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Diffstat (limited to 'intern/opensubdiv/internal/opensubdiv_topology_refiner.cc')
| -rw-r--r-- | intern/opensubdiv/internal/opensubdiv_topology_refiner.cc | 672 |
1 files changed, 0 insertions, 672 deletions
diff --git a/intern/opensubdiv/internal/opensubdiv_topology_refiner.cc b/intern/opensubdiv/internal/opensubdiv_topology_refiner.cc deleted file mode 100644 index ac27cbdefdc..00000000000 --- a/intern/opensubdiv/internal/opensubdiv_topology_refiner.cc +++ /dev/null @@ -1,672 +0,0 @@ -// Copyright 2018 Blender Foundation. All rights reserved. -// -// This program is free software; you can redistribute it and/or -// modify it under the terms of the GNU General Public License -// as published by the Free Software Foundation; either version 2 -// of the License, or (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software Foundation, -// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. -// -// Author: Sergey Sharybin - -#include "opensubdiv_topology_refiner_capi.h" - -#include <vector> - -#include "MEM_guardedalloc.h" -#include "internal/opensubdiv_converter_factory.h" -#include "internal/opensubdiv_converter_internal.h" -#include "internal/opensubdiv_edge_map.h" -#include "internal/opensubdiv_internal.h" -#include "internal/opensubdiv_topology_refiner_internal.h" -#include "internal/opensubdiv_util.h" - -using opensubdiv_capi::vector; - -namespace { - -const OpenSubdiv::Far::TopologyRefiner *getOSDTopologyRefiner( - const OpenSubdiv_TopologyRefiner *topology_refiner) -{ - return topology_refiner->internal->osd_topology_refiner; -} - -const OpenSubdiv::Far::TopologyLevel *getOSDTopologyBaseLevel( - const OpenSubdiv_TopologyRefiner *topology_refiner) -{ - return &getOSDTopologyRefiner(topology_refiner)->GetLevel(0); -} - -int getSubdivisionLevel(const OpenSubdiv_TopologyRefiner *topology_refiner) -{ - return topology_refiner->internal->settings.level; -} - -bool getIsAdaptive(const OpenSubdiv_TopologyRefiner *topology_refiner) -{ - return topology_refiner->internal->settings.is_adaptive; -} - -//////////////////////////////////////////////////////////////////////////////// -// Query basic topology information from base level. - -int getNumVertices(const OpenSubdiv_TopologyRefiner *topology_refiner) -{ - return getOSDTopologyBaseLevel(topology_refiner)->GetNumVertices(); -} - -int getNumEdges(const OpenSubdiv_TopologyRefiner *topology_refiner) -{ - return getOSDTopologyBaseLevel(topology_refiner)->GetNumEdges(); -} - -int getNumFaces(const OpenSubdiv_TopologyRefiner *topology_refiner) -{ - return getOSDTopologyBaseLevel(topology_refiner)->GetNumFaces(); -} - -//////////////////////////////////////////////////////////////////////////////// -// PTex face geometry queries. - -static void convertArrayToRaw(const OpenSubdiv::Far::ConstIndexArray &array, int *raw_array) -{ - for (int i = 0; i < array.size(); ++i) { - raw_array[i] = array[i]; - } -} - -int getNumFaceVertices(const OpenSubdiv_TopologyRefiner *topology_refiner, const int face_index) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - return base_level->GetFaceVertices(face_index).size(); -} - -void getFaceVertices(const OpenSubdiv_TopologyRefiner *topology_refiner, - const int face_index, - int *face_vertices_indices) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - OpenSubdiv::Far::ConstIndexArray array = base_level->GetFaceVertices(face_index); - convertArrayToRaw(array, face_vertices_indices); -} - -int getNumFaceEdges(const OpenSubdiv_TopologyRefiner *topology_refiner, const int face_index) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - return base_level->GetFaceEdges(face_index).size(); -} - -void getFaceEdges(const OpenSubdiv_TopologyRefiner *topology_refiner, - const int face_index, - int *face_edges_indices) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - OpenSubdiv::Far::ConstIndexArray array = base_level->GetFaceEdges(face_index); - convertArrayToRaw(array, face_edges_indices); -} - -void getEdgeVertices(const OpenSubdiv_TopologyRefiner *topology_refiner, - const int edge_index, - int edge_vertices_indices[2]) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - OpenSubdiv::Far::ConstIndexArray array = base_level->GetEdgeVertices(edge_index); - assert(array.size() == 2); - edge_vertices_indices[0] = array[0]; - edge_vertices_indices[1] = array[1]; -} - -int getNumVertexEdges(const OpenSubdiv_TopologyRefiner *topology_refiner, const int vertex_index) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - return base_level->GetVertexEdges(vertex_index).size(); -} - -void getVertexEdges(const OpenSubdiv_TopologyRefiner *topology_refiner, - const int vertex_index, - int *vertex_edges_indices) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - OpenSubdiv::Far::ConstIndexArray array = base_level->GetVertexEdges(vertex_index); - convertArrayToRaw(array, vertex_edges_indices); -} - -int getNumFacePtexFaces(const OpenSubdiv_TopologyRefiner *topology_refiner, const int face_index) -{ - const int num_face_vertices = topology_refiner->getNumFaceVertices(topology_refiner, face_index); - if (num_face_vertices == 4) { - return 1; - } - else { - return num_face_vertices; - } -} - -int getNumPtexFaces(const OpenSubdiv_TopologyRefiner *topology_refiner) -{ - const int num_faces = topology_refiner->getNumFaces(topology_refiner); - int num_ptex_faces = 0; - for (int face_index = 0; face_index < num_faces; ++face_index) { - num_ptex_faces += topology_refiner->getNumFacePtexFaces(topology_refiner, face_index); - } - return num_ptex_faces; -} - -void fillFacePtexIndexOffset(const OpenSubdiv_TopologyRefiner *topology_refiner, - int *face_ptex_index_offset) -{ - const int num_faces = topology_refiner->getNumFaces(topology_refiner); - int num_ptex_faces = 0; - for (int face_index = 0; face_index < num_faces; ++face_index) { - face_ptex_index_offset[face_index] = num_ptex_faces; - num_ptex_faces += topology_refiner->getNumFacePtexFaces(topology_refiner, face_index); - } -} - -//////////////////////////////////////////////////////////////////////////////// -// Face-varying data. - -int getNumFVarChannels(const struct OpenSubdiv_TopologyRefiner *topology_refiner) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - return base_level->GetNumFVarChannels(); -} - -OpenSubdiv_FVarLinearInterpolation getFVarLinearInterpolation( - const struct OpenSubdiv_TopologyRefiner *topology_refiner) -{ - return opensubdiv_capi::getCAPIFVarLinearInterpolationFromOSD( - getOSDTopologyRefiner(topology_refiner)->GetFVarLinearInterpolation()); -} - -int getNumFVarValues(const struct OpenSubdiv_TopologyRefiner *topology_refiner, const int channel) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - return base_level->GetNumFVarValues(channel); -} - -const int *getFaceFVarValueIndices(const struct OpenSubdiv_TopologyRefiner *topology_refiner, - const int face_index, - const int channel) -{ - const OpenSubdiv::Far::TopologyLevel *base_level = getOSDTopologyBaseLevel(topology_refiner); - return &base_level->GetFaceFVarValues(face_index, channel)[0]; -} - -//////////////////////////////////////////////////////////////////////////////// -// Internal helpers. - -void assignFunctionPointers(OpenSubdiv_TopologyRefiner *topology_refiner) -{ - topology_refiner->getSubdivisionLevel = getSubdivisionLevel; - topology_refiner->getIsAdaptive = getIsAdaptive; - // Basic topology information. - topology_refiner->getNumVertices = getNumVertices; - topology_refiner->getNumEdges = getNumEdges; - topology_refiner->getNumFaces = getNumFaces; - topology_refiner->getNumFaceVertices = getNumFaceVertices; - topology_refiner->getFaceVertices = getFaceVertices; - topology_refiner->getNumFaceEdges = getNumFaceEdges; - topology_refiner->getFaceEdges = getFaceEdges; - topology_refiner->getEdgeVertices = getEdgeVertices; - topology_refiner->getNumVertexEdges = getNumVertexEdges; - topology_refiner->getVertexEdges = getVertexEdges; - // PTex face geometry. - topology_refiner->getNumFacePtexFaces = getNumFacePtexFaces; - topology_refiner->getNumPtexFaces = getNumPtexFaces; - topology_refiner->fillFacePtexIndexOffset = fillFacePtexIndexOffset; - // Face-varying data. - topology_refiner->getNumFVarChannels = getNumFVarChannels; - topology_refiner->getFVarLinearInterpolation = getFVarLinearInterpolation; - topology_refiner->getNumFVarValues = getNumFVarValues; - topology_refiner->getFaceFVarValueIndices = getFaceFVarValueIndices; -} - -OpenSubdiv_TopologyRefiner *allocateTopologyRefiner() -{ - OpenSubdiv_TopologyRefiner *topology_refiner = OBJECT_GUARDED_NEW(OpenSubdiv_TopologyRefiner); - topology_refiner->internal = OBJECT_GUARDED_NEW(OpenSubdiv_TopologyRefinerInternal); - assignFunctionPointers(topology_refiner); - return topology_refiner; -} - -} // namespace - -OpenSubdiv_TopologyRefiner *openSubdiv_createTopologyRefinerFromConverter( - OpenSubdiv_Converter *converter, const OpenSubdiv_TopologyRefinerSettings *settings) -{ - OpenSubdiv::Far::TopologyRefiner *osd_topology_refiner = - opensubdiv_capi::createOSDTopologyRefinerFromConverter(converter); - if (osd_topology_refiner == NULL) { - // Happens on empty or bad topology. - return NULL; - } - OpenSubdiv_TopologyRefiner *topology_refiner = allocateTopologyRefiner(); - topology_refiner->internal->osd_topology_refiner = osd_topology_refiner; - // Store setting which we want to keep track of and which can not be stored - // in OpenSubdiv's descriptor yet. - topology_refiner->internal->settings = *settings; - return topology_refiner; -} - -void openSubdiv_deleteTopologyRefiner(OpenSubdiv_TopologyRefiner *topology_refiner) -{ - OBJECT_GUARDED_DELETE(topology_refiner->internal, OpenSubdiv_TopologyRefinerInternal); - OBJECT_GUARDED_DELETE(topology_refiner, OpenSubdiv_TopologyRefiner); -} - -//////////////////////////////////////////////////////////////////////////////// -// Comparison with converter. - -namespace opensubdiv_capi { -namespace { - -/////////////////////////////////////////////////////////// -// Quick preliminary checks. - -bool checkSchemeTypeMatches(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - const OpenSubdiv::Sdc::SchemeType converter_scheme_type = opensubdiv_capi::getSchemeTypeFromCAPI( - converter->getSchemeType(converter)); - return (converter_scheme_type == topology_refiner->GetSchemeType()); -} - -bool checkOptionsMatches(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - typedef OpenSubdiv::Sdc::Options Options; - const Options options = topology_refiner->GetSchemeOptions(); - const Options::FVarLinearInterpolation fvar_interpolation = options.GetFVarLinearInterpolation(); - const Options::FVarLinearInterpolation converter_fvar_interpolation = - opensubdiv_capi::getFVarLinearInterpolationFromCAPI( - converter->getFVarLinearInterpolation(converter)); - if (fvar_interpolation != converter_fvar_interpolation) { - return false; - } - return true; -} - -bool checkGeometryCountersMatches(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - using OpenSubdiv::Far::TopologyLevel; - const TopologyLevel &base_level = topology_refiner->GetLevel(0); - return ((converter->getNumVertices(converter) == base_level.GetNumVertices()) && - (converter->getNumEdges(converter) == base_level.GetNumEdges()) && - (converter->getNumFaces(converter) == base_level.GetNumFaces())); -} - -bool checkPreliminaryMatches(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - return checkSchemeTypeMatches(topology_refiner, converter) && - checkOptionsMatches(topology_refiner, converter) && - checkGeometryCountersMatches(topology_refiner, converter); -} - -/////////////////////////////////////////////////////////// -// Geometry comparison. - -// A thin wrapper around index like array which does cyclic access. This means, -// it basically does indices[requested_index % num_indices]. -// -// NOTE: This array does not own the memory. -// -// TODO(sergey): Consider moving this to a more reusable place. -class CyclicArray { - public: - typedef int value_type; - typedef int size_type; - static constexpr size_type npos = -1; - - explicit CyclicArray(const std::vector<int> &data) : data_(data.data()), size_(data.size()) - { - } - - explicit CyclicArray(const