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我想獲得一個具有視頻的菜單，我將以特定速度滾動瀏覽。現在我有30FPS，我試圖降低這不「幫助」。任何人都可以請幫我控制汽車卷軸的速度嗎？以下是代碼。我感謝任何幫助。AS3自動滾動速度控制
package zoom
{
import flash.display.*;
import flash.media.*;
import flash.events.*;
import flash.ui.Mouse;
//importing classes
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
import flash.text.TextFormat;
import flash.text.TextFormatAlign;
import flash.text.AntiAliasType;
import flash.filters.*;
import flash.net.*;
import flash.utils.*;
import flash.geom.*;
import flash.ui.*;
import caurina.transitions.*;
import caurina.transitions.properties.FilterShortcuts;
import caurina.transitions.properties.DisplayShortcuts;
import flash.system.Capabilities;
public class Scroller extends MovieClip
{
private var source:DisplayObject = null;
private var i:int = 0; //for the 'for' instruction
private var buttonPos:int = 0;
private var buttonCon:MovieClip = new MovieClip();
private var w:int = 0;
private var h:int = 0;
private var dir:String = ""
private var scrollbar:String = "";
private var viewIndex:int = 0;
private var errorOffset:int = 30;
public var scrollOffset:int = 0;
private var blurScroll:String = "on";//choose on/off if you want blur scroll
private var mouseDown:Boolean = false;
private var scrollIndex:int = 0;
private var scrollbar_mc:MovieClip;
public var gradientMask:String = "on";
public var bg:Sprite = new Sprite();
public var maskSize:int = 15;
public var isScroll:Boolean = true;
public function Scroller()
{
this.name = "scroller";
}
public function feedvars(psource:DisplayObject,pw:int,ph:int,pdir:String = "ver",pscrollbar:String = "off")
{
w = pw;
h = ph;
dir = pdir;
scrollbar = pscrollbar;
DisplayShortcuts.init();
FilterShortcuts.init();
source = psource;
//we set up the mask
addChild(source);
trace('Scroller.as: sh: ' + source.height);
if (Capabilities.screenResolutionX < 1200)
blurScroll = "off";
trace("Scroller.as: sc" + scrollbar);
if (scrollbar == "on")
{
addEventListener(MouseEvent.MOUSE_WHEEL, handleMouseWheel);
if (dir == "ver")
{
if (h < source.height)
{
vscrollbar_mc.x = w;
vscrollbar_mc.bg_mc.height = h;
scrollbar_mc = vscrollbar_mc;
hscrollbar_mc.visible = false;
setChildIndex(vscrollbar_mc, numChildren - 1);
}
else
isScroll = false;
}
else
{
if (w < source.width)
{
hscrollbar_mc.y = h;
hscrollbar_mc.bg_mc.width = w;
scrollbar_mc = hscrollbar_mc;
vscrollbar_mc.visible = false;
setChildIndex(hscrollbar_mc, numChildren - 1);
}
else
isScroll = false;
}
if(scrollbar_mc!=null){
scrollbar_mc.buttonMode = true;
scrollbar_mc.mouseChildren = false;
scrollbar_mc.addEventListener(MouseEvent.MOUSE_DOWN, handleScrollbarMouse,false,0,true);}
addEventListener(Event.ADDED_TO_STAGE, function onStage(e:Event) {
trace('Scroller.as: on stage');
stage.addEventListener(MouseEvent.MOUSE_UP, handleScrollbarMouse);
stage.addEventListener(Event.MOUSE_LEAVE, handleLeave); }, false, 0, true);
}
else{
vscrollbar_mc.visible = false;
hscrollbar_mc.visible = false;
}
if (!isScroll)
{
vscrollbar_mc.visible = false;
hscrollbar_mc.visible = false;
}
if (isScroll)
{
addChild(bg);
createMask();
bg.cacheAsBitmap = true;
source.cacheAsBitmap = true;
