Merge branch 'master' into kimkulling/refactoring_geoutils

code/PostProcessing/ConvertToLHProcess.cpp

@@ -111,6 +111,12 @@ void MakeLeftHandedProcess::Execute(aiScene *pScene) {
             ProcessAnimation(nodeAnim);
         }
     }
+
+    // process the cameras accordingly
+    for( unsigned int a = 0; a < pScene->mNumCameras; ++a)
+    {
+        ProcessCamera(pScene->mCameras[a]);
+    }
     ASSIMP_LOG_DEBUG("MakeLeftHandedProcess finished");
 }
 
@@ -222,6 +228,13 @@ void MakeLeftHandedProcess::ProcessAnimation(aiNodeAnim *pAnim) {
     }
 }
 
+// ------------------------------------------------------------------------------------------------
+// Converts a single camera to left handed coordinates.
+void MakeLeftHandedProcess::ProcessCamera( aiCamera* pCam)
+{
+    pCam->mLookAt = ai_real(2.0f) * pCam->mPosition - pCam->mLookAt;
+}
+
 #endif // !!  ASSIMP_BUILD_NO_MAKELEFTHANDED_PROCESS
 #ifndef ASSIMP_BUILD_NO_FLIPUVS_PROCESS
 // # FlipUVsProcess

code/PostProcessing/ConvertToLHProcess.h

@@ -58,6 +58,7 @@ struct aiMesh;
 struct aiNodeAnim;
 struct aiNode;
 struct aiMaterial;
+struct aiCamera;
 
 namespace Assimp    {
 
@@ -109,6 +110,14 @@ protected:
      * @param pAnim The bone animation to transform
      */
     void ProcessAnimation( aiNodeAnim* pAnim);
+
+    // -------------------------------------------------------------------
+    /** Converts a single camera to left handed coordinates.
+     * The camera viewing direction is inverted by reflecting mLookAt
+     * across mPosition.
+     * @param pCam The camera to convert
+     */
+    void ProcessCamera( aiCamera* pCam);
 };
 
 

code/PostProcessing/PretransformVertices.cpp

@@ -588,7 +588,7 @@ void PretransformVertices::Execute(aiScene *pScene) {
 		// 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->mLookAt = nd->mTransformation * cam->mLookAt;
 		cam->mUp = aiMatrix3x3(nd->mTransformation) * cam->mUp;
 	}
 

code/PostProcessing/ValidateDataStructure.cpp

@@ -286,7 +286,6 @@ void ValidateDSProcess::Validate(const aiMesh *pMesh) {
             switch (face.mNumIndices) {
             case 0:
                 ReportError("aiMesh::mFaces[%i].mNumIndices is 0", i);
-                break;
             case 1:
                 if (0 == (pMesh->mPrimitiveTypes & aiPrimitiveType_POINT)) {
                     ReportError("aiMesh::mFaces[%i] is a POINT but aiMesh::mPrimitiveTypes "
@@ -898,7 +897,12 @@ void ValidateDSProcess::Validate(const aiNode *pNode) {
                     nodeName, pNode->mNumChildren);
         }
         for (unsigned int i = 0; i < pNode->mNumChildren; ++i) {
-            Validate(pNode->mChildren[i]);
+            const aiNode *pChild = pNode->mChildren[i];
+            Validate(pChild);
+            if (pChild->mParent != pNode) {
+                const char *parentName = (pChild->mParent != nullptr) ? pChild->mParent->mName.C_Str() : "null";
+                ReportError("aiNode \"%s\" child %i \"%s\" parent is someone else: \"%s\"", pNode->mName.C_Str(), i, pChild->mName.C_Str(), parentName);
+            }
         }
     }
 }