🇳🇴 Thor — backup account
Ray tracing a 2D scene from above is quite different from 3D ray tracing in perspective. With 3D ray tracing, you always know where to look for the light that you're gathering for a pixel, while, with 2D raytracing, you're looking for light passing through in any direction.
For my use case of tracing radio waves, it might make more sense to trace rays from the antenna and simply draw those straight into the display buffer.
Solid light cones would look better, though...
🇳🇴 Thor — backup account
I suppose what I could do is trace rays in N random directions per pixel in the plane, perhaps with a recursive algorithm that traces extra rays for high contrast parts of the arc.
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