function DrawDottedLine(targetMC,
linewidth, fromX, fromY, toX, toY) {
// targetMC: 目标MovieClip德InstanceName;
// linewidth: 线宽;
// fromX, fromY: 从(fromX, fromY)处开始画;
// toX, toY: 画到(toX, toY)处;
var x, y;
eval(targetMC).lineStyle(lineWidth, 0x000000, 100);
// 线的颜色是黑色(0x000000)
eval(targetMC).moveTo(fromX, fromY);
x = fromX;
y = fromY;
while (x<toX) {
x = x+4/(Math.sqrt((toY-fromY)*
(toY-fromY)+(toX-fromX)*(toX-fromX)))*(toX-fromX);
y = y+4/(Math.sqrt((toY-fromY)*
(toY-fromY)+(toX-fromX)*(toX-fromX)))*(toY-fromY);
eval(targetMC).lineTo(x, y);
x = x+4/(Math.sqrt((toY-fromY)*
(toY-fromY)+(toX-fromX)*(toX-fromX)))*(toX-fromX);
y = y+4/(Math.sqrt((toY-fromY)*
(toY-fromY)+(toX-fromX)*(toX-fromX)))*(toY-fromY);
eval(targetMC).moveTo(x, y);
}
}
createEmptyMovieClip("obj",1);//建一空影片
DrawDottedLine("_root.obj", 1, 10, 10, 200, 300);
//调用函数
从场景的左上角到鼠标画虚线
代码：
x = 0;
y = 0;//场景左上角的坐标
l = 0;
mx = _root._xmouse;
my = _root._ymouse;//鼠标的坐标
ml = Math.sqrt(mx*mx+my*my);//三角形的斜边长
_root.moveto(0, 0);//画线的起点为场景左上角的坐标
_root.linestyle(0.1, 0x000000, 100);
// 下面用三角函数求出每一段虚线的端点坐标，
然后用循环重复画一条短线和空格。直到线的终点位置。
while (l<ml) {
l += 5;
// 短线的长
x = l*mx/ml;
y = l*my/ml;
_root.lineto(x, y);
// 将绘图点移动到相当于短线长的，且与短线在同一直线的位置。即一个空格
l += 5;
x = l*mx/ml;
y = l*my/ml;
_root.moveto(x, y);
}
不错的画线函数，自定义点、线的样式、填充
function Shape() {
this.points = [];
this.lines = false;
tthis.filled = false;
tthis.lineStyle = null;
this.t = eval(_target);
}
Shape.prototype.addPoint = function(x, y) {
this.points[this.points.length] = {x:x, y:y};
};
Shape.prototype.removePoint = function() {
this.points.pop();
};
Shape.prototype.draw = function(w, c, a) {
if (this.points.length>1) {
this.lineStyle = {w:w, c:c,a:a};
this.t.lineStyle(w, c, a);var i = 0;
var l = this.points.length;
while (i<l) {
this.t.lineTo(this.points[i].
x,this.points[i].y);
++i;
}
this.lines = true;
}
};
Shape.prototype.fill = function(c, a) {
if (this.points.length>1) {
if (this.lines) {
this.clear();
this.t.lineStyle(this.lineStyle.w,
this.lineStyle.c, this.lineStyle.a);
} else {
this.t.lineStyle(0,0xFFFFFF, 0);
if (this.filled){
this.clear();
}
}
this.t.beginFill(c, a);
var i = 0;
var l = this.points.length;
while (i<l) {
this.t.lineTo(this.points[i].x,this.points[i].y);
++i;
}
this.t.endFill();
this.filled = true;
}
};
Shape.prototype.getX = function() {
if (this.points.length) {
return this.points[this.points.length-1].x;
}
};
Shape.prototype.getY = function() {
if (this.points.length) {
return this.points[this.points.length-1].y;
}
};
g = new Shape();
g.addPoint(0, 100);
g.addPoint(100, 100);
g.addPoint(100, 0);
g.addPoint(0, 0);
g.fill(0x339900, 100);
g.draw(5, 0x000000, 100);
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