles(ustring map, unordered_set<int> &tiles) override;
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/* BVH */
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void pack_curves(Scene *scene, KernelCurve *curve, KernelCurveSegment *curve_segments);
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PrimitiveType primitive_type() const override;
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/* Attributes */
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bool need_shadow_transparency() const;
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bool need_update_shadow_transparency() const;
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bool update_shadow_transparency(Device *device, Scene *scene, Progress &progress);
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private:
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void add_builtin_attributes();
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};
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CCL_NAMESPACE_END
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