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Image resize and rotate [message #677404]

Wed, 08 June 2011 08:27

Eclipse User

Hello,
I'm trying to rotate an Image (GraphicsAlgorithm extension) that I create with the following code (mainly taken from your tutorial):

ContainerShape containerShape = peCreateService.createContainerShape(targetDiagram, true);
GraphicsAlgorithm visibleGA;
Rectangle invisibleRectangle;
        {
        invisibleRectangle = gaService.createRectangle(containerShape);
	gaService.setLocationAndSize(invisibleRectangle, context.getX(), context.getY(), width + 2*xBorder, height + 2*yBorder);


        Image visibleGA  = gaService.createImage(container, SLDImageProvider.IMG_CONTACTOR);
        visibleGA.setStretchH(true);
        visibleGA.setStretchV(true);
        visibleGA.setProportional(true); 
 
       gaService.setLocationAndSize(visibleGA, xBorder, yBorder, width, height);
 
        }

This code does not seem to enable the resizing of the Image nor the stretching of the image to the height and width dimensions.

Could you possibly help me understand how to allow the resizing?
Also I'd like to understand how to rotate the image: if there is standard way to do this, could you give a example please?

Thank you very much.

S

Re: Image resize and rotate [message #677417 is a reply to message #677404]

Wed, 08 June 2011 09:04

Eclipse User

Hi,

i think the issue is already tracked:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=342869

Best, Tim

Re: Image resize and rotate [message #677441 is a reply to message #677417]

Wed, 08 June 2011 10:32

Eclipse User

Hi,
thank you for your quick response.

I have been through these articles but I still cannot to resize an GA Image: using an extension of AbstractImageProvider, I may specify only the image path and I cannot get the SWT Image handler from the GA Image created by GAService.

Thank you.
Stefano

Re: Image resize and rotate [message #1022073 is a reply to message #677404]

Thu, 21 March 2013 04:34

Eclipse User

Actually, you need seperate the image rotate and resize, the code would be different, try this sample code of image rotation.
Bitmap LoadImage = new Bitmap(@"C:\\1.bmp");
Graphics rotate = Graphics.FromImage(LoadImage);
rotate.TranslateTransform((float)bmp.Width / 2, (float)bmp.Height / 2);
rotate.RotateTransform(rotationAngle);
rotate.TranslateTransform(-(float)bmp.Width / 2, -(float)bmp.Height / 2);
rotate.InterpolationMode = InterpolationMode.HighQualityBicubic;
rotate.DrawImage(img, new Point(0, 0));
rotate.Dispose();

Re: Image resize and rotate [message #1048332 is a reply to message #677404]

Wed, 24 April 2013 06:16

Eclipse User

resize image example
Imports System.IO
Imports System.Drawing.Printing
Imports RasterEdge.Imaging
Imports RasterEdge.Imaging.Processing

Dim Image As New RasterEdgeImaging()

Private Shared Function ResizeImage() As Image
If True Then
Dim LoadImage As New Bitmap("C:\\1.bmp")
Dim newsize As Size = New size(width, height)
Dim newsize As e.g.Size = New size(150, 250)
End IfEnd Function
Image.ResizeImage (@"C:\\1.bmp", new size(150,250))

Re: Image resize and rotate [message #1050355 is a reply to message #1048332]

Fri, 26 April 2013 23:23

Eclipse User

this is image rotate.
Imports System.IO
Imports System.Drawing.Printing
Imports RasterEdge.Imaging
Imports RasterEdge.Imaging.Processing

Dim Image As New RasterEdgeImaging()

Public Sub RotateImage()
If True Then
Dim LoadImage As New Bitmap("C:\\1.bmp")
Dim rotate As Graphics = Graphics.FromImage(LoadImage)
rotate.TranslateTransform(CType(bmp.Width, Single) / 2, CType(bmp.Height, Single) / 2)
rotate.RotateTransform(rotationAngle)
rotate.TranslateTransform(-CType(bmp.Width, Single) / 2, -CType(bmp.Height, Single) / 2)
rotate.InterpolationMode = InterpolationMode.HighQualityBicubic
rotate.DrawImage(img, New Point(0, 0))
rotate.Dispose()
Return LoadImage()
End If
End Sub

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