U++ framework
Do not panic. Ask here before giving up.

Home » U++ Library support » Draw, Display, Images, Bitmaps, Icons » JPEG Images do not get rotated correctly
Re: JPEG Images do not get rotated correctly [message #50374 is a reply to message #50372] Thu, 04 October 2018 18:13 Go to previous messageGo to previous message
Oblivion is currently offline  Oblivion
Messages: 1272
Registered: August 2007
Senior Contributor
Hello Tom,

Well, adding this to Raster is not so trivial, as -AFAIK- this EXIF orientation tag is currently jpeg specific and Raster::GetImage is not virtual.

I'd rather add this as a JPGRaster method.

Image JPGRaster::GetNormalizedImage()
{
	Value n = GetMetaData("orientation");
	Image img(GetImage());

	if(!IsNull(n))
		switch((int)n){
			case 2:
				img = MirrorHorz(img);
				break;
			case 3:
				img = Rotate180(img);
				break;
			case 4:
				img = MirrorVert(img);
				break;
			case 5:
				img = RotateAntiClockwise(MirrorHorz(img));
				break;
			case 6:
				img = RotateClockwise(img);
				break;
			case 7:
				img = RotateClockwise(MirrorHorz(img));
				break;
			case 8:
				img = RotateAntiClockwise(img);
				break;
			default:
				// Natural orientation
				break;
		}
	return pick(img);
}



Of course, it is up to Mirek and/or the developer(s) of the plugin to decide. Smile


Best regards,
Oblivion


[Updated on: Thu, 04 October 2018 19:00]

Report message to a moderator

 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: DrawArc not working in GTK mode
Next Topic: RescaleFilter.cpp: Implicit conversion from bool to double
Goto Forum:
  


Current Time: Sat Jul 18 23:06:16 GMT+2 2026

Total time taken to generate the page: 0.00662 seconds