Hi guys,

I'm going crazy here.

I have a function that should return a float number:

- (float) getHue:(UIColor *)original
{
    NSLog(@"getHue");
    const CGFloat *componentColors = CGColorGetComponents(original.CGColor);

    float red = componentColors[0];
    float green = componentColors[1];
    float blue = componentColors[2];

    float h = 0.0f;
    float maxChannel = fmax(red, fmax(green, blue));
    float minChannel = fmin(red, fmin(green, blue));
    if (maxChannel == minChannel)
        h = 0.0f;
    else if (maxChannel == red)
        h = 0.166667f * (green - blue) / (maxChannel - minChannel) + 0.000000f;
    else if (maxChannel == green)
        h = 0.166667f * (blue - red) / (maxChannel - minChannel) + 0.333333f;
    else if (maxChannel == blue)
        h = 0.166667f * (red - green) / (maxChannel - minChannel) + 0.666667f;
    else
        h = 0.0f;

    if (h < 0.0f)
        h += 1.0f;

    NSLog(@"getHue results: %f", h);

    return h;
}

The NSLog will trace it correctly (i.e: 0.005), but the actual return value of the function is NULL.

I've tried getting that value in so many ways and it never works.

float originalHue = [self getHue:original];

results in a building error, as it says: "incompatible types in initialization"

float *originalHue = [self getHue:original];

results in a null return.

I've tried other ways, but it never actually gets the value properly.

Any thoughts?

Cheers guys, Andre