Papaiart Animation Studio 1.0

We have reached the first milestone. Version 1.0 is already a highly useful tool for animators and game developers alike.

What is an even bigger step forward:

FBX export — brand-new system (the biggest item)

• New standalone MeshLoaderFBX_Export.cpp (~1,370 lines) and a Blender-style export popup with a full settings set (FbxExportSettings + presets).
• Bone/skinning and animation export, axis conversion (Forward/Up), global scale, Apply Transform (bakes world transform into geometry), n-gon triangulation.
• Materials: diffuse + normal map + emissive map, PBR scalars (metallic/roughness), and per-face multi-material (submesh) support.
• Texture path modes: Absolute / Relative / Strip Path / Copy (copies textures next to the FBX).
• Vertex color round-trip (import → edit → export).

FBX import — major rework

• Rewritten MeshLoaderFBX.cpp, new FbxNode.h, FBX animation import, multi-material import, texture path resolution, import settings + presets UI.

OBJ import/export UI — dedicated settings & preset system (ObjImport/ExportSettings, …Presets).

Material & UV system

• New MaterialRegistry, multi-material groups, fully reworked material inspector.
• Multi-UV (multiple UV channels), large UV editor panel rewrite, 2D drawing gizmo (Gizmo2D).

Rendering refactor + performance

• EntityRenderer / RendererManager / MeshGPUBuffer moved to GPU-buffer-based rendering; consolidated duplicated texture loaders. Updated shaders.
• Detailed refactor plan and FBX export checklist docs added (docs/).
• Timeline panel, mirror/subdivision modifiers, undo/redo refinements.