Barnacles

Dependencies Shaders RenderMan Houdini Apprentice (embedded shaders) Movies (Sorenson 3) shader.rules sl2vex.h rmannotes.sl rn.h xforms.h shapes.h make.barn barnacle.h barndisp.sl barncolor.sl barnacle.rib barnflat.rib barndist.hipnc barnflat.hipnc Ridges [692K] Distribution [536K]

See also building barnacles

Description:

 * ---- common parameters ----------------
 * ncones: number of bulges in barnacle.
 * sfreq, tfreq: number of barnacles in s and t
 * sparse: control sparseness of barnacles across surface. The value is
 *    interpreted as follows:
 *      0 - appear all over surface
 *      0.5 - appear with density determined by the density function
 *      1 - appear nowhere
 *    values in between are interpolated.
 * variation: controls the frequency of a simple perlin noise function
 *    that controls the density of the barnacles.
 * seed: controls random attributes
 *
 * ---- surface parameters ----------------
 * basecolor: color of background "wood-like" shader (used instead of Cs)
 * Ka: ambient value
 *
 * ---- displacement parameters ----------
 * max_height: height of barnacles. Adjusted automatically based on frequency.
 * spikiness: length of spikes on top ridge of barnacle

   

Barnacle Shape

max_height = 1 ncones = 6 spikiness = 0.5 seed = 15	max_height = 1 ncones = 12 spikiness = 0.5 seed = 15	max_height = 1 ncones = 20 spikiness = 0.5 seed = 15
max_height = 1 ncones = 12 spikiness = 5 seed = 15	max_height = 2 ncones = 12 spikiness = 0.5 seed = 15	max_height = 2 ncones = 12 spikiness = 0.5 seed = 42

Barnacle Distribution

sparse = 0 variation = 4 seed = 15	sparse = 0.25 variation = 4 seed = 15	sparse = 0.5 variation = 4 seed = 15
sparse = 0.5 variation = 10 seed = 15	sparse = 0.5 variation = 10 seed = 42