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Subject: 
Re: Easy starfield, planet and star recipe
Newsgroups: 
lugnet.space, lugnet.publish.photography
Date: 
Sat, 21 Sep 2002 02:20:24 GMT
Viewed: 
2022 times
  
In lugnet.space, David Eaton writes:
In lugnet.space, Daniel Jassim writes:
Here's a relatively easy way to make a planet:
...
http://www.geekshelf.com/gallery/danjassim/MoreArtwork/easy.jpg

So-- most planets tend to have little swirlies of continents, atmosphere,
etc. In the past, to make those sorts of things, Ive used the 'render
clouds', then distorted the image in various ways.  Of course that always
entails ugly amounts of work since the cloud rendering always has that same
sparse fractal dimension that means most of the time it's got to be scaled
WAY down from something huge in order to make *little* swirlies and the
like. Any ideas on better ways to do that?

One of the controls you can also use is the sphereize filter in the Distort
menu. That will allow you to create or drop in a scan of a continent and
stuff. From there you define a circular area (Shift circle to get a perfect
circle)and then use the command. Set the control to 100 and it'll render the
surface on a sphere.

I guess the way I'd probably do the shading would be to make the planet as a
circle, complete with swirlies. Next make another layer on top that with a
circular gradient from white to black-- overlay that on top of the planet,
and lower the opacity until it looked "right". However, that also has the
added effect of *lightening* part of the planet as well as darkening. Is
there a way you know of to do a gradient from "transparent" to "color X"?

You can do a transparent gradient two ways:

1. When you double-click on the gradient box, go to the Edit button and
click it. You should be able  to control the gradient of the colors and also
transparency...you can switch from one to the other.

2. Alternately, you can make a Layer Mask in the Layer menu, and start with
Reveal all..then you should have black as the foreground color palette. You
can do a gradient on this level from black to white and it'll be a
transparency gradient.

I also tried making clouds by having a white layer with a cloud mask, and it
worked  pretty well.

Joe Meno

DaveE



Message is in Reply To:
  Re: Easy starfield, planet and star recipe
 
(...) etc. In the past, to make those sorts of things, Ive used the 'render clouds', then distorted the image in various ways. Of course that always entails ugly amounts of work since the cloud rendering always has that same sparse fractal dimension (...) (22 years ago, 20-Sep-02, to lugnet.space, lugnet.publish.photography)

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