ConvertToLHProcess noew inverts viewing direction

code/PostProcessing/ConvertToLHProcess.cpp

@@ -113,6 +113,12 @@ 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");
 }
 
@@ -231,6 +237,13 @@ void MakeLeftHandedProcess::ProcessAnimation(aiNodeAnim *pAnim) {
     }
 }
 
+// ------------------------------------------------------------------------------------------------
+// Converts a single camera to left handed coordinates.
+void MakeLeftHandedProcess::ProcessCamera( aiCamera* pCam)
+{
+    pCam->mLookAt = 2.0f * pCam->mPosition - pCam->mLookAt;
+}
+
 #endif // !!  ASSIMP_BUILD_NO_MAKELEFTHANDED_PROCESS
 #ifndef ASSIMP_BUILD_NO_FLIPUVS_PROCESS
 // # FlipUVsProcess