9

752 Chapter 21: User Interface
Dolly Light + Tar get—Moves both the target
and the light to and from the light.
This option is available only if the viewport’s light
is a target light.
Li ght H otspot
Activate a Light viewport. > Viewport navigation controls
>LightHotspot
Light Hotspot lets you adjust the angle of a light’s
hotspot (page 3–954). This button replaces the
ZoomAllbuttonwhenalightviewportisactive.
The floodlight h as a narrow hotspot but a wide falloff area.
Widening the hotspot creates a brighter light.
Click this button, then move the mouse in the light
viewporttomaketheconeofthehotspotnarrower
or wider (the hotspot cone is shown in blue, the
falloff (page 3–954) cone is in gr ay).
Hold down the
Ctrl key while moving the mouse
tolocktheinitialangleseparationofthehotspot
and fal loff cones.
You can’t adjust the hotspot larger than the falloff,
because that would change the falloff value.
Likew ise, when you reduce the falloff, it stops at
the hotspot size (in both cases, separated by the
Angle Separation (page 3–826),specifiedonthe
Rendering page of the Preferences dialog).
To override the separation of the hotspot and
falloff parameters and cause the para meters to
affect each other, hold down the
Shi f t key .
For more information on the hotspot and falloff
parameters, see Spotlight Parameters (page 2–1338)
and Directional Parameters (page 2–1348).
Note: If the light is a photometric light (page 2–1301)
with spotlight distribution, this button controls the
light’s beam angle. At the beam angle, the li g ht’s
intensity has fallen to 50 per cent (rather than 100
percentatthehotspotangleforastandardlight).
Procedure
To change a light ’s hotspot:
1.
Set up a Perspective viewport so you can see
the lig ht in 3D space.
2. Activate a Light viewport.
3. Press H to display the Select Objects dialog
(page 1–78).Selectthelight.
The lig ht and its cones should b e visible in the
Perspective viewport.
4. Click Light Hotspot.
The button highlights when it is on.
5. Drag in the L ight viewp ort to change the
hotspot angle.