Add Chromium-only Blender WebEngine parity work
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mes123456
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blender-5.2.0/extern/opensubdiv-source/opensubdiv/far/topologyRefiner.h
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blender-5.2.0/extern/opensubdiv-source/opensubdiv/far/topologyRefiner.h
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//
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// Copyright 2014 DreamWorks Animation LLC.
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//
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// Licensed under the terms set forth in the LICENSE.txt file available at
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// https://opensubdiv.org/license.
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//
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#ifndef OPENSUBDIV3_FAR_TOPOLOGY_REFINER_H
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#define OPENSUBDIV3_FAR_TOPOLOGY_REFINER_H
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#include "../version.h"
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#include "../sdc/types.h"
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#include "../sdc/options.h"
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#include "../far/types.h"
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#include "../far/topologyLevel.h"
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#include <vector>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Vtr { namespace internal { class SparseSelector; } }
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namespace Far { namespace internal { class FeatureMask; } }
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namespace Far {
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template <typename REAL> class PrimvarRefinerReal;
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template <class MESH> class TopologyRefinerFactory;
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///
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/// \brief Stores topology data for a specified set of refinement options.
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///
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class TopologyRefiner {
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public:
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/// \brief Constructor
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TopologyRefiner(Sdc::SchemeType type, Sdc::Options options = Sdc::Options());
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/// \brief Destructor
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~TopologyRefiner();
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/// \brief Returns the subdivision scheme
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Sdc::SchemeType GetSchemeType() const { return _subdivType; }
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/// \brief Returns the subdivision options
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Sdc::Options GetSchemeOptions() const { return _subdivOptions; }
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/// \brief Returns true if uniform refinement has been applied
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bool IsUniform() const { return _isUniform; }
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/// \brief Returns the number of refinement levels
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int GetNumLevels() const { return (int)_farLevels.size(); }
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/// \brief Returns the highest level of refinement
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int GetMaxLevel() const { return _maxLevel; }
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/// \brief Returns the maximum vertex valence in all levels
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int GetMaxValence() const { return _maxValence; }
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/// \brief Returns true if faces have been tagged as holes
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bool HasHoles() const { return _hasHoles; }
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/// \brief Returns the total number of vertices in all levels
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int GetNumVerticesTotal() const { return _totalVertices; }
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/// \brief Returns the total number of edges in all levels
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int GetNumEdgesTotal() const { return _totalEdges; }
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/// \brief Returns the total number of edges in all levels
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int GetNumFacesTotal() const { return _totalFaces; }
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/// \brief Returns the total number of face vertices in all levels
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int GetNumFaceVerticesTotal() const { return _totalFaceVertices; }
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/// \brief Returns a handle to access data specific to a particular level
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TopologyLevel const & GetLevel(int level) const { return _farLevels[level]; }
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//@{
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/// @name High-level refinement and related methods
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///
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//
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// Uniform refinement
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//
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/// \brief Uniform refinement options
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///
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/// Options for uniform refinement, including the number of levels, vertex
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/// ordering and generation of topology information.
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///
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/// Note the impact of the option to generate fullTopologyInLastLevel. Given
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/// subsequent levels of uniform refinement typically reguire 4x the data
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/// of the previous level, only the minimum amount of data is generated in the
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/// last level by default, i.e. a vertex and face-vertex list. If requiring
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/// topology traversal of the last level, e.g. inspecting edges or incident
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/// faces of vertices, the option to generate full topology in the last
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/// level should be enabled.
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///
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struct UniformOptions {
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UniformOptions(int level) :
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refinementLevel(level & 0xf),
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orderVerticesFromFacesFirst(false),
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fullTopologyInLastLevel(false) { }
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/// \brief Set uniform refinement level
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void SetRefinementLevel(int level) { refinementLevel = level & 0xf; }
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unsigned int refinementLevel:4, ///< Number of refinement iterations
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orderVerticesFromFacesFirst:1, ///< Order child vertices from faces first
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///< instead of child vertices of vertices
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fullTopologyInLastLevel:1; ///< Skip topological relationships in the last
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///< level of refinement that are not needed for
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///< interpolation (keep false if using limit).
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};
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/// \brief Refine the topology uniformly
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///
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/// This method applies uniform refinement to the level specified in the
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/// given UniformOptions.
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///
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/// Note the impact of the UniformOption to generate fullTopologyInLastLevel
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/// and be sure it is assigned to satisfy the needs of the resulting refinement.
