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sdf library in a Python virtualenv. git clone https://github.com/fogleman/sdf.git cd sdf virtualenv env . env/bin/activate pip install -e . Confirm that it works: You can skip the installation if you always run scripts that import sdf from the root folder. File Formats sdf natively writes binary STL files. For other formats, meshio is used (based on your output file extension). This adds support for over 20 different 3D file formats, including OBJ, PLY, VTK, and many more. Viewing the Mesh Find and install a 3D mesh viewer for your platform, such as MeshLab. I have developed and use my own c...

Metaballs and Marching Squares Click any of the animations to pause Something about making visually interesting simulations to play with just gets me really excited about programming, particularly when there’s some cool algorithm or bit of math backing it. Reading a bit about particle simulations on Wikipedia, I stumbled upon metaballs. In 3D, metaballs looks something like this: From Metaballs on Wikipedia This looked like it had the potential to yield some cool behaviour, so I decided to dive in. To start, I just wanted some circles bouncing around, like this: Sweet. The next step is to ...

For the sake of concreteness, let us suppose that we have approximated our potential field by sampling it onto a cubical grid at some fixed resolution.  To get intermediate values, we’ll just interpolate between grid points using the standard trilinear interpolation.  This is like a generalization of Minecraft-style voxel surfaces.  Our goal in this article is to figure out how to extract a mesh of the implicit surface (or zero-crossings of ).  In particular, we’re going to look at three different approaches to this problem: Marching Cubes By far the most famous method for extrac...