【二维图形技术】上机复习资料.doc

二维图形技术复习资料 By BW1.飞机沿轨迹运动import flash.events.MouseEvent;stop();plane.stop();Object(this).Butn.addEventListener(MouseEvent.CLICK,airplanePlay);function airplanePlay(e:MouseEvent)gotoAndPlay(2);plane.play();引导层是轨迹，飞机是被引导层 选中飞机时的样子2.计算两点距离import includes.CPoint;var point1:CPoint=new CPoint(12,30,50);var point2:CPoint=new CPoint(2,3,5);trace(点1的坐标(,point1.xx,point1.yy,point1.zz,);trace(点2的坐标(,point2.xx,point2.yy,point2.zz,);function Distance(p1:CPoint,p2:CPoint):Numbervar xvalue=p1.xx-p2.xx;var yvalue=p1.yy-p2.yy;var zvalue=p1.zz-p2.zz;var dis:Number=Math.sqrt(xvalue*xvalue+yvalue*yvalue+zvalue*zvalue);return dis;var disvalue=Distance(point1,point2);trace(the distance of between p1 and p2 is,disvalue);3.简单数据类型1var num:int=6789 /定义数字var temp:int=num /取得数字的拷贝var a:int=temp/1000 /得到千位数temp=temp-a*1000 /去掉千位var b:int=temp/100 /得到百位数temp=temp-b*100 /去掉百位var c:int=temp/10 /得到十位数temp=temp-c*10 /去掉十位var d:int=temp /得到个位数trace(a,b,c,d)4.简单数据类型2var num:int=6789 /定义数字var str=String(num) /数字转换为字符串var a:int=str.charAt(0) /取得索引0处的字符即6var b:int=str.charAt(1) /取得索引1处的字符即7var c:int=str.charAt(2) /取得索引2处的字符即8var d:int=str.charAt(3) /取得索引3处的字符即9trace(a,b,c,d) /输出数位5.按钮事件import flash.events.MouseEvent;Object(this).left_button.addEventListener(MouseEvent.CLICK,movex);/定义movex函数var speed:int=5;function movex(e:MouseEvent):voidObject(this).car_movieclip.x-=speed;Object(this).right_button.addEventListener(MouseEvent.CLICK,movexright);function movexright(e:MouseEvent) Object(this).car_movieclip.x+=speed;/ trace(Object(this).car_movieclip.x);if(Object(this).car_movieclip.xstage.stageWidth)Object(this).car_movieclip.x=-250;/trace(stage.stageWidth,stage.stageHeight);Object(this).alpha2_button.addEventListener(MouseEvent.CLICK,reducealpha);function reducealpha(e:MouseEvent)if(Object(this).car_movieclip.alpha0)Object(this).car_movieclip.alpha-=0.1;elseObject(this).car_movieclip.alpha=1;Object(this).alpha1_button.addEventListener(MouseEvent.CLICK,addalpha);function addalpha(e:MouseEvent)if(Object(this).car_movieclip.alpha1)Object(this).car_movieclip.alpha+=0.1;Object(this).rotation_button.addEventListener(MouseEvent.CLICK,rotationx);function rotationx(e:MouseEvent)Object(this).car_movieclip.rotationX+=15;Object(this).visible_button.addEventListener(MouseEvent.CLICK,hidemovieclip);function hidemovieclip(e:MouseEvent)if(Object(this).car_movieclip.visible=true)Object(this).car_movieclip.visible=false;elseObject(this).car_movieclip.visible=true; 选中汽车alpha+ 的名字是 alpha1_buttonalpha- 的名字是 alpha2_buttonhide 的名字是 visible_button6.创建影片剪辑类import flash.display.MovieClip;import flash.events.MouseEvent;var i:int;for(i=1;i-Object(this).plane_mc.width)Object(this).plane_mc.x-=speed;else Object(this).plane_mc.x=stage.stageWidth;if(keynumber=KEY_RIGHT)if(Object(this).plane_mc.xy)return x;return y;trace(Max(45,80);function onClick(e:MouseEvent)mc.x+=5;mc.addEventListener(click,onClick);function traceMsg():void trace(this is a function); function refeFunc(f:Function):void f(); refeFunc(traceMsg);var a:int= 1;trace(函数调用前，实参a=+a);test(a);trace(函数调用后，实参a=+a);function test(x):void var y:int;x += 5;trace(调用函数中，形参x=+x);/建立一个对象var person:Object = new Object()/动态创建属性ageperson.age=20;trace(函数调用前，实参person.age=+person.age);test1(person);trace(函数调用后，实参person.age=+person.age);function test1(per:Object):void per.age = 10;/修改对象的age属性trace(函数调用中，形参per.age=+per.age);function test2(y:int,x:int=0):Boolean return xy; trace(test2(20); trace(test2(15,5); /*var speed:int=10;trace(this.speed);*/var speed:Number=5onMove()function onMove()trace(this.speed)/5var speed:Number=6trace(speed)/6trace(this.speed)/5 图层二其实就呢个蓝色的框框，就是mc啦，还是个影片剪辑14.