Optics
Starburst
Diffraction rays: an odd blade count gives twice as many as an even one.
Controls
- threshold
- A number from 0 to 1, 0.82 by default.
- blades
- Blades of the iris, not rays. An even count gives you that many rays, an odd count gives twice as many
- length
- How far a ray reaches before it dies out
- rotation
- Turns the star. One step between rays brings the same picture back
- intensity
- A number from 0 to 3, 1 by default.
- tint
- Colour of the rays. This belongs to the light, not the lens — real diffraction would spread them into a spectrum
- blend
- How the star is laid over the picture: added on top, screened, or only where it is brighter than what is already there