image.h

This routine can be used to generically scale to any point between two colors.

Max is the scale that distance can go from. Distance 0 is the first color, Distance == max is the second color. The distance from 0 to max proportionately scaled the color....

CDATA green = BASE_COLOR_GREEN;
CDATA blue = BASE_COLOR_BLUE;
CDATA red = BASE_COLOR_RED;

Compute a color that is halfway from blue to green. (if the total distance is 100, then 50 is half way).

CDATA blue_green = ColorAverage( blue, green, 50, 100 );

Compute a color that's mostly red.

CDATA red_blue_green = ColorAverage( blue_green, red, 240, 255 );

Iterate through a whole scaled range...

int n;
for( n = 0; n < 100; n++ )
{
    CDATA scaled = ColorAverage( BASE_COLOR_WHITE, BASE_COLOR_BLACK, n, 100 );
    // as n increases, the color slowly goes from WHITE to BLACK.
}

Variables