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I've implemented a camera into my app and I wanted to know what CGinterpolationquality is. There isn't much documentation on what it does.
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Interpolation quality is a graphics state parameter that provides a hint for the level of quality to use for image interpolation (for example, when scaling the image). Not all contexts support all interpolation quality levels.
The CGContext type represents a Quartz 2D drawing destination. A graphics context contains drawing parameters and all device-specific information needed to render the paint on a page to the destination, whether the destination is a window in an application, a bitmap image, a PDF document, or a printer.
From the CGContext Reference:
Returns the current level of interpolation quality for a graphics context.
Interpolation quality is a graphics state parameter that provides a hint for the level of quality to use for image interpolation (for example, when scaling the image). Not all contexts support all interpolation quality levels.
Furthermore...
CGInterpolationQuality
Levels of interpolation quality for rendering an image.
enum CGInterpolationQuality {
kCGInterpolationDefault = 0,
kCGInterpolationNone = 1,
kCGInterpolationLow = 2,
kCGInterpolationMedium = 4,
kCGInterpolationHigh = 3
};
typedef enum CGInterpolationQuality CGInterpolationQuality;
kCGInterpolationDefault: The default level of quality.
kCGInterpolationNone: No interpolation.
kCGInterpolationLow: A low level of interpolation quality. This setting may speed up image rendering.
kCGInterpolationMedium: A medium level of interpolation quality. This setting is slower than the low setting but faster than the high setting.
kCGInterpolationHigh: A high level of interpolation quality. This setting may slow down image rendering.
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