用AS畫(huà)圖，自定義多邊形及圓形_Flash教程

推薦：FLASH AS實(shí)現(xiàn)馬賽克效果
動(dòng)畫(huà)效果：點(diǎn)擊這里下載源文件一般實(shí)現(xiàn)馬賽克有2種辦法,采用的都是遍歷圖像上的像素,對(duì)相隔一定范圍內(nèi)的像素填充同一顏色,只不過(guò)采樣的顏色位置不同,有

這兩天在研究關(guān)于as畫(huà)圖的問(wèn)題,經(jīng)過(guò)一番折騰后終于是出來(lái)了,(部分代碼來(lái)源于 programming macromedia flash mx)

AS:

MovieClip.prototype.drawRegAng = function(x, y, r, num, rotation) {
/*參數(shù)說(shuō)明：x,y:多邊形的中心坐標(biāo);r:多邊形半徑;num:多邊形邊數(shù);最后一個(gè)是旋轉(zhuǎn)角度*/
var tAngle = (rotation-90)*Math.PI/180;
var angle = 2*Math.PI/num;
var sin = Math.sin;
var cos = Math.cos;
num ;
this.moveTo(x r*cos(tAngle), y r*sin(tAngle));
while (num--) {
tAngle = angle;
this.lineTo(x r*cos(tAngle), y r*sin(tAngle));
}
};
this.createEmptyMovieClip("loader", 100);
loader.lineStyle(0, 0x000000);
//初始化變量
var r=50,num=5,rota=0;
var x = Stage.width/2, y = Stage.height/2;
loader.drawRegAng(x, y, r, num, rota);

numChange=new Object();
numChange.change=function(evt){
num=evt.target.value;
}
rChange=new Object();
rChange.change=function(evt){
r=evt.target.value;
}
rotaChange=new Object();
rotaChange.change=function(evt){
rota=evt.target.value;
}
bian.addEventListener("change",numChange);
jiaodu.addEventListener("change",rotaChange);
banjing.addEventListener("change",rChange);
function clicked(){
loader.clear();
loader.lineStyle(0, 0x000000);
loader.drawRegAng(x, y, r, num, rota);
}
rSubmit.addEventListener("click",clicked);

圓形：

AS:
MovieClip.prototype.drawOval=function(x,y,rx,ry){
this.moveTo(x rx,y);
this.curveTo(rx x,0.4142*ry y,0.7071*rx x,0.7071*ry y);
this.curveTo(0.4142*rx x,ry y,x,ry y);
this.curveTo(-0.4142*rx x,ry y,-0.7071*rx x,0.7071*ry y);
this.curveTo(-rx x,0.4142*ry y,-rx x,y);
this.curveTo(-rx x,-0.4142*ry y,-0.7071*rx x,-0.7071*ry y);
this.curveTo(-0.4142*rx x,-ry y,x,-ry y);
this.curveTo(0.4142*rx x,-ry y,0.7071*rx x,-0.7071*ry y);
this.curveTo(rx x,-0.4142*ry y,rx x,y);
}

分享：如何應(yīng)用Flash制作標(biāo)準(zhǔn)的loading？
前言:網(wǎng)絡(luò)中的swf影片是可以實(shí)現(xiàn)邊下載邊播放的，由于受到當(dāng)前網(wǎng)絡(luò)傳輸?shù)闹萍s，對(duì)于大容量的影片，這種實(shí)時(shí)播放并不理想。為避免受眾尷尬的等待，flash制作人員