stick-the-quick/util/PlaneConvexDecompose.gd

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@tool class_name PlaneConvexDecompose
static func from(plane: Mesh, depth: float) -> Array[CollisionShape3D]:
var vertices: Array[Vector3] = [Vector3.ZERO, Vector3.ZERO, Vector3.ZERO]
var colliders: Array[CollisionShape3D] = []
var i: int = 0
for vertex in plane.get_faces():
vertices[i] = vertex
i += 1
if i >= 3:
i = 0
var shape := ConvexPolygonShape3D.new()
shape.points = [
vertices[0], vertices[1], vertices[2],
vertices[0] - Vector3.UP*depth,
vertices[1] - Vector3.UP*depth,
vertices[2] - Vector3.UP*depth
]
var collider := CollisionShape3D.new()
collider.shape = shape
colliders.push_back(collider)
return colliders