Hello to all I begin in Three js, I would like that when my box enters in collision of my Mesh that all the polygons which are inside my Mesh change of color Current result [Demo1] here is my function which allows me to detect the collision of my 2 objects detectCollisionObject(box) { const …

You can change colors of individual vertices of a geometry using vetrtexColor attribute, like so: Edit fiddle - JSFiddle - Code Playground Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

Perhaps these examples from the collection will help. ChangeColorOfFaceByClick SelectFacesWithinRadius

If the box is AABB, then I would go with patching of objects material, passing position and scaling of the box in uniforms, processing them in shaders to change model’s color in bounds of the box. I’ve got no a ready-to-use solution with a box, but here is a concept with a sphere:

How to change the color of the polygons of an object during a collision in Three JS?

Questions

tfoller August 23, 2022, 9:31pm 2

You can change colors of individual vertices of a geometry using vetrtexColor attribute, like so:

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How to change the color of the polygons of an object during a collision in Three JS?

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