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PgColorMatch()

Query for best color matches

Synopsis:

int PgColorMatch(int n, 
                 PgColor_t const *in, 
                 PgColor_t *out);

Arguments:

n

The number of colors in the array to find a match for.

in

An array of PgColor_t objects that specifies the colors that you want to match.

out

An array of PgColor_t objects that the function fills with the best color matches for the corresponding entry in the in array.

Library:

ph

Description:

This function queries the graphics driver for the best color matches for a number of color values. This is particularly useful with a palette-based graphics driver.

An array of n colors from the in array is passed to the driver, which selects the closest match for each color and returns these in the out array.

With a true or direct-color driver, the color is returned unchanged. With a palette-based driver, the closest color is found by computing within a RGB color cube the Cartesian distance between the color and each palette entry, and selecting the closest entry of a similar intensity.

Returns:

0

Successful completion.

-1

An error occurred.

Classification:

Photon

Safety:
Interrupt handler	No
Signal handler	No
Thread	No

See also:

PgColor_t

"Color" in the Raw Drawing and Animation chapter of the Photon Programmer's Guide

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