Animated Color Procedural Texture

Latest revision as of 20:52, 10 January 2012

Author: Antony Stewart

[edit] Description

Variation of the procedural perlin noise demo script, to generate textures with mixes of RGB by blending 3 independant RGB x,y, graphs. Also HSBColor.

[edit] Usage

Attach this script to the object that you wish to give a special effects color. Write maths functions for the red, blue, green variables that compute between 0 and 1, based on x,y, graphs. pastel colors are closer to .7 and bright colors closer to 1. for example if you want a psycadelically angry robot, make a black and red dot graph and animate with Time.time*30, i.e. warping very fast. You need to know abit about 2D graphs.

straight =sin(x*.3)

vertical =sin(y*.3)

oblique = sin(x+y) or (x-y)

wiggle = sin(x*.2+sin(y*.5)*.3)

complex wiggles = add multiple wiggles together.

Note: x and y =128 so sensible sine multipliers are 0.1,0.345 etc, not 20.

[edit] JavaScript - AnimatedTextureUV.js

var gray = true;
var width = 128;
var height = 128;
 
private var texture : Texture2D;
 
function Start ()
{
	texture = new Texture2D(width, height, TextureFormat.RGB24, false);
	renderer.material.mainTexture = texture;
}
 
function Update()
{
	Calculate();
}
 
function Calculate()
{
 
 
	for (var y = 0;y<height;y++)
	{
		for (var x = 0;x<width;x++)
		{
			if (gray)
			{
			var red = 0;
			var green = Mathf.Sin(x*.5+Time.time+Mathf.Sin(y*.23)*.8)/5+.5;
			var blue = Mathf.Sin(x*.3+Time.time+Mathf.Sin(x*.43)*.4)/5+.5;
 
				texture.SetPixel(x, y, Color (red, green, blue, 1));
			}
			else
			{
 
 
				texture.SetPixel(x, y, Color (1, 0, 0, 1));
			}
		}	
	}
 
	texture.Apply();
}