source.mask = bg;
vscrollbar_mc.alpha = 1;
hscrollbar_mc.alpha = 1;
}
//choose between mouse move and enter frame ghandling
if ((dir=="ver" && source.height > ph) || (dir=="hor" && source.width > pw)){
addEventListener(Event.ENTER_FRAME, handleMouse);
addEventListener(Event.REMOVED_FROM_STAGE, handleRemove);
}
}
public function handleMouse(e:Event){
//trace(mouseDown);
//the function which moves the source depending on mouse
if (scrollbar == "on")
{
if (mouseDown == true)
{
if (dir == "ver")
{
scrollIndex = scrollbar_mc.mouseY - (scrollbar_mc.head_mc.height >> 1);
if (scrollIndex < 0) scrollIndex = 0;
if (scrollIndex > h - scrollbar_mc.head_mc.height) scrollIndex = h - scrollbar_mc.head_mc.height;
Tweener.addTween(scrollbar_mc.head_mc, { y:scrollIndex, time:0.5 });
Tweener.addTween(scrollbar_mc.head_mc, { _frame:30, time:1 });
viewIndex = (scrollIndex/(h - scrollbar_mc.head_mc.height)) * -(source.height - h);
Tweener.addTween(source, { y:viewIndex, rounded:true, time:1 });
if (blurScroll == "on")
Tweener.addTween(source, { _Blur_blurY:Math.abs(viewIndex-source.y)/5, time:0.3 });
}
else
{
scrollIndex = scrollbar_mc.mouseX - (scrollbar_mc.head_mc.width>>1);
if (scrollIndex < 0) scrollIndex = 0;
if (scrollIndex > w - scrollbar_mc.head_mc.width) scrollIndex = w - scrollbar_mc.head_mc.width;
Tweener.addTween(scrollbar_mc.head_mc, { x:scrollIndex, time:0.5 });
Tweener.addTween(scrollbar_mc.head_mc, { _frame:30, time:1 });
viewIndex = (scrollIndex/(w - scrollbar_mc.head_mc.width)) * -(source.width - w);
Tweener.addTween(source, { x:viewIndex, time:1 });
if (blurScroll == "on")
{
Tweener.addTween(source, { _Blur_blurX:Math.abs(viewIndex-source.x)/5, time:0.3 });
}
}
}
}
else
{
if (mouseY > 0 && mouseY < h && mouseX > 0 && mouseX < w)
{
if (dir == "ver")
{
viewIndex = (mouseY/h) * -(source.height - h + errorOffset * 2 + scrollOffset * 2) + scrollOffset + errorOffset;
if (viewIndex > scrollOffset) viewIndex = scrollOffset;
if (viewIndex < -(source.height-h-1 + scrollOffset)) viewIndex = -(source.height-h-1 + scrollOffset);
Tweener.addTween(source, { y:viewIndex, transition:"easeOutSine", rounded:true, time:.3 });
//set up blur scrolling
if (blurScroll == "on")
{
Tweener.addTween(source, { _Blur_blurY:Math.abs(viewIndex-source.y)/5, time:.2 });
}
}
else
{
viewIndex = (mouseX/w) * -(source.width - w + errorOffset * 2 + scrollOffset * 2) + scrollOffset + errorOffset;
if (viewIndex > scrollOffset) viewIndex = scrollOffset;
if (viewIndex < -(source.width-w + scrollOffset)) viewIndex = -(source.width-w + scrollOffset);
Tweener.addTween(source, { x:viewIndex, transition:"easeOutSine", rounded:true, time:.3 });
//set up blur scrolling
if (blurScroll == "on")
{
Tweener.addTween(source, { _Blur_blurX:Math.abs(viewIndex-source.x)/5, time:.2 });
}
}
}
else
{
Tweener.addTween(source, { _Blur_blurY:0,_Blur_blurX:0, time:.2 });
}
}
}
public function handleRemove(e:Event)
{
if(hasEventListener(Event.ENTER_FRAME))
removeEventListener(Event.ENTER_FRAME, handleMouse);
if(hasEventListener(Event.REMOVED_FROM_STAGE))
removeEventListener(Event.REMOVED_FROM_STAGE, handleRemove);
