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

//

//  File: OpenGLIBORenderer.m

//

//  Abstract: Class that implements methods for creating an IBO

//            based renderer.

//

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

//

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

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

#import "NSPropertyList.h"

#import "OpenGLIBORenderer.h"

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

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

#pragma mark -

#pragma mark Private - Methods

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

@interface OpenGLIBORenderer(Private)

- (void) initGeometry:(NSDictionary *)theDictionary;

- (void) initElements:(NSDictionary *)theDictionary;

- (void) initRenderer:(NSDictionary *)theDictionary;

- (void) newRendererWithPListAtPath:(NSString *)thePListPath;

- (void) cleanUp;

@end

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

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

@implementation OpenGLIBORenderer

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

- (id) initIBOWithType:(const GLenum)theType

{

    [self doesNotRecognizeSelector:_cmd];

    return( nil );

} // initIBOWithType

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

- (void) initGeometry:(NSDictionary *)theDictionary

{

    geometry = [[OpenGLIBOGeometry alloc] initGeometryWithDictionary:theDictionary];

    if( geometry )

    {

        GLsizeiptr size   = [geometry size];

        GLsizeiptr offset = size;

        [self setVertices:[geometry vertices]

                     size:size];

        [self setNormals:[geometry normals] 

                    size:size

                  offset:offset];

    } // if

} // initGeometry

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

- (void) initElements:(NSDictionary *)theDictionary

{

    elements = [[OpenGLIBOElements alloc] initElementsWithDictionary:theDictionary];

    if( elements )

    {

        [self setElements:[elements array]

                     size:[elements size]];

    } // if

} // initElements

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

- (void) initRenderer:(NSDictionary *)theDictionary

{

    renderer = [OpenGLDrawElements new];

    if( renderer )

    {

        [renderer setDictionary:theDictionary];

    } // if

} // initRenderer

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

- (void) newRendererWithPListAtPath:(NSString *)thePListPath 

{

    NSPropertyList *pList = [[NSPropertyList alloc] initPListWithFileAtPath:thePListPath];

    if( pList )

    {

        NSDictionary *dictionary = [pList dictionaryForKey:@"IBO"];

        if( dictionary )

        {

            [self initRenderer:dictionary];

            [self initGeometry:dictionary];

            [self initElements:dictionary];

            [self acquire];

        } // if

        [pList release];

    } // if 

} // newRendererWithPListAtPath

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

- (id) initIBORendererWithPListAtPath:(NSString *)thePListPath 

                                 type:(const GLenum)theType

{

    self = [super initIBOWithType:theType];

    if( self )

    {

        [self newRendererWithPListAtPath:thePListPath];

    } // if

    return( self );

} // initRendererWithPListAtPath

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

- (id) initIBORenderertWithPListInAppBundle:(NSString *)thePListName

                                       type:(const GLenum)theType

{

    self = [super initIBOWithType:theType];

    if( self )

    {

        NSBundle  *appBundle = [NSBundle mainBundle];

        if( appBundle )

        {

            NSString  *pListPath = [appBundle pathForResource:thePListName

                                                       ofType:@"plist"];

            if( pListPath )

            {

                [self newRendererWithPListAtPath:pListPath];

            } // if

        } // if

    } // if

    return( self );

} // initRenderertWithPListInAppBundle

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

- (void) cleanUp

{

    if( geometry )

    {

        [geometry release];

        geometry = nil;

    } // if

    if( elements )

    {

        [elements release];

        elements = nil;

    } // if

    if( renderer )

    {

        [renderer release];

        renderer = nil;

    } // if

} // cleanUpIBORenderer

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

- (void) dealloc

{

    [self cleanUp];

    [super dealloc];

} // dealloc

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

- (void) render

{

    [self bind];

    [renderer drawElements];

    [self unbind];

} // render

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

@end

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

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