9

General Lighting Parameters 1333
• Use t he Size spinner to set the size of the
shadow map.
• Use the Bias spinner to adjust the shadow
offset, if necessary.
• UsetheSampleRangespinnertocreatea
soft-edged shadow.
To cast r ay-traced sha dows:
Ray-traced shadows (page 3–1000) are generated
by tracing the path of rays sampled from a light
source. Ray-traced shadows are more accurate
than shadow-mapped shadows.
1. On the General Parameters rollout, choose
Ray-Traced Shadows from the drop-down list.
2. Use controls on the Ray Traced Shadow Params
rollout (page 2–1363) to adjust the shadow
offset, if necessary.
To keep a n obj ect f r om casti ng shadows:
1.
Select the object.
2. Right-click the object to display the quad menu
and choose Properties from the Transform
quadrant.
The Object Properties dialog (page 1–117) is
displayed.
3. Turn off Cast Sh adow s, an d then click OK.
Now when you render the scene, the object
casts no shadows.
To ma k e a n obj ect not r eceive sha dows:
1.
Select the object.
2. Right-click the object to display the quad menu
and choose Properties from the lower-right
(Transform) quadrant.
The Object Properties dialog (page 1–117) is
displayed.
3. Turn off Receive Shadows, and then click OK.
Now when you render the scene, the object
receives no shadows.
Note: You can also prevent objects from casting
shadows by excluding them from a light.
Interfa ce
Light Type group (Modify panel)
On—(Both Create p anel and Modify panel) Turns
the light on and off. When On is on, shading and
rendering use the light to illuminate the scene.
When On is off, the light is not used in shading or
rendering. Default=on.
In viewports, the interactive renderer shows the
effectofturninglightsonoroff.
Light Type L ist—Changes t he type of the lig ht.
If you have selected a standard light type (page
2–1288), the light c an be changed to an omni,
spot, or directional light. If you have selected
a photometric light ty p e (page 2–1301),youcan
change the light to a point, linear, or area light.
This par ameter i s available only in the Modify
panel.
Targeted—When on, the light is targeted. The
distance between the light and its target is
displayed to the right of the check box. F or a free
light, you can set this value. For target lights, you
can change it by turning off the check box, or by
moving the light or the light’s target object.