OpenSubdiv::Far::ConstIndexArray &data) - : data_(&data[0]), size_(data.size()) - { - } - - inline value_type operator[](int index) const - { - assert(index >= 0); - // TODO(sergey): Check whether doing check for element index exceeding total - // number of indices prior to modulo helps performance. - return data_[index % size()]; - } - - inline size_type size() const - { - return size_; - } - - // Find index of first occurrence of a given value. - inline size_type find(const value_type value) const - { - const int num_indices = size(); - for (size_type i = 0; i < num_indices; ++i) { - if (value == (*this)[i]) { - return i; - } - } - return npos; - } - - protected: - const value_type *data_; - const size_type size_; -}; - -bool compareCyclicForward(const CyclicArray &array_a, - const int start_a, - const CyclicArray &array_b, - const int start_b) -{ - const int num_elements = array_a.size(); - for (int i = 0; i < num_elements; ++i) { - if (array_a[start_a + i] != array_b[start_b + i]) { - return false; - } - } - return true; -} - -bool compareCyclicBackward(const CyclicArray &array_a, - const int start_a, - const CyclicArray &array_b, - const int start_b) -{ - const int num_elements = array_a.size(); - // TODO(sergey): Some optimization might be possible with memcmp trickery. - for (int i = 0; i < num_elements; ++i) { - if (array_a[start_a + (num_elements - i - 1)] != array_b[start_b + (num_elements - i - 1)]) { - return false; - } - } - return true; -} - -// Utility function dedicated for checking whether whether vertices indices -// used by two faces match. -// The tricky part here is that we can't trust 1:1 array match here, since it's -// possible that OpenSubdiv oriented edges of a face to make it compatible with -// an internal representation of non-manifold meshes. -// -// TODO(sergey): Check whether this is needed, ot whether OpenSubdiv is only -// creating edges in a proper orientation without modifying indices of face -// vertices. -bool checkVerticesOfFacesMatch(const CyclicArray &indices_a, const CyclicArray &indices_b) -{ - if (indices_a.size() != indices_b.size()) { - return false; - } - // "Align" the arrays so we know first matched element. - const int start_b = indices_b.find(indices_a[0]); - if (start_b == indices_b.npos) { - return false; - } - // Check match in both directions, for the case OpenSubdiv did orient face in - // a way which made normals more consistent internally. - if (compareCyclicForward(indices_a, 0, indices_b, start_b)) { - return true; - } - if (compareCyclicBackward(indices_a, 0, indices_b, start_b)) { - return true; - } - return false; -} - -bool checkGeometryFacesMatch(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - using OpenSubdiv::Far::ConstIndexArray; - using OpenSubdiv::Far::TopologyLevel; - const TopologyLevel &base_level = topology_refiner->GetLevel(0); - const int num_faces = base_level.GetNumFaces(); - // TODO(sergey): Consider using data structure which keeps handful of - // elements on stack before doing heep allocation. - vector<int> conv_face_vertices; - for (int face_index = 0; face_index < num_faces; ++face_index) { - const ConstIndexArray &face_vertices = base_level.GetFaceVertices(face_index); - const int num_face_vertices = face_vertices.size(); - if (num_face_vertices != converter->getNumFaceVertices(converter, face_index)) { - return false; - } - conv_face_vertices.resize(num_face_vertices); - converter->getFaceVertices(converter, face_index, &conv_face_vertices[0]); - if (!checkVerticesOfFacesMatch(CyclicArray(conv_face_vertices), CyclicArray(face_vertices))) { - return false; - } - } - return true; -} - -bool checkGeometryMatches(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - // NOTE: Since OpenSubdiv's topology refiner doesn't contain loose edges, we - // are only checking for faces to be matched. Changes in edges we don't care - // here too much (they'll be checked for creases changes later). - return checkGeometryFacesMatch(topology_refiner, converter); -} - -/////////////////////////////////////////////////////////// -// Compare