I create a rectangle with cut or rounded corners using ExtrudeGeometry and after rotating its mesh I get a bounding box larger than this geometry. If I rotate the geometry itself, the problem disappears, but when I group several of these geometries and rotate this group, the problem occurs again. I …

I found a solution. You should modify “expandByObject” method of Box3 class like this: expandByObject(object) { object.updateWorldMatrix(false, false); const geometry = object.geometry; if (geometry !== undefined) { object.updateWorldMatrix(true, false); geometry.computeBoundingBox(object.m…

Bounding box bigger than concave object (ExtrudeGeometry)

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s0a January 2, 2022, 12:49am 4

I patched my source to use this workaround and:

it does fix bounding box computation
but it also breaks ray intersections

Invalid bounds generated for some orientations

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Bounding box bigger than concave object (ExtrudeGeometry)

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