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For information about updates to this and other developerdocumentation, view the New & Updated sidebars in subsequent documentationseeds.=====================File: EAGLView.hAbstract: Convenience class that wraps the CAEAGLLayer from CoreAnimation into aUIView subclass.Version: 1.3Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Inc.("Apple") in consideration of your agreement to the following terms, and youruse, installation, modification or redistribution of this Apple softwareconstitutes acceptance of these terms.  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All Rights Reserved.*/#import <UIKit/UIKit.h>#import <OpenGLES/EAGL.h>#import <OpenGLES/EAGLDrawable.h>#import <OpenGLES/ES1/gl.h>#import <OpenGLES/ES1/glext.h>//CLASSES:@class EAGLView;//PROTOCOLS:@protocol EAGLViewDelegate <NSObject>- (void) didResizeEAGLSurfaceForView:(EAGLView*)view; //Called whenever the EAGL surface has been resized@end@protocol EAGLTouchDelegate <NSObject>- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;@end//CLASS INTERFACE:/** EAGLView Class * This class wraps the CAEAGLLayer from CoreAnimation into a convenient UIView subclass. * The view content is basically an EAGL surface you render your OpenGL scene into. * Note that setting the view non-opaque will only work if the EAGL surface has an alpha channel. */@interface EAGLView : UIView{@private	NSString*				_format;	GLuint					_depthFormat;	BOOL					_autoresize;	EAGLContext				*_context;	GLuint					_framebuffer;	GLuint					_renderbuffer;	GLuint					_depthBuffer;	CGSize					_size;	BOOL					_hasBeenCurrent;	id<EAGLViewDelegate>	_delegate;	id<EAGLTouchDelegate>   touchDelegate;}- (id) initWithFrame:(CGRect)frame; //These also set the current context- (id) initWithFrame:(CGRect)frame pixelFormat:(NSString*)format;- (id) initWithFrame:(CGRect)frame pixelFormat:(NSString*)format depthFormat:(GLuint)depth preserveBackbuffer:(BOOL)retained;@property(readonly) GLuint framebuffer;@property(readonly) NSString* pixelFormat;@property(readonly) GLuint depthFormat;@property(readonly) EAGLContext *context;@property BOOL autoresizesSurface; //NO by default - Set to YES to have the EAGL surface automatically resized when the view bounds change, otherwise the EAGL surface contents is rendered scaled@property(readonly, nonatomic) CGSize surfaceSize;@property(assign) id<EAGLViewDelegate> delegate;@property(assign) id<EAGLTouchDelegate> touchDelegate;- (void) setAutoresizesEAGLSurface:(BOOL)autoresizesEAGLSurface;- (void) setCurrentContext;- (BOOL) isCurrentContext;- (void) clearCurrentContext;- (void) swapBuffers; //This also checks the current OpenGL error and logs an error if needed- (CGPoint) convertPointFromViewToSurface:(CGPoint)point;- (CGRect) convertRectFromViewToSurface:(CGRect)rect;@end