Re: Getting Started w/ GNUSTEP-GUI

[Quentin Mathé]

Le 31 janv. 06 à 08:28, Stephen Sebeny a écrit :

> I was wondering if anyone can be a bit more specific on this. Of  
> course
> if its a tool I'm not going to use anything that expects to be able  
> to find
> bundle resources, I get that. Basically what I want to do is make a  
> tool
> that is given a path to a folder as a command line argument, then  
> loads all
> the images in that folder into NSImages, then extracts features  
> from those
> images. That is, it loops over all the pixels of the image with the  
> getPixel
> method of NSBitmapImageRep and pulls out color histogram data and  
> writes it
> to a file. I all ready have a program that does this on a Mac, but  
> I need to
> move it to Solaris, thus trying to get the GnuStep GUI stuff set-up  
> since
> the NSImage classes are in the GUI library. Although, I just  
> noticed that
> the GnuStep version of the NSBitmapImageRep class seems to be  
> missing the
> getPixel method?! Am I missing something here? That seems like *THE*
> essential method of the class, and it just doesn't have it. (?)

It isn't probably the essential method of the class, because this  
method and related ones have only been introduced with Mac OS X 10.4 :-)
However I admit, it may become an essential method and it is a very  
welcome extension.

From NSBitmapImageRep Cocoa header :

#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
- (void)setColor:(NSColor*)color atX:(int)x y:(int)y;
- (NSColor*)colorAtX:(int)x y:(int)y;

- (void)getPixel:(unsigned int[])p atX:(int)x y:(int)y;
- (void)setPixel:(unsigned int[])p atX:(int)x y:(int)y;
#endif

Quentin.

--
Quentin Mathé
qmathe@club-internet.fr