教學主題: Flash AS3教程:創建好看的遮罩動畫效果
大家好!! 小編今天來和大家分享關於 Flash/3D/CAD教程中的Flash教程教學
今天的這個教學主題是: Flash AS3教程:創建好看的遮罩動畫效果
這教學的重點為這幾點 [ 動畫,效果,好看,創建,教程,圖片,舞台,一個,影片,輸入, ]
希望你可以從這幾點中領悟到修圖的精華
本文重點
本教程是一個創建遮罩效果的教程,將學習如何在一個圖像上創建多個大小不同的運動遮罩。下面一起來學習。
演示:
1、新建Flash文件,導入所需的圖片到舞台,設置舞台屬性的寬、高同圖片相同大小。
2、將圖片設置為左對齊、上對齊。右鍵單擊圖片轉換成影片剪輯,命名為“Background”,設置註冊點為居中。圖1:
3、將圖層1改名為背景,在屬性面板中輸入實例名稱:“backgroundImage” 鎖定。圖2:
4、新建一個圖層,用橢圓工具畫一個禁止筆觸的50*50的圓,填充色任意。
5、把圓轉換成影片剪輯,設置如下。圖3:
6、刪除舞台上的圓,圖層改名為as。至此fla的美工已全部完成。
7、新建ActionScript文件,編寫一個外部的MyMask.as文件。在編譯器中輸入代碼:
package {
import flash.display.MovieClip;
public class MyMask extends MovieClip {
//Mask’s x and y speed
public var speedX:Number;
public var speedY:Number;
//Set the given scale for this mask, when we create a new
//mask object
public function MyMask(scale:Number) {
this.scaleX = scale;
this.scaleY = scale;
}
}
}
這是一個名為MyMask.as的遮罩類,保存在fla文件的同一目錄下。
8、切換到fla,在as層輸入代碼:
//We use an array to hold all our masks.
//(Except the mask that follows our cursor)
var masks:Array = new Array();
//We add all of the masks to a container
var maskContainer:Sprite = new Sprite();
//Set the maskContainer to be the image’s mask
backgroundImage.mask = maskContainer;
//Add the container on the stage
addChild(maskContainer);
//Create the mask which follows cursor movement (master mask)
var masterMask:MyMask = new MyMask(1);
//Set the master masks’s coordinates to match cursor’s coordinates
masterMask.x = mouseX;
masterMask.y = mouseY;
//Add the master mask to a container
maskContainer.addChild(masterMask);
//Cache the image and container as bitmap, so we
//can animate the alpha of the masks
maskContainer.cacheAsBitmap=true;
backgroundImage.cacheAsBitmap=true;
//Create a timer that is called every 0.2 seconds
var timer:Timer = new Timer(200,0);
timer.addEventListener(TimerEvent.TIMER, timerEvent);
timer.start();
//This function is called every 0.2 seconds.
//We create a new mask in this function.
function timerEvent(e:TimerEvent):void {
//Calculate a random scale for the new mask (0 to 1.5)
var scale:Number = Math.random() * 1.5 + 0.5;
//Create a new mask with random scale
var newMask:MyMask = new MyMask(scale);
//Set the position for the new mask
newMask.x = mouseX;
newMask.y = mouseY;
//Assign a random x and y speed for the mask
newMask.speedX = Math.random() * 20 – 10;
newMask.speedY = Math.random() * 20 – 10;
//Add the mask to the container
maskContainer.addChild(newMask);
//Add the mask to the array
masks.push(newMask);
}
//We need ENTER_FRAME to animate the masks
addEventListener(Event.ENTER_FRAME, enterFrameHandler);
//This function is called in each frame
function enterFrameHandler(e:Event):void {
//Loop through the mask array
for (var i:uint = 0; i
//Save a mask to a local variable
var myMask:MyMask = (MyMask)(masks[i]);
//Update the x and y position
myMask.x += myMask.speedX;
myMask.y += myMask.speedY;
//Increase the scale
myMask.scaleX += 0.1;
myMask.scaleY += 0.1;
//Reduce the alpha
myMask.alpha -= 0.01;
//If the alpha is below 0, remove the mask
//from the container and from the array
if (myMask.alpha
masks.splice(i,1);
maskContainer.removeChild(myMask);
}
}
//Update the master mask position
masterMask.x = mouseX;
masterMask.y = mouseY;
}
9、好了,工作全部完成,測試你的影片。
這是一個遮罩動畫效果教程,學習用代碼製作遮罩動畫。
演示:
