How to merge two images into one using Actionscript-阿里云开发者社区

How to merge two images into one using Actionscript

2017-11-08 1033

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简介：

Well, it’s very easy, using BitmapData and Bitmap. This example makes things a bit more complex to show some principles. Hope you learn something out of it off course.

 
        // we'll scale the first ( background ) image by 
        50% 
       
        var s : Number = .
        5
        ; 
       
        // create a matrix to make the scalilng of the bitmap possible
       
        var scaleMatrix : Matrix = new Matrix();
       
        // apply the scaling to the matrix
       
        scaleMatrix.scale(s,s);
       
        // create a bitmapdata object from an existing bitmap ( 
        "bmp" 
        in this case ) 
       
        var scaledBitmap : BitmapData = new BitmapData(bmp.width*s,bmp.height*s,false,
        0
        ); 
       
        // draw the content and scale it using the matrix
       
        scaledBitmap.draw(bmp,scaleMatrix);
       
        // we have an embedded asset called 
        "flickr"
        , a flickr logo in gif 
        format 
       
        var 
        icon 
        : Bitmap = new flickr() as Bitmap; 
       
        // let's place it in the 
        bottom 
        right 
        corner 
       
        var ix : Number = scaledBitmap.width-
        icon
        .width; 
       
        var ij : Number = scaledBitmap.height-
        icon
        .height; 
       
        // create a matrix for the position of the 
        icon 
       
        // note the use of the ix and ij variables in the parameters
       
        var positionMatrix : Matrix = new Matrix(
        1
        ,
        0
        ,
        0
        ,
        1
        ,ix,ij); 
       
        // draw the 
        icon 
        bmp to the bitmapdata 
       
        scaledBitmap.draw( 
        icon
        , positionMatrix ); 
       
        // add the new, merged, bitmap to your displaylist
       
        var bmp : Bitmap = new Bitmap( scaledBitmap );
       
        addChild( bmp ); 
       
        // that's it!<br>

PS: as per user comments I’ve also uploaded an example to use in the Flash IDE ( *.fla file ) – the above example assumes you’re using Flash Builder or another editor

I do have to say I don’t understand why people try to merge two bitmaps in Flash using the IDE. You could just as easily create a MovieClip with the two bitmaps on top of each other. Or am I missing something? Tell me in the comments!

Download the example *.fla file here: http://www.webdevotion.be/blog/wp-content/mergy.fla.zip

本文转自 OldHawk 博客园博客，原文链接：http://www.cnblogs.com/taobataoma/archive/2010/12/24/1916216.html，如需转载请自行联系原作者

How to merge two images into one using Actionscript

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