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2014/10/15 ¤U¤È 10:05:04
iphone Programming Glossary: cgimagecreatewithimageinrectcreate UIImageView with portion of image file http://stackoverflow.com/questions/1049102/create-uiimageview-with-portion-of-image-file UIImage img UIImage imageNamed @ myImage.jpg CGRect imgFrame CGRectMake x y tileWidth tileHeight CGImageRef imageRef CGImageCreateWithImageInRect img CGImage imgFrame UIImage subImage UIImage imageWithCGImage imageRef CGImageRelease imageRef share improve this answer..
http://stackoverflow.com/questions/1317978/iphone-get-camera-preview of the current screen extern CGImageRef UIGetScreenImage CGImageRef cgoriginal UIGetScreenImage CGImageRef cgimg CGImageCreateWithImageInRect cgoriginal rect UIImage viewImage UIImage imageWithCGImage cgimg CGImageRelease cgoriginal CGImageRelease cgimg A problem..
Blur an image of specific part (rectangular, circular)? http://stackoverflow.com/questions/14107979/blur-an-image-of-specific-part-rectangular-circular mark Cropping the Image UIImage croppIngimageByImageName UIImage imageToCrop toRect CGRect rect CGImageRef imageRef CGImageCreateWithImageInRect imageToCrop CGImage rect UIImage cropped UIImage imageWithCGImage imageRef CGImageRelease imageRef return cropped Method..
Cropping an image in iOS using OpenCV face detection http://stackoverflow.com/questions/14756505/cropping-an-image-in-ios-using-opencv-face-detection with this code CGRect cropRect CGRectMake faces i .x faces i .y faces i .width faces i .width CGImageRef cropped_img CGImageCreateWithImageInRect self.storeImage.CGImage cropRect UIImage img UIImage imageWithCGImage cropped_img UIImageWriteToSavedPhotosAlbum img self.. this question what about this UIImage getSubImageFrom UIImage imageToCrop WithRect CGRect rect CGImageRef imageRef CGImageCreateWithImageInRect imageToCrop CGImage rect UIImage cropped UIImage imageWithCGImage imageRef CGImageRelease imageRef return cropped share..
http://stackoverflow.com/questions/158914/cropping-a-uiimage There isn't a simple class method to do this but there is a function that you can use to get the desired results CGImageCreateWithImageInRect CGImageRef CGRect will help you out. Here's a short example using it CGImageRef imageRef CGImageCreateWithImageInRect largeImage.. CGImageCreateWithImageInRect CGImageRef CGRect will help you out. Here's a short example using it CGImageRef imageRef CGImageCreateWithImageInRect largeImage CGImage cropRect or use the UIImage wherever you like UIImageView setImage UIImage imageWithCGImage imageRef..
iPhone - How do you make a resizable rectangle for cropping images? http://stackoverflow.com/questions/1971542/iphone-how-do-you-make-a-resizable-rectangle-for-cropping-images on UIImage and pretty simple @implementation UIImage Resize UIImage croppedImage CGRect bounds CGImageRef imageRef CGImageCreateWithImageInRect self CGImage bounds UIImage croppedImage UIImage imageWithCGImage imageRef CGImageRelease imageRef return croppedImage .....
http://stackoverflow.com/questions/2635371/how-to-crop-the-uiimage middle part of UIImage iphone uiimage share improve this question Try something like this CGImageRef imageRef CGImageCreateWithImageInRect largeImage CGImage cropRect image UIImage imageWithCGImage imageRef CGImageRelease imageRef Note cropRect is smaller rectangle..
Using CGContext to display a sprite sheet iPhone http://stackoverflow.com/questions/2863626/using-cgcontext-to-display-a-sprite-sheet-iphone Thanks Mike iphone objective c sprite cgcontext share improve this question I think the call you want to use is CGImageCreateWithImageInRect newImage UIImage imageWithCGImage CGImageCreateWithImageInRect spriteSheet CGImage imageRect share improve this answer..
How use CGImageCreateWithImageInRect for iPhone 4 (HD)? http://stackoverflow.com/questions/3150364/how-use-cgimagecreatewithimageinrect-for-iphone-4-hd use CGImageCreateWithImageInRect for iPhone 4 HD I use the following code to getting images from the sprite. And it works fine everywhere except the iPhone.. And it works fine everywhere except the iPhone 4 HD version . UIImage croppedImage CGRect rect CGImageRef image CGImageCreateWithImageInRect self CGImage rect UIImage result UIImage imageWithCGImage image CGImageRelease image return result The iPhone 4 automatically.. taking into account the different scales for iPhone 3G s and the iPhone 4 I have read this document but about the use CGImageCreateWithImageInRect here says nothing. iphone core graphics iphone 4 high resolution share improve this question From what I can tell the..
how to crop image in to pieces programmatically http://stackoverflow.com/questions/4743242/how-to-crop-image-in-to-pieces-programmatically is also a solution that detects the piece of the picture that was tapped on. The idea is to take a UIImage and use CGImageCreateWithImageInRect to crop out pieces. From the cropped piece create a new UIImage and place it in a UIImageView. In order to get the tap gesture.. whole.jpg I know this image is 300x300 int partId 0 for int x 0 x 200 x 100 for int y 0 y 200 y 100 CGImageRef cgImg CGImageCreateWithImageInRect whole.CGImage CGRectMake x y 100 100 UIImage part UIImage imageWithCGImage cgImg UIImageView iv UIImageView alloc initWithImage..
iPhone CGContextRef CGBitmapContextCreate unsupported parameter combination http://stackoverflow.com/questions/5545600/iphone-cgcontextref-cgbitmapcontextcreate-unsupported-parameter-combination space kCGImageAlphaLast 288 bytes row. This is the crop method UIImage croppedImage CGRect bounds CGImageRef imageRef CGImageCreateWithImageInRect self CGImage bounds UIImage croppedImage UIImage imageWithCGImage imageRef CGImageRelease imageRef return croppedImage The..
Most efficient way to draw part of an image in iOS http://stackoverflow.com/questions/8035673/most-efficient-way-to-draw-part-of-an-image-in-ios frameOrigin.x rect.origin.x frameOrigin.y rect.origin.y rect.size.width rect.size.height CGImageRef imageRef CGImageCreateWithImageInRect image_.CGImage frameRect CGContextTranslateCTM context 0 rect.size.height CGContextScaleCTM context 1.0 1.0 CGContextDrawImage..
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