Introduction

The open source Blender modeler uses the binary .blend format to store all its assets. We developed a parser, fully under the permissive zlib license, to extract any data from this file format. The parsing is very fast so it can be directly used in a game or application.

Details

Some of the data that can be extracted from a .blend file:

triangle meshes, vertices and indices
textures embedded/packed in the jpg format
collision and physics information
animation and skinning information (see example in the OgreKit demo at the gamekit project)

Implementation

The .blend parser and example code is located in Oolong Engine2/Examples/Demos/ReadBlend.

Notes

If necessary, you can optimize the triangle mesh data using PowerVR SDK utilities such as TriStrip.

See the TriStripList function in OolongEngine2/Renderer/Geometry/TriStrip.cpp.
Textures could be optimized using PVRTC compression.

See also the OgreKit project at http://gamekit.googlecode.com on more advanced usage, such as extracting skeletal animation and skinning from a .blend file.

Comment by omai...@gmail.com, Oct 9, 2011

Please note that the method:

btCollisionObject* BulletBlendReaderNew::createBulletObject(Blender::Object* object);

has memory leak for

btTriangleMesh* meshInterface = new btTriangleMesh();

if the object type is: OB_RIGID_BODY or OB_DYNAMIC and the object->boundtype is:

OB_BOUND_SPHERE or OB_BOUND_BOX or OB_BOUND_CYLINDER or OB_BOUND_CONE

since all of the above bound types dosent use allocated meshInterface.

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