if(hasEventListener(MouseEvent.MOUSE_WHEEL))
removeEventListener(MouseEvent.MOUSE_WHEEL, handleMouseWheel);
}
public function handleScrollbarMouse(e:MouseEvent)
{
//function which gets the scrollbars attention
if (e.type == "mouseDown")
{
mouseDown = true;
}
if (e.type == "mouseUp")
{
mouseDown = false;
if(scrollbar_mc!=null)
Tweener.addTween(scrollbar_mc.head_mc, { _frame:1, time:1 });
if(blurScroll=="on")
Tweener.addTween(source, { _Blur_blurY:0,_Blur_blurX:0, time:.2 });
}
}
public function handleMouseWheel(e:MouseEvent)
{
//mouse wheel function
scrollIndex -= e.delta;
if (scrollIndex < 0) scrollIndex = 0;
if (scrollIndex > h - scrollbar_mc.head_mc.height) scrollIndex = h - scrollbar_mc.head_mc.height;
Tweener.addTween(scrollbar_mc.head_mc, { y:scrollIndex, time:0.5 });
viewIndex = (scrollIndex/(h - scrollbar_mc.head_mc.height)) * -(source.height - h);
Tweener.addTween(source, { y:viewIndex, time:1 });
}
public function handleLeave(e:Event)
{
trace('Scroller.as: left stage');
mouseDown = false;
if(scrollbar_mc!=null)
Tweener.addTween(scrollbar_mc.head_mc, { _frame:1, time:1 });
Tweener.addTween(source, { _Blur_blurY:0,_Blur_blurX:0, time:.2 });
}
public function createMask()
{
var bgmain:Sprite = new Sprite();
if (gradientMask != "on")
{
bgmain.graphics.beginFill(0x000000);
bgmain.graphics.drawRect(0, 0, w, h);
bg.addChild(bgmain);
}
else
{
var bgup:Sprite = new Sprite();
var bgdown:Sprite = new Sprite();
var matrix:Matrix= new Matrix();
var colors:Array=[0x000000,0x000000];
var alphas:Array=[0,1];
var ratios:Array=[0,255];
matrix.createGradientBox(maskSize,w);
if (dir == "ver")
{
bgup.graphics.lineStyle();
bgup.graphics.beginGradientFill(GradientType.LINEAR,colors,alphas,ratios,matrix);
bgup.graphics.drawRect(0,0,maskSize,w);
bgup.graphics.endFill();
bgup.rotation = 90;
bgup.x = w;
bg.addChild(bgup);
bgmain.graphics.beginFill(0x000000);
bgmain.graphics.drawRect(0, 0, w, h - maskSize * 2);
bgmain.y = maskSize;
bg.addChild(bgmain);
alphas = [1, 0];
bgdown.graphics.lineStyle();
bgdown.graphics.beginGradientFill(GradientType.LINEAR,colors,alphas,ratios,matrix);
bgdown.graphics.drawRect(0,0,maskSize,w);
bgdown.graphics.endFill();
bgdown.rotation = 90;
bgdown.x = w;
bgdown.y = h - maskSize;
bg.addChild(bgdown);
}
else
{
bgup.graphics.lineStyle();
bgup.graphics.beginGradientFill(GradientType.LINEAR,colors,alphas,ratios,matrix);
bgup.graphics.drawRect(0,0,maskSize,h);
bgup.graphics.endFill();
//bgup.rotation = 90;
//bgup.x = maskSize;
bg.addChild(bgup);
bgmain.graphics.beginFill(0x000000);
bgmain.graphics.drawRect(0, 0, w - maskSize * 2, h);
bgmain.x = maskSize;
bg.addChild(bgmain);
alphas = [1, 0];
bgdown.graphics.lineStyle();
bgdown.graphics.beginGradientFill(GradientType.LINEAR,colors,alphas,ratios,matrix);
bgdown.graphics.drawRect(0,0,maskSize,h);
bgdown.graphics.endFill();
//bgdown.rotation = 90;
bgdown.x = w - maskSize;
//bgdown.y = h - maskSize;
bg.addChild(bgdown);
}
}
}
}
}
參見[寫作完美的問題（http://msmvps.com/blogs/jon_skeet/archive/2010/08/29/writing-the-perfect-question.aspx） – gideon 2011-03-26 20:49:56
你寫的代碼？如果不是，你對它有什麼瞭解？你能否舉一個你現在擁有的例子，並且更具體地描述你想要得到的東西？ – Kodiak 2011-03-27 01:59:09