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Flash AS3如何制作画框随图片的大小而动态改变

时间:2018年04月08日 来源:www.guiademucuri.com

  这篇教程是向大家介绍Flash AS3制作画框随图片的大小而动态改变方法,这是一个为图片加框的效果,画框依据图片的大小而动态改变。

  1、新建一个Flash文件,宽、高设置为550*420,背景黑色。

  2、准备4张大小不同规格的图片,最大的宽、高不要超过530*380。

  3、导入图片:在文件菜单选导入=>导入到库。如图:  

  4、图层1,改名为图片。拖第一个图片到舞台将它转换成影片剪辑。命名”Image 1 ″设定注册点居中。如图:  

  5、重复第4步,拖入其它的3张图片到舞台,任意摆放。命名”Image 2 ″,”Image 3 ″,”Image 4 ″,库面板如图:  

  6、给舞台上的实例命名“image1”至“image4”。

  7、隐藏图层1,添加图层2。  

  8、图层2改名为边框,用矩形工具,填充色禁止,笔触白色,高度为4像素,画一个长方形边框。

  9、将长方形转换为影片剪辑,设置注册点居中。舞台实例命名为“imageBorder”。:  

  10、添加图层3,命名为as,输入代码:

  复制代码

  代码如下:

  //Import TweenMax (we use it for animation)

  import gs.*;

  //Save the center coordinates of the stage

  var centerX:uint = stage.stageWidth / 2;

  var centerY:uint = stage.stageHeight / 2;

  //Let’s add the images to an array

  var imagesArray:Array = new Array(image1,image2,image3,image4);

  //This variable will store the current image displayed

  var currentImage:MovieClip = null;

  //Make the border invisible at first

  imageBorder.alpha = 0;

  //Loop through the array elements

  for (var i:uint = 0; i < imagesArray.length; i++) {

  //We want all the images to be invisible at the beginning

  imagesArray[i].alpha = 0;

  //Save the index of the image to a variable called "imageIndex"

  imagesArray[i].imageIndex = i;

  }

  //We listen when the user clicks the mouse on the stage

  stage.addEventListener(MouseEvent.CLICK, stageClicked);

  //This function is called when the user clicks the stage

  function stageClicked(e:MouseEvent):void {

  //Check that the current image is not null

  if (currentImage != null) {

  //Animate the current image away

  TweenMax.to(currentImage, 1, {alpha:0});

  //Check to see if we are at the end of the imagesArray

  if (currentImage.imageIndex == imagesArray.length - 1) {

  //Set the first image of the array to be our currentImage

  currentImage = imagesArray[0];

  } else {

  //We are not at the end of the array, so get the next image from the array

  currentImage = imagesArray[currentImage.imageIndex + 1];

  }

  } else {

  //If the currentImage is null (= we just started the movie), we set the first image in the array

  //to be our current image.

  currentImage = imagesArray[0];

  //Set the border’s alpha to 0.5

  imageBorder.alpha = 0.5;

  }

  //Position the current image and the border to the center of the stage

  currentImage.x = imageBorder.x = centerX;

  currentImage.y = imageBorder.y = centerY;

  //Animate the border’s width and height according to the current image’s dimensions.

  //We also a nice glow effect to the image border

  TweenMax.to(imageBorder, 0.5, {width: currentImage.width + 8, height: currentImage.height + 8,

  glowFilter:{color:Math.random() * 0xffffff, alpha:1, blurX:20, blurY:20, strength:100, quality:1}});

  //Animate the currentImage’s alpha

  TweenMax.to(currentImage, 1, {alpha:1});

  }

  11、全部完工,测试影片。注意:把gs类库保存在fla同一目录下。

  教程结束,以上就是Flash AS3制作画框随图片的大小而动态改变教程,希望能对大家有所帮助,谢谢阅读!

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