Two problems when do large long image processing

I encounter two strange problems when I do large long image processing

(Image size: 19.68inch*393.7 inch 100 dpi)

1. I can't rotate this long image, but I could rotate small image.

The error code is:

Error Stack

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1 Aurigma.GraphicsMill The specified pixel format is not supported.

Call Stack

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at Aurigma.GraphicsMill.Thread.FireStoppedEvent(Object object, ErrorEventArgs args)

at Aurigma.GraphicsMill.Thread.TimerEventProcessor()

at Aurigma.GraphicsMill.Thread.ChangeActivityStatus(ActivityStatus status)

at Aurigma.GraphicsMill.Thread.EntryPoint()

at Aurigma.GraphicsMill.Thread.Start()

at Aurigma.GraphicsMill.Transforms.BitmapTransform.ApplyTransform(Bitmap bitmap)

at Aurigma.GraphicsMill.TransformsProvider._Rotate(Single angle)

at Aurigma.GraphicsMill.TransformsProvider.Rotate(Single angle)

2. I can't draw a rectangle region cover this long image. The largest size I could draw is

Height: 265.55 inch. When I want to resize the rectangle region into a larger height, nothing happens, it's still 265.55 inch. But if I change the code manually, for example set the height into a large number, it could show up a much longer rectangle region.

These two problems are really strange, I have spent one day, but no progress.

Thank you,

Edited by moderator Tuesday, February 15, 2011 1:40:37 PM(UTC)  | Reason: Not specified

Image2 could not be rotated. (Image2 is too large to upload on your website, this is a part of image2, can't rotate.)

2. Only could select a rectangle region has 266.65 inch on image 2. The large long image can't upload, you could try to make a large long image based on image2.

Sorry, I can't share the application. The software is large, this is just a function inside to select region.

Thank you for your reply.

Edited by user Wednesday, February 16, 2011 5:55:35 AM(UTC)  | Reason: Not specified

shengyunyuxi attached the following image(s):

I have checked your demo source code.

For format8bppindexed:

RotateArbitraryToolStripMenuItem.Enabled = false;

Rotate90ToolStripMenuItem.Enabled = true;

Rotate180ToolStripMenuItem.Enabled = true;

Rotate270ToolStripMenuItem.Enabled = true;

For format24bpprgb:

RotateArbitraryToolStripMenuItem.Enabled = true;

Rotate90ToolStripMenuItem.Enabled = true;

Rotate180ToolStripMenuItem.Enabled = true;

Rotate270ToolStripMenuItem.Enabled = true;

How could I rotate arbitrary on format8bppindexed?

For 2 and 3, I will check later and reply.

In Main demo, I can't rotate arbitrary angle.

Attached you could find the screenshot.

Thank you,

File Attachment(s):

New Bitmap Image (4).bmp (3,001kb) downloaded 7 time(s).

I discussed on it with our GM developer. Unfortunately, images withformat8bppindexed format cannot be rotated in angle not divisible by 90 degrees. It causes that analysis effect will poor quality after rotation in any angle.