diff options
Diffstat (limited to 'thirdparty/assimp/code/PostProcessing/PretransformVertices.cpp')
| -rw-r--r-- | thirdparty/assimp/code/PostProcessing/PretransformVertices.cpp | 1174 |
1 files changed, 607 insertions, 567 deletions
diff --git a/thirdparty/assimp/code/PostProcessing/PretransformVertices.cpp b/thirdparty/assimp/code/PostProcessing/PretransformVertices.cpp index 293a5c0ea9..52001a0578 100644 --- a/thirdparty/assimp/code/PostProcessing/PretransformVertices.cpp +++ b/thirdparty/assimp/code/PostProcessing/PretransformVertices.cpp @@ -3,7 +3,7 @@ Open Asset Import Library (assimp) --------------------------------------------------------------------------- -Copyright (c) 2006-2020, assimp team +Copyright (c) 2006-2019, assimp team @@ -45,11 +45,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * @brief Implementation of the "PretransformVertices" post processing step */ + #include "PretransformVertices.h" -#include "ConvertToLHProcess.h" #include "ProcessHelper.h" -#include <assimp/Exceptional.h> #include <assimp/SceneCombiner.h> +#include <assimp/Exceptional.h> using namespace Assimp; @@ -59,630 +59,670 @@ using namespace Assimp; // ------------------------------------------------------------------------------------------------ // Constructor to be privately used by Importer -PretransformVertices::PretransformVertices() : - configKeepHierarchy(false), - configNormalize(false), - configTransform(false), - configTransformation(), - mConfigPointCloud(false) { - // empty +PretransformVertices::PretransformVertices() +: configKeepHierarchy (false) +, configNormalize(false) +, configTransform(false) +, configTransformation() +, mConfigPointCloud( false ) { + // empty } // ------------------------------------------------------------------------------------------------ // Destructor, private as well PretransformVertices::~PretransformVertices() { - // nothing to do here + // nothing to do here } // ------------------------------------------------------------------------------------------------ // Returns whether the processing step is present in the given flag field. -bool PretransformVertices::IsActive(unsigned int pFlags) const { - return (pFlags & aiProcess_PreTransformVertices) != 0; +bool PretransformVertices::IsActive( unsigned int pFlags) const +{ + return (pFlags & aiProcess_PreTransformVertices) != 0; } // ------------------------------------------------------------------------------------------------ // Setup import configuration -void PretransformVertices::SetupProperties(const Importer *pImp) { - // Get the current value of AI_CONFIG_PP_PTV_KEEP_HIERARCHY, AI_CONFIG_PP_PTV_NORMALIZE, - // AI_CONFIG_PP_PTV_ADD_ROOT_TRANSFORMATION and AI_CONFIG_PP_PTV_ROOT_TRANSFORMATION - configKeepHierarchy = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_PTV_KEEP_HIERARCHY, 0)); - configNormalize = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_PTV_NORMALIZE, 0)); - configTransform = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_PTV_ADD_ROOT_TRANSFORMATION, 0)); +void PretransformVertices::SetupProperties(const Importer* pImp) +{ + // Get the current value of AI_CONFIG_PP_PTV_KEEP_HIERARCHY, AI_CONFIG_PP_PTV_NORMALIZE, + // AI_CONFIG_PP_PTV_ADD_ROOT_TRANSFORMATION and AI_CONFIG_PP_PTV_ROOT_TRANSFORMATION + configKeepHierarchy = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_PTV_KEEP_HIERARCHY,0)); + configNormalize = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_PTV_NORMALIZE,0)); + configTransform = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_PTV_ADD_ROOT_TRANSFORMATION,0)); - configTransformation = pImp->GetPropertyMatrix(AI_CONFIG_PP_PTV_ROOT_TRANSFORMATION, aiMatrix4x4()); + configTransformation = pImp->GetPropertyMatrix(AI_CONFIG_PP_PTV_ROOT_TRANSFORMATION, aiMatrix4x4()); - mConfigPointCloud = pImp->GetPropertyBool(AI_CONFIG_EXPORT_POINT_CLOUDS); + mConfigPointCloud = pImp->GetPropertyBool(AI_CONFIG_EXPORT_POINT_CLOUDS); } // ------------------------------------------------------------------------------------------------ // Count the number of nodes -unsigned int PretransformVertices::CountNodes(const aiNode *pcNode) const { - unsigned int iRet = 1; - for (unsigned int i = 0; i < pcNode->mNumChildren; ++i) { - iRet += CountNodes(pcNode->mChildren[i]); - } - return iRet; +unsigned int PretransformVertices::CountNodes( aiNode* pcNode ) +{ + unsigned int iRet = 1; + for (unsigned int i = 0;i < pcNode->mNumChildren;++i) + { + iRet += CountNodes(pcNode->mChildren[i]); + } + return iRet; } // ------------------------------------------------------------------------------------------------ // Get a bitwise combination identifying the vertex format of a mesh -unsigned int PretransformVertices::GetMeshVFormat(aiMesh *pcMesh) const { - // the vertex format is stored in aiMesh::mBones for later retrieval. - // there isn't a good reason to compute it a few hundred times - // from scratch. The pointer is unused as animations are lost - // during PretransformVertices. - if (pcMesh->mBones) - return (unsigned int)(uint64_t)pcMesh->mBones; - - const unsigned int iRet = GetMeshVFormatUnique(pcMesh); - - // store the value for later use - pcMesh->mBones = (aiBone **)(uint64_t)iRet; - return iRet; +unsigned int PretransformVertices::GetMeshVFormat( aiMesh* pcMesh ) +{ + // the vertex format is stored in aiMesh::mBones for later retrieval. + // there isn't a good reason to compute it a few hundred times + // from scratch. The pointer is unused as animations are lost + // during PretransformVertices. + if (pcMesh->mBones) + return (unsigned int)(uint64_t)pcMesh->mBones; + + + const unsigned int iRet = GetMeshVFormatUnique(pcMesh); + + // store the value for later use + pcMesh->mBones = (aiBone**)(uint64_t)iRet; + return iRet; } // ------------------------------------------------------------------------------------------------ // Count the number of vertices in the whole scene and a given // material index -void PretransformVertices::CountVerticesAndFaces(const aiScene *pcScene, const aiNode *pcNode, unsigned int iMat, - unsigned int iVFormat, unsigned int *piFaces, unsigned int *piVertices) const { - for (unsigned int i = 0; i < pcNode->mNumMeshes; ++i) { - aiMesh *pcMesh = pcScene->mMeshes[pcNode->mMeshes[i]]; - if (iMat == pcMesh->mMaterialIndex && iVFormat == GetMeshVFormat(pcMesh)) { - *piVertices += pcMesh->mNumVertices; - *piFaces += pcMesh->mNumFaces; - } - } - for (unsigned int i = 0; i < pcNode->mNumChildren; ++i) { - CountVerticesAndFaces(pcScene, pcNode->mChildren[i], iMat, - iVFormat, piFaces, piVertices); - } +void PretransformVertices::CountVerticesAndFaces( aiScene* pcScene, aiNode* pcNode, unsigned int iMat, + unsigned int iVFormat, unsigned int* piFaces, unsigned int* piVertices) +{ + for (unsigned int i = 0; i < pcNode->mNumMeshes;++i) + { + aiMesh* pcMesh = pcScene->mMeshes[ pcNode->mMeshes[i] ]; + if (iMat == pcMesh->mMaterialIndex && iVFormat == GetMeshVFormat(pcMesh)) + { + *piVertices += pcMesh->mNumVertices; + *piFaces += pcMesh->mNumFaces; + } + } + for (unsigned int i = 0;i < pcNode->mNumChildren;++i) + { + CountVerticesAndFaces(pcScene,pcNode->mChildren[i],iMat, + iVFormat,piFaces,piVertices); + } } // ------------------------------------------------------------------------------------------------ // Collect vertex/face data -void PretransformVertices::CollectData(const aiScene *pcScene, const aiNode *pcNode, unsigned int iMat, - unsigned int iVFormat, aiMesh *pcMeshOut, - unsigned int aiCurrent[2], unsigned int *num_refs) const { - // No need to multiply if there's no transformation - const bool identity = pcNode->mTransformation.IsIdentity(); - for (unsigned int i = 0; i < pcNode->mNumMeshes; ++i) { - aiMesh *pcMesh = pcScene->mMeshes[pcNode->mMeshes[i]]; - if (iMat == pcMesh->mMaterialIndex && iVFormat == GetMeshVFormat(pcMesh)) { - // Decrement mesh reference counter - unsigned int &num_ref = num_refs[pcNode->mMeshes[i]]; - ai_assert(0 != num_ref); - --num_ref; - // Save the name of the last mesh - if (num_ref == 0) { - pcMeshOut->mName = pcMesh->mName; - } - - if (identity) { - // copy positions without modifying them - ::memcpy(pcMeshOut->mVertices + aiCurrent[AI_PTVS_VERTEX], - pcMesh->mVertices, - pcMesh->mNumVertices * sizeof(aiVector3D)); - - if (iVFormat & 0x2) { - // copy normals without modifying them - ::memcpy(pcMeshOut->mNormals + aiCurrent[AI_PTVS_VERTEX], - pcMesh->mNormals, - pcMesh->mNumVertices * sizeof(aiVector3D)); - } - if (iVFormat & 0x4) { - // copy tangents without modifying them - ::memcpy(pcMeshOut->mTangents + aiCurrent[AI_PTVS_VERTEX], - pcMesh->mTangents, - pcMesh->mNumVertices * sizeof(aiVector3D)); - // copy bitangents without modifying them - ::memcpy(pcMeshOut->mBitangents + aiCurrent[AI_PTVS_VERTEX], - pcMesh->mBitangents, - pcMesh->mNumVertices * sizeof(aiVector3D)); - } - } else { - // copy positions, transform them to worldspace - for (unsigned int n = 0; n < pcMesh->mNumVertices; ++n) { - pcMeshOut->mVertices[aiCurrent[AI_PTVS_VERTEX] + n] = pcNode->mTransformation * pcMesh->mVertices[n]; - } - aiMatrix4x4 mWorldIT = pcNode->mTransformation; - mWorldIT.Inverse().Transpose(); - - // TODO: implement Inverse() for aiMatrix3x3 - aiMatrix3x3 m = aiMatrix3x3(mWorldIT); - - if (iVFormat & 0x2) { - // copy normals, transform them to worldspace - for (unsigned int n = 0; n < pcMesh->mNumVertices; ++n) { - pcMeshOut->mNormals[aiCurrent[AI_PTVS_VERTEX] + n] = - (m * pcMesh->mNormals[n]).Normalize(); - } - } - if (iVFormat & 0x4) { - // copy tangents and bitangents, transform them to worldspace - for (unsigned int n = 0; n < pcMesh->mNumVertices; ++n) { - pcMeshOut->mTangents[aiCurrent[AI_PTVS_VERTEX] + n] = (m * pcMesh->mTangents[n]).Normalize(); - pcMeshOut->mBitangents[aiCurrent[AI_PTVS_VERTEX] + n] = (m * pcMesh->mBitangents[n]).Normalize(); - } - } - } - unsigned int p = 0; - while (iVFormat & (0x100 << p)) { - // copy texture coordinates - memcpy(pcMeshOut->mTextureCoords[p] + aiCurrent[AI_PTVS_VERTEX], - pcMesh->mTextureCoords[p], - pcMesh->mNumVertices * sizeof(aiVector3D)); - ++p; - } - p = 0; - while (iVFormat & (0x1000000 << p)) { - // copy vertex colors - memcpy(pcMeshOut->mColors[p] + aiCurrent[AI_PTVS_VERTEX], - pcMesh->mColors[p], - pcMesh->mNumVertices * sizeof(aiColor4D)); - ++p; - } - // now we need to copy all faces. since we will delete the source mesh afterwards, - // we don't need to reallocate the array of indices except if this mesh is - // referenced multiple times. - for (unsigned int planck = 0; planck < pcMesh->mNumFaces; ++planck) { - aiFace &f_src = pcMesh->mFaces[planck]; - aiFace &f_dst = pcMeshOut->mFaces[aiCurrent[AI_PTVS_FACE] + planck]; - - const unsigned int num_idx = f_src.mNumIndices; - - f_dst.mNumIndices = num_idx; - - unsigned int *pi; - if (!num_ref) { /* if last time the mesh is referenced -> no reallocation */ - pi = f_dst.mIndices = f_src.mIndices; - - // offset all vertex indices - for (unsigned int hahn = 0; hahn < num_idx; ++hahn) { - pi[hahn] += aiCurrent[AI_PTVS_VERTEX]; - } - } else { - pi = f_dst.mIndices = new unsigned int[num_idx]; - - // copy and offset all vertex indices - for (unsigned int hahn = 0; hahn < num_idx; ++hahn) { - pi[hahn] = f_src.mIndices[hahn] + aiCurrent[AI_PTVS_VERTEX]; - } - } - - // Update the mPrimitiveTypes member of the mesh - switch (pcMesh->mFaces[planck].mNumIndices) { - case 0x1: - pcMeshOut->mPrimitiveTypes |= aiPrimitiveType_POINT; - break; - case 0x2: - pcMeshOut->mPrimitiveTypes |= aiPrimitiveType_LINE; - break; - case 0x3: - pcMeshOut->mPrimitiveTypes |= aiPrimitiveType_TRIANGLE; - break; - default: - pcMeshOut->mPrimitiveTypes |= aiPrimitiveType_POLYGON; - break; - }; - } - aiCurrent[AI_PTVS_VERTEX] += pcMesh->mNumVertices; - aiCurrent[AI_PTVS_FACE] += pcMesh->mNumFaces; - } - } - - // append all children of us - for (unsigned int i = 0; i < pcNode->mNumChildren; ++i) { - CollectData(pcScene, pcNode->mChildren[i], iMat, - iVFormat, pcMeshOut, aiCurrent, num_refs); - } +void PretransformVertices::CollectData( aiScene* pcScene, aiNode* pcNode, unsigned int iMat, + unsigned int iVFormat, aiMesh* pcMeshOut, + unsigned int aiCurrent[2], unsigned int* num_refs) +{ + // No need to multiply if there's no transformation + const bool identity = pcNode->mTransformation.IsIdentity(); + for (unsigned int i = 0; i < pcNode->mNumMeshes;++i) + { + aiMesh* pcMesh = pcScene->mMeshes[ pcNode->mMeshes[i] ]; + if (iMat == pcMesh->mMaterialIndex && iVFormat == GetMeshVFormat(pcMesh)) + { + // Decrement mesh reference counter + unsigned int& num_ref = num_refs[pcNode->mMeshes[i]]; + ai_assert(0 != num_ref); + --num_ref; + // Save the name of the last mesh + if (num_ref==0) + { + pcMeshOut->mName = pcMesh->mName; + } + + if (identity) { + // copy positions without modifying them + ::memcpy(pcMeshOut->mVertices + aiCurrent[AI_PTVS_VERTEX], + pcMesh->mVertices, + pcMesh->mNumVertices * sizeof(aiVector3D)); + + if (iVFormat & 0x2) { + // copy normals without modifying them + ::memcpy(pcMeshOut->mNormals + aiCurrent[AI_PTVS_VERTEX], + pcMesh->mNormals, + pcMesh->mNumVertices * sizeof(aiVector3D)); + } + if (iVFormat & 0x4) + { + // copy tangents without modifying them + ::memcpy(pcMeshOut->mTangents + aiCurrent[AI_PTVS_VERTEX], + pcMesh->mTangents, + pcMesh->mNumVertices * sizeof(aiVector3D)); + // copy bitangents without modifying them + ::memcpy(pcMeshOut->mBitangents + aiCurrent[AI_PTVS_VERTEX], + pcMesh->mBitangents, + pcMesh->mNumVertices * sizeof(aiVector3D)); + } + } + else + { + // copy positions, transform them to worldspace + for (unsigned int n = 0; n < pcMesh->mNumVertices;++n) { + pcMeshOut->mVertices[aiCurrent[AI_PTVS_VERTEX]+n] = pcNode->mTransformation * pcMesh->mVertices[n]; + } + aiMatrix4x4 mWorldIT = pcNode->mTransformation; + mWorldIT.Inverse().Transpose(); + + // TODO: implement Inverse() for aiMatrix3x3 + aiMatrix3x3 m = aiMatrix3x3(mWorldIT); + + if (iVFormat & 0x2) + { + // copy normals, transform them to worldspace + for (unsigned int n = 0; n < pcMesh->mNumVertices;++n) { + pcMeshOut->mNormals[aiCurrent[AI_PTVS_VERTEX]+n] = + (m * pcMesh->mNormals[n]).Normalize(); + } + } + if (iVFormat & 0x4) + { + // copy tangents and bitangents, transform them to worldspace + for (unsigned int n = 0; n < pcMesh->mNumVertices;++n) { + pcMeshOut->mTangents [aiCurrent[AI_PTVS_VERTEX]+n] = (m * pcMesh->mTangents[n]).Normalize(); + pcMeshOut->mBitangents[aiCurrent[AI_PTVS_VERTEX]+n] = (m * pcMesh->mBitangents[n]).Normalize(); + } + } + } + unsigned int p = 0; + while (iVFormat & (0x100 << p)) + { + // copy texture coordinates + memcpy(pcMeshOut->mTextureCoords[p] + aiCurrent[AI_PTVS_VERTEX], + pcMesh->mTextureCoords[p], + pcMesh->mNumVertices * sizeof(aiVector3D)); + ++p; + } + p = 0; + while (iVFormat & (0x1000000 << p)) + { + // copy vertex colors + memcpy(pcMeshOut->mColors[p] + aiCurrent[AI_PTVS_VERTEX], + pcMesh->mColors[p], + pcMesh->mNumVertices * sizeof(aiColor4D)); + ++p; + } + // now we need to copy all faces. since we will delete the source mesh afterwards, + // we don't need to reallocate the array of indices except if this mesh is + // referenced multiple times. + for (unsigned int planck = 0;planck < pcMesh->mNumFaces;++planck) + { + aiFace& f_src = pcMesh->mFaces[planck]; + aiFace& f_dst = pcMeshOut->mFaces[aiCurrent[AI_PTVS_FACE]+planck]; + + const unsigned int num_idx = f_src.mNumIndices; + + f_dst.mNumIndices = num_idx; + + unsigned int* pi; + if (!num_ref) { /* if last time the mesh is referenced -> no reallocation */ + pi = f_dst.mIndices = f_src.mIndices; + + // offset all vertex indices + for (unsigned int hahn = 0; hahn < num_idx;++hahn){ + pi[hahn] += aiCurrent[AI_PTVS_VERTEX]; + } + } + else { + pi = f_dst.mIndices = new unsigned int[num_idx]; + + // copy and offset all vertex indices + for (unsigned int hahn = 0; hahn < num_idx;++hahn){ + pi[hahn] = f_src.mIndices[hahn] + aiCurrent[AI_PTVS_VERTEX]; + } + } + + // Update the mPrimitiveTypes member of the mesh + switch (pcMesh->mFaces[planck].mNumIndices) + { + case 0x1: + pcMeshOut->mPrimitiveTypes |= aiPrimitiveType_POINT; + break; + case 0x2: + pcMeshOut->mPrimitiveTypes |= aiPrimitiveType_LINE; + break; + case 0x3: + pcMeshOut->mPrimitiveTypes |= aiPrimitiveType_TRIANGLE; + break; + default: + pcMeshOut->mPrimitiveTypes |= aiPrimitiveType_POLYGON; + break; + }; + } + aiCurrent[AI_PTVS_VERTEX] += pcMesh->mNumVertices; + aiCurrent[AI_PTVS_FACE] += pcMesh->mNumFaces; + } + } + + // append all children of us + for (unsigned int i = 0;i < pcNode->mNumChildren;++i) { + CollectData(pcScene,pcNode->mChildren[i],iMat, + iVFormat,pcMeshOut,aiCurrent,num_refs); + } } // ------------------------------------------------------------------------------------------------ // Get