函数定义第一个as: function area(r:*):Number var b:Boolean=r is Number; if(!b) return NaN; return Math.PI*r*r;var a=area(10.5);trace(a);trace(area(7);trace(area(str);第二个as:function btnCon(obj, frameNum) :voidif (this.currentFrame = frameNum) obj.alpha =.5obj.enabled = false; else obj.alpha =1obj.enabled = true;btnCon(backBtn,1);btnCon(forwardBtn,this.totalFrames);蓝色按钮：backBtn褐色按钮: forwardBtn15.绘图函数this.graphics.lineStyle(5)this.graphics.moveTo(250,0)this.graphics.lineTo(350,100)root.graphics.lineStyle(10)root.graphics.moveTo(350,0)root.graphics.lineTo(450,100)/画线var sp1:Shape=new Shape();this.addChild(sp1)drawLine(sp1.graphics)function drawLine(g:Graphics):void with (g) lineStyle(3);moveTo(200,0);curveTo(400,0,300,100);/绘制矩形var sp:Shape=new Shape();this.addChild(sp)drawrect(sp.graphics)function drawrect(g:Graphics):void with (g) beginBitmapFill(new Photo(0,0)drawRect(0,0,187,365)/绘制填充颜色var sp2:Shape=new Shape();this.addChild(sp2);drawrectwithcolor(sp2.graphics);function drawrectwithcolor(g:Graphics):void with (g) beginFill(0xFF5599)drawRect(230,200,200,150)16.按键显示动画键盘输入一大堆乱七八糟的字幕会在屏幕上跳来跳去stage.addEventListener(KeyboardEvent.KEY_DOWN,charpaly);function charpaly(e:KeyboardEvent):voidvar keycode:uint=e.charCode;var str:String=String.fromCharCode(keycode);var txt:TextField=new TextField();txt.text=str;txt.x=Math.random()*550;txt.y=Math.random()*300;txt.addEventListener(Event.ENTER_FRAME,txtmove);this.addChild(txt);function txtmove(e:Event):voidvar txt1:TextField=e.target;txt1.y+=(Math.random()*550-txt1.y)/10;if(txt1.y1)txt1.removeEventListener(Event.ENTER_FRAME,txtmove);this.removeChild(txt1);17.键盘事件+enterframe动画W A S D控制图形上下左右运动const KEY_A:uint=65;const KEY_D:uint=68;const KEY_S:uint=83;const KEY_W:uint=87;var key:Object=new Objectvar speed:Number=2stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDown)stage.addEventListener(KeyboardEvent.KEY_UP,keyUp)this.addEventListener(Event.ENTER_FRAME,test)function isDown(keyCode:uint):Booleanreturn keykeyCode?true:false/按下事件侦听器function keyDown(e:KeyboardEvent):voidkeye.keyCode=true/释放事件侦听器function keyUp(e:KeyboardEvent):voiddelete keye.keyCodefunction test(e:Event):voidMC 也就是那个影片剪辑的圆啦if(keyKEY_A)mc.x-=speedif(keyKEY_D)mc.x+=speedif(keyKEY_W)mc.y-=speedif(keyKEY_S)mc.y+=speed18.海盗射击转动鼠标控制手的方向，单机鼠标发射一个子弹var loop:Timer=new Timer(30);loop.addEventListener(TimerEvent.TIMER,armRotation);loop.start();function armRotation(e:TimerEvent)/var hand:MovieClip=arm;var radian=getRadian(arm.x,arm.y,this.mouseX,this.mouseY);arm.rotation=radian*180/Math.PI;trace(arm.x,arm.y);trace(stage.mouseX,stage.mouseY);/子弹的初始位置var bulletx:Number=arm.x;var bullety:Number=arm.y;/子弹运动速度，相当图8.37中的AB长度var speed:Number=5stage.addEventListener(MouseEvent.CLICK,shoot)function shoot(e:MouseEvent):void/根据鼠标坐标和初始位置计算弧度，相当图8.35中的角BACvar radian:Number=getRadian(bulletx,bullety,this.mouseX,this.mouseY)/从库中创建子弹var bullet:Bullet=new Bullet()/初始化子弹位置bullet.x=bulletx+Math.cos(radian)*arm.width;bullet.y=bullety+Math.sin(radian)*arm.height;/根据余弦函数计算子弹的x速度，相当于计算图8.35中的ACbullet.spdx=Math.cos(radian)*speed/根据正弦函数计算子弹的y速度