9

ProBoolean Compound Object 387
click the first, and then Shi f t +click the last. To
highlight multiple non-contiguous entries, use
Ctrl +click. To remove highlighting from a list
entry,
Alt +click the highlighted item.
At the ProBoolean level in the modifier stack,
you can perform only sub-object operations (page
1–386) on highlighted items. At the Operands
sub-object level, you can transform highlighted
operands as well as perform sub-object operat ions;
see Modifier stack (page 1–382) for details.
Advanced Options rollout
Update group
Theseoptionsdeterminewhenupdatesare
performed on the Bo olean object after you make
changes. Choose one of the following:
•
Always—Updates occur as soon as you make
changes to the Boolean object.
•
Manually—Updates occur only when you click
the Update button.
•
When S elected—Updates occur whenever the
Boolean object is selected.
•
When Rendering—Updates are applied to the
Boolean object only at render time, or when
you click U pdate.
Update—Applies changes to the Boolean object.
Available with all options except Always.
Note: When you first create a ProBoolean object
w ith Manually or When Rendering act ive, no
operands, including the base object, are visible
until you update at lea st once. Thereaf ter, the
base object is vi sible, but no subsequently picked
operands are until you update again.
Decimation %—The percentage of edges to remove
from the polygons in the Boolean object, thus
reducingthenumberofpolygons.Forexample,a
Decimation % setting of 20.0 removes 20 percent
of the polygon edges.
1. D ecimation %=0.0
2. Decimation %=30.0
3. Decimation %=60.0
4. Decimation %=80.0
Quadrilateral Tessellation group
These options enable quadrilateral tessellation of
the Boolean object. T his m akes the object suitable
for editing subdivision surfaces (page 1–963) and
for smoothing meshes. It also makes the object
suitable for conversion to Editable Poly format.
For further discussion of this option, see the topic
Quad Meshing and Smoothing (page 1–392).
Mak e Quadrilaterals—When on, changes the
tessellation of the Boolean object from triangles to
quadrilaterals.