a list of all vertex formats that occur for a given material index // The output list contains duplicate elements -void PretransformVertices::GetVFormatList(const aiScene *pcScene, unsigned int iMat, - std::list<unsigned int> &aiOut) const { - for (unsigned int i = 0; i < pcScene->mNumMeshes; ++i) { - aiMesh *pcMesh = pcScene->mMeshes[i]; - if (iMat == pcMesh->mMaterialIndex) { - aiOut.push_back(GetMeshVFormat(pcMesh)); - } - } +void PretransformVertices::GetVFormatList( aiScene* pcScene, unsigned int iMat, + std::list<unsigned int>& aiOut) +{ + for (unsigned int i = 0; i < pcScene->mNumMeshes;++i) + { + aiMesh* pcMesh = pcScene->mMeshes[ i ]; + if (iMat == pcMesh->mMaterialIndex) { + aiOut.push_back(GetMeshVFormat(pcMesh)); + } + } } // ------------------------------------------------------------------------------------------------ // Compute the absolute transformation matrices of each node -void PretransformVertices::ComputeAbsoluteTransform(aiNode *pcNode) { - if (pcNode->mParent) { - pcNode->mTransformation = pcNode->mParent->mTransformation * pcNode->mTransformation; - } - - for (unsigned int i = 0; i < pcNode->mNumChildren; ++i) { - ComputeAbsoluteTransform(pcNode->mChildren[i]); - } +void PretransformVertices::ComputeAbsoluteTransform( aiNode* pcNode ) +{ + if (pcNode->mParent) { + pcNode->mTransformation = pcNode->mParent->mTransformation*pcNode->mTransformation; + } + + for (unsigned int i = 0;i < pcNode->mNumChildren;++i) { + ComputeAbsoluteTransform(pcNode->mChildren[i]); + } } // ------------------------------------------------------------------------------------------------ // Apply the node transformation to a mesh -void PretransformVertices::ApplyTransform(aiMesh *mesh, const aiMatrix4x4 &mat) const { - // Check whether we need to transform the coordinates at all - if (!mat.IsIdentity()) { - - // Check for odd negative scale (mirror) - if (mesh->HasFaces() && mat.Determinant() < 0) { - // Reverse the mesh face winding order - FlipWindingOrderProcess::ProcessMesh(mesh); - } - - // Update positions - if (mesh->HasPositions()) { - for (unsigned int i = 0; i < mesh->mNumVertices; ++i) { - mesh->mVertices[i] = mat * mesh->mVertices[i]; - } - } - - // Update normals and tangents - if (mesh->HasNormals() || mesh->HasTangentsAndBitangents()) { - const aiMatrix3x3 m = aiMatrix3x3(mat).Inverse().Transpose(); - - if (mesh->HasNormals()) { - for (unsigned int i = 0; i < mesh->mNumVertices; ++i) { - mesh->mNormals[i] = (m * mesh->mNormals[i]).Normalize(); - } - } - if (mesh->HasTangentsAndBitangents()) { - for (unsigned int i = 0; i < mesh->mNumVertices; ++i) { - mesh->mTangents[i] = (m * mesh->mTangents[i]).Normalize(); - mesh->mBitangents[i] = (m * mesh->mBitangents[i]).Normalize(); - } - } - } - } +void PretransformVertices::ApplyTransform(aiMesh* mesh, const aiMatrix4x4& mat) +{ + // Check whether we need to transform the coordinates at all + if (!mat.IsIdentity()) { + + if (mesh->HasPositions()) { + for (unsigned int i = 0; i < mesh->mNumVertices; ++i) { + mesh->mVertices[i] = mat * mesh->mVertices[i]; + } + } + if (mesh->HasNormals() || mesh->HasTangentsAndBitangents()) { + aiMatrix4x4 mWorldIT = mat; + mWorldIT.Inverse().Transpose(); + + // TODO: implement Inverse() for aiMatrix3x3 + aiMatrix3x3 m = aiMatrix3x3(mWorldIT); + + if (mesh->HasNormals()) { + for (unsigned int i = 0; i < mesh->mNumVertices; ++i) { + mesh->mNormals[i] = (m * mesh->mNormals[i]).Normalize(); + } + } + if (mesh->HasTangentsAndBitangents()) { + for (unsigned int i = 0; i < mesh->mNumVertices; ++i) { + mesh->mTangents[i] = (m * mesh->mTangents[i]).Normalize(); + mesh->mBitangents[i] = (m * mesh->mBitangents[i]).Normalize(); + } + } + } + } } // ------------------------------------------------------------------------------------------------ // Simple routine to build meshes in worldspace, no further optimization -void PretransformVertices::BuildWCSMeshes(std::vector<aiMesh *> &out, aiMesh **in, - unsigned int numIn, aiNode *node) const { - // NOTE: - // aiMesh::mNumBones store original source mesh, or UINT_MAX if not a copy - // aiMesh::mBones store reference to abs. transform we multiplied with - - // process meshes - for (unsigned int i = 0; i < node->mNumMeshes; ++i) { - aiMesh *mesh = in[node->mMeshes[i]]; - - // check whether we can operate on this mesh - if (!mesh->mBones || *reinterpret_cast<aiMatrix4x4 *>(mesh->mBones) == node->mTransformation) { - // yes, we can. - mesh->mBones = reinterpret_cast<aiBone **>(&node->mTransformation); - mesh->mNumBones = UINT_MAX; - } else { - - // try to find us in the list of newly created meshes - for (unsigned int n = 0; n < out.size(); ++n) { - aiMesh *ctz = out[n]; - if (ctz->mNumBones == node->mMeshes[i] && *reinterpret_cast<aiMatrix4x4 *>(ctz->mBones) == node->mTransformation) { - - // ok, use this one. Update node mesh index - node->mMeshes[i] = numIn + n; - } - } - if (node->mMeshes[i] < numIn) { - // Worst case. Need to operate on a full copy of the mesh - ASSIMP_LOG_INFO("PretransformVertices: Copying mesh due to mismatching transforms"); - aiMesh *ntz; - - const unsigned int tmp = mesh->mNumBones; // - mesh->mNumBones = 0; - SceneCombiner::Copy(&ntz, mesh); - mesh->mNumBones = tmp; - - ntz->mNumBones = node->mMeshes[i]; - ntz->mBones = reinterpret_cast<aiBone **>(&node->mTransformation); - - out.push_back(ntz); - - node->mMeshes[i] = static_cast<unsigned int>(numIn + out.size() - 1); - } - } - } - - // call children - for (unsigned int i = 0; i < node->mNumChildren; ++i) - BuildWCSMeshes(out, in, numIn, node->mChildren[i]); +void