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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

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A marching cubes implementation, using libigl

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