Primary changes are to include/assimp/metadata.h, adding in the aiMetadata GetAiType function,
adding the operator= to allow an aiMetadata type to be assigned, adding a check for the
AI_AIMETADATA type flag as it can't be trivially memcpy'd.
operator= is implemented with a by-value argument as then the copy is made by the copy
constructor and we can just swap everything out and let the destructor handle the mess.
Implemented parsing of the "extensions" flag on all glTF2 Nodes. Doesn't use the ReadValue
helper function on numbers as it did not seem to fill out the Nullable structure properly.
There's a code path where an input scene only has a single mesh.
In this case, if ProcessMesh returns 2, we delete the mesh and move on
with the postprocessing. UpdateMeshReferences is not called and so the
deleted mesh is left dangling in nodes.
In a later step (SplitMesh in my testing), it then tries to deference a
null pointer and we explode.
With `out = true`, we can now hit the DeadlyImportError instead of a
segfault.
In debug builds, there's no issues, but in release, an invalid mesh that
is deleted in FindInvalidDataProcess will be double free'd when the
parent scene is destroyed.
This bug has been present since after the 4.10 release.
It fixes the issue "play the bvh error" #2187
Almost all bvh files are affected, such as any of the CMU library.
The bug is caused by the introduction of channelMap in the BVHLoader.cpp - function void BVHLoader::CreateAnimation(aiScene *pScene). The channelMap loses the rotation order present oin the BVH file, and always applies the rotations in X,Y,Z order.