PretransformVertices::BuildWCSMeshes(std::vector<aiMesh*>& out, aiMesh** in, + unsigned int numIn, aiNode* node) +{ + // NOTE: + // aiMesh::mNumBones store original source mesh, or UINT_MAX if not a copy + // aiMesh::mBones store reference to abs. transform we multiplied with + + // process meshes + for (unsigned int i = 0; i < node->mNumMeshes;++i) { + aiMesh* mesh = in[node->mMeshes[i]]; + + // check whether we can operate on this mesh + if (!mesh->mBones || *reinterpret_cast<aiMatrix4x4*>(mesh->mBones) == node->mTransformation) { + // yes, we can. + mesh->mBones = reinterpret_cast<aiBone**> (&node->mTransformation); + mesh->mNumBones = UINT_MAX; + } + else { + + // try to find us in the list of newly created meshes + for (unsigned int n = 0; n < out.size(); ++n) { + aiMesh* ctz = out[n]; + if (ctz->mNumBones == node->mMeshes[i] && *reinterpret_cast<aiMatrix4x4*>(ctz->mBones) == node->mTransformation) { + + // ok, use this one. Update node mesh index + node->mMeshes[i] = numIn + n; + } + } + if (node->mMeshes[i] < numIn) { + // Worst case. Need to operate on a full copy of the mesh + ASSIMP_LOG_INFO("PretransformVertices: Copying mesh due to mismatching transforms"); + aiMesh* ntz; + + const unsigned int tmp = mesh->mNumBones; // + mesh->mNumBones = 0; + SceneCombiner::Copy(&ntz,mesh); + mesh->mNumBones = tmp; + + ntz->mNumBones = node->mMeshes[i]; + ntz->mBones = reinterpret_cast<aiBone**> (&node->mTransformation); + + out.push_back(ntz); + + node->mMeshes[i] = static_cast<unsigned int>(numIn + out.size() - 1); + } + } + } + + // call children + for (unsigned int i = 0; i < node->mNumChildren;++i) + BuildWCSMeshes(out,in,numIn,node->mChildren[i]); } // ------------------------------------------------------------------------------------------------ // Reset transformation matrices to identity -void PretransformVertices::MakeIdentityTransform(aiNode *nd) const { - nd->mTransformation = aiMatrix4x4(); +void PretransformVertices::MakeIdentityTransform(aiNode* nd) +{ + nd->mTransformation = aiMatrix4x4(); - // call children - for (unsigned int i = 0; i < nd->mNumChildren; ++i) - MakeIdentityTransform(nd->mChildren[i]); + // call children + for (unsigned int i = 0; i < nd->mNumChildren;++i) + MakeIdentityTransform(nd->mChildren[i]); } // ------------------------------------------------------------------------------------------------ // Build reference counters for all meshes -void PretransformVertices::BuildMeshRefCountArray(const aiNode *nd, unsigned int *refs) const { - for (unsigned int i = 0; i < nd->mNumMeshes; ++i) - refs[nd->mMeshes[i]]++; - - // call children - for (unsigned int i = 0; i < nd->mNumChildren; ++i) - BuildMeshRefCountArray(nd->mChildren[i], refs); +void PretransformVertices::BuildMeshRefCountArray(aiNode* nd, unsigned int * refs) +{ + for (unsigned int i = 0; i< nd->mNumMeshes;++i) + refs[nd->mMeshes[i]]++; + + // call children + for (unsigned int i = 0; i < nd->mNumChildren;++i) + BuildMeshRefCountArray(nd->mChildren[i],refs); } // ------------------------------------------------------------------------------------------------ // Executes the post processing step on the given imported data. -void PretransformVertices::Execute(aiScene *pScene) { - ASSIMP_LOG_DEBUG("PretransformVerticesProcess begin"); - - // Return immediately if we have no meshes - if (!pScene->mNumMeshes) - return; - - const unsigned int iOldMeshes = pScene->mNumMeshes; - const unsigned int iOldAnimationChannels = pScene->mNumAnimations; - const unsigned int iOldNodes = CountNodes(pScene->mRootNode); - - if (configTransform) { - pScene->mRootNode->mTransformation = configTransformation; - } - - // first compute absolute transformation matrices for all nodes - ComputeAbsoluteTransform(pScene->mRootNode); - - // Delete aiMesh::mBones for all meshes. The bones are - // removed during this step and we need the pointer as - // temporary storage - for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) { - aiMesh *mesh = pScene->mMeshes[i]; - - for (unsigned int a = 0; a < mesh->mNumBones; ++a) - delete mesh->mBones[a]; - - delete[] mesh->mBones; - mesh->mBones = NULL; - } - - // now build a list of output meshes - std::vector<aiMesh *> apcOutMeshes; - - // Keep scene hierarchy? It's an easy job in this case ... - // we go on and transform all meshes, if one is referenced by nodes - // with different absolute transformations a depth copy of the mesh - // is required. - if (configKeepHierarchy) { - - // Hack: store the matrix we're transforming a mesh with in aiMesh::mBones - BuildWCSMeshes(apcOutMeshes, pScene->mMeshes, pScene->mNumMeshes, pScene->mRootNode); - - // ... if new meshes have been generated, append them to the end of the scene - if (apcOutMeshes.size() > 0) { - aiMesh **npp = new aiMesh *[pScene->mNumMeshes + apcOutMeshes.size()]; - - memcpy(npp, pScene->mMeshes, sizeof(aiMesh *) * pScene->mNumMeshes); - memcpy(npp + pScene->mNumMeshes, &apcOutMeshes[0], sizeof(aiMesh *) * apcOutMeshes.size()); - - pScene->mNumMeshes += static_cast<unsigned int>(apcOutMeshes.size()); - delete[] pScene->mMeshes; - pScene->mMeshes = npp; - } - - // now iterate through all meshes and transform them to worldspace - for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) { - ApplyTransform(pScene->mMeshes[i], *reinterpret_cast<aiMatrix4x4 *>(pScene->mMeshes[i]->mBones)); - - // prevent improper destruction - pScene->mMeshes[i]->mBones = NULL; - pScene->mMeshes[i]->mNumBones = 0; - } - } else { - apcOutMeshes.reserve(pScene->mNumMaterials << 