plrgbhls.3plplot

Langue: en

Autres versions - même langue

Version: July, 2010 (fedora - 01/12/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

plrgbhls - Convert RGB color to HLS

SYNOPSIS

plrgbhls(r, g, b, p_h, p_l, p_s)

DESCRIPTION

Convert RGB color coordinates to HLS Redacted form: General: plrgbhls(r, g, b, p_h, p_l, p_s) Perl/PDL: Not available? Implemented as plrgb/plrgb1?

This function is used in example 2.

ARGUMENTS

r (PLFLT, input)
Red intensity (0.0-1.0) of the colour
g (PLFLT, input)
Green intensity (0.0-1.0) of the colour
b (PLFLT, input)
Blue intensity (0.0-1.0) of the colour
p_h (PLFLT *, output)
Pointer to hue, in degrees on the colour cone (0.0-360.0)
p_l (PLFLT *, output)
Pointer to lightness, expressed as a fraction of the axis of the colour cone (0.0-1.0)
p_s (PLFLT *, output)
Pointer to saturation, expressed as a fraction of the radius of the colour cone (0.0-1.0)

AUTHORS

Geoffrey Furnish and Maurice LeBrun wrote and maintain PLplot. This man page was automatically generated from the DocBook source of the PLplot documentation, maintained by Alan W. Irwin and Rafael Laboissiere.

SEE ALSO

PLplot documentation at http://plplot.sourceforge.net/resources.