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Re: Another fun question about color in IDL [message #17493 is a reply to message #17490]

Wed, 20 October 1999 00:00

Pavel Romashkin
Messages: 166
Registered: April 1999

Senior Member

I am wondering if using VERT_COLORS in combination with /SHADING will give
the effect you want? You can specify color for each vertex. Here's what Help
says:

VERT_COLORS (Get, Set)
Set this keyword to a vector of colors to be used to draw at each vertex.
Color is interpolated between vertices if SHADING is set to 1 (Gouraud). If
there are more vertices than elements in VERT_COLORS, the elements of
VERT_COLORS are cyclically repeated. By default, the polygons are all drawn
in the single color provided by the COLOR keyword. If this keyword is omitted
or set to a scalar, vertex colors are removed and the surface is drawn in the
color specified by the COLOR keyword.

Good luck,
Pavel

Todd Bowers wrote:

cut - cut

> and tweak it with the SHADE_RANGE keyword which I thought would be
> analagous to the SHADES keyword in shade_surf. No luck. It's only
> a 2 element vector. I'm trying to do something with a palette, but
> I think I'm not grasping the concepts of the obj. graphics model or
> RGB.
>
> Can anyone give me a nudge (or preferably a hard shove) in the
> right direction??
>
> Thanks, as always.
> TB

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[Message index]

		Re: Another fun question about color in IDL By: davidf on Thu, 21 October 1999 00:00
		Re: Another fun question about color in IDL By: Mark Hadfield on Thu, 21 October 1999 00:00
		Re: Another fun question about color in IDL By: Pavel Romashkin on Wed, 20 October 1999 00:00

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