VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, 5, 6, 7, 8, [9], 10 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 07:47:51 11/08/00 Wed
Author: Michel
Subject: Re: Rotating image
In reply to: John Taylor 's message, "Rotating image" on 10:23:43 11/07/00 Tue


Hi John,

Yes, it is possible to rotate an image without displaying it, nor using the TImageScrollBox. With multipage files though, you will need to create a new file, as you can only append to the end of a file. Here is a basic structure to do this:

var

SourceGraphic : TTiffGraphic;
DestGraphic : TTiffGraphic;

SourceFile : TFileStream;
DestFile : TFileStream;

begin

SourceFile := TFileStreamCreate.Create(..., fmOpenRead);
DestFile := TFileStream.Create(..., fmCreate);

for ImageNo := 1 to SourceFile.GetImageCount(SourceFile) do
begin
SourceGraphic.SingleLoadFromStream( SourceFile, ImageNo );

create a TRotateTransform with appropriate angle

RotateTransform.ApplyOnDest( SourceGraphic, DestGraphic );

DestGraphic.AppendToStream(DestFile);

end;

> Hello Michel,
>
> I am a new user. Is there an easy way to rotate a
> particular page in a multi-page tiff and then save the
> result without displaying the image at all or using
> ImageScrollbox at all ?
>
> thanks.

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:

  • Re: Rotating image -- Chinthaka, 06:16:47 12/18/00 Mon
  • Re: Rotating image -- Michel, 07:27:25 12/18/00 Mon
    [ Contact Forum Admin ]

    Forum timezone: GMT-5
    VF Version: 3.00b, ConfDB:
    Before posting please read our privacy policy.
    VoyForums(tm) is a Free Service from Voyager Info-Systems.
    Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.