Subtract combines two colors by taking the clamped difference of each channel (c1 - c2). For Color objects, the actual equation used for each 8 bit channel is: max(c1-c2, 0).
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Parameters |
Description |
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Color c1 |
The first (the destination) of two color parameters that is combined to form a new color (return value). * |
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Color c2 |
The second (the source) of two color parameters that is combined to form a new color (return value). * |
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Color c |
A color (the source) subtracted from the current color (the destination). |
The member function, taking one parameter (c), returns a Color reference to the current string, which was formed by subtracting the passed color from the original color (this - c).
The static function, taking two parameters (c1 and c2), returns a new Color by value, which is formed from the difference of the two passed colors (c1 - c2). *
* - pertains to static function only.