package {
import flash.display.Sprite;
[SWF(width="480",height="360",backgroundColor=0xffffff)]
public class FlashTest extends Sprite {
public function FlashTest() {
var spr:Sprite=new Sprite();
spr.x=240;
spr.y=180;
addChild(spr);
var g:Graphics3D=new Graphics3D(spr);
g.lineStyle(50,0);
g.moveTo(240,-180,8191);
g.curveTo(800,50,0,-150,100,0);
g.moveTo(-200,-300,8191);
g.curveTo(-900,-10,0,200,180,0);
}
}
}
import flash.display.Sprite;
import flash.display.Graphics;
class Graphics3D{
private var g:Graphics;
private var thickness:Number=0;
private var lineColor:uint=0;
private var lineAlpha:Number=1.0;
private var startX:Number=0;
private var startY:Number=0;
private var startZ:Number=0;
public var vs:Number=-200;
public function Graphics3D(target:Sprite,vs:Number=-200){
this.g=target.graphics;
this.vs=vs;
}
public function clear():void{
g.clear();
}
public function lineStyle(thickness:Number,color:uint=0,alpha:Number=1.0):void{
this.thickness=thickness;
this.lineColor=color;
this.lineAlpha=alpha;
}
public function moveTo(x:Number,y:Number,z:Number):void{
this.startX=x;
this.startY=y;
this.startZ=z;
}
public function lineTo(x:Number,y:Number,z:Number):void{
//g.lineStyle(undefined);
var p:Number=-vs/(-vs+this.startZ);
g.beginFill(lineColor,lineAlpha);
var r1:Number=this.thickness*p/2;
var startX:Number=this.startX*p;
var startY:Number=this.startY*p;
g.drawCircle(startX,startY,r1);
g.endFill();
g.beginFill(lineColor,lineAlpha);
p=-vs/(-vs+z);
var r2:Number=thickness*p/2;
var endX:Number=x*p;
var endY:Number=y*p;
g.drawCircle(endX,endY,r2);
g.endFill();
g.beginFill(lineColor,lineAlpha);
var s:Number=endX-startX;
var t:Number=endY-startY;
var u:Number=Math.asin((r1-r2)/Math.sqrt(s*s+t*t));
var v:Number=Math.atan2(s,t);
var a1:Number=u-v;
var a2:Number=Math.PI-u-v;
//g.lineStyle(0,0xff0000);
g.moveTo(r1*Math.cos(a1)+startX,r1*Math.sin(a1)+startY);
g.lineTo(r1*Math.cos(a2)+startX,r1*Math.sin(a2)+startY);
g.lineTo(r2*Math.cos(a2)+endX,r2*Math.sin(a2)+endY);
g.lineTo(r2*Math.cos(a1)+endX,r2*Math.sin(a1)+endY);
g.endFill();
moveTo(x,y,z);
}
public function curveTo(controlX:Number,controlY:Number,controlZ:Number,anchorX:Number,anchorY:Number,anchorZ:Number):void{
var startX:Number=this.startX;
var startY:Number=this.startY;
var startZ:Number=this.startZ;
for(var i:Number=0;i<=1;i+=0.01){
var j:Number=1-i;
var tX:Number=j*(j*startX+i*controlX)+i*(j*controlX+i*anchorX);
var tY:Number=j*(j*startY+i*controlY)+i*(j*controlY+i*anchorY);
var tZ:Number=j*(j*startZ+i*controlZ)+i*(j*controlZ+i*anchorZ);
lineTo(tX,tY,tZ);
}
}
}