So essentially what I am trying to do is let's say you have an ellipse in the center of the screen, and it's value/radius is 100. I want to visualize data in such a way that you can input a value into this ellipse, let's say you select a value of 20. I want that value to "fill" part of the ellipse, as if it were water accumulating at the bottom of the circle. So I can think of two ways that this might be accomplished.. one is by using arcs and the other using textures. I would like to be able to add multiple values to this ellipse, each represented by a different color.