Method ApplyMatrix

geometry/geometry.go:466–481

TODO: https://stackoverflow.com/questions/21640545/how-to-check-for-convexity-of-a-3d-mesh func (g *Geometry) IsConvex() bool { { ApplyMatrix multiplies each of the geometry position vertices by the specified matrix and apply the correspondent normal transform matrix to the geometry normal vectors.

(m *math32.Matrix4)

// transform matrix to the geometry normal vectors.
// The geometry's bounding box and sphere are recomputed if needed.
func (g *Geometry) ApplyMatrix(m *math32.Matrix4) {

	// Apply matrix to all vertices
	g.OperateOnVertices(func(vertex *math32.Vector3) bool {
		vertex.ApplyMatrix4(m)
		return false
	})

	// Apply normal matrix to all normal vectors
	var normalMatrix math32.Matrix3
	normalMatrix.GetNormalMatrix(m)
	g.OperateOnVertexNormals(func(normal *math32.Vector3) bool {
		normal.ApplyMatrix3(&normalMatrix).Normalize()
		return false
	})
}

// Incref increments the reference count for this geometry
// and returns a pointer to the geometry.