original was TIFF, 24-bit, RGB format, 512x384, 217 colors
converted to 8-bit GIF for Mosaic compatibility
This simple image of box was done with the use of a single cutting plane. The effect of the plane can be seen in the gradation which occurs on two of the three visible sides of the box. In this picture, the location of the cutting plane is about halfway up the box, parallel to the front surface of the box, and in front of it. The gradation is calculated on top of any phong or gouraud shading values as well as any gradiation produced by another plane. The image is illuminated by a single barn-light and was rendered as plastic.