PgAlphaValue()

Extract the alpha component from a color value

Synopsis:

int PgAlphaValue( PgColor_t color );

Arguments:

color

The composite color, of type PgColor_t, that you want to get the alpha component of.

Library:

ph

Description:

This macro extracts the alpha color component from a composite color value. The result is between 0 and 255.

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This macro doesn't check the color model currently in use, and gives undefined results if you're not using the Pg_CM_ARGB model.

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Classification:

Photon

See also:

PgARGB(), PgBlueValue(), PgCMY(), PgColor_t, PgGreenValue(), PgHSV(), PgRedValue(), PgRGB(), PgSetFillColor(), PgSetFillDither()

“Color” and “Alpha Blending Support” in the Raw Drawing and Animation chapter of the Photon Programmer's Guide