val shader = SweepGradientShader(
                Offset(width / 2, width / 2),
                colors,
                List(colors.size) {
                    _sweepDeg * (it.toFloat() / (colors.size - 1)) / 360F
                }
            ).apply {
                val matrix = Matrix()
                matrix.postRotate(_startDeg - capDeg, width / 2, width / 2)
                setLocalMatrix(matrix)
            }