Marching cubes

Roberto Toro, May 2019

Just a marching cubes. Based on libigl.

Usage

marching_cubes input.bin input.txt input_level decimation_ratio output.ply

Where

• input.bin: binary volume, encoded in shorts (int16)
• input.txt: text file describing the data. Format is:

  dim: xdim ydim zdim
  dataType: short
  voxelSize: xsize ysize zsize
  

  Where xdim, ydim and zdim are integer number of voxels in the x, y and z dimensions; short is always short but one day may be something else; and xsize, ysize and zsize are floting point voxel dimensions (for example, 0.1).
• input_level: the value in input.bin at which the mesh is created.
• decimation_ratio: the amount of decimation used after creating the raw mesh. For example, 1 if no decimation is required, or 10 to decrease triangles by 10 times.
• output.ply: the output mesh, in .ply format.

Compilation

First, get a copy of libigl and put it at the same level of the marching_cubes directory. Then use the usual cmake procedure:

cd marching_cubes
mkdir build
cd build
cmake ..
make