1u); - std::list<unsigned int> aiVFormats; - - std::vector<unsigned int> s(pScene->mNumMeshes, 0); - BuildMeshRefCountArray(pScene->mRootNode, &s[0]); - - for (unsigned int i = 0; i < pScene->mNumMaterials; ++i) { - // get the list of all vertex formats for this material - aiVFormats.clear(); - GetVFormatList(pScene, i, aiVFormats); - aiVFormats.sort(); - aiVFormats.unique(); - for (std::list<unsigned int>::const_iterator j = aiVFormats.begin(); j != aiVFormats.end(); ++j) { - unsigned int iVertices = 0; - unsigned int iFaces = 0; - CountVerticesAndFaces(pScene, pScene->mRootNode, i, *j, &iFaces, &iVertices); - if (0 != iFaces && 0 != iVertices) { - apcOutMeshes.push_back(new aiMesh()); - aiMesh *pcMesh = apcOutMeshes.back(); - pcMesh->mNumFaces = iFaces; - pcMesh->mNumVertices = iVertices; - pcMesh->mFaces = new aiFace[iFaces]; - pcMesh->mVertices = new aiVector3D[iVertices]; - pcMesh->mMaterialIndex = i; - if ((*j) & 0x2) pcMesh->mNormals = new aiVector3D[iVertices]; - if ((*j) & 0x4) { - pcMesh->mTangents = new aiVector3D[iVertices]; - pcMesh->mBitangents = new aiVector3D[iVertices]; - } - iFaces = 0; - while ((*j) & (0x100 << iFaces)) { - pcMesh->mTextureCoords[iFaces] = new aiVector3D[iVertices]; - if ((*j) & (0x10000 << iFaces)) - pcMesh->mNumUVComponents[iFaces] = 3; - else - pcMesh->mNumUVComponents[iFaces] = 2; - iFaces++; - } - iFaces = 0; - while ((*j) & (0x1000000 << iFaces)) - pcMesh->mColors[iFaces++] = new aiColor4D[iVertices]; - - // fill the mesh ... - unsigned int aiTemp[2] = { 0, 0 }; - CollectData(pScene, pScene->mRootNode, i, *j, pcMesh, aiTemp, &s[0]); - } - } - } - - // If no meshes are referenced in the node graph it is possible that we get no output meshes. - if (apcOutMeshes.empty()) { - - throw DeadlyImportError("No output meshes: all meshes are orphaned and are not referenced by any nodes"); - } else { - // now delete all meshes in the scene and build a new mesh list - for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) { - aiMesh *mesh = pScene->mMeshes[i]; - mesh->mNumBones = 0; - mesh->mBones = NULL; - - // we're reusing the face index arrays. avoid destruction - for (unsigned int a = 0; a < mesh->mNumFaces; ++a) { - mesh->mFaces[a].mNumIndices = 0; - mesh->mFaces[a].mIndices = NULL; - } - - delete mesh; - - // Invalidate the contents of the old mesh array. We will most - // likely have less output meshes now, so the last entries of - // the mesh array are not overridden. We set them to NULL to - // make sure the developer gets notified when his application - // attempts to access these fields ... - mesh = NULL; - } - - // It is impossible that we have more output meshes than - // input meshes, so we can easily reuse the old mesh array - pScene->mNumMeshes = (unsigned int)apcOutMeshes.size(); - for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) { - pScene->mMeshes[i] = apcOutMeshes[i]; - } - } - } - - // remove all animations from the scene - for (unsigned int i = 0; i < pScene->mNumAnimations; ++i) - delete pScene->mAnimations[i]; - delete[] pScene->mAnimations; - - pScene->mAnimations = NULL; - pScene->mNumAnimations = 0; - - // --- we need to keep all cameras and lights - for (unsigned int i = 0; i < pScene->mNumCameras; ++i) { - aiCamera *cam = pScene->mCameras[i]; - const aiNode *nd = pScene->mRootNode->FindNode(cam->mName); - ai_assert(NULL != nd); - - // multiply all properties of the camera with the absolute - // transformation of the corresponding node - cam->mPosition = nd->mTransformation * cam->mPosition; - cam->mLookAt = aiMatrix3x3(nd->mTransformation) * cam->mLookAt; - cam->mUp = aiMatrix3x3(nd->mTransformation) * cam->mUp; - } - - for (unsigned int i = 0; i < pScene->mNumLights; ++i) { - aiLight *l = pScene->mLights[i]; - const aiNode *nd = pScene->mRootNode->FindNode(l->mName); - ai_assert(NULL != nd); - - // multiply all properties of the camera with the absolute - // transformation of the corresponding node - l->mPosition = nd->mTransformation * l->mPosition; - l->mDirection = aiMatrix3x3(nd->mTransformation) * l->mDirection; - l->mUp = aiMatrix3x3(nd->mTransformation) * l->mUp; - } - - if (!configKeepHierarchy) { - - // now delete all nodes in the scene and build a new - // flat node graph with a root node and some level 1 children - aiNode *newRoot = new aiNode(); - newRoot->mName = pScene->mRootNode->mName; - delete pScene->mRootNode; - pScene->mRootNode = newRoot; - - if (1 == pScene->mNumMeshes && !pScene->mNumLights && !pScene->mNumCameras) { - pScene->mRootNode->mNumMeshes = 1; - pScene->mRootNode->mMeshes = new unsigned int[1]; - pScene->mRootNode->mMeshes[0] = 0; - } else { - pScene->mRootNode->mNumChildren = pScene->mNumMeshes + pScene->mNumLights + pScene->mNumCameras; - aiNode **nodes = pScene->mRootNode->mChildren = new aiNode *[pScene->mRootNode->mNumChildren]; - - // generate mesh nodes - for (unsigned int i = 0; i < pScene->mNumMeshes; ++i, ++nodes) { - aiNode *pcNode = new aiNode(); - *nodes = pcNode; - pcNode->mParent = pScene->mRootNode; - pcNode->mName = pScene->mMeshes[i]->mName; - - // setup mesh indices - pcNode->mNumMeshes = 1; - pcNode->mMeshes = new unsigned int[1]; - pcNode->mMeshes[0] = i; - } - // generate light nodes - for (unsigned int i = 0; i < pScene->mNumLights; ++i, ++nodes) { - aiNode *pcNode = new aiNode(); - *nodes = pcNode; - pcNode->mParent = pScene->mRootNode; - pcNode->mName.length = ai_snprintf(pcNode->mName.data, MAXLEN, "light_%u", i); - pScene->mLights[i]->mName = pcNode->mName; - } - // generate camera nodes - for (unsigned int i = 0; i < pScene->mNumCameras; ++i, ++nodes) { - aiNode *pcNode = new aiNode(); - *nodes = pcNode; - pcNode->mParent = pScene->mRootNode; - pcNode->mName.length = ::ai_snprintf(pcNode->mName.data, MAXLEN, "cam_%u", i); - pScene->mCameras[i]->mName = pcNode->mName; - } - } - } else { - // ... and finally set the transformation matrix of all nodes to identity - MakeIdentityTransform(pScene->mRootNode); - } - - if (configNormalize) { - // compute the boundary of all meshes - aiVector3D min, max; - MinMaxChooser<aiVector3D>()(min, max); - - for (unsigned int a = 0; a < pScene->mNumMeshes; ++a) { - aiMesh *m = pScene->mMeshes[a]; - for (unsigned int i = 0; i < m->mNumVertices; ++i) { - min = std::min(m->mVertices[i], min); - max = std::max(m->mVertices[i], max); - } - } - - // find the dominant axis - aiVector3D d = max - min; - const ai_real div = std::max(d.x, std::max(d.y, d.z)) * ai_real(0.5); - - d = min + d * (ai_real)0.5; - for (unsigned int a = 0; a < pScene->mNumMeshes; ++a) { - aiMesh *m = pScene->mMeshes[a]; - for (unsigned int i = 0; i < m->mNumVertices; ++i) { - m->mVertices[i] = (m->mVertices[i] - d) / div; - } - } - } - - // print statistics - if (!DefaultLogger::isNullLogger()) { - ASSIMP_LOG_DEBUG("PretransformVerticesProcess finished"); - - ASSIMP_LOG_INFO_F("Removed ", iOldNodes, " nodes and ", iOldAnimationChannels, " animation channels (", - CountNodes(pScene->mRootNode), " output nodes)"); - ASSIMP_LOG_INFO_F("Kept ", pScene->mNumLights, " lights and ", pScene->mNumCameras, " cameras."); - ASSIMP_LOG_INFO_F("Moved ", iOldMeshes, " meshes to WCS (number of output meshes: ", pScene->mNumMeshes, ")"); - } +void PretransformVertices::Execute( aiScene* pScene) +{ + ASSIMP_LOG_DEBUG("PretransformVerticesProcess begin"); + + // Return immediately if we have no meshes + if (!pScene->mNumMeshes) + return; + + const unsigned int iOldMeshes = pScene->mNumMeshes; + const unsigned int iOldAnimationChannels = pScene->mNumAnimations; + const unsigned int iOldNodes = CountNodes(pScene->mRootNode); + + if(configTransform) { + pScene->mRootNode->mTransformation = configTransformation; + } + + // first compute absolute transformation matrices for all nodes + ComputeAbsoluteTransform(pScene->mRootNode); + + // Delete aiMesh::mBones for all meshes. The bones are + // removed during this step and we need the pointer as + // temporary storage + for (unsigned int i = 0; i < pScene->mNumMeshes;++i) { + aiMesh* mesh = pScene->mMeshes[i]; + + for (unsigned int a = 0; a < mesh->mNumBones;++a) + delete mesh->mBones[a]; + + delete[] mesh->mBones; + mesh->mBones = NULL; + } + + // now build a list of output meshes + std::vector<aiMesh*> apcOutMeshes; + + // Keep scene hierarchy? It's an easy job in this case ... + // we go on and transform all meshes, if one is referenced by nodes + // with different absolute transformations a depth copy of the mesh + // is required. + if( configKeepHierarchy ) { + + // Hack: store the matrix we're transforming a mesh with in aiMesh::mBones + BuildWCSMeshes(apcOutMeshes,pScene->mMeshes,pScene->mNumMeshes, pScene->mRootNode); + + // ... if new meshes have been generated, append them to the end of the scene + if (apcOutMeshes.size() > 0) { + aiMesh** npp = new aiMesh*[pScene->mNumMeshes + apcOutMeshes.size()]; + + memcpy(npp,pScene->mMeshes,sizeof(aiMesh*)*pScene->mNumMeshes); + memcpy(npp+pScene->mNumMeshes,&apcOutMeshes[0],sizeof(aiMesh*)*apcOutMeshes.size()); + + pScene->mNumMeshes += static_cast<unsigned int>(apcOutMeshes.size()); + delete[] pScene->mMeshes; pScene->mMeshes = npp; + } + + // now iterate through all meshes and transform them to worldspace + for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) { + ApplyTransform(pScene->mMeshes[i],*reinterpret_cast<aiMatrix4x4*>( pScene->mMeshes[i]->mBones )); + + // prevent improper destruction + pScene->mMeshes[i]->mBones = NULL; + pScene->mMeshes[i]->mNumBones = 0; + } + } else { + apcOutMeshes.reserve(pScene->mNumMaterials<<1u); + std::list<unsigned int> aiVFormats; + + std::vector<unsigned int> s(pScene->mNumMeshes,0); + BuildMeshRefCountArray(pScene->mRootNode,&s[0]); + + for (unsigned int i = 0; i < pScene->mNumMaterials;++i) { + // get the list of all vertex formats for this material + aiVFormats.clear(); + GetVFormatList(pScene,i,aiVFormats); + aiVFormats.sort(); + aiVFormats.unique(); + for (std::list<unsigned int>::const_iterator j = aiVFormats.begin();j != aiVFormats.end();++j) { + unsigned int iVertices = 0; + unsigned int iFaces = 0; + CountVerticesAndFaces(pScene,pScene->mRootNode,i,*j,&iFaces,&iVertices); + if (0 != iFaces && 0 != iVertices) + { + apcOutMeshes.push_back(new aiMesh()); + aiMesh* pcMesh = apcOutMeshes.back(); + pcMesh->mNumFaces = iFaces; + pcMesh->mNumVertices = iVertices; + pcMesh->mFaces = new aiFace[iFaces]; + pcMesh->mVertices = new aiVector3D[iVertices]; + pcMesh->mMaterialIndex = i; + if ((*j) & 0x2)pcMesh->mNormals = new aiVector3D[iVertices]; + if ((*j) & 0x4) + { + pcMesh->mTangents = new aiVector3D[iVertices]; + pcMesh->mBitangents = new aiVector3D[iVertices]; + } + iFaces = 0; + while ((*j) & (0x100 << iFaces)) + { + pcMesh->mTextureCoords[iFaces] = new aiVector3D[iVertices]; + if ((*j) & (0x10000 << iFaces))pcMesh->mNumUVComponents[iFaces] = 3; + else pcMesh->mNumUVComponents[iFaces] = 2; + iFaces++; + } + iFaces = 0; + while ((*j) & (0x1000000 << iFaces)) + pcMesh->mColors[iFaces++] = new aiColor4D[iVertices]; + + // fill the mesh ... + unsigned int aiTemp[2] = {0,0}; + CollectData(pScene,pScene->mRootNode,i,*j,pcMesh,aiTemp,&s[0]); + } + } + } + + // If no