This assignment implements several different methods for evaluating form factors. The scene consisted of 2 parallel squares with a side length of 1.0. Three scenes were performed for each evaluation method. The only difference in these scenes was the distance between the two polygons. The form factor was calculated with the distance at 0.25, 1.0, and 4.0 units apart.

The pictures below are of the receiving surface. The form factor for the receiver was calculated at each the center of each pixel (128x128). The division of the source polygon depended on the sampling strategy used.

The sampling strategies used were: Monte Carloe: 16 samples taken randomly from the source Uniform sampling: 16 samples taken from a "grid" on the source Point-to-Disk sampling: The source was approximated by 16 disks Point-to-Convex Polygon sampling: The form factor was calculated by summing values around the polygon contour.

Notice that the brightness of all of the d=4.0 pictures have been scaled upwards failry aggressively (by 25x) so that it is possible to see something!

	Distance = 0.25	Distance = 1.0	Distance = 4.0
Monte Carlo
Uniform
Disk
Polygon

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For fun, here is a very close (d=0.1) disk-to-point sampling for your viewing pleasure. The artifacting is very obvious here!

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