3D models and animation from Blender to LibGDX STEP 1: Model your model This step is pretty straight forward, you need to model an object to be exported. To a much lesser degree, it is also a code generator sort of. Basically you create your assets and world in Blender, apply properties using the BGE and Physics portions of Blender, then export and run. Then the cool part it's also a plugin to Blender that turns Blender into your 3D world editor. Essentially I suppose you can think of it as a 3D scene graph. This operation is called indexing.So, what exactly is BDX? Well basically it's a Java library built over top of LibGDX adding 3D support. Namely, removing the indexes and have plain glm::vec3 instead. But it’s not enough, we have to put this into a form that OpenGL likes. We had a string, we now have a set of std::vectors. So what we did there was simply to change the “shape” of the data. This code is in fact very similar to the previous one, except that there is more data to read. } else if ( strcmp ( lineHeader, "f" ) = 0 ) vertexIndices. We need some temporary variables in which we will store the contents of the. Since our toy loader will be severely limited, we have to be extra careful to set the right options when exporting the file. So the approach I took for this tutorial is to make a standard, non-indexed mesh, and deal with indexing later, in Tutorial 9, which will explain how to work around this. The bad news is that OpenGL can’t be told to use one index for the position, another for the texture, and another for the normal. It’s handy because if several vertices share the same position, you just have to write one “v” in the file, and use it several times. 11 says which texture coordinate to use.For the first vertex, 8 says which vertex to use.6/10/7 describes the third vertex of the triangle (duh).7/12/7 describes the second vertex of the triangle.8/11/7 describes the first vertex of the triangle.vt is the texture coordinate of one vertex.usemtl and mtllib describe the look of the model.# Blender3D v249 OBJ File: untitled.blend
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