2014/10/15 下午 10:10:01

iphone Programming Glossary: heightinpoints

iPhone take augmented reality screenshot with AVCaptureVideoPreviewLayer

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

data in PIXELS Create a graphics context with the target size measured in POINTS NSInteger widthInPoints NSInteger heightInPoints if NULL UIGraphicsBeginImageContextWithOptions On iOS 4 and later use UIGraphicsBeginImageContextWithOptions to take the.. snapshot when its value is greater than 1.0 CGFloat scale eaglview.contentScaleFactor widthInPoints width scale heightInPoints height scale UIGraphicsBeginImageContextWithOptions CGSizeMake widthInPoints heightInPoints NO scale else On iOS prior.. widthInPoints width scale heightInPoints height scale UIGraphicsBeginImageContextWithOptions CGSizeMake widthInPoints heightInPoints NO scale else On iOS prior to 4 fall back to use UIGraphicsBeginImageContext widthInPoints width heightInPoints height..