Sources/Classes/Application/Model/OpenGL/View/Snapshot/OpenGLViewPixels.m
//------------------------------------------------------------------------ |
// |
// File: OpenGLViewPixels.m |
// |
// Abstract: Utility class for copying pixels from an OpenGL mpView |
// |
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// |
//------------------------------------------------------------------------ |
//------------------------------------------------------------------------ |
#import "OpenGLViewPixels.h" |
//------------------------------------------------------------------------ |
//------------------------------------------------------------------------ |
@implementation OpenGLViewPixels |
//------------------------------------------------------------------------ |
//------------------------------------------------------------------------ |
- (id) initViewPixelsWithFrame:(const NSRect *)theFrame |
view:(NSOpenGLView *)theBaseView |
{ |
NSRect subFrameUpdated; |
if( theFrame == NULL ) |
{ |
subFrameUpdated = [theBaseView bounds]; |
} // if |
else |
{ |
subFrameUpdated = *theFrame; |
if( NSIsEmptyRect( subFrameUpdated ) ) |
{ |
subFrameUpdated = [theBaseView bounds]; |
} // if |
} // else |
self = [super initPBOPackWithSize:&subFrameUpdated.size |
usage:GL_STREAM_READ |
mode:GL_BACK]; |
if( self ) |
{ |
mpView = theBaseView; |
m_Frame = subFrameUpdated; |
} // if |
return( self ); |
} // initViewPixelsWithFrame |
//------------------------------------------------------------------------ |
- (void) dealloc |
{ |
// Dealloc the superclass |
[super dealloc]; |
} // dealloc |
//--------------------------------------------------------------------------- |
+ (id) viewPixelsWithFrame:(const NSRect *)theFrame |
view:(NSOpenGLView *)theBaseView |
{ |
return( [[[OpenGLViewPixels allocWithZone:[self zone]] initViewPixelsWithFrame:theFrame |
view:theBaseView] autorelease] ); |
} // viewPixelsWithFrame |
//------------------------------------------------------------------------ |
- (void) setFrame:(const NSRect *)theFrame |
{ |
if( theFrame == NULL ) |
{ |
m_Frame = [mpView bounds]; |
} // if |
else |
{ |
m_Frame = *theFrame; |
if( NSIsEmptyRect( m_Frame ) ) |
{ |
m_Frame = [mpView bounds]; |
} // if |
} // else |
[self setSize:&m_Frame.size]; |
} // pixelsSetFrame |
//------------------------------------------------------------------------ |
- (GLvoid *) pixels |
{ |
[self read:YES]; |
return( [self data] ); |
} // pixels |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Accessor |
//------------------------------------------------------------------------ |
- (NSRect) frame |
{ |
return( m_Frame ); |
} // frame |
//--------------------------------------------------------------------------- |
- (GLuint) rowbytes |
{ |
return( [self rowbytes] ); |
} // size |
//------------------------------------------------------------------------ |
@end |
//------------------------------------------------------------------------ |
//------------------------------------------------------------------------ |
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