forked from: Light Paint - forked from: LineThing
マウスの軌跡に沿った曲線の謎を知りたくてForkしてみる
*
/**
* Copyright esukei ( http://wonderfl.net/user/esukei )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/hLT3
*/
// forked from kto12's Light Paint - forked from: LineThing
// forked from milkmidi's LineThing
/**
* マウスの軌跡に沿った曲線の謎を知りたくてForkしてみる
*
*/
package {
import flash.display.Graphics;
import flash.display.Sprite;
import flash.events.Event;
import flash.utils.getTimer;
[SWF(frameRate = "8", backgroundColor = "#000000")]
public class LineThing extends Sprite{
private var points:Array = new Array();
private var draw_mc:Sprite = new Sprite();
private var line_mc:Sprite = new Sprite();
//_________________________Constructor
public function LineThing() {
this.addChild(line_mc);
this.addChild(draw_mc);
this.addEventListener(Event.ENTER_FRAME,onEventEnterFrame);
}
private function onEventEnterFrame(e:Event):void {
draw_mc.graphics.clear();
draw_mc.graphics.lineStyle(1, 0x0000FF);
draw_mc.alpha = 1;
line_mc.graphics.clear();
line_mc.graphics.lineStyle(1, 0xFF0000);
var pLen:Number = points.push({x:this.mouseX, y:this.mouseY, life:getTimer()});
for (var i:Number = 0; i < pLen; i++) {
if (!points[i]) {
continue;
}
if (getTimer() - points[i].life > 1000) {
points.splice(i--, 1);
}
else {
if (i!=0 && points[i]) {
//draw_mc.alpha *= 1.1;
var cx:Number = points[i - 1].x;
var cy:Number = points[i - 1].y;
draw_mc.graphics.curveTo(cx, cy, (points[i].x + cx) / 2, (points[i].y + cy) / 2);
line_mc.graphics.lineTo(cx, cy);
}
else {
draw_mc.graphics.moveTo(points[i].x, points[i].y);
line_mc.graphics.moveTo(points[i].x, points[i].y);
}
}
}
};
}
}