2d Basic Path Tracer

Point display (runs faster if turned off, and is also sometimes delayed a bit)

Vertices

Segments, in the form of a point, where the x is the index of the first vertex, and the y is the index of the second vertex.

Light values for each segment (R,G,B)

List of segments which emit light. I recommend keeping the number of these as low as possible, because each pixel randomly chooses *one* per frame-- this means that the more segments that emit light, the more frames will be needed for a decent image.