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题 目:用笛卡尔公式画出的一颗心状图 代码: var Height = Stage.height; var pen = _root.createEmptyMovieClip("pen_mc", 2); var ib = 0; var End = 90; this.onEnterFrame = function() { if (ibfor (j=0; jr = Math.PI/45*ib*(1-Math.sin(Math.PI/45*j))*18; x = r*Math.cos(Math.PI/45*j)*Math.sin(Math.PI/45*ib) Width/2; y = -r*Math.sin(Math.PI/45*j) Height/4; drawDot(pen, int(x), int(y), 0x00FF00); //drawCircle(pen, int(x), int(y), 2, 0x000000, 0x00FF00, 0); } ib ; } else { delete this.onEnterFrame; } }; /*òòa±óforì×-FLASHì3á|ᣣùòóonEnterFrameá... for (i=0; i<90; i ) { for (j=0; j<90; j ) { r = Math.PI/45*i*(1-Math.sin(Math.PI/45*j))*18; x = r*Math.cos(Math.PI/45*j)*Math.sin(Math.PI/45*i) AppletWidth/2; y = -r*Math.sin(Math.PI/45*j) AppletHeight/4; drawDot(pen, int(x), int(y), 0x00FF00); //drawCircle(pen, int(x), int(y), 2, 0x000000, 0x00FF00, 0); } } */ function drawDot(pen, x, y, DColor) { pen.moveTo(x-0.5, y); pen.lineStyle(2, DColor, 100); pen.lineTo(x 0.5, y); }
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