Convert PMX to COLLADA for free

PMX is a model file format used in Japanese MMD (MikuMikuDance) software, the full name is Polygon Model eXtended. The PMX format has better extensibility and functionality than the original PMF (Polygon Movie Format) and PMD (Polygon Model Data) formats of MMD. The PMX format file contains all the information of the 3D model, including the model's mesh, materials, bones, weights, animation data, etc. In MMD, users can create their own 3D characters and make various animations by importing model files in PMX format. The PMX format supports more types of materials, including specular reflection, transparency, glow and other effects, as well as a variety of bone types and animation interpolation methods, which can more flexibly express various movements and postures.

COLLADA is an XML-based digital asset exchange solution for interactive 3D applications, allowing 3D creation applications to freely exchange digital assets without losing information - enabling a powerful toolchain pipeline combining multiple DCC and 3D processing software packages. Its unique interactive mode provides a comprehensive visual compilation. COLLADA FX supports the creation and encapsulation of shaders using OpenGL ES shading language, enabling first-class 3D creation tools to effectively collaborate in creating OpenGL / OpenGL ES applications and assets.

COLLADA is an open standard, originally used for 3D software data exchange, initiated by SCEA, and now supported by many well-known manufacturers such as Autodesk and XSI. COLLADA can be used not only for exchanging data between modeling tools, but also as a scene description language for small-scale real-time rendering. Because COLLADA DOM has rich content for representing various elements in the scene, from polygonal geometry to cameras, we can use the COLLADA DOM library to read and process scene files. The programming method of COLLADA DOM is similar to COM.