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

//

//  File: UniformData.m

//

//  Abstract: UniformData Utility functions

//           

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

#import "UniformData.h"

static BOOL copyValue( GLfloat *src, GLfloat *dst )

{

    BOOL valueCopied = NO;

    if ( src != NULL )

    {

        int i;

        for ( i= 0; i < 4; i++ )

        {

            dst[i] = src[i];

        } // for

        valueCopied = YES;

    } // if

    return valueCopied;

} // copyValue

@implementation UniformData

- (id) init

{

    [super init];

    return self;

} // init

- (void) dealloc

{

    [super dealloc];

} // dealloc

- (void) initCurrent:(GLfloat)value

{

    current[0] = value;

} // initCurrent

- (void) initMin:(GLfloat)value

{

    min[0] = value;

} // initMin

- (void) initMax:(GLfloat)value

{

    max[0] = value;

} // initMax

- (void) initDelta:(GLfloat)value

{

    delta[0] = value;

} // initDelta

- (void) initCurrent:(GLfloat)value atIndex:(int)i

{

    current[i] = value;

} // initCurrent

- (void) initMin:(GLfloat)value atIndex:(int)i

{

    min[i] = value;

} // initMin

- (void) initMax:(GLfloat)value atIndex:(int)i

{

    max[i] = value;

} // initMax

- (void) initDelta:(GLfloat)value atIndex:(int)i

{

    delta[i] = value;

} // initDelta

- (void) animate

{

    int i; 

    for (i = 0; i < 4; i++ ) 

    {

        current[i] += delta[i];

        if ( ( current[i] < min[i] ) || ( current[i] > max[i] ) )

        {

            delta[i] = -delta[i];

        } // if

    } // for

} // animate

- (BOOL) setCurrent:(GLfloat *)theCurrent

{

    return copyValue(theCurrent, current);

} // setCurrent

- (GLfloat *) current

{

    return current;

} // current

- (BOOL) setMin:(GLfloat *)theMin

{

    return copyValue(theMin, min);

} // minSet

- (GLfloat *) min

{

    return min;

} // min

- (BOOL) setMax:(GLfloat *)theMax

{

    return copyValue(theMax, max);

} // minSet

- (GLfloat *) max

{

    return max;

} // max

- (BOOL) setDelta:(GLfloat *)theDelta

{

    return copyValue(theDelta, delta);

} // minSet

- (GLfloat *) delta

{

    return delta;

} // delta

@end