Save bitmap from flash

Using .NET/C# to generate bitmap from Flash 8

*update*
2006-06-20. I added a progress bar to make it more clear what is happening.

I have been searching for cool ways to use flash for creating gallery functions since it's both cool and easy to make great functions. And now when we can generate files on disk it is really usefull!

There are many examples around for this but I did not really find suitable code for me, using .Net/C#, so after messing around a bit i put together a nice solution using a .NET Web service. Please be patient, it will take a few seconds to generate the pixel array and send it to the web service.

Check it out:



The generated image will show in a new window.

Flash

function Generate(obj:MovieClip):Void
{
var pixelarr:Array = new Array()
var bmp:BitmapData = new BitmapData(obj._width, obj._height,false,0xffffff);
var myMatrix:Matrix = new Matrix();
//No positioning
myMatrix.translate(0, 0);
bmp.draw(obj.Picture,myMatrix);

var w:Number = bmp.width;
var h:Number = bmp.height;

for(var a=0; a ‹ h; a++)
{
for(var b=0; b‹w; b++)
{
pixelarr.push(bmp.getPixel32(b, a));
}
}
var wsdlURI = "http://www.2cool2care.com/flash/Service.asmx";
var myWebService:WebService = new mx.services.WebService(wsdlURI+"?WSDL");
var callback1:PendingCall = myWebService.SaveImage(pixelarr.toString(),h,w);
callback1.onResult = function(result)
{
//result is the file name
if(result)
{
getURL("http://www.2cool2care.com/flash/"+result,"_blank");
trace(result);
}
}
callback1.onFault = function(fault)
{
trace("Err: "+fault.faultstring)
}
}

C#

[WebMethod]
public string SaveImage(string Pixels,int Height, int Width)
{
//Create pixel array
String[] PxArr = Pixels.Split(',');
Bitmap MyImage = new Bitmap(Width, Height);
Graphics Gfx = Graphics.FromImage(MyImage);
Gfx.DrawRectangle(new Pen(Color.Red), new Rectangle(0, 0, Width, Height));
int k = 0;
//Loop and paint pixels
for (int i = 0; i ‹ Height; i++)
{
for (int j = 0; j ‹ Width; j++)
{
MyImage.SetPixel(j, i, Color.FromArgb(Convert.ToInt32(PxArr[k])));
k++;
}
}
//Randomize filename and save
Random RandomClass = new Random();
String Filename = RandomClass.Next().ToString() + ".png";
MyImage.Save(Server.MapPath(Filename), System.Drawing.Imaging.ImageFormat.Png);
return Filename;
}

I Hope someone finds this useful!

Take care,
Rob