三角形三邊关系的演示flashas30.doc

在写着代码之前，元件库里面还需要建三个圆MC影片，把他们拖到舞台并分别命名为yuan1_mc,yuan2_mc,yuan3_mc。做这个东西意在演示三角形的三边关系（两边之和大于第三遍），做好以后三条边是可以随意拖动的哦。 下面的几个图片是演示时候的截图（这里是截图，不是flash，所以红色的圈圈在这里没办法拖动的） //变量的定义 var con:Sprite=new Sprite(); stage.addChild(con); var xianduan12:Shape=new Shape(); var xianduan13:Shape=new Shape(); var xianduan23:Shape=new Shape(); var pd:Boolean; var ab:Number; var ac:Number; var bc:Number; var a4:int; var a5:int; var a6:int; //让三个圆mc处于con容器的最表面，放置后期拖动时候被直线阻挡一部分触感区！ con.addChild(yuan1_mc); con.addChild(yuan2_mc); con.addChild(yuan3_mc); xian12(); xian13(); xian23(); //线段12的绘制 function xian12():void{ xianduan12.graphics.lineStyle(2,0xFF6600,1); xianduan12.graphics.moveTo(yuan1_mc.x,yuan1_mc.y); xianduan12.graphics.lineTo(yuan2_mc.x,yuan2_mc.y); con.addChildAt(xianduan12,0); ab=Math.sqrt(Math.pow(yuan2_mc.x-yuan1_mc.x,2)+Math.pow(yuan2_mc.y-yuan1_mc.y,2))/5; a4=ab+ac; a5=ab+bc; a6=ac+bc; t1_txt.text=AB=+Math.round(ab); t4_txt.text=AB+AC=+a4; t5_txt.text=AB+BC=+a5; t6_txt.text=AC+BC=+a6; } //线段13的绘制 function xian13():void{ xianduan13.graphics.lineStyle(2,0x33FF00,1); xianduan13.graphics.moveTo(yuan1_mc.x,yuan1_mc.y); xianduan13.graphics.lineTo(yuan3_mc.x,yuan3_mc.y); con.addChildAt(xianduan13,0); ac=Math.sqrt(Math.pow(yuan3_mc.x-yuan1_mc.x,2)+Math.pow(yuan3_mc.y-yuan1_mc.y,2))/5; a4=ab+ac; a5=ab+bc; a6=ac+bc; t2_txt.text=AC=+Math.round(ac); t4_txt.text=AB+AC=+a4; t5_txt.text=AB+BC=+a5; t6_txt.text=AC+BC=+a6; } //线段23的绘制 function xian23():void{ xianduan23.graphics.lineStyle(2,0x9900FF,1); xianduan23.graphics.moveTo(yuan2_mc.x,yuan2_mc.y); xianduan23.graphics.lineTo(yuan3_mc.x,yuan3_mc.y); con.addChildAt(xianduan23,0); bc=Math.sqrt(Math.pow(yuan3_mc.x-yuan2_mc.x,2)+Math.pow(yuan3_mc.y-yuan2_mc.y,2))/5; a4=ab+ac; a5=ab+bc; a6=ac+bc; t3_txt.text=BC=+Math.round(bc); t4_txt.text=AB+AC=+a4; t5_txt.text=AB+BC=+a5; t6_txt.text=AC+BC=+a6; } //鼠标DOWN监听 yuan1_mc.addEventListener(MouseEvent.MOUSE_DOWN,fun1) function fun1(e:MouseEvent):void{ pd=true; yuan1_mc.startDrag(); stage.a