Graphics Reference
In-Depth Information
gons. If you overshoot the intended selection, using the down-arrow reverses the pattern. Figure 9-8 shows
the top of a wall selected by clicking two polygons and then holding the up-arrow until the entire top section
of the wall is selected.
Holding the Shift key while pressing the up-arrow adds all the polygons touching the current selection
to the selection. Pressing Shift+down-arrow removes the outermost polygons from the selection. If you are
aware of any small polygon borders (for example, the ones found on the floors), this operation can save you
a significant amount of time. After some practice, you will learn to see distances of two, three, or more poly-
gons from the complete desired selection. This allows you to make a much smaller initial selection. Then
simply holding Shift and tapping the up-arrow a few times will select a large area without the need for care-
fully selecting a large number of initial polygons. In this manner, you will be able to move through your
model quickly and efficiently.
Figure 9-8: Selecting a partial loop can be done quickly with the up-arrow.
The left- and right-arrow keys can also be useful in certain situations. These keys will select the next and
previous loops, respectively. The actual direction of the change in selection is based on the direction of the
initial loop. To better visualize this, imagine selecting two adjacent polygons that make up a loop. The direc-
tion is set based off this initial selection. So if you place yourself on the geometry and move in the direction
of the selection, the left-arrow will move you into the loop to the left, while the right-arrow will move you
into the right. This is illustrated in Figure 9-9 .
Figure 9-9: If two polygons are selected in the direction of the middle arrow, then the left- and right-arrow
keys will select the top and bottom loops, respectively.
 
 
 
 
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