qtvismach, a axis toolpath

class Color(Collection):
    def __init__(self, color, parts):
        self.color = color
        Collection.__init__(self, parts)

    def apply(self):
        GL.glPushAttrib(GL.GL_LIGHTING_BIT)
        GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT_AND_DIFFUSE, self.color)
        if self.color[3] < 1:
            GL.glEnable(GL.GL_BLEND)
            GL.glBlendColor(0, 0, 0, self.color[3])  # rgba

    def unapply(self):
        GL.glPopAttrib()
        GL.glDisable(GL.GL_BLEND)

The the alpha setting is honoured.

Does mill turn not help with the A axis?

        if self.color[3] < 1:
            GL.glEnable(GL.GL_BLEND)
            GL.glBlendColor(0, 0, 0, 1 - self.color[3])  # rgba

    def apply(self):
        GL.glPushAttrib(GL.GL_LIGHTING_BIT)
        GL.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT_AND_DIFFUSE, self.color)
        GL.glEnable(GL.GL_BLEND)
        GL.glBlendColor(0, 0, 0, .5)  # rgba

work = Capture()

ctable = Collection([
         work,
         CylinderZ(-18, 50, 0, 50),
         # cross
         Color([1,1,1,0], [CylinderX(-50,1,50,1)]),
         Color([1,1,1,0], [CylinderY(-50,1,50,1)]),
         # lump on one side
         Color([1,1,1,0], [Box(42, -4, -20, 51, 4, 5)])
         ])
ctable = HalRotate([ctable],c,"rotate-c",1,0,0,1)