Merge branch 'master' into trim-whitespace

CMakeLists.txt

@@ -1,6 +1,6 @@
 # Open Asset Import Library (assimp)
 # ----------------------------------------------------------------------
-# Copyright (c) 2006-2022, assimp team
+# Copyright (c) 2006-2023, assimp team
 #
 # All rights reserved.
 #
@@ -277,13 +277,15 @@ ELSEIF(MSVC)
   ELSE() # msvc
     ADD_COMPILE_OPTIONS(/MP /bigobj /W4 /WX)
   ENDIF()
+  
   # disable "elements of array '' will be default initialized" warning on MSVC2013
   IF(MSVC12)
     ADD_COMPILE_OPTIONS(/wd4351)	
   ENDIF()
-  ADD_COMPILE_OPTIONS(/wd4244) #supress warning for double to float conversion if Double precission is activated
+  # supress warning for double to float conversion if Double precission is activated
+  ADD_COMPILE_OPTIONS(/wd4244) 
   SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /D_DEBUG /Zi /Od")
-  SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Zi")
+  SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
   SET(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} /DEBUG:FULL /PDBALTPATH:%_PDB% /OPT:REF /OPT:ICF")
 ELSEIF (CMAKE_CXX_COMPILER_ID MATCHES "Clang" )
   IF(NOT ASSIMP_HUNTER_ENABLED)

code/AssetLib/Collada/ColladaParser.cpp

@@ -762,6 +762,7 @@ void ColladaParser::ReadControllerWeights(XmlNode &node, Collada::Controller &pC
                 if (text == nullptr) {
                     throw DeadlyImportError("Out of data while reading <vertex_weights>");
                 }
+                SkipSpacesAndLineEnd(&text);
                 it->first = strtoul10(text, &text);
                 SkipSpacesAndLineEnd(&text);
                 if (*text == 0) {

code/AssetLib/M3D/M3DWrapper.cpp

@@ -39,8 +39,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ----------------------------------------------------------------------
 */
-#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
+#if !defined ASSIMP_BUILD_NO_M3D_IMPORTER || !(defined ASSIMP_BUILD_NO_EXPORT || defined ASSIMP_BUILD_NO_M3D_EXPORTER)
-#if !(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER)
 
 #include "M3DWrapper.h"
 
@@ -149,4 +148,3 @@ void M3DWrapper::ClearSave() {
 } // namespace Assimp
 
 #endif
-#endif

code/AssetLib/M3D/M3DWrapper.h

@@ -47,8 +47,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef AI_M3DWRAPPER_H_INC
 #define AI_M3DWRAPPER_H_INC
 
-#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
+#if !defined ASSIMP_BUILD_NO_M3D_IMPORTER || !(defined ASSIMP_BUILD_NO_EXPORT || defined ASSIMP_BUILD_NO_M3D_EXPORTER)
-#if !(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER)  
 
 #include <memory>
 #include <vector>
@@ -126,7 +125,6 @@ inline m3d_t *M3DWrapper::M3D() const {
 
 } // namespace Assimp
 
-#endif
 #endif // ASSIMP_BUILD_NO_M3D_IMPORTER
 
 #endif // AI_M3DWRAPPER_H_INC

code/PostProcessing/JoinVerticesProcess.cpp

@@ -105,7 +105,11 @@ void JoinVerticesProcess::Execute( aiScene* pScene) {
 
 namespace {
 
-bool areVerticesEqual(const Vertex &lhs, const Vertex &rhs, bool complex) {
+bool areVerticesEqual(
+    const Vertex &lhs,
+    const Vertex &rhs,
+    unsigned numUVChannels,
+    unsigned numColorChannels) {
     // A little helper to find locally close vertices faster.
     // Try to reuse the lookup table from the last step.
     const static float epsilon = 1e-5f;
@@ -124,10 +128,6 @@ bool areVerticesEqual(const Vertex &lhs, const Vertex &rhs, bool complex) {
         return false;
     }
 
-    if ((lhs.texcoords[0] - rhs.texcoords[0]).SquareLength() > squareEpsilon) {
-        return false;
-    }
-
     if ((lhs.tangent - rhs.tangent).SquareLength() > squareEpsilon) {
         return false;
     }
@@ -136,19 +136,18 @@ bool areVerticesEqual(const Vertex &lhs, const Vertex &rhs, bool complex) {
         return false;
     }
 
-    // Usually we won't have vertex colors or multiple UVs, so we can skip from here
+    for (unsigned i = 0; i < numUVChannels; i++) {
-    // Actually this increases runtime performance slightly, at least if branch
+        if ((lhs.texcoords[i] - rhs.texcoords[i]).SquareLength() > squareEpsilon) {
-    // prediction is on our side.
-    if (complex) {
-        for (int i = 0; i < 8; i++) {
-            if (i > 0 && (lhs.texcoords[i] - rhs.texcoords[i]).SquareLength() > squareEpsilon) {
             return false;
         }
+    }
+
+    for (unsigned i = 0; i < numColorChannels; i++) {
         if (GetColorDifference(lhs.colors[i], rhs.colors[i]) > squareEpsilon) {
             return false;
         }
     }
-    }
+
     return true;
 }
 
