intersect and delete 3D Mesh

Hi,

I'm trying to optimize a plotted 3D geometry by 'cutting' it with a differnt geometry. The Idea is to identify the intersecting parts of it and delete these. Does anyone know if this is possible? And if so how? The first geometry is a pyramid frustum and the second, which is going to be the cutting one, is a cylinder.

Let me know if theres a need of code, more infos or sth, im kinda new here :)

Cheers

[Dyuman Joshi]

What is the form of the 3D geometry?

Is it an external file like .stl? or do you simply have the data points for the geometry? or something else?

Answer 1

[George Abrahams]

Hi @Alexander. This is known as constructive solid geometry (CSG). Here are a few MATLAB resources for you.

• gptoolbox on File Exchange contains two functions, mesh_boolean and mesh_boolean_winding_number.
• Iso2Mesh on File Exchange contains the surfboolean function.
• GEOMLib on File Exchange is a library for 3D CSG.
• Surface Booleans on File Exchange gives a demonstration of CSG, but actively recommends Iso2Mesh over their code.