attributes which affects on topology - -inline bool checkSingleEdgeSharpnessMatch(const OpenSubdiv::Far::TopologyLevel &base_level, - int base_level_edge_index, - const OpenSubdiv_Converter *converter, - int converter_edge_index) -{ - // NOTE: Boundary and non-manifold edges are internally forced to an infinite - // sharpness. So we can not reliably compare those. - // - // TODO(sergey): Watch for NON_MANIFOLD_SHARP option. - if (base_level.IsEdgeBoundary(base_level_edge_index) || - base_level.IsEdgeNonManifold(base_level_edge_index)) { - return true; - } - const float sharpness = base_level.GetEdgeSharpness(base_level_edge_index); - const float converter_sharpness = converter->getEdgeSharpness(converter, converter_edge_index); - if (sharpness != converter_sharpness) { - return false; - } - return true; -} - -inline bool checkSingleEdgeTagMatch(const OpenSubdiv::Far::TopologyLevel &base_level, - int base_level_edge_index, - const OpenSubdiv_Converter *converter, - int converter_edge_index) -{ - return checkSingleEdgeSharpnessMatch( - base_level, base_level_edge_index, converter, converter_edge_index); -} - -// Compares edge tags between topology refiner and converter in a case when -// converter specifies a full topology. -// This is simplest loop, since we know that order of edges matches. -bool checkEdgeTagsMatchFullTopology(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - using OpenSubdiv::Far::ConstIndexArray; - using OpenSubdiv::Far::TopologyLevel; - const TopologyLevel &base_level = topology_refiner->GetLevel(0); - const int num_edges = base_level.GetNumEdges(); - for (int edge_index = 0; edge_index < num_edges; ++edge_index) { - if (!checkSingleEdgeTagMatch(base_level, edge_index, converter, edge_index)) { - return false; - } - } - return true; -} - -// Compares tags of edges in the case when orientation of edges is left up to -// OpenSubdiv. In this case we do need to take care of mapping edges from the -// converter to current topology refiner, since the order is not guaranteed. -bool checkEdgeTagsMatchAutoOrient(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - using OpenSubdiv::Far::ConstIndexArray; - using OpenSubdiv::Far::TopologyLevel; - const TopologyLevel &base_level = topology_refiner->GetLevel(0); - const int num_edges = base_level.GetNumEdges(); - // Create mapping for quick lookup of edge index from its vertices indices. - // - // TODO(sergey): Consider caching it in some sort of wrapper around topology - // refiner. - EdgeTagMap<int> edge_map; - for (int edge_index = 0; edge_index < num_edges; ++edge_index) { - ConstIndexArray edge_vertices = base_level.GetEdgeVertices(edge_index); - edge_map.insert(edge_vertices[0], edge_vertices[1], edge_index); - } - // Compare all edges. - for (int converter_edge_index = 0; converter_edge_index < num_edges; ++converter_edge_index) { - // Get edge vertices indices, and lookup corresponding edge index in the - // base topology level. - int edge_vertices[2]; - converter->getEdgeVertices(converter, converter_edge_index, edge_vertices); - const int base_level_edge_index = edge_map.at(edge_vertices[0], edge_vertices[1]); - // Perform actual test. - if (!checkSingleEdgeTagMatch( - base_level, base_level_edge_index, converter, converter_edge_index)) { - return false; - } - } - return true; -} - -bool checkEdgeTagsMatch(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - if (converter->specifiesFullTopology(converter)) { - return checkEdgeTagsMatchFullTopology(topology_refiner, converter); - } - else { - return checkEdgeTagsMatchAutoOrient(topology_refiner, converter); - } -} - -bool checkvertexSharpnessMatch(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - using OpenSubdiv::Far::ConstIndexArray; - using OpenSubdiv::Far::TopologyLevel; - using OpenSubdiv::Sdc::Crease; - const TopologyLevel &base_level = topology_refiner->GetLevel(0); - // Create mapping for quick lookup of edge index from its vertices indices. - // - // TODO(sergey): Consider caching it in some sort of wrapper around topology - // refiner. - const int num_edges = base_level.GetNumEdges(); - EdgeTagMap<int> edge_map; - for (int edge_index = 0; edge_index < num_edges; ++edge_index) { - int edge_vertices[2]; - converter->getEdgeVertices(converter, edge_index, edge_vertices); - edge_map.insert(edge_vertices[0], edge_vertices[1], edge_index); - } - const int num_vertices = base_level.GetNumVertices(); - for (int vertex_index = 0; vertex_index < num_vertices; ++vertex_index) { - const float current_sharpness = base_level.GetVertexSharpness(vertex_index); - if (converter->isInfiniteSharpVertex(converter, vertex_index)) { - if (current_sharpness != Crease::SHARPNESS_INFINITE) { - return false; - } - } - else { - ConstIndexArray vertex_edges = base_level.GetVertexEdges(vertex_index); - float sharpness = converter->getVertexSharpness(converter, vertex_index); - if (vertex_edges.size() == 2) { - const int edge0 = vertex_edges[0], edge1 = vertex_edges[1]; - // Construct keys for lookup. - ConstIndexArray edge0_vertices = base_level.GetEdgeVertices(edge0); - ConstIndexArray edge1_vertices = base_level.GetEdgeVertices(edge1); - EdgeKey edge0_key(edge0_vertices[0], edge0_vertices[1]); - EdgeKey edge1_key(edge1_vertices[0], edge1_vertices[1]); - // Lookup edge indices in the converter. - const int edge0_converter_index = edge_map[edge0_key]; - const int edge1_converter_index = edge_map[edge1_key]; - // Lookup sharpness. - const float sharpness0 = converter->getEdgeSharpness(converter, edge0_converter_index); - const float sharpness1 = converter->getEdgeSharpness(converter, edge1_converter_index); - // TODO(sergey): Find a better mixing between edge and vertex sharpness. - sharpness += min(sharpness0, sharpness1); - sharpness = min(sharpness, 10.0f); - } - if (sharpness != current_sharpness) { - return false; - } - } - } - return true; -} - -bool checkSingleUVLayerMatch(const OpenSubdiv::Far::TopologyLevel &base_level, - const OpenSubdiv_Converter *converter, - const int layer_index) -{ - converter->precalcUVLayer(converter, layer_index); - const int num_faces = base_level.GetNumFaces(); - // TODO(sergey): Need to check whether converter changed the winding of - // face to match OpenSubdiv's expectations. - for (int face_index = 0; face_index < num_faces; ++face_index) { - OpenSubdiv::Far::ConstIndexArray base_level_face_uvs = base_level.GetFaceFVarValues( - face_index, layer_index); - for (int corner = 0; corner < base_level_face_uvs.size(); ++corner) { - const int uv_index = converter->getFaceCornerUVIndex(converter, face_index, corner); - if (base_level_face_uvs[corner] != uv_index) { - converter->finishUVLayer(converter); - return false; - } - } - } - converter->finishUVLayer(converter); - return true; -} - -bool checkUVLayersMatch(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - using OpenSubdiv::Far::TopologyLevel; - const int num_layers = converter->getNumUVLayers(converter); - const TopologyLevel &base_level = topology_refiner->GetLevel(0); - // Number of UV layers should match. - if (base_level.GetNumFVarChannels() != num_layers) { - return false; - } - for (int layer_index = 0; layer_index < num_layers; ++layer_index) { - if (!checkSingleUVLayerMatch(base_level, converter, layer_index)) { - return false; - } - } - return true; -} - -bool checkTopologyAttributesMatch(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv_Converter *converter) -{ - return checkEdgeTagsMatch(topology_refiner, converter) && - checkvertexSharpnessMatch(topology_refiner, converter) && - checkUVLayersMatch(topology_refiner, converter); -} - -} // namespace -} // namespace opensubdiv_capi - -bool openSubdiv_topologyRefinerCompareWithConverter( - const OpenSubdiv_TopologyRefiner *topology_refiner, const OpenSubdiv_Converter *converter) -{ - const OpenSubdiv::Far::TopologyRefiner *refiner = getOSDTopologyRefiner(topology_refiner); - return (opensubdiv_capi::checkPreliminaryMatches(refiner, converter) && - opensubdiv_capi::checkGeometryMatches(refiner, converter) && - opensubdiv_capi::checkTopologyAttributesMatch(refiner, converter)); -} |