今天在整理教材的时候，觉得这个例子很适合AS进阶，虽然只有两百多行，但包含了不少内容。
点击这里下载源文件
1. 定制滑动条
2.标准的Web安全色调色板（可直接输入数值选色），并可赋予不同的反馈动作
3.拷贝数组，要知道，是不能用“=”来拷贝数组的，这里面的拷贝数组函数具有通用性，大家可以看看
4.基本画图
5.回放
6.SharedObject的使用
有疑问的朋友请提出，我一一解答， 有不同思路的也请提出来。
//通用函数，设置RGB值
function mySetRGB(r:Number, g:Number, b:Number):Number {
return r << 16 g << 8 b;
}
//通用函数，规整颜色数值
function colorToStr(_color:Number):String {
var _str:String = _color.toString(16).toUpperCase();
while (_str.length<6) {
_str = "0"+_str;
}
return _str;
}
//调色板函数
function setTempColor(_color:Number, _mc:MovieClip) {
(new Color(_mc.show_color_mc)).setRGB(_color);
_mc.color_str.text = colorToStr(_color);
}
//调色板函数
function setNowColor(_color:Number, _mc:MovieClip) {
(new Color(_mc.show_color_mc)).setRGB(_color);
_mc.value = _color;
}
////设置调色板的鼠标响应
function setColorMouseFun(color_mc:MovieClip) {
color_mc.useHandCursor = false;
color_mc.onRollOver = function() {
this.swapDepths(this._parent.getNextHighestDepth());
(new Color(this.border_mc)).setRGB(0xFFFFFF);
setTempColor(this.color_num, this._parent);
};
color_mc.onRollOut = color_mc.onReleaseOutside=function () {
(new Color(this.border_mc)).setRGB(0);
};
color_mc.onRelease = function() {
setNowColor(this.color_num, this._parent.parent);
this._parent.fun();
this._parent.removeMovieClip();
};
}
//生成调色板(_mc:宿主，now_color:初始颜色，d_width:色块宽度，fun:结束时调用的函数)
function crtColorBoard(_mc:MovieClip, now_color:Number, d_width:Number, fun:Function) {
_mc.fun = fun;
var color_array:Array = new Array(0, 0x333333, 0x666666, 0x999999, 0xCCCCCC, 0xFFFFFF, 0xFF0000, 0x00FF00, 0x0000FF, 0xFFFF00, 0x00FFFF, 0xFF00FF);
for (i=0; i<12; i++) {
var color_mc:MovieClip = _mc.attachMovie("color_dot", "dot"+_mc.getNextHighestDepth(), _mc.getNextHighestDepth());
color_mc._width = color_mc._height=d_width;
color_mc._x = 0;
color_mc._y = i*d_width;
color_mc.color_num = color_array[i];
(new Color(color_mc.dot)).setRGB(color_mc.color_num);
setColorMouseFun(color_mc);
}
for (var R = 0; R<6; R++) {
for (var G = 0; G<6; G++) {
for (var B = 0; B<6; B++) {
var color_mc:MovieClip = _mc.attachMovie("color_dot", "dot"+_mc.getNextHighestDepth(), _mc.getNextHighestDepth());
color_mc._width = color_mc._height=d_width;
color_mc._x = B*d_width+R%3*6*d_width+d_width;
color_mc._y = G*d_width+Math.floor(R/3)*6*d_width;
color_mc.color_num = mySetRGB(0x33*R, 0x33*B, 0x33*G);
(new Color(color_mc.dot)).setRGB(color_mc.color_num);
setColorMouseFun(color_mc);
}
}
}
setTempColor(now_color, _mc);
//设置颜色手动输入，回车结束
_mc.color_str.onSetFocus = function() {
this.text = "";
this.onChanged = function() {
(new Color(_mc.show_color_mc)).setRGB(parseInt(this.text, 16));
};
_mc.onEnterFrame = function() {
if (Key.isDown(13)) {
setNowColor(parseInt(this.color_str.text, 16), this.parent);
this.fun();
this.removeMovieClip();
}
};
};
_mc.color_str.onKillFocus = function() {
delete this.onChanged;
delete _mc.onEnterFrame;
};
}
//初始化滑杆（_mc:宿主,value:初始值, min_num:最小值, max_num:最大值,len:滑杆长度,is_int:是否取整数）
function initBar(_mc:MovieClip, value:Number, min_num:Number, max_num:Number, len:Number, is_int:Boolean) {
_mc.line._width = len;
_mc.value = value;
_mc. min_num = min_num;
_mc. max_num = max_num;
_mc.depth = ( max_num- min_num)/len;
_mc.is_int = is_int;
_mc.dot._x = (value- min_num)/_mc.depth;
_mc.dot._y = 0;
_mc.dot.useHandCursor = false;
_mc.dot.onPress = function() {
this.startDrag(false, 0, 0, len, 0);
this.onMouseMove = function() {
this._parent.value = this._parent. min_num+this._x*this._parent.depth;
if (this._parent.is_int) {
this._parent.value = Math.round(this._parent.value);
}
updateAfterEvent();
};
};
_mc.dot.onRelease = _mc.dot.onReleaseOutside=function () {
this.stopDrag();
delete this.onMouseMove;
};
}
//开始画线
function crtNewLine(width:Number, color_num:Number, alpha:Number):MovieClip {
