Re: Change Opacity of Image

2009-08-06 Thread Rob Keniger
On 07/08/2009, at 7:10 AM, Pierce Freeman wrote: Do you have one that you can suggest? It doesn't have to do much - just change the opacity. Just use an NSImage and -drawAtPoint:fromRect:operation:fraction: and set a value for the fraction (i.e. the opacity). -- Rob Keniger __

Re: Change Opacity of Image

2009-08-06 Thread Pierce Freeman
Hi Douglas: Do you have one that you can suggest? It doesn't have to do much - just change the opacity. On 8/6/09 12:46 PM, "douglas welton" wrote: > Core Image Filters are your friend. > > Check out the CIFilter reference documentation and you'll find bunches > of filters to handle composit

Re: Change Opacity of Image

2009-08-06 Thread Pierce Freeman
Hi Pavel: Thanks for the suggestion. How would you suggest I get the NSImage to the screen, a custom NSView, NSImageWell, etc? On 8/6/09 10:29 AM, "Pavel Dudrenov" wrote: > Look into NSImage and NSCompositingOperation. > > On Thu, Aug 6, 2009 at 10:17 AM, Pierce Freeman > wrote: >> Hi Every

Re: Change Opacity of Image

2009-08-06 Thread douglas welton
Core Image Filters are your friend. Check out the CIFilter reference documentation and you'll find bunches of filters to handle compositing. On Aug 6, 2009, at 1:29 PM, Pavel Dudrenov wrote: Look into NSImage and NSCompositingOperation. On Thu, Aug 6, 2009 at 10:17 AM, Pierce Freeman wro

Re: Change Opacity of Image

2009-08-06 Thread Pavel Dudrenov
Look into NSImage and NSCompositingOperation. On Thu, Aug 6, 2009 at 10:17 AM, Pierce Freeman wrote: > Hi Everyone: > > I am looking for an easy way to fade into one photo from another photo. In > other words, from the middle "point", you can see both of the photos on top > of each other to com

Change Opacity of Image

2009-08-06 Thread Pierce Freeman
Hi Everyone: I am looking for an easy way to fade into one photo from another photo. In other words, from the middle "point", you can see both of the photos on top of each other to compare the changes. I am currently using Quartz to do this, but am running into a lot of trouble with that, so I a