Download source code :

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Download source code :

Code Explanation:
bitmap.perlinNoise(200,100,5,1,true,true,12,false);
//bitmap.perlinNoise(baseX,baseY,octaves,seed,stitch,fractal,channel, // grayscale );
// baseX and baseY defines the size of pattern
//octaves determines iterations of noise
// seed determines number to give you different pattern each time
//fractal for smoothing edges if set to true
//channel can be red,green,blue and aplha or combination (1,2,4,1n 8 etc)
// greyscale if set to true gives grayscale only
Change the values to get new effects.