Gluing two images together question...
Gluing two images together question...
- Subject: Gluing two images together question...
- From: Jerry LeVan <email@hidden>
- Date: Mon, 17 Dec 2007 19:11:43 -0500
Hi,
I am trying to add a "display two images side by side" feature to
one of my apps.
The following snippet does the job by the resulting image is a
low res image does not zoom without pixelation. Is there a
way to glue two images together into a single image that keeps
the approximate resolution of the components?
In the following code each of tmp1 and tmp2 are jpgs that
can be zoomed a great deal and not show pixelation.
The resulting image "displayed" image winds up have
pixel size = point size. Not good for zooming ;(
Thanks
Jerry
NSImage * tmp1 = [[NSImage alloc] initWithContentsOfFile:
(NSString*) [fileNameList objectAtIndex:slideNumber]];
NSImage * tmp2 = [[NSImage alloc] initWithContentsOfFile:
(NSString*) [fileNameList objectAtIndex:nextSlide]];
int x1 = [tmp1 size].width; int x2 = [tmp2 size].width;
int y1 = [tmp1 size].height; int y2 = [tmp2 size].height;
float newHeight;
if (y1 > y2){
newHeight = y1;
}
else {
newHeight=y2;
}
displayedImage = [[NSImage alloc] initWithSize:
NSMakeSize(x1+x2,newHeight)];
[displayedImage lockFocus];
[tmp1 drawAtPoint:NSMakePoint(0.0,0.0) fromRect:
NSMakeRect(0,0,x1,y1) operation:NSCompositeCopy fraction:1.0];
[tmp2 drawAtPoint:NSMakePoint(x1,0.0) fromRect:
NSMakeRect(0,0,x2,y2) operation:NSCompositeCopy fraction:1.0];
[displayedImage unlockFocus];
//NSLog(@"dispImg=%@" ,displayedImage);
[tmp1 release]; [tmp2 release];
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