Posted on 2009-07-12 15:09
Tommy Liang 阅读(241)
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away3d
package
{
import away3d.containers.*;
import away3d.core.base.*;
import away3d.core.math.*;
import away3d.core.render.Renderer;
import away3d.events.*;
import away3d.materials.*;
import away3d.primitives.*;
import com.bit101.components.*;
import flash.display.Sprite;
import flash.display.Stage;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.utils.getTimer;
[SWF(width="465", height="400", frameRate="90", backgroundColor="#FFFFFF")]
public class Renderers extends Sprite
{
private var view:View3D;
private var baseObject:ObjectContainer3D;
private var swfStage:Stage;
private var cover:Cover;
private var triangles:Array;
private var numTriangles:Number = 15;
private var label1:Label;
private var label2:Label;
private var lastTime:Number;
private var state:String = "Single sided";
private var renderType:Number = 0;
private var renderTypeString:String = "Basic";
public function Renderers()
{
super();
triangles = new Array();
// prep for handling resizing events
swfStage = this.stage;
swfStage.scaleMode = StageScaleMode.NO_SCALE;
swfStage.align = StageAlign.TOP;
// create a 3D-viewport
view = new View3D({x:232, y:200});
view.renderer = Renderer.BASIC;
// add viewport to the stage
addChild(view);
view.camera.position = new Number3D(400, 500, 400);
view.camera.lookAt( new Number3D(0, 0, 0) );
baseObject = new ObjectContainer3D();
view.scene.addChild(baseObject);
// Make some triangles
var newTri:Triangle;
for(var i:Number = 0; i < numTriangles; i++)
{
newTri = makeTriangle();
// Move to random position
var max:Number = 90;
newTri.x = (Math.random()*max)-(max/2);
newTri.y = (Math.random()*max)-(max/2);
newTri.z = (Math.random()*max)-(max/2);
newTri.material = new ColorMaterial();
triangles.push(newTri);
baseObject.addChild(newTri);
}
view.render();
addControls();
// only run when user is hovering
cover = new Cover(this);
addChild(cover);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
private function onEnterFrame(e:Event):void
{
if(!cover.visible)
{
var fps:Number = Math.floor( 1000/(getTimer()-lastTime) );
label1.text = ""+numTriangles+" "+state+" triangles";
label2.text = renderTypeString+": "+fps+"fps";
lastTime = getTimer();
baseObject.rotationY += 1;
baseObject.rotationZ += 0.1;
baseObject.rotationX -= 0.05;
view.render();
}
}
private function makeTriangle():Triangle
{
// Create triangle and change face
var tri:Triangle = new Triangle({bothsides:false});
tri.a = getVertex();
tri.b = getVertex();
tri.c = getVertex();
return tri;
}
private function getVertex():Vertex
{
var maxSize:Number = 150;
var newX:Number = (Math.random()*maxSize)-(maxSize/2);
var newY:Number = (Math.random()*maxSize)-(maxSize/2);
var newZ:Number = (Math.random()*maxSize)-(maxSize/2);
var vert:Vertex = new Vertex(newX,newY,newZ);
return vert;
}
private function addControls():void
{
var pad:Number = 10;
label1 = new Label(this, pad, pad);
label1.autoSize = false;
label1.width = 140;
var leftButt:PushButton = new PushButton(this, pad, 30, "Both sided", makeBothsided);
leftButt.width = 140;
leftButt.height = 20;
var singleButt:PushButton = new PushButton(this, pad, 55, "Toggle single sided", makeSinglesided);
singleButt.width = 140;
singleButt.height = 20;
label2 = new Label(this, pad, 75);
label2.autoSize = false;
label2.width = 140;
var rendererButt:PushButton = new PushButton(this, pad, 95, "Change renderer", changeRenderer);
rendererButt.width = 140;
rendererButt.height = 20;
addChild(label1);
addChild(label2);
addChild(leftButt);
addChild(singleButt);
}
private function makeBothsided(e:MouseEvent):void
{
for(var i:Number = 0; i < triangles.length ; i++){
var tri:Triangle = triangles[i] as Triangle;
tri.bothsides = true;
tri.invertFaces();
state = "Both sided";
}
}
private function makeSinglesided(e:MouseEvent):void
{
for(var i:Number = 0; i < triangles.length ; i++){
var tri:Triangle = triangles[i] as Triangle;
tri.bothsides = false;
tri.invertFaces();
state = "Single sided";
}
}
private function changeRenderer(e:MouseEvent):void
{
renderType++;
if(renderType == 3){ renderType = 0; }
switch(renderType){
case 0 : view.renderer = Renderer.BASIC; renderTypeString = "Basic"; break;
case 1 : view.renderer = Renderer.CORRECT_Z_ORDER; renderTypeString = "Correct Z order"; break;
case 2 : view.renderer = Renderer.INTERSECTING_OBJECTS; renderTypeString = "Intersecting Objects"; break;
}
}
}
}