Flash8中画线函数（实线、虚线、波浪线）

注：波浪线的实现是利用正弦函数

使用方法：DrawLine(目标影片剪辑,线的开始点,线的结束点,线的样式)

var p1:Point = new Point(100,100);

var p2:Point = new Point(300,300);

DrawLine(mc1,p1,p2,"虚线")

 

import flash.geom.Point;function DrawLine (target:MovieClip, fromPoint:Point, endPoint:Point, lineType:String):Void {/********************* * target:目标影片剪辑 * fromPoint: 开始点（虚拟圆的圆心） * endPoint: 鼠标的当前位置（由fromPoint到endPoint构成一个虚拟圆） * r: 半径（虚拟圆的半径） * z: 鼠标当前位置相对虚拟圆的角度 * lineType: 线的类型，实线、虚线、波浪线 ********************/var r:Number = new Number (0);r = Math.sqrt (Math.pow ((endPoint.x - fromPoint.x), 2) + Math.pow ((endPoint.x - fromPoint.y), 2));var z:Number = new Number (0);z = Math.atan2 ((endPoint.y - fromPoint.y), (endPoint.x - fromPoint.x)) * 180 / Math.PI;//target.clear ();target.lineStyle (_global.lineWidth, _global.lineColor, 100);// target.moveTo (fromPoint.x, fromPoint.y);switch (lineType) {case "波浪线" :// 画出波浪线样式for (var i = 0; i <= endPoint.x; i++) {px = fromPoint.x + i;py = fromPoint.y + Math.sin (100 * i);target.lineTo (px, py);if (px > endPoint.x) {return;}}break;case "虚线" :// 画出虚线样式 var lineSize:Number = 8;// 从右向左画虚线var tempPoint:Point = new Point ();if (fromPoint.x > endPoint.x) {tempPoint = fromPoint;fromPoint = endPoint;endPoint = tempPoint;}target.moveTo (fromPoint.x, fromPoint.y);//var p:Point = new Point (fromPoint.x, fromPoint.y);while (p.x < endPoint.x) {p.x = p.x + lineSize / r * (endPoint.x - fromPoint.x);p.y = p.y + lineSize / r * (endPoint.y - fromPoint.y);target.lineTo (p.x, p.y);p.x = p.x + lineSize / r * (endPoint.x - fromPoint.x);p.y = p.y + lineSize / r * (endPoint.y - fromPoint.y);target.moveTo (p.x, p.y);}break;default :target.lineTo (endPoint.x, endPoint.y);break;}}