GLSLShowpiece Lite/Exhibits/Toyball/Toyball.m

//-------------------------------------------------------------------------
//
//  File: Toyball.hm
//
//  Abstract: Toyball GLSL Exhibit
//           
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//  Copyright (c) 2004-2007 Apple Inc., All rights reserved.
//
//-------------------------------------------------------------------------
 
#import "Toyball.h"
 
@implementation Toyball
 
- (void) setupUniforms
{
    glUseProgramObjectARB(programObject);
    
    glUniform4fARB([self getUniformLocation:programObject uniformName:"LightDir"], 0.57735, 0.57735, 0.57735, 0.0);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"BallCenter"], 0.0, 0.0, 0.0, 1.0);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"HVector"], 0.32506, 0.32506, 0.88808, 0.0);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"SpecularColor"], 0.5, 0.5, 0.4, 60.0);
 
    glUniform4fARB([self getUniformLocation:programObject uniformName:"Red"],    0.6, 0.0, 0.0, 1.0);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"Yellow"], 0.6, 0.5, 0.0, 1.0);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"Blue"],   0.0, 0.3, 0.6, 1.0);
 
    glUniform4fARB([self getUniformLocation:programObject uniformName:"HalfSpace0"], 1.0, 0.0, 0.0, 0.2);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"HalfSpace1"], 0.309016994, 0.951056516, 0.0, 0.2);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"HalfSpace2"], -0.809016994, 0.587785252, 0.0, 0.2);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"HalfSpace3"], -0.809016994, -0.587785252, 0.0, 0.2);
    glUniform4fARB([self getUniformLocation:programObject uniformName:"HalfSpace4"], 0.309016994, -0.951056516, 0.0, 0.2);
 
    glUniform1fARB([self getUniformLocation:programObject uniformName:"InOrOutInit"], -3.0);
    glUniform1fARB([self getUniformLocation:programObject uniformName:"StripeWidth"], 0.3);
    glUniform1fARB([self getUniformLocation:programObject uniformName:"FWidth"], 0.005);
} // setupUniforms
 
- (void) initLazy
{
    [super initLazy];
    
    // Setup GLSL
 
    // Get a model and set its quadric
    
    model = [[Models alloc] init];
 
    // Load vertex and fragment shaders
    
    [self loadShadersFromResource:@"Toyball" ];
        
    // Setup uniforms
    
    [self setupUniforms];
} // initLazy
 
- (void) dealloc
{
    [model dealloc];
    
    [super dealloc];
} // dealloc
 
- (NSString *) name
{
    return @"Toyball";
} // name
 
- (NSString *) descriptionFilename
{
    return [appBundle pathForResource: @"Toyball" ofType: @"rtf"];
} // descriptionFilename
 
- (void) renderFrame
{
    [super renderFrame];
    
    glUseProgramObjectARB(programObject);
 
    [model drawModel:kModelSolidSphere];
    
    glUseProgramObjectARB(NULL);
} // renderFrame
 
@end