Just wanted to confirm that this is a repost of the previous thread?
http://lists.apple.com/archives/cocoa-dev/2010/Oct/msg00117.html
--Kyle Sluder
On Tue, Oct 5, 2010 at 2:07 AM, Amy Heavey <a...@willowtreecrafts.co.uk> wrote:
> I've got two float values (x and y) that I'm using to change the coordinates
> of a drawing action that is being looped through. I can add a value to x and
> it draws the next image along, but I want to test the value of x and if it
> is out of bounds I want to reset it to zero and increase y, so I get a grid
> of images drawn.
>
> For some reason, even though I can do
> x = x+128;
> and it moves the image accross, x seems to be null so I can't test against
> it, my if statement ' if (x > 300){' always fails.
>
> This must be something really simple I just can't see it this morning? I'd
> appreciate any help.
>
> Many Thanks
>
> Amy
>
> Full code being used:
> - (IBAction)generateKitImages:(id)sender;
> {
> NSObject *kit;
> kit = [[kits selectedObjects] objectAtIndex:0];
>
> NSString* fileName = [[kit valueForKey:@"kitName"]
> stringByAppendingString:@".jpg"];
> NSString* kitimagePath = [[[[self applicationSupportFolder]
> stringByAppendingPathComponent:@"images"]
> stringByAppendingPathComponent:@"kit"]
> stringByAppendingPathComponent:fileName];
> //NSLog(@"Kit Image Path: %@", kitimagePath);
> //create new image 300px square
> NSImage *targetImage;
> NSSize targetSize = NSMakeSize (300, 300);
> targetImage = [[NSImage alloc] initWithSize:targetSize];
>
>
> //select all images for kit
> NSArray* kitImages = [kit
> valueForKeyPath:@"kitItems.kitItemProduct.productImage"];
>
> //set coordinates to x,y -> 0,0 to start
> float x = 0;
> float y = 0;
> //for each image
> NSEnumerator *imageLoop = [kitImages objectEnumerator];
> NSString *imgPath;
> while ((imgPath = [imageLoop nextObject])) {
> NSImage *img = [[NSImage
> alloc]initWithContentsOfFile:imgPath];
> //NSLog(@"Image: %@",img);
> //resize to 100px high
> //get original size
> //NSSize *origSize;
> //origSize = [img size];
> //calculate scale factor
> //[img setScalesWhenResized: YES];
> //[img setSize: NSMakeSize (100., 100.)];
>
> //apply image to view
> [targetImage lockFocus];
> [img drawInRect:NSMakeRect(x,y,100,100)
> fromRect:NSMakeRect(x,y,100,100)
> operation:NSCompositeCopy
> fraction:1];
>
> [targetImage unlockFocus];
>
> //set new coordinates
> x = x+100;
>
> //if coordinates are too wide, start new row - if x>300,
> reset x to 0 and add 100 to y
> if(x > 300){
> x = 0;
> y = y+100;
> }
>
> }
> //apply kit logo to view
> //apply kit date (text) to view
> //save files out
> //create a NSBitmapImageRep
> NSBitmapImageRep *bmpImageRep = [[NSBitmapImageRep
> alloc]initWithData:[targetImage TIFFRepresentation]];
> //add the NSBitmapImage to the representation list of the target
> [targetImage addRepresentation:bmpImageRep];
>
> //get the data from the representation
> NSData *data = [bmpImageRep representationUsingType: NSJPEGFileType
>
> properties: nil];
>
> //write the data to a file
> [data writeToFile: kitimagePath
> atomically: NO];
> //link images to kit
> [kit setValue:kitimagePath forKey:@"kitImage"];
> }
>
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