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// ÓÃÒªÐýתµ½µÄ x, y ×ø±êÌæ»» mouseX, mouseY
dx = mouseX - sprite.x;
dy = mouseY - sprite.y;
sprite.rotation = Math.atan2(dy, dx) * 180 / Math.PI;
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// ½« x, y »òÆäËüÊôÐÔ¸³Öµ¸ø Sprite ӰƬ»òӰƬ¼ô¼­£¬
// ×÷Ϊ»æÍ¼×ø±ê£¬µÈµÈ¡£
public function onEnterFrame(event:Event){
value = center + Math.sin(angle) * range;
angle += speed;
}
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// ½« x, y »òÆäËüÊôÐÔ¸³Öµ¸ø Sprite ӰƬ»òӰƬ¼ô¼­£¬
// ×÷Ϊ»æÍ¼×ø±ê£¬µÈµÈ¡£
public function onEnterFrame(event:Event){
xposition = centerX + Math.cos(angle) * radius;
yposition = centerY + Math.sin(angle) * radius;
angle += speed;
}
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// ½« x, y »òÆäËüÊôÐÔ¸³Öµ¸ø Sprite ӰƬ»òӰƬ¼ô¼­£¬
// ×÷Ϊ»æÍ¼×ø±ê£¬µÈµÈ¡£
public function onEnterFrame(event:Event){
xposition = centerX + Math.cos(angle) * radiusX;
yposition = centerY + Math.sin(angle) * radiusY;
angle += speed;
}
»ñµÃÁ½µã¼äµÄ¾àÀ룺
// x1, y1 ºÍ x2, y2 ÊÇÁ½¸öµã
// Ò²¿ÉÒÔÊÇ Sprite / MovieClip ×ø±ê£¬Êó±ê×ø±ê£¬µÈµÈ¡£
dx = x2 – x1;
dy = y2 – y1;
dist = Math.sqrt(dx*dx + dy*dy);
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1.color24 = red < < 16 | green << 8 | blue;
2.color32 = alpha << 24 | red << 16 | green << 8 | blue;
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1.red = color24 >> 16;
2.green = color24 >> 8 & 0xFF;
3.blue = color24 & 0xFF;
4.alpha = color32 >> 24;
5.red = color32 >> 16 & 0xFF;
6.green = color32 >> 8 & 0xFF;
7.blue = color232 & 0xFF;
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1.// xt, yt ÊÇÎÒÃÇÏëÒª´©¹ýµÄÒ»µã
2.// x0, y0 ÒÔ¼° x2, y2 ÊÇÇúÏßµÄÁ½¶Ë
3.x1 = xt * 2 – (x0 + x2) / 2;
4.y1 = yt * 2 – (y0 + y2) / 2;
5.moveTo(x0, y0);
6.curveTo(x1, y1, x2, y2);
½ÇËÙ¶Èת»»Îª x, y ËÙ¶È£º
1.vx = speed * Math.cos(angle);
2.vy = speed * Math.sin(angle);
½Ç¼ÓËÙ¶È£¨×÷ÓÃÓÚÎïÌåÉ쵀 force£©×ª»»Îª x, y ¼ÓËÙ¶È£º
1.ax = force * Math.cos(angle);
2.ay = force *


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