meshes are referenced in the node graph it is possible that we get no output meshes. + if (apcOutMeshes.empty()) { + + throw DeadlyImportError("No output meshes: all meshes are orphaned and are not referenced by any nodes"); + } + else + { + // now delete all meshes in the scene and build a new mesh list + for (unsigned int i = 0; i < pScene->mNumMeshes;++i) + { + aiMesh* mesh = pScene->mMeshes[i]; + mesh->mNumBones = 0; + mesh->mBones = NULL; + + // we're reusing the face index arrays. avoid destruction + for (unsigned int a = 0; a < mesh->mNumFaces; ++a) { + mesh->mFaces[a].mNumIndices = 0; + mesh->mFaces[a].mIndices = NULL; + } + + delete mesh; + + // Invalidate the contents of the old mesh array. We will most + // likely have less output meshes now, so the last entries of + // the mesh array are not overridden. We set them to NULL to + // make sure the developer gets notified when his application + // attempts to access these fields ... + mesh = NULL; + } + + // It is impossible that we have more output meshes than + // input meshes, so we can easily reuse the old mesh array + pScene->mNumMeshes = (unsigned int)apcOutMeshes.size(); + for (unsigned int i = 0; i < pScene->mNumMeshes;++i) { + pScene->mMeshes[i] = apcOutMeshes[i]; + } + } + } + + // remove all animations from the scene + for (unsigned int i = 0; i < pScene->mNumAnimations;++i) + delete pScene->mAnimations[i]; + delete[] pScene->mAnimations; + + pScene->mAnimations = NULL; + pScene->mNumAnimations = 0; + + // --- we need to keep all cameras and lights + for (unsigned int i = 0; i < pScene->mNumCameras;++i) + { + aiCamera* cam = pScene->mCameras[i]; + const aiNode* nd = pScene->mRootNode->FindNode(cam->mName); + ai_assert(NULL != nd); + + // multiply all properties of the camera with the absolute + // transformation of the corresponding node + cam->mPosition = nd->mTransformation * cam->mPosition; + cam->mLookAt = aiMatrix3x3( nd->mTransformation ) * cam->mLookAt; + cam->mUp = aiMatrix3x3( nd->mTransformation ) * cam->mUp; + } + + for (unsigned int i = 0; i < pScene->mNumLights;++i) + { + aiLight* l = pScene->mLights[i]; + const aiNode* nd = pScene->mRootNode->FindNode(l->mName); + ai_assert(NULL != nd); + + // multiply all properties of the camera with the absolute + // transformation of the corresponding node + l->mPosition = nd->mTransformation * l->mPosition; + l->mDirection = aiMatrix3x3( nd->mTransformation ) * l->mDirection; + l->mUp = aiMatrix3x3( nd->mTransformation ) * l->mUp; + } + + if( !configKeepHierarchy ) { + + // now delete all nodes in the scene and build a new + // flat node graph with a root node and some level 1 children + aiNode* newRoot = new aiNode(); + newRoot->mName = pScene->mRootNode->mName; + delete pScene->mRootNode; + pScene->mRootNode = newRoot; + + if (1 == pScene->mNumMeshes && !pScene->mNumLights && !pScene->mNumCameras) + { + pScene->mRootNode->mNumMeshes = 1; + pScene->mRootNode->mMeshes = new unsigned int[1]; + pScene->mRootNode->mMeshes[0] = 0; + } + else + { + pScene->mRootNode->mNumChildren = pScene->mNumMeshes+pScene->mNumLights+pScene->mNumCameras; + aiNode** nodes = pScene->mRootNode->mChildren = new aiNode*[pScene->mRootNode->mNumChildren]; + + // generate mesh nodes + for (unsigned int i = 0; i < pScene->mNumMeshes;++i,++nodes) + { + aiNode* pcNode = new aiNode(); + *nodes = pcNode; + pcNode->mParent = pScene->mRootNode; + pcNode->mName = pScene->mMeshes[i]->mName; + + // setup mesh indices + pcNode->mNumMeshes = 1; + pcNode->mMeshes = new unsigned int[1]; + pcNode->mMeshes[0] = i; + } + // generate light nodes + for (unsigned int i = 0; i < pScene->mNumLights;++i,++nodes) + { + aiNode* pcNode = new aiNode(); + *nodes = pcNode; + pcNode->mParent = pScene->mRootNode; + pcNode->mName.length = ai_snprintf(pcNode->mName.data, MAXLEN, "light_%u",i); + pScene->mLights[i]->mName = pcNode->mName; + } + // generate camera nodes + for (unsigned int i = 0; i < pScene->mNumCameras;++i,++nodes) + { + aiNode* pcNode = new aiNode(); + *nodes = pcNode; + pcNode->mParent = pScene->mRootNode; + pcNode->mName.length = ::ai_snprintf(pcNode->mName.data,MAXLEN,"cam_%u",i); + pScene->mCameras[i]->mName = pcNode->mName; + } + } + } + else { + // ... and finally set the transformation matrix of all nodes to identity + MakeIdentityTransform(pScene->mRootNode); + } + + if (configNormalize) { + // compute the boundary of all meshes + aiVector3D min,max; + MinMaxChooser<aiVector3D> ()(min,max); + + for (unsigned int a = 0; a < pScene->mNumMeshes; ++a) { + aiMesh* m = pScene->mMeshes[a]; + for (unsigned int i = 0; i < m->mNumVertices;++i) { + min = std::min(m->mVertices[i],min); + max = std::max(m->mVertices[i],max); + } + } + + // find the dominant axis + aiVector3D d = max-min; + const ai_real div = std::max(d.x,std::max(d.y,d.z))*ai_real( 0.5); + + d = min + d * (ai_real)0.5; + for (unsigned int a = 0; a < pScene->mNumMeshes; ++a) { + aiMesh* m = pScene->mMeshes[a]; + for (unsigned int i = 0; i < m->mNumVertices;++i) { + m->mVertices[i] = (m->mVertices[i]-d)/div; + } + } + } + + // print statistics + if (!DefaultLogger::isNullLogger()) { + ASSIMP_LOG_DEBUG("PretransformVerticesProcess finished"); + + ASSIMP_LOG_INFO_F("Removed ", iOldNodes, " nodes and ", iOldAnimationChannels, " animation channels (", + CountNodes(pScene->mRootNode) ," output nodes)" ); + ASSIMP_LOG_INFO_F("Kept ", pScene->mNumLights, " lights and ", pScene->mNumCameras, " cameras." ); + ASSIMP_LOG_INFO_F("Moved ", iOldMeshes, " meshes to WCS (number of output meshes: ", pScene->mNumMeshes, ")"); + } } |