@@ -241,9 +240,16 @@ struct std::hash<Vertex> {
 //template specialization for std::equal_to for Vertex
 template<>
 struct std::equal_to<Vertex> {
+    equal_to(unsigned numUVChannels, unsigned numColorChannels) :
+            mNumUVChannels(numUVChannels),
+            mNumColorChannels(numColorChannels) {}
     bool operator()(const Vertex &lhs, const Vertex &rhs) const {
-        return areVerticesEqual(lhs, rhs, false);
+        return areVerticesEqual(lhs, rhs, mNumUVChannels, mNumColorChannels);
     }
+
+private:
+    unsigned mNumUVChannels;
+    unsigned mNumColorChannels;
 };
 // now start the JoinVerticesProcess
 int JoinVerticesProcess::ProcessMesh( aiMesh* pMesh, unsigned int meshIndex) {
@@ -316,8 +322,13 @@ int JoinVerticesProcess::ProcessMesh( aiMesh* pMesh, unsigned int meshIndex) {
             uniqueAnimatedVertices[animMeshIndex].reserve(pMesh->mNumVertices);
         }
     }
-    // a map that maps a vertix to its new index
+    // a map that maps a vertex to its new index
-    std::unordered_map<Vertex,int> vertex2Index;
+    const auto numBuckets = pMesh->mNumVertices;
+    const auto hasher = std::hash<Vertex>();
+    const auto comparator = std::equal_to<Vertex>(
+            pMesh->GetNumUVChannels(),
+            pMesh->GetNumColorChannels());
+    std::unordered_map<Vertex, int> vertex2Index(numBuckets, hasher, comparator);
     // we can not end up with more vertices than we started with
     vertex2Index.reserve(pMesh->mNumVertices);
     // Now check each vertex if it brings something new to the table

code/PostProcessing/LimitBoneWeightsProcess.cpp

@@ -2,8 +2,7 @@
 Open Asset Import Library (assimp)
 ----------------------------------------------------------------------
 
-Copyright (c) 2006-2022, assimp team
+Copyright (c) 2006-2023, assimp team
-
 
 All rights reserved.
 
@@ -36,13 +35,7 @@ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
+---------------------------------------------------------------------- */
-----------------------------------------------------------------------
-*/
-
-/** Implementation of the LimitBoneWeightsProcess post processing step */
-
-
 #include "LimitBoneWeightsProcess.h"
 #include <assimp/SmallVector.h>
 #include <assimp/StringUtils.h>
@@ -51,14 +44,16 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/scene.h>
 #include <stdio.h>
 
-using namespace Assimp;
+namespace Assimp {
+
+// Make sure this value is set.
+#ifndef AI_LMW_MAX_WEIGHTS
+#   define AI_LMW_MAX_WEIGHTS 16
+#endif
 
 // ------------------------------------------------------------------------------------------------
 // Constructor to be privately used by Importer
-LimitBoneWeightsProcess::LimitBoneWeightsProcess()
+LimitBoneWeightsProcess::LimitBoneWeightsProcess() : mMaxWeights(AI_LMW_MAX_WEIGHTS) {}
-{
-    mMaxWeights = AI_LMW_MAX_WEIGHTS;
-}
 
 // ------------------------------------------------------------------------------------------------
 // Destructor, private as well
@@ -66,15 +61,15 @@ LimitBoneWeightsProcess::~LimitBoneWeightsProcess() = default;
 
 // ------------------------------------------------------------------------------------------------
 // Returns whether the processing step is present in the given flag field.
-bool LimitBoneWeightsProcess::IsActive( unsigned int pFlags) const
+bool LimitBoneWeightsProcess::IsActive( unsigned int pFlags) const {
-{
     return (pFlags & aiProcess_LimitBoneWeights) != 0;
 }
 
 // ------------------------------------------------------------------------------------------------
 // Executes the post processing step on the given imported data.
-void LimitBoneWeightsProcess::Execute( aiScene* pScene)
+void LimitBoneWeightsProcess::Execute( aiScene* pScene) {
-{
+    ai_assert(pScene != nullptr);
+              
     ASSIMP_LOG_DEBUG("LimitBoneWeightsProcess begin");
 
     for (unsigned int m = 0; m < pScene->mNumMeshes; ++m) {
@@ -86,16 +81,30 @@ void LimitBoneWeightsProcess::Execute( aiScene* pScene)
 
