Re: (Newbie) Applying colors to surface plots

• To: mathgroup at smc.vnet.net
• Subject: [mg21112] Re: [mg21095] (Newbie) Applying colors to surface plots
• From: Hartmut Wolf <hwolf at debis.com>
• Date: Fri, 17 Dec 1999 01:21:11 -0500 (EST)
• Organization: debis Systemhaus
• References: <199912130452.XAA16397@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```Fedder Skovgaard schrieb:
>
> I would like to apply a given color to a plot such as:
>
> ParametricPlot3D[sphere[1][a,b]//Evaluate,{a,0,Pi},{b,0,2Pi}]
>
> I have tried to work with SurfaceColor, but failed to get it to work. It
> seems very cumbersome to apply individual light sources to get an even
> color on the surface. This is even a larger challenge when combining
> several graphics objects and wishing to assign colors to individual
> objects.
>

Dear Fedder,

try e.g.

<< Graphics`Shapes`

Show[Graphics3D[{EdgeForm[], {SurfaceColor[Hue[0.35, 0.7, 0.9]],
Sphere[]}, {SurfaceColor[Hue[0.15, 1., 0.7]], Cone[0.5, 2,
30]}}]]

Or if you want, do:

s = {Cos[theta] Sin[phi], Cos[theta] Cos[phi], Sin[theta]};

gs = ParametricPlot3D[s, {phi, 0, 2 Pi}, {theta, -Pi/2, Pi/2},
DisplayFunction -> Identity]

c = {r Sin[phi], r Cos[phi], z};

gt = Block[{r = 1/2},
ParametricPlot3D[c, {phi, 0, 2 Pi}, {z, -1.5, 1.5},
DisplayFunction -> Identity]]

Show[MapAt[({EdgeForm[GrayLevel[0.5]], SurfaceColor[RGBColor[0, 1, 1]],
#} &),
gs, 1], MapAt[{EdgeForm[],
SurfaceColor[GrayLevel[0.3], GrayLevel[1.], 5], #} &, gt, 1],
DisplayFunction -> \$DisplayFunction]

this all gives something colorful.

Kind regards, Hartmut

```

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