Quote from: Zack Green on 14 January 2023, 03:29:56I have just setup imaging library on my RAD STUDIO 10.2 setup, however when trying to use the VCL demo I get errors, Has anybody eles had this problem? if so how did you solve it?

Bump.

I have just setup imaging library on my RAD STUDIO 10.2 setup, however when trying to use the VCL demo I get errors, Has anybody eles had this problem? if so how did you solve it?

You cannot get this info from Imaging alone.
You can try something like CCR.EXIF for Delphi or fpexif for FPC/Lazarus.

Hi,
yes that would be pretty quick change to support loading only single user-specified page from multi-page image.
Some long missing "basic info about image without decoding all the pixels and stuff" would be useful
to first get you the number of pages in a file.

Hi, you can get the latest code and report issues here: https://github.com/galfar/imaginglib

up

Please, tell me how to get orientation from EXIF?
Thanx

Hello, Galfar. I like your library for its accessibility in lazarus and ease of use.
However, I have a few suggestions. One of them is:
Is it possible to download multi-page documents (tiff) one page at a time. For example, my tiff files may contain about 180 pages scanned in high resolution. When downloading a file less than 1mb in size, several tens of megabytes of RAM is consumed. Since only 1 is needed for the display..3 pages, I could dynamically load the necessary ones.

I downloaded imaginglib0264.zip and tried to compile it using BuildLibraryFPC.sh.  Tje const declarations in the function TPCXFileFormat.LoadData, namely:
function TPCXFileFormat.LoadData(Handle: TImagingHandle;
  var Images: TDynImageDataArray; OnlyFirstLevel: Boolean): Boolean;
const
  ifMono: TImageFormat = TImageFormat(250);
  ifIndex2: TImageFormat = TImageFormat(251);
  ifIndex4: TImageFormat = TImageFormat(252);

generates the error messages:

ImagingPcx.pas(94,26) Warning: range check error while evaluating constants (250 must be between 0 and 225)
ImagingPcx.pas(94,43) Error: range check error while evaluating constants (250 must be between 0 and 225)
ImagingPcx.pas(95,28) Warning: range check error while evaluating constants (251 must be between 0 and 225)
ImagingPcx.pas(95,45) Error: range check error while evaluating constants (251 must be between 0 and 225)
ImagingPcx.pas(96,28) Warning: range check error while evaluating constants (252 must be between 0 and 225)
ImagingPcx.pas(96,45) Error: range check error while evaluating constants (252 must be between 0 and 225)
ImagingPcx.pas(379) Fatal: There were 3 errors compiling module, stopping
Fatal: Compilation aborted

I am using the Free Pascal Compiler (fpc) for x86_64 version 3.2.0 (released 2021/04/29) on Linux.

Is there anywhere to report bugs other than in this forum?

I was looking in to the Vampyre Imaging Library can it support the ide off making a scratching game.

if you have two pictures lying on top of each other .and you want to erase some of the picture using freehand drawing

like when making a scratching game. (it is like freehand drawing using Transparency) and any sample to do this