 // ------------------------------------------------------------------------------------------------
 // Executes the post processing step on the given imported data.
-void LimitBoneWeightsProcess::SetupProperties(const Importer* pImp)
+void LimitBoneWeightsProcess::SetupProperties(const Importer* pImp) {
-{
-    // get the current value of the property
     this->mMaxWeights = pImp->GetPropertyInteger(AI_CONFIG_PP_LBW_MAX_WEIGHTS,AI_LMW_MAX_WEIGHTS);
 }
 
+// ------------------------------------------------------------------------------------------------
+static unsigned int removeEmptyBones(aiMesh *pMesh) {
+    ai_assert(pMesh != nullptr);
+    
+    unsigned int writeBone = 0;
+    for (unsigned int readBone = 0; readBone< pMesh->mNumBones; ++readBone) {
+        aiBone* bone = pMesh->mBones[readBone];
+        if (bone->mNumWeights > 0) {
+            pMesh->mBones[writeBone++] = bone;
+        } else {
+            delete bone;
+        }
+    }
+    
+    return writeBone;
+}
+
 // ------------------------------------------------------------------------------------------------
 // Unites identical vertices in the given mesh
-void LimitBoneWeightsProcess::ProcessMesh(aiMesh* pMesh)
+void LimitBoneWeightsProcess::ProcessMesh(aiMesh* pMesh) {
-{
     if (!pMesh->HasBones())
         return;
 
@@ -105,11 +114,9 @@ void LimitBoneWeightsProcess::ProcessMesh(aiMesh* pMesh)
     WeightsPerVertex vertexWeights(pMesh->mNumVertices);
     size_t maxVertexWeights = 0;
 
-    for (unsigned int b = 0; b < pMesh->mNumBones; ++b)
+    for (unsigned int b = 0; b < pMesh->mNumBones; ++b) {
-    {
         const aiBone* bone = pMesh->mBones[b];
-        for (unsigned int w = 0; w < bone->mNumWeights; ++w)
+        for (unsigned int w = 0; w < bone->mNumWeights; ++w) {
-        {
             const aiVertexWeight& vw = bone->mWeights[w];
 
             if (vertexWeights.size() <= vw.mVertexId)
@@ -126,8 +133,7 @@ void LimitBoneWeightsProcess::ProcessMesh(aiMesh* pMesh)
     unsigned int removed = 0, old_bones = pMesh->mNumBones;
 
     // now cut the weight count if it exceeds the maximum
-    for (WeightsPerVertex::iterator vit = vertexWeights.begin(); vit != vertexWeights.end(); ++vit)
+    for (WeightsPerVertex::iterator vit = vertexWeights.begin(); vit != vertexWeights.end(); ++vit) {
-    {
         if (vit->size() <= mMaxWeights)
             continue;
 
@@ -154,40 +160,27 @@ void LimitBoneWeightsProcess::ProcessMesh(aiMesh* pMesh)
     }
 
     // clear weight count for all bone
-    for (unsigned int a = 0; a < pMesh->mNumBones; ++a)
+    for (unsigned int a = 0; a < pMesh->mNumBones; ++a) {
-    {
         pMesh->mBones[a]->mNumWeights = 0;
     }
 
     // rebuild the vertex weight array for all bones
-    for (unsigned int a = 0; a < vertexWeights.size(); ++a)
+    for (unsigned int a = 0; a < vertexWeights.size(); ++a) {
-    {
         const VertexWeightArray& vw = vertexWeights[a];
-        for (const Weight* it = vw.begin(); it != vw.end(); ++it)
+        for (const Weight* it = vw.begin(); it != vw.end(); ++it) {
-        {
             aiBone* bone = pMesh->mBones[it->mBone];
             bone->mWeights[bone->mNumWeights++] = aiVertexWeight(a, it->mWeight);
         }
     }
 
     // remove empty bones
-    unsigned int writeBone = 0;
+#ifdef AI_CONFIG_IMPORT_REMOVE_EMPTY_BONES 
-
+    pMesh->mNumBones = removeEmptyBones(pMesh);
-    for (unsigned int readBone = 0; readBone< pMesh->mNumBones; ++readBone)
+#endif // AI_CONFIG_IMPORT_REMOVE_EMPTY_BONES 
-    {
-        aiBone* bone = pMesh->mBones[readBone];
-        if (bone->mNumWeights > 0)
-        {
-            pMesh->mBones[writeBone++] = bone;
-        }
-        else
-        {
-            delete bone;
-        }
-    }
-    pMesh->mNumBones = writeBone;
 
     if (!DefaultLogger::isNullLogger()) {
         ASSIMP_LOG_INFO("Removed ", removed, " weights. Input bones: ", old_bones, ". Output bones: ", pMesh->mNumBones);
     }
 }
+
+} // namespace Assimp