Mesh triangle reduction using quadrics

Summary Since I couldnt find any code thats fast, memory efficient, free and for high quality, I developed my version of the quadric based edge collapse mesh simplification method. It uses a threshold to determine which triangles to delete, which avoids sorting but might lead to lesser quality. It is about 4x as fast as Meshlab and can simplify 2M -> 30k triangles in 3.5 seconds.

Usage The functionality is contained in Simplify.h. The function to call is simplify_mesh(target_count). The code is kept pretty slim, so the main method has just around 400 lines of code.

Obj File Limitations The Obj file may only have one group or object. Its a very simple reader/writer, so dont try to use multiple objects in one file

License : MIT

Please dont forget to cite this page if you use my code!