Is there a built-in function in THREE.js to determine if a THREE.Triangle overlaps with a THREE.Box3 object? If not, what approach can be taken to achieve this?
Is there a built-in function in THREE.js to determine if a THREE.Triangle overlaps with a THREE.Box3 object? If not, what approach can be taken to achieve this?
After realizing there was no built-in function for testing the intersection between a triangle and a box, I took it upon myself to develop an algorithm for this purpose. The approach I used was based on the Separating Axis Theorem (SAT), following advice from TheJim01. My specific need was to test for collision with an axis-aligned bounding box (AABB).
I found the following resources to be particularly helpful in guiding me through this process.
AABB Triangle intersection
Fast 3D Triangle-Box Overlap Testing (Akenine-Möller)
The book "Real-Time Collision Detection (Christer Ericson), pp. 169-172 (found online Google Book)
With the guidance from these sources, implementing the test wasn't as challenging as I initially thought. It became apparent that AABB-Triangle testing is a common operation in 3D graphics. Given this, I believe it would be beneficial to have a dedicated testing function for this in THREE.js. I intend to submit a feature request for this enhancement.
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