Voxelising point clouds with VASA

Last week we saw a Dynamo graph that imports a point cloud from an ASCII-based format to specify the initial locations for a fun flocking simulation.

This week we’re going to look at a graph that uses a similar import technique but rather creates a voxel model based on the point cloud:

Point cloud

The main difference from the previous import code is that rather than returning a list of Point objects, we’ve tweaked the code to return 9 doubles for each point that are taken as triangle definitions. The little secret is that the triangle’s vertices are coincident: we use the same XYZ coordinates 3 times.

VASA’s VoxelModel has a handy ByTriangles node that will consume this list to populate itself: wherever a point is ingested that sits within a voxel, that voxel then gets switched on.

This allows us to work with point clouds as if they’re solid, which is pretty cool. There are number of parameters that are interesting to play with in the graph, so let’s take a look at them.

Point cloud load and slice graph


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