Shaders

spin_stars - A shader for traveling, spinning stars

This Renderman shader applies color stars with random rotation, spinning and movement to an object. The object is rendered transparent except where the stars appear.

Parameter	Data Type	Usage	Example
s_cells	Positive integer	tile count in s direction	s_cells = 10
t_cells	Positive integer	tile count in t direction	t_cells = 10
offset	float 0.0 to 1.0	offset in t direction for travel	offset = 0.5
spin	float 0.0 to PI * 2	rotation value of the star, after psuedorandom rotation	spin = 6.28318
r_min	float	radius of the star's inner point	r_min = 0.3
r_max	float	radius of the star's outer point	r_max = 0.7
star_points	Positive integer	The number of points in the star	star_points = 5
fuzz	float 0.0 to 1.0	color blending width	fuzz = 0.02

View the spin_stars shader source

Download the spin_stars package for Presenter 3D