2014/10/15 下午 10:13:40

iphone Programming Glossary: screenwidth

Creating 16:9 Video Rather than 4:3 - AVAsset Writer - iPhone

http://stackoverflow.com/questions/10358086/creating-169-video-rather-than-43-avasset-writer-iphone

you void createVideoFromStillImage Set the size according to the device type iPhone or iPad . CGSize size CGSizeMake screenWidth screenHeight NSString betaCompressionDirectory NSHomeDirectory stringByAppendingPathComponent @ Documents IntroVideo.mov..

Scaling AR pictures based on the distance from the camera

http://stackoverflow.com/questions/11913355/scaling-ar-pictures-based-on-the-distance-from-the-camera

the ratio in a kind of cranky way double GetCCDToScreenSizeRatio double sensorWidth double sensorHeight double screenWidth double screenHeight return sqrt screenWidth screenHeight sqrt sensorWidth sensorHeight Then the ratio I get can be treated.. GetCCDToScreenSizeRatio double sensorWidth double sensorHeight double screenWidth double screenHeight return sqrt screenWidth screenHeight sqrt sensorWidth sensorHeight Then the ratio I get can be treated as a multiplier. First I calculate a dimension.. double physicalObjectDimension_m double distanceFromPhysicalObject_m double screenWidth UIScreen mainScreen .bounds.size.width double screenHeight UIScreen mainScreen .bounds.size.height return CalculatePhysicalObjectImageDimensionOnScreen..

How to get screen size using code?

http://stackoverflow.com/questions/3635483/how-to-get-screen-size-using-code

on an instance of UIScreen CGRect screenBound UIScreen mainScreen bounds CGSize screenSize screenBound.size CGFloat screenWidth screenSize.width CGFloat screenHeight screenSize.height Most people will want the main screen if you have a device attached..