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134 Chapter 4: Object Properties
5.
Click X Position: Bezier Float.
The parameter highlights.
6. Click OK to close the dialog.
A new rollout named Parameters 1 appears,
containing the X Position parameter.
Note: A parameter in Par ameter C ollec tor can
contain only a single value (e.g., float, integer,
color), so the software doesn’t let you add
parameters such as Position: Position XYZ,
which contains three distinct values.
7. Click Add To Selected Rollout and then
use the same method to add the Y Position
and Z Po sition parameters: Highlight both
parameters on the Track View Pick dia log and
then click Add To Selected Rollout to add both
at once to the Parameters 1 rollout.
8. Drag each spinner in turn to move the sphere
on the respective axis.
As you change each parameter value, the sphere
movesinrealtimeintheviewports.
9. Set al l three parameters to 0.0.
10. Click the check button next to each parameter
to select all three.
11. Onthetoolbar,turnonMultipleEdits.
12. Drag one of the spinners.
All three change by the same amount, so that
thespheremovesdiagonallyinthescene.
13. UsethekeyboardtochangetheYPosition
value to 30.0.
Again, the other two change.
14. Click the Absolute/Relative button to turn
on Relative mode.
All the values display 0.0, a s w ith Offset mo de
on the status b ar coordinate display.
15. U se the spinner to set Y Position to 0.65.
The t hree change in unison, and then reset back
to 0.0 when you release the mouse button. This
has added the value you set to each of the three
positions, as you’ll see in the next step.
16. Click the Absolute/Relative button to return
to Absolute mode.
The va lues are all set to 30.65, reflecting the
relative change that you made.
Next, you’ll try a few Edit commands.
17. Click the Y Position check button to deselect
the parameter.
18. From the Edit menu, choose Select Invert.
The Y Position parameter is now selected, and
the other two are deselected.
19. Click the Move Parameters Up button.
The Y Position parameter now sits above the
X Position parameter.
20. Click the Move Parameters Down button.
The Y Position returns to its posit ion below the
X Position parameter.
21. Choose Edit > Edit Notes.
The Notes dialog opens. Here you can change
the parameter name, set a URL or fi le location
with further information about the parameter,
and enter comments.
22. In the box below Parameter Name, type Sph ere
YLoc.,andthenpressENTER.
Thenewnamereplacestheoldoneonthe
rollout. You can see the original name by
hovering the mouse cursor over the parameter
name;itappearsonatooltip.