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Use the Height Field utility
Use General utilities
Use the Multiply Divide utility
Use the Light Info utility
For a description of the Light
Info utility, see
Light Info.
To
view and connect Light Data attributes to Light
Info attributes
- Once
you have created lights in the scene, select Lights from
the Hypershade menu bar to view
the LightShape swatches in Hypershade.
- Select Light
Info from the Create > General
Utilities menu.
- Ctrl+middle+drag
the LightShape swatch over the Light Info swatch.
The Connection Editor appears.
- In
the Left Display menu, make sure Show
Readable is on. In the Right Display menu,
make sure Show Inputs Only is on.
- Click
to connect the LightShape’s World Matrix [0]
attribute to the World Matrix attribute of the Light
Info node.
Notice the light tab added to the top of the Light Info’s Attribute
Editor. Click this tab to access the light’s information
and adjust these values to translate and change the light in X,
Y, and Z.
You can also select any one of the Light Data attributes
from the Connection Editor. Light
Data attributes include the light direction, light intensity,
light ambient, light diffuse, light specular, and light shadow fraction.
- Select
the attribute you want to connect from the list.
Use this information as the input to other shading
nodes to produce interesting effects. For example, if you connect
the Sample Distance attribute to
one of the color attributes of a material, the color changes depending
on how far it is from the light.
NoteYou can attach the World
Matrix of any object (not just a light) to this node,
to get information about the object’s position relative to the point
being shaded.