POV-Ray : Newsgroups : povray.documentation.inbuilt : Mysterious function argument : Re: Mysterious function argument Server Time
19 Oct 2021 18:18:08 EDT (-0400)
  Re: Mysterious function argument  
From: Alain Martel
Date: 3 Oct 2021 13:02:37
Message: <6159e22d$1@news.povray.org>

> (*) - POV-Ray proper has unique default color maps for each continuous 
> pattern. Be sure to always specify the color map you want!

> Bill P.

Not quite accurate. Several continuous patterns do have an unique 
default colour_map, but not all.
Those don't have a specific default map, unless this counts as a 
specific colour_map
colour_map{[0 rgb 0][1 rgb 1]}
bumps, spotted, leopard, quilted, ripples, waves, granite, crackle, 
marble, dents, spherical, boxed, cylindrical, planar.

Those have continuous gradients, but they repeat abruptly, and don't 
have default colour map :
gradient, onion.

The first two are identical to a bozo pattern, but without the colour_map.

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