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

//

//  File: VertexNoise.m

//

//  Abstract: Vertex Noise GLSL Exhibit

//           

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

#import "VertexNoise.h"

@implementation VertexNoise

- (void) initOffset

{

    offset = [[UniformData alloc] init];

    [offset initCurrent:0 atIndex:0];

    [offset initMax:100 atIndex:0];

    [offset initMin:0 atIndex:0];

    [offset initDelta:0.1 atIndex:0];

    [offset initCurrent:0 atIndex:1];

    [offset initMax:100 atIndex:1];

    [offset initMin:0 atIndex:1];

    [offset initDelta:0.1 atIndex:1];

    [offset initCurrent:0 atIndex:2];

    [offset initMax:100 atIndex:2];

    [offset initMin:0 atIndex:2];

    [offset initDelta:0.1 atIndex:2];

} // initScale

- (void) setupUniforms

{

    [self initOffset];

    glUseProgramObjectARB(programObject);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"SurfaceColor"], 0.2, 0.8, 0.4);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"LightPosition"], 0.0, 0.0, 5.0);

    glUniform3fvARB([self getUniformLocation:programObject uniformName:"offset"], 1, [offset current]);

    glUniform1fARB([self getUniformLocation:programObject uniformName:"scaleIn"], 2);

    glUniform1fARB([self getUniformLocation:programObject uniformName:"scaleOut"], 0.1);

} // setupUniforms

- (void) initLazy

{

    [super initLazy];

    // Setup GLSL

    // Here we get a new model

    model = [[Models alloc] init];

    // Load vertex and fragment shaders

    [self loadShadersFromResource:@"VertexNoise" ];

    // Setup uniforms

    [self setupUniforms];

} // initLazy

- (void) dealloc

{

    [offset dealloc];

    [model dealloc];

    [super dealloc];

} // dealloc

- (NSString *) name

{

    return @"Vertex Noise";

} // name

- (NSString *) descriptionFilename

{

    return [appBundle pathForResource: @"VertexNoise" ofType: @"rtf"];

} // descriptionFilename

- (void) renderFrame

{

    [super renderFrame];

    glUseProgramObjectARB(programObject);

    [offset animate];

    glUniform3fvARB([self getUniformLocation:programObject uniformName:"offset"], 1, [offset current]);

    [model drawModel:kModelSolidTeapot];

    glUseProgramObjectARB(NULL);

} // renderFrame

@end