closes https://github.com/assimp/assimp/issues/1390: aiScene now stores metadata as well.

code/Version.cpp

@@ -118,19 +118,20 @@ ASSIMP_API const char *aiGetBranchName() {
 // ------------------------------------------------------------------------------------------------
 ASSIMP_API aiScene::aiScene()
 : mFlags(0)
-, mRootNode(NULL)
+, mRootNode(nullptr)
 , mNumMeshes(0)
-, mMeshes(NULL)
+, mMeshes(nullptr)
 , mNumMaterials(0)
-, mMaterials(NULL)
+, mMaterials(nullptr)
 , mNumAnimations(0)
-, mAnimations(NULL)
+, mAnimations(nullptr)
 , mNumTextures(0)
-, mTextures(NULL)
+, mTextures(nullptr)
 , mNumLights(0)
-, mLights(NULL)
+, mLights(nullptr)
 , mNumCameras(0)
-, mCameras(NULL)
+, mCameras(nullptr)
+, mMetaData(nullptr)
 , mPrivate(new Assimp::ScenePrivateData()) {
 	// empty
 }
@@ -173,6 +174,9 @@ ASSIMP_API aiScene::~aiScene() {
             delete mCameras[a];
     delete [] mCameras;
 
+    aiMetadata::Dealloc(mMetaData);
+    mMetaData = nullptr;
+
     delete static_cast<Assimp::ScenePrivateData*>( mPrivate );
 }
 

include/assimp/scene.h

@@ -326,6 +326,16 @@ struct aiScene
     */
     C_STRUCT aiCamera** mCameras;
 
+    /**
+     *  @brief  The global metadata assigned to the scene itself.
+     *
+     *  This data contains global metadata which belongs to the scene like 
+     *  unit-conversions, versions, vendors or other model-specific data. This 
+     *  can be used to store format-specific metadata as well.
+     */
+    C_STRUCT aiMetadata* mMetaData;
+
+
 #ifdef __cplusplus
 
     //! Default constructor - set everything to 0/NULL