//---------------------------------------------------------------------------

//

//  File: OpenGLTeapot.h

//

//  Abstract: Class that implements a method for generating an IBO teapot

//            with enabled sphere map texture coordinate generation.

//

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//  Copyright (c) 2009, 2011 Apple Inc., All rights reserved.

//

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#import "OpenGLTeapotProtocol.h"

#import "OpenGLTextured2DTeapot.h"

#import "OpenGLTexturedRectTeapot.h"

#import "OpenGLTeapot.h"

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Private - Data Structures

//---------------------------------------------------------------------------

struct OpenGLTeapotData

{

    GLenum  target;

    id<OpenGLTeapotProtocol> object;

};

typedef struct OpenGLTeapotData   OpenGLTeapotData;

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Private - Constructors

//---------------------------------------------------------------------------

static OpenGLTeapotDataRef OpenGLTeapotCreateWithPropertyList(NSString *pPListPath,

                                                              const NSSize *pSize,

                                                              const GLenum target)

{

    OpenGLTeapotDataRef pTeapot = (OpenGLTeapotDataRef)calloc(1, sizeof(OpenGLTeapotData));

    if( pTeapot != NULL )

    {

        BOOL isValid = (target == GL_TEXTURE_2D) || (target == GL_TEXTURE_RECTANGLE_ARB);

        pTeapot->target = (isValid) ? target : GL_TEXTURE_2D;

        if( pTeapot->target == GL_TEXTURE_2D )

        {

            pTeapot->object = [[OpenGLTextured2DTeapot alloc] initTextured2DTeapotdWithPListAtPath:pPListPath 

                                                                                              size:pSize];

        } // if

        else

        {

            pTeapot->object = [[OpenGLTexturedRectTeapot alloc] initTextured2DTeapotdWithPListAtPath:pPListPath 

                                                                                                size:pSize];

        } // else

    } // if

    return( pTeapot );

} // OpenGLTeapotCreateWithPropertyList

//---------------------------------------------------------------------------

static OpenGLTeapotDataRef OpenGLTeapotCreateWithPropertyListInAppBundle(NSString *pPListName,

                                                                         const NSSize *pSize,

                                                                         const GLenum target)

{

    OpenGLTeapotDataRef pTeapot = (OpenGLTeapotDataRef)calloc(1, sizeof(OpenGLTeapotData));

    if( pTeapot != NULL )

    {

        BOOL isValid = (target == GL_TEXTURE_2D) || (target == GL_TEXTURE_RECTANGLE_ARB);

        pTeapot->target = (isValid) ? target : GL_TEXTURE_2D;

        if( pTeapot->target == GL_TEXTURE_2D )

        {

            pTeapot->object = [[OpenGLTextured2DTeapot alloc] initTextured2DWithPListInAppBundle:pPListName 

                                                                                            size:pSize];

        } // if

        else

        {

            pTeapot->object = [[OpenGLTexturedRectTeapot alloc] initTexturedRectWithPListInAppBundle:pPListName 

                                                                                                size:pSize];

        } // else

    } // if

    return( pTeapot );

} // OpenGLTeapotCreateWithPropertyListInAppBundle

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Private - Destructor

//---------------------------------------------------------------------------

static void OpenGLTeapotDelete(OpenGLTeapotDataRef pTeapot)

{

    if( pTeapot != NULL )

    {

        if( pTeapot->object )

        {

            [pTeapot->object release];

            pTeapot->object = nil;

        } // if

        free(pTeapot);

        pTeapot = NULL;

    } // if

} // OpenGLTeapotDelete

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

@implementation OpenGLTeapot

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Designated Initializers

//---------------------------------------------------------------------------

- (id) initTeapotdWithPListAtPath:(NSString *)thePListPath

                             size:(const NSSize *)theSize

                           target:(const GLenum)theTarget

{

    self = [super init];

    if( self )

    {

        mpTeapot = OpenGLTeapotCreateWithPropertyList(thePListPath,

                                                      theSize, 

                                                      theTarget);

    } // if

    return( self );

} // initTeapotdWithPListAtPath

//---------------------------------------------------------------------------

- (id) initTeapotWithPListInAppBundle:(NSString *)thePListName

                                 size:(const NSSize *)theSize

                               target:(const GLenum)theTarget

{

    self = [super init];

    if( self )

    {

        mpTeapot = OpenGLTeapotCreateWithPropertyListInAppBundle(thePListName,

                                                                 theSize, 

                                                                 theTarget);

    } // if

    return( self );

} // initTeapotWithPListInAppBundle

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Destructors

//---------------------------------------------------------------------------

- (void) dealloc

{

    OpenGLTeapotDelete(mpTeapot);

    [super dealloc];

} // dealloc

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Accessors

//---------------------------------------------------------------------------

- (GLenum) target

{

    return( mpTeapot->target );

} // target

//---------------------------------------------------------------------------

- (NSSize) size

{

    return( [mpTeapot->object size] );

} // size

//---------------------------------------------------------------------------

- (BOOL) setSize:(const NSSize *)theSize

{

    return( [mpTeapot->object setSize:theSize] );

} // setSize

//---------------------------------------------------------------------------

- (BOOL) setTarget:(const GLenum)theTarget

{

    return( [mpTeapot->object setTarget:theTarget] );

} // setTarget

//---------------------------------------------------------------------------

- (BOOL) setScale:(const GLfloat *)theScale

{

    return( [mpTeapot->object setScale:theScale] );

} // setScale

//---------------------------------------------------------------------------

- (BOOL) setTranslation:(const GLfloat *)theTranslation

{

    return( [mpTeapot->object setTranslation:theTranslation] );

} // setTranslation

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Utilities

//---------------------------------------------------------------------------

- (void) display

{

    [mpTeapot->object display];

} // display

//---------------------------------------------------------------------------

@end

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------