In this part, we will put an atmosphere to a torus moon.
First, load the world you built in previous part of the tutorial: Volumetric clouds atmosphere.
Then create a "KH Primitive" object of any size, anywhere and change its shape to a torus. The first part of the tutorial shows how to do it. Don't put any material on it for now. You'll do it later.
Now, open the moon editor. To avoid confusion in this tutorial, get
rid of all existing moons and rings. The associated render objects are
deleted too.
Then add a new moon. Set the render object to the previously created
"KH Primitive". You will see it suddenly disapear from the RTR window.
To make the moon impressive without requiring to make it too huge,
reduce the orbit radius to 10'000'000 meters. Don't change the moon
scale.
Open the render object editor and set the tube dimensions according
to the following picture:
Playing with the moon's orbit position, you should be able to see
the moon in the RTR. It's time to apply your prefered moon material on
it.
To improve moon visibility, the clouds rendering has been disabled.
Even then, it is not really visible. Maybe we should look at the scene
by night. Move the sun along its orbit in the sun editor. Don't use the
time editor or you will also move the moon.
Wow! That's cool! Now let's add an atmosphere. Open the atmosphere
editor. Expand the atmosphere control stack and set the Atmosphere 2 to
"KH Atmos". Expand it and set the primitive to the moon primitive
(should be "KH_Primitive01"). For our first attempt, disable clouds by
setting the quality sliders to 0. You may also change the atmosphere
Height to 20000m and the Ozone Layer altitude to 30000 and thickness to
5000m.
Great! We can breath on this doughnut. The right picture is the
result of another sun position.
Now, let's activate the cloud layer. As the moon is seen from far
away, we should use very large features sizes. Set the clouds altitude
at 10'000 meters to make the layer distinct from the moon surface.
Cool, isn't it?
Now you are ready to put atmopsheres and volumetrics clouds
everywhere.
Be creative!