/as3/trunk/src/org/papervision3d/core/render/command/RenderTriangle.as
ActionScript | 396 lines | 319 code | 64 blank | 13 comment | 61 complexity | 11056e7ec8a419d443a893f9c14e733f MD5 | raw file
- package org.papervision3d.core.render.command
- {
-
- /**
- * @Author Ralph Hauwert
- */
- import flash.display.BitmapData;
- import flash.display.Graphics;
- import flash.display.Sprite;
- import flash.geom.Point;
- import flash.geom.Rectangle;
-
- import org.papervision3d.core.geom.renderables.Triangle3D;
- import org.papervision3d.core.geom.renderables.Vertex3DInstance;
- import org.papervision3d.core.math.Matrix3D;
- import org.papervision3d.core.math.Number3D;
- import org.papervision3d.core.math.NumberUV;
- import org.papervision3d.core.proto.MaterialObject3D;
- import org.papervision3d.core.render.data.RenderHitData;
- import org.papervision3d.core.render.data.RenderSessionData;
- import org.papervision3d.core.render.draw.ITriangleDrawer;
- import org.papervision3d.materials.BitmapMaterial;
- import org.papervision3d.materials.MovieMaterial;
-
- public class RenderTriangle extends RenderableListItem implements IRenderListItem
- {
- protected static var resBA:Vertex3DInstance = new Vertex3DInstance();
- protected static var resPA:Vertex3DInstance = new Vertex3DInstance();
- protected static var resRA:Vertex3DInstance = new Vertex3DInstance();
- protected static var vPoint:Vertex3DInstance = new Vertex3DInstance();
-
- private var position:Number3D = new Number3D();
-
- public var triangle:Triangle3D;
- public var container:Sprite;
- public var renderer:ITriangleDrawer;
- public var renderMat:MaterialObject3D;
-
- /*
- Drawing Variables
- */
- public var v0:Vertex3DInstance;
- public var v1:Vertex3DInstance;
- public var v2:Vertex3DInstance;
-
- public var uv0:NumberUV;
- public var uv1:NumberUV;
- public var uv2:NumberUV;
-
- //for creating new RT from store. See TriangleMesh3D createDrawTriangle
- public var create:Function;
-
- public function RenderTriangle(triangle:Triangle3D):void
- {
- this.triangle = triangle;
- this.instance = triangle.instance;
- renderableInstance = triangle;
- renderable = Triangle3D;
-
- this.v0 = triangle.v0.vertex3DInstance;
- this.v1 = triangle.v1.vertex3DInstance;
- this.v2 = triangle.v2.vertex3DInstance;
-
- this.uv0 = triangle.uv0;
- this.uv1 = triangle.uv1;
- this.uv2 = triangle.uv2;
-
- this.renderer = triangle.material;
-
- update();
- }
-
-
-
- override public function render(renderSessionData:RenderSessionData, graphics:Graphics):void
- {
-
- renderer.drawTriangle(this, graphics, renderSessionData);
-
- }
-
- protected var vPointL:Vertex3DInstance;
- protected var vx0:Vertex3DInstance;
- protected var vx1:Vertex3DInstance;
- protected var vx2:Vertex3DInstance;
-
- override public function hitTestPoint2D(point:Point, renderhitData:RenderHitData):RenderHitData
- {
- renderMat = triangle.material;
- if( !renderMat ) renderMat = triangle.instance.material;
-
- if(renderMat && renderMat.interactive){
- vPointL = RenderTriangle.vPoint;
- vPointL.x = point.x;
- vPointL.y = point.y;
- vx0 = triangle.v0.vertex3DInstance;
- vx1 = triangle.v1.vertex3DInstance;
- vx2 = triangle.v2.vertex3DInstance;
- if(sameSide(vPointL,vx0,vx1,vx2)){
- if(sameSide(vPointL,vx1,vx0,vx2)){
- if(sameSide(vPointL,vx2,vx0,vx1)){
- return deepHitTest(triangle, vPointL, renderhitData);
- }
- }
- }
- }
- return renderhitData;
- }
-
- public function sameSide(point:Vertex3DInstance, ref:Vertex3DInstance, a:Vertex3DInstance, b:Vertex3DInstance):Boolean
- {
- Vertex3DInstance.subTo(b,a,resBA);
- Vertex3DInstance.subTo(point,a,resPA);
- Vertex3DInstance.subTo(ref, a, resRA);
