ASSIMP skeletal animation with some FBX files has issues - weird node added

Question

Hi I'm trying to work load fbx files to my OpenGL Renderer using ASSIMP.

However, weird nodes that are not in the original fbx file are added whenever I load the file with the ASSIMP importer.

For example, this is part of the node hierarchy printed while loading the nodes in a DFS matter.

mixamorig:LeftForeArm_$AssimpFbx$_Translation
ㄴmixamorig:LeftForeArm_$AssimpFbx$_PreRotation
 ㄴmixamorig:LeftForeArm_$AssimpFbx$_Rotation
  ㄴmixamorig:LeftForeArm_$AssimpFbx$_Scaling
   ㄴmixamorig:LeftForeArm

However, according to the original file, there should only be mixamorig:LeftForeArm.

This fbx file might be weird since usually in the case of other fbx files, I can get the node's translation, rotation, scaling keyframes directly from aiNodeAnim using the node's name. I never saw a case where the keyframe itself become a node.

Is there a way to resolve this issue?

Answer 1

Assimp::Importer importer; // add the next code,you'll get a sigle node importer.SetPropertyBool(AI_CONFIG_IMPORT_FBX_PRESERVE_PIVOTS, false);