Experimenting with generating meshes from implicit surfaces.

High and low resolution meshes from the same surface.

3D trig defines a surface. Marching cubes to convert to a mesh. Rendered in #PBRT. Orchestrated in #RStats

#RStats #PBRT #MarchingCubes

#Blog day! This week we’ll talk about the marching cubes algorithm, but we will start from marching squares to get a strong intuition. Please give it a read if you are interested!

https://blog.42yeah.is/algorithm/2023/07/15/marching-cubes.html

#MarchingCubes #MarchingSquares #Graphics

Still toying with #webgpu ... Not sure what I was trying to accomplish with this example, or what I was expecting exactly.

I suppose it is a hybrid of #raycasting / #raymarching (not with a signed distance field, but with scalar field gradients) and #marchingcubes (minus the polygonization). Maybe there is a proper name for it in the graphics circles?

I am using a #compute #shader to create a 3D texture with scalar field values and gradients, and sampling it in the fragment shader (the thing that shoots it with rays 🙂 )

Assuming the compression did not kill it, I kinda liked the quality more than using the conventional marching cubes/tetrahedra. Still, it might be a waste of GPU power on something simple. Also there are some undesirable artefacts that I could not get rid of.

The toy could be found here: https://ghadeeras.github.io/pages/scalar-field-tracing