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36 Chapter 10: Precision and Drawing Aids
2.
Lock your selection set with the
SPACEBAR, or by clicking Lock Selection on
the st atus bar.
3. Wherever you click in the v iewpor t, the snap
willstayrelativetothedistanceofyourcursor
to the object.
To use snaps to move an absolute distance:
1.
Turn on Snaps Toggle.
2. Click the selection. Snap uses the point you
click for the snap source.
3. Move to whatever target snap you desire. The
object will snap to an absolute distance.
To rotate a box ar ound a v ertex using s naps:
1.
Make sure the Auto Key button is off.
2. Select the box.
3. On the Main toolbar, click Select And
Rotate.
4. Turn Snaps on by pressing S on the keyboard.
5. On the Customize menu, choose Grid And
SnapSettings.TurnonVertexandturnoffGrid
Points.
6. Lock your selection set by clicking Lock
Selection on the status bar.
7. Onthetoolbar,chooseUseTransform
Coordinate Center (hold the mouse down on
Use Pivot Point Center to expose the flyout).
8. Move your cursor over any vertex in the box.
The blue s nap cursor will appear, and then you
can rotate the box around that vertex.
Inter face
There are three snap modes:
2D Snap—The cursor snaps only to the
active construction grid, including any geometry
on the plane of that grid. The Z axis, or vertical
dimension, is ignored.
2.5D S nap—The cursor snaps only to the
vertices or edges of the projection of an object
ontotheactivegrid.
Suppose you create a
grid object (page 3–1045)
and make it active. You then position the grid
objectsoyoucanseethroughthegridtoacube
further off in 3D space. Now with 2.5D set, you
cansnapalinefromvertextovertexonthedistant
cube,butthelineisdrawnontheactivegrid.
The effect is like holding up a sheet of glass and
drawingtheoutlineofadistantobjectonit.
3D Snap—This is the default. The cursor
snaps directly to any geometry in 3D space. 3D
snapping lets you create and move geometry in all
dimensions, ignoring the construction plane.
Right-click this button to display the
Grid and
Snap Sett ings dialog (page 2–38)
,whichletsyou
change snap categories and set other options.
Angl e S nap Toggle
Main toolbar > Angle Snap Toggle
Keyboard > A
Angle Snap Toggle determines the incremental
rotation for a number of features, including the
standard Rotate transform. As you rotate an object
(or group of objects), t he object moves around a
givenaxisintheincrementyouset.
Angle Snap Toggle also affects Pan/Orbit camera
controls,
FOV (page 3–1031) and Roll camera
settings, and
Hotspot/Falloff (page 3–1048)
spotlight angles.