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

//

//  File: OpenGLQuadTex2D.m

//

//  Abstract: Utility class for managing a quad VBO for texture 2D target.

//           

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//

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

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

#import "OpenGLQuadTex2D.h"

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

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

#pragma mark -

#pragma mark Private - Macros

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

#define BUFFER_OFFSET(i) ((GLchar *)NULL + (i))

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

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

#pragma mark -

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

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

@implementation OpenGLQuadTex2D

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

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

#pragma mark -

#pragma mark Public - Designated Initializer

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

//

// Initialize

//

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

- (id) init

{

    self = [super init];

    if( !self )

    {

        NSLog(@">> DEBUG: OpenGL Quad Texture 2D - Failed instantiating from the base class!" );

    } // if

    return( self );

} // init

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

- (id) initQuadTex2DWithSize:(const NSSize *)theSize

{

    self = [super initQuadBaseWithSize:theSize

                                target:GL_TEXTURE_2D];

    if( !self )

    {

        NSLog(@">> DEBUG: OpenGL Quad Texture 2D - Failed instantiating from the base class!" );

    } // if

    return( self );

} // initQuadTex2DWithSize

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

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

#pragma mark -

#pragma mark Public - Destructor

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

- (void) dealloc 

{

    [super dealloc];

} // dealloc

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

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

#pragma mark -

#pragma mark Public - Utilities

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

//

// Draw a quad using texture & vertex coordinates

//

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

- (void) display

{

    GLenum target = [self target];

    glBindBuffer(target, [self buffer]);

    {

        glPushMatrix();

        {

            glScalef( [self aspect], 1.0f, 1.0f );

            glEnableClientState(GL_TEXTURE_COORD_ARRAY);

            glEnableClientState(GL_VERTEX_ARRAY);

            {

                GLuint   size   = [self size];

                GLsizei  stride = [self stride];

                GLenum   type   = [self type];

                glTexCoordPointer(2, type, stride, BUFFER_OFFSET(size));

                glVertexPointer(2, type, stride, BUFFER_OFFSET(0));

                glDrawArrays([self mode], 0, [self count]);

            }

            glDisableClientState(GL_VERTEX_ARRAY);

            glDisableClientState(GL_TEXTURE_COORD_ARRAY);

        }

        glPopMatrix();

    }

    glBindBuffer(target, 0);

} // display

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

@end

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

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