I'm not combining two or more images, I merely would like a single uiimage in a uiimageview to have a blend mode applied to it that works so that no matter what is beneath it, there will be a blend mode applied.
Is this not possible? On Fri, Jan 22, 2010 at 10:43 AM, Bertil Holmberg <[email protected]>wrote: > Here is a snippet that I saved for another day, perhaps it will get you > going? > > Regards, > Bertil > > - (UIImage *)blendOverlay:(UIImage *)topImage withBaseImage:(UIImage > *)baseImage toSize:(CGFloat)imageSize > { > UIGraphicsBeginImageContext(CGSizeMake(imageSize, imageSize)); > [baseImage drawInRect:CGRectMake(0.0, 0.0, imageSize, imageSize)]; > [topImage drawInRect:CGRectMake(0.0, 0.0, imageSize, imageSize) > blendMode:kCGBlendModeNormal alpha:0.5]; > UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); > UIGraphicsEndImageContext(); > > return image; > } > > > Okay, how would I go about doing that? > > > > On Fri, Jan 22, 2010 at 9:52 AM, Luke the Hiesterman <[email protected] > >wrote: > > > >> You should perform whatever blending you need to do on the image itself > to > >> create a new image which you can then just put into a UIImageView like > you > >> would any other image. This way, you only have to blend once, and then > it's > >> just image that can be straight drawn rather than performing a blending > >> algorithm every time your image has to draw. > > > > _______________________________________________ > > Cocoa-dev mailing list ([email protected]) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/edolecki%40gmail.com > > This email sent to [email protected] > -- http://ericd.net Interactive design and development _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
