9

Water Simulation 801
When you run the animation, your specified
falloff will be used to blend smo othly between
the keyframed and simulated vertices.
Water
The reactor Water object allows you to simulate the
behavior of a water surface. Objects can interact
with the water in physically realistic ways, creat ing
waves and ripples. reactor calculates a buoyancy
value for any objects that fall into the water using
their mass and size, so that some objects s ink and
others float. You can even change the density of a
water object, which affects how objects float in it.
Water in reactor is a space warp (page 3–1014) that
issimulatedaswater.Spacewarpsdon’trender,
so you need to prov ide reactor with a geometrical
representation of the water if you want it to appear
in your final a nimation. You do this by binding a
planeorothergeometrytothespacewarp.Note
that a representation of the water still appears in
the Preview Window even if you haven’t done this.
This section covers the following topics:
• The Water Space War p ( page 2–801)
• Rendering Water (page 2–803)
Wat er Space Warp
Create panel > Space Warps > reactor > Water
menu bar > reactor > Create Object > Water
reactor toolbar > Create Water button
You can use the Water space warp to simulate
the behavior of a liquid surface in your reactor
scene. You can specify a size for the water, and
physical properties such as density, wave speed,
and viscosity.
You don’t need to add the water to a collection for
it to take part in the sim ulation. However, while
it will appear in the Preview Window, it will not
appearinarenderedanimationunlessyoubind
the space warp to a plane or other geometry. You
canfindouthowtodothisinRendering Water
(page 2–803).
Procedures
To create a Water space warp:
1.
Chooseoneoftheabovecommands,andthen
in any viewport drag out a Water object.
Tip: For horizontal water, create the space warp
in a Perspective or Top viewpor t.
2. Move and rotate the object as necessary using
standard commands. For changing other
properties, see the next procedure.
To edit the proper ties of a Water object:
1.
Select the object in the scene.
2. On the Modify panel, open the Properties
rollout.