func (c *Camera) project(pt mgl32.Vec2) mgl32.Vec2 { var ( screen = pt.Vec4(1, 1) out mgl32.Vec4 ) out = c.Projection.Mul4x1(screen) return out.Vec2() }
func (c *Camera) unproject(pt mgl32.Vec2) mgl32.Vec2 { var ( screen = pt.Vec4(1, 1) out mgl32.Vec4 ) out = c.Inverse.Mul4x1(screen) out = out.Mul(1.0 / out[3]) return out.Vec2() }