What the does the `TopLeftEdge` mean

Forceflow / cuda_voxelizer

CUDA Voxelizer to convert polygon meshes into annotated voxel grids

MIT License

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Closed maidamai0 closed 1 year ago

maidamai0 commented 2 years ago

Hi, thanks for sharing this code and I'm experimenting the code. I don't quite understand the TopLeftEdge function https://github.com/Forceflow/cuda_voxelizer/blob/8ad08043b1af5b9c6f3399322505e2faee83a28b/src/voxelize_solid.cu#L67

Is this check necessary?
What does it mean in geometry, does it mean the top left edge of a triange as the name implies, if yes why we should do this check?

Forceflow commented 1 year ago

Check the original Schwarz & Seidel paper this method is based on for details: http://research.michael-schwarz.com/publ/files/vox-siga10.pdf