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///
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/// @param options Options controlling uniform refinement
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///
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void RefineUniform(UniformOptions options);
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/// \brief Returns the options specified on refinement
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UniformOptions GetUniformOptions() const { return _uniformOptions; }
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//
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// Adaptive refinement
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//
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/// \brief Adaptive refinement options
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struct AdaptiveOptions {
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AdaptiveOptions(int level) :
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isolationLevel(level & 0xf),
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secondaryLevel(0xf),
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useSingleCreasePatch(false),
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useInfSharpPatch(false),
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considerFVarChannels(false),
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orderVerticesFromFacesFirst(false) { }
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/// \brief Set isolation level
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void SetIsolationLevel(int level) { isolationLevel = level & 0xf; }
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/// \brief Set secondary isolation level
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void SetSecondaryLevel(int level) { secondaryLevel = level & 0xf; }
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unsigned int isolationLevel:4; ///< Number of iterations applied to isolate
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///< extraordinary vertices and creases
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unsigned int secondaryLevel:4; ///< Shallower level to stop isolation of
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///< smooth irregular features
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unsigned int useSingleCreasePatch:1; ///< Use 'single-crease' patch and stop
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///< isolation where applicable
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unsigned int useInfSharpPatch:1; ///< Use infinitely sharp patches and stop
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///< isolation where applicable
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unsigned int considerFVarChannels:1; ///< Inspect face-varying channels and
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///< isolate when irregular features present
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unsigned int orderVerticesFromFacesFirst:1; ///< Order child vertices from faces first
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///< instead of child vertices of vertices
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};
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/// \brief Feature Adaptive topology refinement
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///
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/// @param options Options controlling adaptive refinement
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///
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/// @param selectedFaces Limit adaptive refinement to the specified faces
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///
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void RefineAdaptive(AdaptiveOptions options,
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ConstIndexArray selectedFaces = ConstIndexArray());
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/// \brief Returns the options specified on refinement
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AdaptiveOptions GetAdaptiveOptions() const { return _adaptiveOptions; }
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/// \brief Unrefine the topology, keeping only the base level.
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void Unrefine();
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//@{
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/// @name Number and properties of face-varying channels:
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///
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/// \brief Returns the number of face-varying channels in the tables
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int GetNumFVarChannels() const;
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/// \brief Returns the face-varying interpolation rule set for a given channel
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Sdc::Options::FVarLinearInterpolation GetFVarLinearInterpolation(int channel = 0) const;
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/// \brief Returns the total number of face-varying values in all levels
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int GetNumFVarValuesTotal(int channel = 0) const;
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//@}
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protected:
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//
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// Lower level protected methods intended strictly for internal use:
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//
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template <class MESH>
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friend class TopologyRefinerFactory;
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friend class TopologyRefinerFactoryBase;
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friend class PatchTableBuilder;
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friend class PatchBuilder;
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friend class PtexIndices;
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template <typename REAL>
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friend class PrimvarRefinerReal;
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// Copy constructor exposed via the factory class:
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TopologyRefiner(TopologyRefiner const & source);
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public:
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// Levels and Refinements available internally (avoids need for more friends)
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Vtr::internal::Level & getLevel(int l) { return *_levels[l]; }
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Vtr::internal::Level const & getLevel(int l) const { return *_levels[l]; }
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Vtr::internal::Refinement & getRefinement(int l) { return *_refinements[l]; }
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Vtr::internal::Refinement const & getRefinement(int l) const { return *_refinements[l]; }
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private:
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// Not default constructible or copyable:
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TopologyRefiner() : _uniformOptions(0), _adaptiveOptions(0) { }
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TopologyRefiner & operator=(TopologyRefiner const &) { return *this; }
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void selectFeatureAdaptiveComponents(Vtr::internal::SparseSelector& selector,
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internal::FeatureMask const & mask,
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ConstIndexArray selectedFaces);
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void selectLinearIrregularFaces(Vtr::internal::SparseSelector& selector,
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ConstIndexArray selectedFaces);
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void initializeInventory();
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void updateInventory(Vtr::internal::Level const & newLevel);
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void appendLevel(Vtr::internal::Level & newLevel);
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void appendRefinement(Vtr::internal::Refinement & newRefinement);
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void assembleFarLevels();
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private:
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Sdc::SchemeType _subdivType;
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Sdc::Options _subdivOptions;
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unsigned int _isUniform : 1;
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unsigned int _hasHoles : 1;
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unsigned int _hasIrregFaces : 1;
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unsigned int _regFaceSize : 3;
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unsigned int _maxLevel : 4;
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// Options assigned on refinement:
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UniformOptions _uniformOptions;
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AdaptiveOptions _adaptiveOptions;
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// Cumulative properties of all levels:
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int _totalVertices;
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int _totalEdges;
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int _totalFaces;
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int _totalFaceVertices;
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int _maxValence;
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// Note the base level may be shared with another instance
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bool _baseLevelOwned;
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std::vector<Vtr::internal::Level *> _levels;
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std::vector<Vtr::internal::Refinement *> _refinements;
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std::vector<TopologyLevel> _farLevels;
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};
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inline int
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TopologyRefiner::GetNumFVarChannels() const {
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return _levels[0]->getNumFVarChannels();
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}
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inline Sdc::Options::FVarLinearInterpolation
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TopologyRefiner::GetFVarLinearInterpolation(int channel) const {
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return _levels[0]->getFVarOptions(channel).GetFVarLinearInterpolation();
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}
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} // end namespace Far
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} // end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif /* OPENSUBDIV3_FAR_TOPOLOGY_REFINER_H */
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