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functions in color.i -
brighten
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brighten, factor
or brighten
brighten the current palette by the specified FACTOR.
The FACTOR is the slope of the transfer function for the color value
(see to_hsv for a description of the hsv color system); a value of
1.0 always remains 1.0, but values near 0.0 change by FACTOR.
FACTOR= 1.0 is a no-op. The default factor is 4.0.
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SEE ALSO:
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dump_palette
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dump_palette
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dump_palette, name
dump the current palette under the NAME. If NAME contains no
slash characters, the palette_directory will be prepended to the
name. The name can be fed back to the palette command in order
to reload the cumped palette.
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SEE ALSO:
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brighten,
palette,
palette_directory
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palette_directory
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palette_directory= "~/Gist/"
holds the default directory for the dump_palette command.
The directory name *must* end with "/"; the default is shown.
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SEE ALSO:
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dump_palette
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to_hsv
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hsv= to_hsv(rgb)
or hsv= to_hsv([r,g,b])
return the HSV representation of the n-by-3 array of RGB colors
rgb: red, green, blue from 0 to 255
hsv: h= hue in degrees, red=0, green=120, blue=240
s= saturation from 0 (gray) to 1 (full hue)
v= value from 0 (black) to 1 (full intensity)
s= 1 - min(r,g,b)/max(r,g,b)
v= max(r,g,b)
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SEE ALSO:
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to_rgb
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to_rgb
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rgb= to_rgb(hsv)
or rgb= to_rgb([h,s,v])
return the RGB representation of the n-by-3 array of HSV colors
rgb: red, green, blue from 0 to 255
hsv: h= hue in degrees, red=0, green=120, blue=240
s= saturation from 0 (gray) to 1 (full hue)
v= value from 0 (black) to 1 (full intensity)
s= 1 - min(r,g,b)/max(r,g,b)
v= max(r,g,b)/255
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SEE ALSO:
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to_hsv
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