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2014/10/15 ¤U¤È 10:11:19
iphone Programming Glossary: maskingCropping image with transparency in iPhone http://stackoverflow.com/questions/10810798/cropping-image-with-transparency-in-iphone image with transparency in iPhone I am working on Jigsaw type of game where i have two images for masking I have implemented this code for masking UIImage maskImage UIImage image withMaskImage UIImage maskImage CGColorSpaceRef.. in iPhone I am working on Jigsaw type of game where i have two images for masking I have implemented this code for masking UIImage maskImage UIImage image withMaskImage UIImage maskImage CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGImageRef.. theImage UIImage imageWithCGImage newImage CGImageRelease newImage return theImage This is final result i got after masking. now i would like to crop image in piece like and and so on parametrically crop an image by transparency . if any one has..
http://stackoverflow.com/questions/1106861/round-corners-on-uitableview are always round regardless of scroll position. I saw another discussion about doing this to a UIImage that suggested masking it with another image. I'm not sure if this would work because I need taps to pass through to the table. This isn't isn't..
Any idea why this image masking code does not work? http://stackoverflow.com/questions/1133248/any-idea-why-this-image-masking-code-does-not-work idea why this image masking code does not work I have this code to mask an image. Basically I only work with PNG images. So I have a 300x400 PNG image.. when putting them into an UIImageView. Then I create an UIImage out of them which contains the results of the masking operation with this code UIImage maskImage UIImage image withMask UIImage maskImage CGImageRef maskRef maskImage.CGImage.. UIColor clearColor testImageView.opaque NO After all that the coloredImagePNG24.png stays totally intact as it is. No masking is happening. But now the weird thing is If I turn that around i.e. use this image as the mask and the mask as the color..
http://stackoverflow.com/questions/1215869/thumbnail-view-of-images UIGraphicsEndImageContext return newImage Finally here's a previous question on masking out round corners on an image similar to the app icons used on the home screen. Added Using an image's built in thumbnail..
iPhone development: pointer being freed was not allocated http://stackoverflow.com/questions/1424210/iphone-development-pointer-being-freed-was-not-allocated mask.CGImage Draw the base color layer CGContextDrawImage context2 rect MaskedImage Get the result of the masking UIImage overlayMasked UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext UIGraphicsBeginImageContext CGSizeMake..
http://stackoverflow.com/questions/2570653/iphone-clip-image-with-path there is an example on how to draw a circle clipped by a rectangular path p.37 and there is also a chapter on image masking with existing image as stencil Ch.10 . But I'm still not sure about how to clip an existing image using path. Is there any..
Why is CGImageCreateWithMaskingColors() returning nil in this case? http://stackoverflow.com/questions/3563770/why-is-cgimagecreatewithmaskingcolors-returning-nil-in-this-case the same problem. The CGImageRef you are creating has only 6 bytes for each pixel with byte with no alpha channel. The masking function needs a CGImageRef with 8 bytes for each pixel only 6 of them used with no alpha channel. At least I think this..
Core Animation CALayer mask animation performance http://stackoverflow.com/questions/4520941/core-animation-calayer-mask-animation-performance where you just supply a PNG for the icon and it uses the alpha channel to create the normal and highlighted states by masking a background image. I accomplished this with CALayer's mask property Inside a UIView subclass' init method... Create the..
http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview corners share improve this question as far as I know if you also need to mask the subviews you could use CALayer masking. There are 2 ways to do this. The first one is a bit more elegant the second one is a workaround but it's also fast. Both.. this. The first one is a bit more elegant the second one is a workaround but it's also fast. Both are based on CALayer masking. I've used both methods in a couple of projects last year then I hope you can find something useful. Solution 1 First of..
layer.renderInContext doesn't take layer.mask into account? http://stackoverflow.com/questions/4896296/layer-renderincontext-doesnt-take-layer-mask-into-account doesn't take a layermask into account Current behavior the photo saves and I see mosaicLayer without the masking effect of maskLayer. Expected behavior the photo saves and I see the image in my view with on top of that a masked mosaicLayer...
http://stackoverflow.com/questions/5757386/how-to-mask-an-uiimageview same size. ... UIImage image UIImage imageNamed @ dogs.png UIImage mask UIImage imageNamed @ mask.png result of the masking method UIImage maskedImage self maskImage image withMask mask ... UIImage maskImage UIImage image withMask UIImage maskImage..
http://stackoverflow.com/questions/5880597/custom-image-mask-in-ios image mask in iOS I have a issue with masking images. I do game puzzle and have to make custom images. I found and tried 2 way of custom cropping Using CALayer.mask property...
How to implement alpha gradient on a image? http://stackoverflow.com/questions/5908731/how-to-implement-alpha-gradient-on-a-image iphone ios gradient alpha quartz 2d share improve this question You can use CGImageCreateWithMask to apply a masking image to it. You could generate an appropriate mask simply enough by drawing to a greyscale or alpha only CGBitmapContext.. with CGContextDrawLinearGradient . If it's being displayed as the content of a CALayer you could apply an appropriate masking layer to the parent layer's mask property. You could use a CAGradientLayer with appropriate colors to create this mask...
Crash when adding persistent store (iCloud enabled) in app delegate http://stackoverflow.com/questions/8021753/crash-when-adding-persistent-store-icloud-enabled-in-app-delegate userInfo nil return __persistentStoreCoordinator myAppKey and bundleIdentifier are actual values of course. I am just masking them for the purpose of sharing this code. I know that some people are still having troubles with this and may be using..
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