2010

Maya creates an empty 3-dimensional fluid container centered at the
origin.
Next, add fluid to the container. In the first lesson, you added fluid to
the container by emitting it into a Dynamic Grid. In the second lesson,
you added fluid to the container by selecting a predefined gradient. In
this lesson, you will add fluid to the container by painting property values
inside it.
Painting Fuel and Density into a container
In Fluid Effects, Fuel defines the state of a reaction (unreacted, completely
reacted, and states in between). Density represents the substance that is
reacting, while Temperature causes the reaction. Combining Density with
Fuel defines a situation in which you can see a reaction. You add Temperature
to this situation to start the reaction. As the reaction takes place, Density
values become smaller and the Fuel values get smaller to represent how much
of the reaction has yet to take place. The reaction also creates more
Temperature, and it creates light.
In the following steps you’ll paint Fuel and Density values in the container.
To paint in a 3D container you actually paint in two dimensions on “slices”
of the container. A slice is a plane in X, Y, or Z that represents where you
paint. (You could think of a slice as a 2D canvas.) You paint each slice
individually, but the accumulative effect of adjacent slices is a 3D fluid.
To paint Fuel and Density into a container
➤ With the container still selected, choose Fluid Effects > Add/Edit Contents
> Paint Fluids Tool >
.
The Tool Settings window opens and a slice displays at the origin of the fluid
container. The slice is represented by a plane with dotted edges and fluid
Painting Fuel and Density into a container | 811