2014/10/15 下午 10:10:11

iphone Programming Glossary: imagerect

http://stackoverflow.com/questions/1698971/uiimage-color-changing

desire. Desaturate UIImage getImageWithUnsaturatedPixelsOfImage UIImage image const int RED 1 GREEN 2 BLUE 3 CGRect imageRect CGRectMake 0 0 image.size.width 2 image.size.height 2 int width imageRect.size.width height imageRect.size.height uint32_t.. image const int RED 1 GREEN 2 BLUE 3 CGRect imageRect CGRectMake 0 0 image.size.width 2 image.size.height 2 int width imageRect.size.width height imageRect.size.height uint32_t pixels uint32_t malloc width height sizeof uint32_t memset pixels 0 width.. 2 BLUE 3 CGRect imageRect CGRectMake 0 0 image.size.width 2 image.size.height 2 int width imageRect.size.width height imageRect.size.height uint32_t pixels uint32_t malloc width height sizeof uint32_t memset pixels 0 width height sizeof uint32_t CGColorSpaceRef..

Using CGContext to display a sprite sheet iPhone

http://stackoverflow.com/questions/2863626/using-cgcontext-to-display-a-sprite-sheet-iphone

like this CGSize size CGSizeMake xSize ySize UIGraphicsBeginImageContext size CGContextClipToRect spriteSheet.size imageRect spriteSheet drawAtPoint CGPointMake xPos yPos UIImage newImage UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext..

Convert Image to B&W problem CGContext - iPhone Dev

http://stackoverflow.com/questions/3340564/convert-image-to-bw-problem-cgcontext-iphone-dev

the iOS 4. UIImage convertImageToGrayScale UIImage image Create image rectangle with current image width height CGRect imageRect CGRectMake 0 0 image.size.width image.size.height Grayscale color space CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceGray.. context with specified rectangle using previously defined context with grayscale colorspace CGContextDrawImage context imageRect image CGImage Create bitmap image info from pixel data in current context CGImageRef imageRef CGBitmapContextCreateImage.. image THIS IS WHERE REPAIR THE ROTATION PROBLEM Create image rectangle with current image width height CGRect imageRect CGRectMake 0 0 image.size.width image.size.height Grayscale color space CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceGray..

Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints?

http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints

CGSize imageSize CGSizeMake baseImage.size.width imageScaleFactor baseImage.size.height imageScaleFactor CGRect imageRect CGRectMake self.bounds.size.width imageSize.width 2 self.bounds.size.height imageSize.height 2 imageSize.width imageSize.height.. 2 self.bounds.size.height imageSize.height 2 imageSize.width imageSize.height CGContextDrawImage context imageRect baseImage CGImage else @synchronized issue CGPDFPageRef pdfPage CGPDFDocumentGetPage issue.pdfDoc pageIndex 1 pdfToPageTransform..

How to display an image on a MKOverlayView?

http://stackoverflow.com/questions/3891850/how-to-display-an-image-on-a-mkoverlayview

imageData unsigned char malloc height width 4 memset imageData 0 height width 4 Define the rect for the image CGRect imageRect if image.imageOrientation UIImageOrientationUp image.imageOrientation UIImageOrientationDown imageRect CGRectMake 0 0 width.. image CGRect imageRect if image.imageOrientation UIImageOrientationUp image.imageOrientation UIImageOrientationDown imageRect CGRectMake 0 0 width height else imageRect CGRectMake 0 0 height width Create the imagecontext by defining the colorspace.. UIImageOrientationUp image.imageOrientation UIImageOrientationDown imageRect CGRectMake 0 0 width height else imageRect CGRectMake 0 0 height width Create the imagecontext by defining the colorspace and the address of the location to store..

How can I use CGContextDrawTiledImage to tile an image?

http://stackoverflow.com/questions/679925/how-can-i-use-cgcontextdrawtiledimage-to-tile-an-image

point me in the right direction void drawRect CGRect rect CGImageRef image CGImageRetain currentImage.CGImage CGRect imageRect imageRect.origin CGPointMake 160 240 imageRect.size CGSizeMake 320.0 480.0 CGContextRef uiContext UIGraphicsGetCurrentContext.. in the right direction void drawRect CGRect rect CGImageRef image CGImageRetain currentImage.CGImage CGRect imageRect imageRect.origin CGPointMake 160 240 imageRect.size CGSizeMake 320.0 480.0 CGContextRef uiContext UIGraphicsGetCurrentContext CGContextClipToRect.. CGRect rect CGImageRef image CGImageRetain currentImage.CGImage CGRect imageRect imageRect.origin CGPointMake 160 240 imageRect.size CGSizeMake 320.0 480.0 CGContextRef uiContext UIGraphicsGetCurrentContext CGContextClipToRect uiContext CGRectMake..

UIView scaling during animation

http://stackoverflow.com/questions/818207/uiview-scaling-during-animation

CGContextClipToRect context CGRectMake 0.0 0.0 rect.size.width rect.size.height CGContextDrawTiledImage context imageRect imageRef ... Now I am trying to animate the resize of that view. UIView beginAnimations nil context nil UIView setAnimationDuration..

iPhone take augmented reality screenshot with AVCaptureVideoPreviewLayer

http://stackoverflow.com/questions/8980847/iphone-take-augmented-reality-screenshot-with-avcapturevideopreviewlayer

overlayImage UIImage glImage GLView snapshot glView returns an autoreleased image Merge Image and Overlay CGRect imageRect CGRectMake CGFloat 0.0 CGFloat 0.0 glImage.size.width glImage.scale glImage.size.height glImage.scale CGImageRef overlayCopy.. 8 int glImage.size.width 4 glImage.scale colorSpace kCGImageAlphaPremultipliedLast CGContextDrawImage context imageRect glImage.CGImage CGContextDrawImage context imageRect overlayCopy CGImageRef newImage CGBitmapContextCreateImage context.. kCGImageAlphaPremultipliedLast CGContextDrawImage context imageRect glImage.CGImage CGContextDrawImage context imageRect overlayCopy CGImageRef newImage CGBitmapContextCreateImage context UIImage combinedViewImage UIImage alloc initWithCGImage..

Converting a UIImage black'n white and not grayscale for using tesseract

http://stackoverflow.com/questions/9992078/converting-a-uiimage-blackn-white-and-not-grayscale-for-using-tesseract

UIImage grayishImage UIImage i Create a graphic context. UIGraphicsBeginImageContextWithOptions i.size YES 1.0 CGRect imageRect CGRectMake 0 0 i.size.width i.size.height Draw the image with the luminosity blend mode. i drawInRect imageRect blendMode.. CGRect imageRect CGRectMake 0 0 i.size.width i.size.height Draw the image with the luminosity blend mode. i drawInRect imageRect blendMode kCGBlendModeLuminosity alpha 1.0 Get the resulting image. UIImage filteredImage UIGraphicsGetImageFromCurrentImageContext..