How do i preform a boolean operations(CSG)??

Scripting
1

Hello i have been learning about CSG i have checked out evanW. And Sander Van Rossen blog about CSG(real-time), i understand on what Sander is talking about but i don’t know how to code it, i have been to many websites but its always in another code language and not in C#, so if anyone knows how to do CSG could you help me out? cheers

2

Blender3D has a boolean modifier functionality that can do all of the above.

Full source code is available at https://www.blender.org

From there you should be able to get a pseudocode idea of what is involved step-wise.

After that, coding it in C# is just an “implementation detail™.”

1 Like
3

Asset store has plugins to do that (so could check those how its done)

seen few free ones in the forums too, search for unity csg

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i’ll check it out

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Now @mgear Kurt-Dekker i have looked at the pb_CSG but how do i a
Perform boolean operation without creating a new mesh?

I did try this

        m.RecalculateBounds();
        m.RecalculateNormals();

and this, but it doesn’t work.

CSG.Subtract(cube, sphere);
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So @mgear would you know how to it??

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It gives you a new mesh back so just assign the new mesh to the one you want to replace.

8

how?

9

Not sure I understand?

Mesh mesh = CSG.Subtract(cube, sphere);
MeshFilter filter = replacement.GetComponent<MeshFilter>();
filter.mesh = mesh;
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The mesh is supplied by a property within the MeshFilter component.

The MeshFilter component in turn supplies the attached mesh to either a MeshRenderer or a SkinnedMeshRenderer.

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What is “replacement” in line 3 @KelsoMRK

I don’t really understand @Kurt-Dekker could you use code and describe on what it does or link me to a website with the info. thanks :smile: