/*
 * 在涂鸦程序中,一个mc内绘制大量的图形会严重的消耗cpu资源,当绘制10秒时候已经出现大的延迟了,
 * 要解决这个问题,就需要在一定时间后再建一个mc,在这个mc内绘制图形,这个可以适当的减轻cpu资源的消耗.
 */
//--------------------------------------------------------------------------------------------------------------------
count = 0;
mcs = [];
_root.onMouseDown = function() {
 if (_root._ymouse>335) {
  return;
 }
 _root.draw = true;
 _root.drawmc = _root.createEmptyMovieClip("a"+++count, count);
 _root.drawmc.moveTo(_root._xmouse, _root._ymouse);
 mcs.push(_root.drawmc);
 t = getTimer();
};
var t;
_root.onMouseMove = function() {
 if (_root.draw) {
  if (getTimer()-t>3000) {
   _root.onMouseDown();
   trace("new mc...");
  }
  _root.drawmc.lineStyle(2, 0, 100);
  // 
  if (_root._ymouse>335) {
   ymouse = 335;
  } else {
   ymouse = _root._ymouse;
  }
  _root.drawmc.lineTo(_root._xmouse, ymouse);
 }
};
_root.onMouseUp = function() {
 _root.draw = false;
};
clear.onRelease = function() {
 trace(mcs);
 for (var i in mcs) {
  mcs[i].removeMovieClip();
 }
 mcs = [];
 count = 1;
};