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Re: Rotating Images....

On 27. Jun 2004, at 2:06, Jerry LeVan wrote:

About all I can do is produce "kaleidoscopes"...

NSSize imageSize; // Size of the image to draw

NSSize scaledRect;
NSImage *tmpImage=NULL;
float scaleFactor=[theSlider floatValue];
tmpImage = [anImage copy];

I think this should be:
tmpImage = [[NSImage alloc] initWithSize:imgSize];

Where imgSize should probably be (if you also wanted to scale):
NSSize imgSize = [anImage size];
imgSize.width = ceilf(imgSize.width * scaleFactor);
imgSize.height = ceilf(imgSize.height * scaleFactor);

Because you want a blank image to draw the rotated version into (by using copy you basically draw on top of the old image).

Btw: the save/restore graphics context is not necessary, since a new context is setup when you send lockFocus to the image.
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 >Rotating Images.... (From: Jerry LeVan <email@hidden>)



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