Sources/Classes/Application/Core/View/QTCVOpenGLView.m
//--------------------------------------------------------------------------- |
// |
// File: QTCVOpenGLView.m |
// |
// Abstract: Main view class |
// |
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//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#import "OpenGLQuad.h" |
#import "OpenGLTeapot.h" |
#import "CVGLImagebuffer.h" |
#import "QTCVOpenGLView.h" |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Private - Data Structures |
//--------------------------------------------------------------------------- |
struct QTCVOpenGLViewData |
{ |
CVGLImagebuffer *imagebuffer; |
OpenGLQuad *quad; |
OpenGLTeapot *teapot; |
GeometryType geometry; |
}; |
typedef struct QTCVOpenGLViewData QTCVOpenGLViewData; |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Private - Methods |
//--------------------------------------------------------------------------- |
@interface QTCVOpenGLView(Private) |
- (void) deleteQuad; |
- (void) deleteTeapot; |
- (void) deleteImagebuffer; |
- (void) deleteObjects; |
- (void) drawObjects; |
- (void) prepareQuad:(const NSSize *)theFrameSize; |
- (void) prepareTeapot:(const NSSize *)theFrameSize; |
- (void) prepareImagebuffer:(const NSSize *)theFrameSize; |
@end |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
//--------------------------------------------------------------------------- |
@implementation QTCVOpenGLView |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Application Startup |
//--------------------------------------------------------------------------- |
// |
// Initialize |
// |
//--------------------------------------------------------------------------- |
- (void) awakeFromNib |
{ |
mpQTCVGLView = (QTCVOpenGLViewDataRef)malloc(sizeof(QTCVOpenGLViewData)); |
if( mpQTCVGLView != NULL ) |
{ |
mpQTCVGLView->geometry = kGeometryQuad; |
mpQTCVGLView->teapot = nil; |
mpQTCVGLView->quad = nil; |
mpQTCVGLView->imagebuffer = nil; |
} // if |
} // awakeFromNib |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Destructor |
//--------------------------------------------------------------------------- |
- (void) deleteQuad |
{ |
if( mpQTCVGLView->quad ) |
{ |
[mpQTCVGLView->quad release]; |
mpQTCVGLView->quad = nil; |
} // if |
} // deleteQuad |
//--------------------------------------------------------------------------- |
- (void) deleteTeapot |
{ |
if( mpQTCVGLView->teapot ) |
{ |
[mpQTCVGLView->teapot release]; |
mpQTCVGLView->teapot = nil; |
} // if |
} // deleteTeapot |
//--------------------------------------------------------------------------- |
- (void) deleteImagebuffer |
{ |
if( mpQTCVGLView->imagebuffer ) |
{ |
[mpQTCVGLView->imagebuffer release]; |
mpQTCVGLView->imagebuffer = nil; |
} // if |
} // deleteImagebuffer |
//--------------------------------------------------------------------------- |
- (void) deleteObjects |
{ |
[self deleteImagebuffer]; |
[self deleteQuad]; |
[self deleteTeapot]; |
} // deleteObjects |
//--------------------------------------------------------------------------- |
- (void) cleanUp |
{ |
[super cleanUp]; |
if( mpQTCVGLView != NULL ) |
{ |
[self deleteObjects]; |
free( mpQTCVGLView ); |
mpQTCVGLView = NULL; |
} // if |
} // cleanUp |
//--------------------------------------------------------------------------- |
- (void) dealloc |
{ |
[self cleanUp]; |
[super dealloc]; |
} // dealloc |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Draw into a OpenGL view |
//--------------------------------------------------------------------------- |
- (void) drawObjects |
{ |
if( mpQTCVGLView->geometry == kGeometryTeapot ) |
{ |
[mpQTCVGLView->teapot display]; |
} // if |
else |
{ |
[mpQTCVGLView->quad display]; |
} // else |
} // drawObjects |
//--------------------------------------------------------------------------- |
- (void) drawScene |
{ |
if( [self isValid] ) |
{ |
// Update the imagebuffer |
[mpQTCVGLView->imagebuffer update:[self pixelBuffer]]; |
// Update the viewport properties |
[self updateViewport]; |
// Enable & bind the texture |
[mpQTCVGLView->imagebuffer bind]; |
// Draw the 3D objects |
[self drawObjects]; |
// Disable & unbind the texture |
[mpQTCVGLView->imagebuffer unbind]; |
} // if |
} // drawScene |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Private - Initialize OpenGL resources for a movie |
//--------------------------------------------------------------------------- |
- (void) prepareQuad:(const NSSize *)theFrameSize |
{ |
// Delete the old quad object |
[self deleteQuad]; |
// Instantiate a new quad object |
mpQTCVGLView->quad = [OpenGLQuad new]; |
if( mpQTCVGLView->quad ) |
{ |
[mpQTCVGLView->quad setSize:theFrameSize]; |
[mpQTCVGLView->quad acquire]; |
} // if |
} // prepareQuad |
//--------------------------------------------------------------------------- |
- (void) prepareTeapot:(const NSSize *)theFrameSize |
{ |
// Delete the old teapot object |
[self deleteTeapot]; |
// Instantiate a new teapot object |
mpQTCVGLView->teapot = [[OpenGLTeapot alloc] initTeapotWithPListInAppBundle:@"Teapot" |
size:theFrameSize |
target:[mpQTCVGLView->imagebuffer target]]; |
} // prepareTeapot |
//--------------------------------------------------------------------------- |
- (void) prepareImagebuffer:(const NSSize *)theFrameSize |
{ |
// Delete the old CoreVideo imagebuffer |
[self deleteImagebuffer]; |
// Instantiate a new pbo object |
mpQTCVGLView->imagebuffer = [[CVGLImagebuffer alloc] initImagebufferWithSize:theFrameSize |
target:GL_TEXTURE_2D |
format:[self format] |
hint:GL_STORAGE_CACHED_APPLE |
mipmaps:YES]; |
} // prepareImagebuffer |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Acquire OpenGL Resources |
//--------------------------------------------------------------------------- |
// |
// Concrete implementation in order to acquire 3D objects. |
// |
//--------------------------------------------------------------------------- |
- (void) prepareScene |
{ |
NSSize frameSize = [self size]; |
[self prepareImagebuffer:&frameSize]; |
[self prepareQuad:&frameSize]; |
[self prepareTeapot:&frameSize]; |
} // prepareScene |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Accessors |
//--------------------------------------------------------------------------- |
// |
// Geometry for drawing |
// |
//--------------------------------------------------------------------------- |
- (void) setGeometry:(const GeometryType)theGeometry; |
{ |
mpQTCVGLView->geometry = theGeometry; |
} // setGeometry |
//--------------------------------------------------------------------------- |
@end |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
Copyright © 2011 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2011-06-27