- return Vertex3DInstance.cross(resBA, resPA)*Vertex3DInstance.cross(resBA, resRA) >= 0;
- }
-
- private function deepHitTest(face:Triangle3D, vPoint:Vertex3DInstance, rhd:RenderHitData):RenderHitData
- {
- var v0:Vertex3DInstance = face.v0.vertex3DInstance;
- var v1:Vertex3DInstance = face.v1.vertex3DInstance;
- var v2:Vertex3DInstance = face.v2.vertex3DInstance;
-
- var v0_x : Number = v2.x - v0.x;
- var v0_y : Number = v2.y - v0.y;
- var v1_x : Number = v1.x - v0.x;
- var v1_y : Number = v1.y - v0.y;
- var v2_x : Number = vPoint.x - v0.x;
- var v2_y : Number = vPoint.y - v0.y;
- var dot00 : Number = v0_x * v0_x + v0_y * v0_y;
- var dot01 : Number = v0_x * v1_x + v0_y * v1_y;
- var dot02 : Number = v0_x * v2_x + v0_y * v2_y;
- var dot11 : Number = v1_x * v1_x + v1_y * v1_y;
- var dot12 : Number = v1_x * v2_x + v1_y * v2_y;
-
- var invDenom : Number = 1 / (dot00 * dot11 - dot01 * dot01);
- var u : Number = (dot11 * dot02 - dot01 * dot12) * invDenom;
- var v : Number = (dot00 * dot12 - dot01 * dot02) * invDenom;
-
- var rv0_x : Number = face.v2.x - face.v0.x;
- var rv0_y : Number = face.v2.y - face.v0.y;
- var rv0_z : Number = face.v2.z - face.v0.z;
- var rv1_x : Number = face.v1.x - face.v0.x;
- var rv1_y : Number = face.v1.y - face.v0.y;
- var rv1_z : Number = face.v1.z - face.v0.z;
-
- var hx:Number = face.v0.x + rv0_x*u + rv1_x*v;
- var hy:Number = face.v0.y + rv0_y*u + rv1_y*v;
- var hz:Number = face.v0.z + rv0_z*u + rv1_z*v;
-
- //From interactive utils
- var uv:Array = face.uv;
- var uu0 : Number = uv[0].u;
- var uu1 : Number = uv[1].u;
- var uu2 : Number = uv[2].u;
- var uv0 : Number = uv[0].v;
- var uv1 : Number = uv[1].v;
- var uv2 : Number = uv[2].v;
-
- var v_x : Number = ( uu1 - uu0 ) * v + ( uu2 - uu0 ) * u + uu0;
- var v_y : Number = ( uv1 - uv0 ) * v + ( uv2 - uv0 ) * u + uv0;
-
- if( triangle.material )
- renderMat = face.material;
- else
- renderMat = face.instance.material;
-
- var bitmap:BitmapData = renderMat.bitmap;
- var width:Number = 1;
- var height:Number = 1;
- var dx:Number = 0;
- var dy:Number = 0;
-
- // MovieMaterial rect
- if( renderMat is MovieMaterial )
- {
- var movieRenderMat:MovieMaterial = renderMat as MovieMaterial;
- var rect:Rectangle = movieRenderMat.rect;
- if( rect )
- {
- dx = rect.x;
- dy = rect.y;
- width = rect.width;
- height = rect.height;
- }
- }
- else if( bitmap )
- {
- width = BitmapMaterial.AUTO_MIP_MAPPING ? renderMat.widthOffset : bitmap.width;
- height = BitmapMaterial.AUTO_MIP_MAPPING ? renderMat.heightOffset : bitmap.height;
- }
- //end from interactive utils
-
- rhd.displayObject3D = face.instance;
- rhd.material = renderMat;
- rhd.renderable = face;
- rhd.hasHit = true;
- position.x = hx;
- position.y = hy;
- position.z = hz;
- Matrix3D.multiplyVector( face.instance.world, position );
-
- rhd.x = position.x; //hx;
- rhd.y = position.y; //hy;
- rhd.z = position.z; //hz;
-
- rhd.u = v_x * width + dx;
- rhd.v = height - v_y * height + dy;
-
- return rhd;
- }
-
- public override function update():void{
- if (v0.x > v1.x) {
- if (v0.x > v2.x) maxX = v0.x;
- else maxX = v2.x;
- } else {
- if (v1.x > v2.x) maxX = v1.x;
- else maxX = v2.x;
- }
-
- if (v0.x < v1.x) {
- if (v0.x < v2.x) minX = v0.x;
- else minX = v2.x;
- } else {
- if (v1.x < v2.x) minX = v1.x;
- else minX = v2.x;
- }
-
- if (v0.y > v1.y) {
- if (v0.y > v2.y) maxY = v0.y;
- else maxY = v2.y;
- } else {
- if (v1.y > v2.y) maxY = v1.y;
- else maxY = v2.y;
- }
-
- if (v0.y < v1.y) {
- if (v0.y < v2.y) minY = v0.y;
- else minY = v2.y;
- } else {
- if (v1.y < v2.y) minY = v1.y;
- else minY = v2.y;
- }
-
- if (v0.z > v1.z) {
- if (v0.z > v2.z) maxZ = v0.z;
- else maxZ = v2.z;
- } else {
