BumpMap

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favorite:23
lines:108
license : All rights reserved
modified : 2009-09-28 22:22:21

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package {
 import flash.display.BitmapData;
 import flash.events.Event;
 import flash.display.Sprite;
 import flash.filters.ColorMatrixFilter;
 import flash.filters.ShaderFilter;
 import flash.geom.ColorTransform;
 import flash.geom.Matrix3D;
 import flash.geom.PerspectiveProjection;
 import flash.geom.Utils3D;
 import flash.geom.Vector3D;
 
 [SWF(width=465,height=465,frameRate=60,backgroundColor=0x111111)]
 public class BumpMap extends Sprite {
 private var vertices:Vector.<Number> = new Vector.<Number>(0, false);
 private var projected:Vector.<Number> = new Vector.<Number>(0, false);
 private var indices:Vector.<int> = new Vector.<int>(0, false);
 private var uvtData:Vector.<Number> = new Vector.<Number>(0, false);
 private var projection:PerspectiveProjection = new PerspectiveProjection();
 private var count:uint = 0;
 private var heightMap:BitmapData = new HeightMap();
 private var normalMap:BitmapData;
 private var texture:BitmapData = new BitmapData(256, 256, false, 0);
 
 public function BumpMap() {
 x = y = 465 / 2;
 vertices.push(-300, +300, 0, +300, +300, 0, +300, -300, 0, -300, -300, 0);
 uvtData.push(0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0);
 indices.push(0, 1, 2, 2, 3, 0);
 projection.fieldOfView = 60;
 
 var h2nShader:HeightToNormalShader = new HeightToNormalShader();
 h2nShader.data.multiplier.value = [10];
 normalMap = new BitmapData(256, 256, false, 0);
 normalMap.applyFilter(heightMap, heightMap.rect, heightMap.rect.topLeft, new ShaderFilter(h2nShader));
 
 addEventListener(Event.ENTER_FRAME, enterFrame);
 }
 
 private function enterFrame(event:Event):void {
 var view:Matrix3D = new Matrix3D();
 view.appendRotation(Math.cos(count * 0.017) * 60, Vector3D.X_AXIS);
 view.appendRotation(Math.cos(count * 0.031) * 60, Vector3D.Y_AXIS);
 var light:Vector3D = view.transformVector(Vector3D.Z_AXIS);
 view.appendTranslation(0, 0, 850);
 view.append(projection.toMatrix3D());
 Utils3D.projectVectors(view, vertices, projected, uvtData);
 var lighting:ColorMatrixFilter = new ColorMatrixFilter([
 2 * light.x, 2 * light.y, 2 * light.z, 0, (light.x + light.y + light.z) * -0xFF,
 2 * light.x, 2 * light.y, 2 * light.z, 0, (light.x + light.y + light.z) * -0xFF,
 2 * light.x, 2 * light.y, 2 * light.z, 0, (light.x + light.y + light.z) * -0xFF,
 0, 0, 0, 1, 0
 ]);
 texture.applyFilter(normalMap, normalMap.rect, normalMap.rect.topLeft, lighting);
 graphics.clear();
 graphics.beginBitmapFill(texture, null, false, true);
 graphics.drawTriangles(projected, indices, uvtData);
 count++;
 }
 }
}
import flash.display.BitmapData;
import flash.display.Shader;
import flash.display.Sprite;
import flash.text.TextField;
import flash.geom.ColorTransform;
import flash.geom.Rectangle;
import flash.geom.Matrix;
import flash.filters.GlowFilter;
import flash.utils.ByteArray;
import mx.utils.Base64Decoder;
class HeightToNormalShader extends Shader {
 protected var base64:String = "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";
 public function HeightToNormalShader() {
 var decoder:Base64Decoder = new Base64Decoder();
 decoder.decode(base64);
 super(decoder.drain());
 }
}
class HeightMap extends BitmapData {
 public function HeightMap() {
 super(256, 256, true, 0);
 perlinNoise(64, 64, 4, Math.random() * 100, false, true, 0, true);
 colorTransform(rect, new ColorTransform(1.5, 1.5, 1.5, 1, -0x40, -0x40, -0x40));
 fillRect(new Rectangle(0, 52, 256, 152), 0xFF808080);
 draw(new Pattern());
 }
}
class Pattern extends Sprite {
 public function Pattern() {
 var label:TextField = new TextField();
 label.autoSize = "left";
 label.htmlText = 'BUMP\nMAPPING';
 label.x = 256 - label.width >> 1;
 label.y = 256 - label.height >> 1;
 label.filters = [new GlowFilter(0x000000, 1, 4, 4, 2, 3, true)];
 addChild(label);
 var mtx:Matrix = new Matrix();
 var colors:Array = [0xFFFFFF, 0x000000];
 var alphas:Array = [1, 1];
 var ratios:Array = [0x00, 0xFF];
 for (var i:uint=1; i<8; i++) {
 mtx.createGradientBox(20, 20, 0, i * 32 - 10, 26 - 10);
 graphics.beginGradientFill("radial", colors, alphas, ratios, mtx);
 graphics.drawCircle(i * 32, 26, 10);
 graphics.endFill();
 mtx.createGradientBox(20, 20, 0, i * 32 - 10, 230 - 10);
 graphics.beginGradientFill("radial", colors, alphas, ratios, mtx);
 graphics.drawCircle(i * 32, 230, 10);
 graphics.endFill();
 }
 }
}

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