perlin_world.hx

package;

import ui.Color;
import hxd.BitmapData;
import sys.io.File;
import hxd.Perlin;

function WorldGenTest() {
	var w = 512;
	var h = 512;
	var b = new BitmapData(w, h);
	var m_perlin = new Perlin();
	m_perlin.normalize = true;

	var seed = 12;
	var octaves1 = 10;
	var octaves2 = 15;
	var octaves3 = 20;

	var offset1 = 0.45; // threshold
	var offset2 = 0.4; // threshold
	var offset3 = 0.35; // threshold

	var gain1 = 3.0;
	var persist1 = 0.55;
	var lacunarity1	= 2.9;

	for (i in 0...w) {
		for (j in 0...h){
			var x = i/w;
			var y = j/h;
			var c1:Float = m_perlin.ridged(seed, x, y, octaves1, offset1, gain1, persist1, lacunarity1);
			var c2:Float = m_perlin.ridged(seed, x, y, octaves2, offset2, gain1, persist1, lacunarity1);
			var c3:Float = m_perlin.ridged(seed, x, y, octaves3, offset3, gain1, persist1, lacunarity1);

			var color = new h3d.Vector(c1,c2,c3);
			b.setPixel(i, j, color.toColor());
		}
	}

	var bpng = b.toPNG();
	sys.io.File.saveBytes('sideways$seed-$octaves1-$offset1-$gain1-$persist1-$lacunarity1.png', bpng);
}