1、準備一張圖片。
2、新建一個500*300的Flash文件。(設置寬、高同圖片大小)
3、導入圖片到庫中。
4、從庫中把圖片拖到舞台上,左對齊,上對齊。
5、右鍵點擊圖片,轉換成影片剪輯。元件名:“cityMC”。圖1:
6、在屬性面板中輸入實例名稱:“cityMC”。圖2:
7、鎖定圖層1,添加圖層2。用圓角矩形工具在舞台上任意位置、任意顏色、畫一個圓角為10的40*40的矩形。圖3:
8、把圓角矩形轉換成影片剪輯,名稱為“maskMC”,註冊點居中。圖4:
9、刪除舞台上的圓角矩形。打開庫右鍵單擊maskMC影片剪輯,選屬性作類鏈接,類名:“MaskRectangle” 圖5:
10、把圖層2改為as,輸入代碼:
//We need these classes for the animation
import fl.transitions.Tween;
import fl.transitions.easing.*;
//These are the mask rectangle’s width and height
var boxWidth:Number = 40;
var boxHeight:Number = 40;
//We want nine rows and 14 columns to make the animation look nice
var rows:Number = 9;
var columns:Number = 14;
//We will add the rectangle’s into an array (we need this array in the animation)
var rectangles:Array = new Array();
//We add the tweens into an array so they don’t get carbage collected
var tweens:Array = new Array();
//This container will hold all the mask rectangles
var container:Sprite = new Sprite();
//Add the container onto the stage
addChild(container);
//Set the container to be the image’s mask
cityMC.mask = container;
//Loop through the rows
for (var i=0; i
//Loop through the columns
for (var j=0; j
//Create a new mask rectangle
var maskRectangle:MaskRectangle = new MaskRectangle();
//Position the mask rectangle
maskRectangle.x = j * boxWidth;
maskRectangle.y = i * boxWidth;
//Set the scaleX to be 0, so the rectangle will not be visible
maskRectangle.scaleX = 0;
//Add the rectangle onto the container
container.addChild(maskRectangle);
//Add the mask rectangle to the rectangles array
rectangles.push(maskRectangle);
}
}
//Create and start a timer.
//This timer is called as many times as there are rectangles on the stage.
var timer = new Timer(35,rectangles.length);
timer.addEventListener(TimerEvent.TIMER, animateMask);
timer.start();
//This function is called every 0.035 seconds
function animateMask(e:Event):void {
//Save the rectangle to a local variable
var rectangle = rectangles[timer.currentCount – 1];
//Tween the scaleX of the rectangle
var scaleTween:Tween = new Tween(rectangle,"scaleX",Regular.easeOut,0,1,1,true);
tweens.push(scaleTween);
}
11、完工,測試影片。
演示:
1、導入你想要使用的一個圖片到舞台,設置屬性:寬、高與圖片相同。
2、把圖片拖到舞台上,左對齊,上對齊。右鍵單擊圖片,轉換成電影修剪。(名字任意)圖1:
3、在屬性面板中輸入實例名字 " imageMC" 。圖2:
4、添加as層,輸入代碼:
//This container contains all the mask graphics
var container:Sprite = new Sprite();
addChild (container);
//Set the container to be the image’s mask
imageMC.mask = container;
//Set the starting point
container.graphics.moveTo (mouseX, mouseY);
addEventListener (Event.ENTER_FRAME, enterFrameHandler);
/*Draw a new rectangle in each frame and add it onto the container
NOTE: you can use all kinds of shapes, not just rectangles! */
function enterFrameHandler (e:Event):void {
container.graphics.beginFill(0xff00ff);
container.graphics.drawRect(mouseX-50, mouseY-50, 100, 100);
container.graphics.endFill();
}
Mouse.hide();
5、完成,測試你的影片剪輯。遮罩可以做成任意形狀。只是矩形、圓形等簡單的圖形比較容易一些,複雜的圖形用代碼繪製要難一些。
討論:http://www.missyuan.com/viewthread.php?tid=441990
看完小編分享的教學之後 是不是對Flash教程中的Flash/3D/CAD教程教學更熟悉了呢?
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文章標題: 骨子愛創意- Flash AS3教程:創建好看的遮罩動畫效果–轉載請註明來源處
本教學分類為Flash教程中的 Flash/3D/CAD教程相關教學
文章相關關鍵字為: 動畫,效果,好看,創建,教程,圖片,舞台,一個,影片,輸入,
本文永久連結 :Flash AS3教程:創建好看的遮罩動畫效果
本文轉載自 :VIA