- if (v1.z > v2.z) maxZ = v1.z;
- else maxZ = v2.z;
- }
-
- if (v0.z < v1.z) {
- if (v0.z < v2.z) minZ = v0.z;
- else minZ = v2.z;
- } else {
- if (v1.z < v2.z) minZ = v1.z;
- else minZ = v2.z;
- }
-
- screenZ = (v0.z + v1.z + v2.z) / 3;
- area = 0.5 * (v0.x*(v2.y - v1.y) + v1.x*(v0.y - v2.y) + v2.x*(v1.y - v0.y));
-
- }
-
- public function fivepointcut(v0:Vertex3DInstance, v01:Vertex3DInstance, v1:Vertex3DInstance, v12:Vertex3DInstance, v2:Vertex3DInstance, uv0:NumberUV, uv01:NumberUV, uv1:NumberUV, uv12:NumberUV, uv2:NumberUV):Array
- {
- if (v0.distanceSqr(v12) < v01.distanceSqr(v2))
- {
- return [
- create(renderableInstance, renderer, v0, v01, v12, uv0, uv01, uv12),
- create(renderableInstance, renderer, v01, v1, v12, uv01, uv1, uv12),
- create(renderableInstance, renderer, v0, v12 , v2, uv0, uv12, uv2)];
- }
- else
- {
- return [
- create(renderableInstance, renderer, v0, v01, v2, uv0, uv01, uv2),
- create(renderableInstance, renderer, v01, v1, v12, uv01, uv1, uv12),
- create(renderableInstance, renderer, v01, v12, v2, uv01, uv12, uv2)];
- }
- }
-
-
-
- public override final function getZ(x:Number, y:Number, focus:Number):Number
- {
-
- ax = v0.x;
- ay = v0.y;
- az = v0.z;
- bx = v1.x;
- by = v1.y;
- bz = v1.z;
- cx = v2.x;
- cy = v2.y;
- cz = v2.z;
-
- if ((ax == x) && (ay == y))
- return az;
-
- if ((bx == x) && (by == y))
- return bz;
-
- if ((cx == x) && (cy == y))
- return cz;
-
- azf = az / focus;
- bzf = bz / focus;
- czf = cz / focus;
-
- faz = 1 + azf;
- fbz = 1 + bzf;
- fcz = 1 + czf;
-
- axf = ax*faz - x*azf;
- bxf = bx*fbz - x*bzf;
- cxf = cx*fcz - x*czf;
- ayf = ay*faz - y*azf;
- byf = by*fbz - y*bzf;
- cyf = cy*fcz - y*czf;
-
- det = axf*(byf - cyf) + bxf*(cyf - ayf) + cxf*(ayf - byf);
- da = x*(byf - cyf) + bxf*(cyf - y) + cxf*(y - byf);
- db = axf*(y - cyf) + x*(cyf - ayf) + cxf*(ayf - y);
- dc = axf*(byf - y) + bxf*(y - ayf) + x*(ayf - byf);
-
- return (da*az + db*bz + dc*cz) / det;
- }
-
- public override final function quarter(focus:Number):Array
- {
- if (area < 20)
- return null;
-
- v01 = Vertex3DInstance.median(v0, v1, focus);
- v12 = Vertex3DInstance.median(v1, v2, focus);
- v20 = Vertex3DInstance.median(v2, v0, focus);
- uv01 = NumberUV.median(uv0, uv1);
- uv12 = NumberUV.median(uv1, uv2);
- uv20 = NumberUV.median(uv2, uv0);
-
- return [
- create(renderableInstance, renderer, v0, v01, v20, uv0, uv01, uv20),
- create(renderableInstance, renderer, v1, v12, v01, uv1, uv12, uv01),
- create(renderableInstance, renderer, v2, v20, v12, uv2, uv20, uv12),
- create(renderableInstance, renderer, v01, v12, v20, uv01, uv12, uv20)
- ];
- }
-
- /*
- Don't touch these - needed for quad
- */
-
- private var ax:Number;
- private var ay:Number;
- private var az:Number;
- private var bx:Number;
- private var by:Number;
- private var bz:Number;
- private var cx:Number;
- private var cy:Number;
- private var cz:Number;
- private var azf:Number;
- private var bzf:Number;
- private var czf:Number;
- private var faz:Number;
- private var fbz:Number;
- private var fcz:Number;
- private var axf:Number;
- private var bxf:Number;
- private var cxf:Number;
- private var ayf:Number;
- private var byf:Number;
- private var cyf:Number;
- private var det:Number;
- private var da:Number;
- private var db:Number;
- private var dc:Number;
- private var au:Number;
- private var av:Number;
- private var bu:Number;
- private var bv:Number;
- private var cu:Number;
- private var cv:Number;
-
- private var v01:Vertex3DInstance;
- private var v12:Vertex3DInstance;
- private var v20:Vertex3DInstance;
- private var uv01:NumberUV;
- private var uv12:NumberUV;
- private var uv20:NumberUV;
-
- }
- }