[QuickBox2D] Soft Object #3

centerを多角形にして周りをジェルで覆うイメージにしてみた

by Kay 15 Mar 2010

• Forked from Kay's [QuickBox2D] Soft Object #2
• Diff: 44
• Related works: 20
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/**
 * Copyright Kay ( http://wonderfl.net/user/Kay )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/lgDZ
 */

// forked from Kay's [QuickBox2D] Soft Object #2
// forked from Kay's forked from: QuickBox2D sample
// forked from mash's QuickBox2D sample
/*
 * centerを多角形にして周りをジェルで覆うイメージにしてみた
 */
package {
    import flash.display.*;
    import com.actionsnippet.qbox.*;
    import flash.geom.*;
    import flash.events.*;

    public class FlashTest extends MovieClip {
    		private const SW:Number = stage.stageWidth;
    		private const SH:Number = stage.stageHeight;
        private const radius:Number = 0.2;
        private var inner:Array = new Array();
        private var outer:Array = new Array();
        private const jHz:Number = 100;
        private const jDr:Number = 100;
        private const nColor:int = 0xff0000;
        public function FlashTest() {
            stage.frameRate = 60;
            var sim:QuickBox2D = new QuickBox2D(this, { debug:false, gravityX:0, gravityY:10 });
            sim.createStageWalls();
            var center:Point = new Point(SW/2/30, SH/2/30);
            var nRadius:Number = 2;
	        // Outer
            for (var o:int = 0; o < 12; o++) {
            		nR = Math.PI*2/12*o;
	            var dot:QuickObject = sim.addCircle({x:center.x+nRadius*Math.cos(nR), y:center.y+nRadius*Math.sin(nR), radius:radius, fillAlpha:0, lineAlpha:0 });
	            outer.push(dot);
	            if (o > 0) {
		            sim.addJoint({a:outer[o-1].body, b:dot.body, frequencyHz:jHz, dampingRatio:jDr});
	            }
            }
            sim.addJoint({a:outer[11].body, b:outer[0].body, frequencyHz:jHz, dampingRatio:jDr});
            //Inner
	        for (var i:int = 0; i < 6; i++) {
            		var nR:Number = Math.PI*2/6*i;
            		var p:Point = new Point(nRadius*0.75*Math.cos(nR), nRadius*0.75*Math.sin(nR));
	            inner.push(p);
            }
            // Center
	        var centerPoly:QuickObject = sim.addPoly({x:center.x, y:center.y, verts:[[inner[0].x,inner[0].y, inner[1].x,inner[1].y, inner[2].x,inner[2].y, inner[3].x,inner[3].y, inner[4].x,inner[4].y, inner[5].x,inner[5].y]], fillAlpha:0, lineAlpha:0});
            
            // Outer
	        for (i = 0; i < 6; i++) {
	            sim.addJoint({a:outer[i*2+1].body, b:centerPoly.body, x2:inner[i].x+center.x, y2:inner[i].y+center.y, frequencyHz:jHz, dampingRatio:jDr});
	            sim.addJoint({a:outer[i*2].body, b:centerPoly.body, x2:inner[i].x+center.x, y2:inner[i].y+center.y, frequencyHz:jHz, dampingRatio:jDr});
	            sim.addJoint({a:outer[(i*2-1+12)%12].body, b:centerPoly.body, x2:inner[i].x+center.x, y2:inner[i].y+center.y, frequencyHz:jHz, dampingRatio:jDr});
	        }
            
            	sim.start();
			sim.mouseDrag();
			
			addEventListener(Event.ENTER_FRAME, xFake);                       
        }
        private function xFake(e:Event):void {
        		graphics.clear();
        		graphics.lineStyle(10,nColor);
        		graphics.beginFill(nColor);
        		var sPos:Point = new Point();
        		for (var i:int = 0; i < 12; i++) {
	        		var circle:QuickObject = outer[i];
	        		if (i == 0) {
	        			sPos = new Point(circle.x*30, circle.y*30);
	 	       		graphics.moveTo(sPos.x, sPos.y);
	        		} else {
		        		graphics.lineTo(circle.x*30,circle.y*30);
	        		}
        		}
        		graphics.lineTo(sPos.x, sPos.y);
        		graphics.endFill();
        }
    }
}