Odd Negative Scale: PretransformVertices
PretransformVertices postprocessing now reverses face order when transform is mirroring. Fixes flip to backfacing in models that mirrored some nodes. (Odd count of negative scale components, negative determinant)
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RichardTea
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@@ -59,7 +59,7 @@ struct aiNode;
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class PretransformVerticesTest;
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namespace Assimp {
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namespace Assimp {
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// ---------------------------------------------------------------------------
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/** The PretransformVertices pre-transforms all vertices in the node tree
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@@ -68,97 +68,97 @@ namespace Assimp {
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*/
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class ASSIMP_API PretransformVertices : public BaseProcess {
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public:
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PretransformVertices ();
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~PretransformVertices ();
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PretransformVertices();
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~PretransformVertices();
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// -------------------------------------------------------------------
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// Check whether step is active
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bool IsActive( unsigned int pFlags) const;
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// -------------------------------------------------------------------
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// Check whether step is active
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bool IsActive(unsigned int pFlags) const override;
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// -------------------------------------------------------------------
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// Execute step on a given scene
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void Execute( aiScene* pScene);
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// -------------------------------------------------------------------
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// Execute step on a given scene
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void Execute(aiScene *pScene) override;
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// -------------------------------------------------------------------
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// Setup import settings
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void SetupProperties(const Importer* pImp);
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// -------------------------------------------------------------------
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// Setup import settings
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void SetupProperties(const Importer *pImp) override;
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// -------------------------------------------------------------------
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/** @brief Toggle the 'keep hierarchy' option
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// -------------------------------------------------------------------
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/** @brief Toggle the 'keep hierarchy' option
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* @param keep true for keep configuration.
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*/
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void KeepHierarchy(bool keep) {
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configKeepHierarchy = keep;
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}
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void KeepHierarchy(bool keep) {
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configKeepHierarchy = keep;
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}
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// -------------------------------------------------------------------
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/** @brief Check whether 'keep hierarchy' is currently enabled.
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// -------------------------------------------------------------------
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/** @brief Check whether 'keep hierarchy' is currently enabled.
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* @return ...
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*/
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bool IsHierarchyKept() const {
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return configKeepHierarchy;
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}
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bool IsHierarchyKept() const {
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return configKeepHierarchy;
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}
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private:
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// -------------------------------------------------------------------
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// Count the number of nodes
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unsigned int CountNodes( aiNode* pcNode );
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// -------------------------------------------------------------------
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// Count the number of nodes
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unsigned int CountNodes(const aiNode *pcNode) const;
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// -------------------------------------------------------------------
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// Get a bitwise combination identifying the vertex format of a mesh
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unsigned int GetMeshVFormat(aiMesh* pcMesh);
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// -------------------------------------------------------------------
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// Get a bitwise combination identifying the vertex format of a mesh
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unsigned int GetMeshVFormat(aiMesh *pcMesh) const;
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// -------------------------------------------------------------------
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// Count the number of vertices in the whole scene and a given
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// material index
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void CountVerticesAndFaces( aiScene* pcScene, aiNode* pcNode,
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unsigned int iMat,
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unsigned int iVFormat,
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unsigned int* piFaces,
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unsigned int* piVertices);
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// -------------------------------------------------------------------
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// Count the number of vertices in the whole scene and a given
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// material index
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void CountVerticesAndFaces(const aiScene *pcScene, const aiNode *pcNode,
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unsigned int iMat,
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unsigned int iVFormat,
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unsigned int *piFaces,
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unsigned int *piVertices) const;
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// -------------------------------------------------------------------
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// Collect vertex/face data
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void CollectData( aiScene* pcScene, aiNode* pcNode,
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unsigned int iMat,
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unsigned int iVFormat,
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aiMesh* pcMeshOut,
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unsigned int aiCurrent[2],
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unsigned int* num_refs);
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// -------------------------------------------------------------------
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// Collect vertex/face data
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void CollectData(const aiScene *pcScene, const aiNode *pcNode,
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unsigned int iMat,
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unsigned int iVFormat,
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aiMesh *pcMeshOut,
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unsigned int aiCurrent[2],
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unsigned int *num_refs) const;
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// -------------------------------------------------------------------
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// Get a list of all vertex formats that occur for a given material
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// The output list contains duplicate elements
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void GetVFormatList( aiScene* pcScene, unsigned int iMat,
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std::list<unsigned int>& aiOut);
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// -------------------------------------------------------------------
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// Get a list of all vertex formats that occur for a given material
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// The output list contains duplicate elements
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void GetVFormatList(const aiScene *pcScene, unsigned int iMat,
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std::list<unsigned int> &aiOut) const;
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// -------------------------------------------------------------------
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// Compute the absolute transformation matrices of each node
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void ComputeAbsoluteTransform( aiNode* pcNode );
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// -------------------------------------------------------------------
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// Compute the absolute transformation matrices of each node
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void ComputeAbsoluteTransform(aiNode *pcNode);
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// -------------------------------------------------------------------
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// Simple routine to build meshes in worldspace, no further optimization
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void BuildWCSMeshes(std::vector<aiMesh*>& out, aiMesh** in,
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unsigned int numIn, aiNode* node);
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// -------------------------------------------------------------------
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// Simple routine to build meshes in worldspace, no further optimization
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void BuildWCSMeshes(std::vector<aiMesh *> &out, aiMesh **in,
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unsigned int numIn, aiNode *node) const;
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// -------------------------------------------------------------------
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// Apply the node transformation to a mesh
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void ApplyTransform(aiMesh* mesh, const aiMatrix4x4& mat);
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// -------------------------------------------------------------------
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// Apply the node transformation to a mesh
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void ApplyTransform(aiMesh *mesh, const aiMatrix4x4 &mat) const;
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// -------------------------------------------------------------------
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// Reset transformation matrices to identity
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void MakeIdentityTransform(aiNode* nd);
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// -------------------------------------------------------------------
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// Reset transformation matrices to identity
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void MakeIdentityTransform(aiNode *nd) const;
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// -------------------------------------------------------------------
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// Build reference counters for all meshes
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void BuildMeshRefCountArray(aiNode* nd, unsigned int * refs);
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// -------------------------------------------------------------------
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// Build reference counters for all meshes
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void BuildMeshRefCountArray(const aiNode *nd, unsigned int *refs) const;
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//! Configuration option: keep scene hierarchy as long as possible
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bool configKeepHierarchy;
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bool configNormalize;
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bool configTransform;
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aiMatrix4x4 configTransformation;
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bool mConfigPointCloud;
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//! Configuration option: keep scene hierarchy as long as possible
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bool configKeepHierarchy;
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bool configNormalize;
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bool configTransform;
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aiMatrix4x4 configTransformation;
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bool mConfigPointCloud;
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};
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} // end of namespace Assimp
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