var line:MovieClip = canvas.createEmptyMovieClip("line"+canvas.getNextHighestDepth(), canvas.getNextHighestDepth());
line.lineStyle(width, color_num, alpha);
line.moveTo(line._xmouse, line._ymouse);
return line;
}
//设置背景色
function setBG() {
(new Color(canvas.bg)).setRGB(bg_color_mc.value);
}
//清除_mc中所有_name以_str开始的MC
function clearAll(_mc:MovieClip, _str:String) {
var str_len:Number = _str.length;
for (i in _mc) {
if (_mc[i]._name.substr(0, str_len) == _str) {
_mc[i].removeMovieClip();
}
}
}
//回放
function replay(_mc:MovieClip, _array:Array, speed:Number) {
if (_array.length) {
var line = _array.shift();
var current_mc:MovieClip = _mc.createEmptyMovieClip("line"+_mc.getNextHighestDepth(), _mc.getNextHighestDepth());
var style:Object = line.shift();
var pos:Object = line.shift();
current_mc.lineStyle(style.width, style.color, style.alpha);
current_mc.moveTo(pos.x, pos.y);
onEnterFrame = function () {
drawALine(current_mc, line, speed);
};
}
}
function drawALine(_mc:MovieClip, _array:Array, speed:Number) {
for (var i = 0; i<speed; i++) {
if (_array.length == 0) {
delete onEnterFrame;
replay(canvas, replay_array, speed);
break;
}
var pos:Object = _array.shift();
_mc.lineTo(pos.x, pos.y);
}
}
//拷贝记录数组
function copyArray(_array):Array {
var out_array = new Array();
for (var i = 0; i<_array.length; i++) {
out_array[i] = new Array();
for (var j = 0; j<_array[i].length; j++) {
out_array[i][j] = new Object();
for (name in _array[i][j]) {
out_array[i][j][name] = _array[i][j][name];
}
}
}
return out_array;
}
//main
var width_num:Number = 2;
var alpha_num:Number = 80;
var color_num:Number = 0x000000;
var bg_color_num:Number = 0xFFFFFF;
var replay_speed:Number = 5;
setNowColor(color_num, line_color_mc);
setNowColor(bg_color_num, bg_color_mc);
initBar(width_bar, width_num, 0, 50, 100, true);
initBar(alpha_bar, alpha_num, 0, 100, 100, true);
initBar(speed_bar, replay_speed, 1, 30, 100, true);
line_color_mc.onRelease = function() {
attachMovie("color_board", "color_board", 10);
color_board._x = this._x;
color_board._y = this._y+50;
color_board.parent = this;
crtColorBoard(color_board, this.value, 10);
};
bg_color_mc.onRelease = function() {
attachMovie("color_board", "color_board", 10);
color_board._x = this._x;
color_board._y = this._y+50;
color_board.parent = this;
crtColorBoard(color_board, this.value, 10, setBG);
};
setBG();
//回放数组
var history_array:Array = new Array();
//SO
var his_so:SharedObject = SharedObject.getLocal("cg001_canvas", "/");
if (!his_so.data._array) {
his_so.data._array = history_array;
} else {
history_array = his_so.data._array;
replay_array = copyArray(history_array);
replay(canvas, replay_array, speed_bar.value);
}
//canvas交互
canvas.setMask(canvas_mask);
canvas.useHandCursor = false;
canvas.onPress = function() {
var current_mc:MovieClip = canvas.createEmptyMovieClip("line"+canvas.getNextHighestDepth(), canvas.getNextHighestDepth());
current_mc.lineStyle(width_bar.value, line_color_mc.value, alpha_bar.value);
current_mc.moveTo(this._xmouse, this._ymouse);
//
history_array.push(new Array({width:Number=width_bar.value, color:Number=line_color_mc.value, alpha:Number=alpha_bar.value},
{x:Number=this._xmouse, y:Number=this._ymouse}));
current_array = history_array.length-1;
//
this.onMouseMove = function() {
current_mc.lineTo(this._xmouse, this._ymouse);
history_array[current_array].push({x:Number=this._xmouse, y:Number=this._ymouse});
updateAfterEvent();
};
};
canvas.onRelease = canvas.onReleaseOutside=function () {
his_so.flush();
delete this.onMouseMove;
};
//clear BTn
clear_btn.onRelease = function() {
clearAll(canvas, "line");
history_array = new Array();
replay_array = new Array();
his_so.data._array = history_array;
}
replay_btn.onRelease = function() {
clearAll(canvas, "line");
replay_array = copyArray(history_array);
replay(canvas, replay_array, speed_bar.value);
};
