Home Page > 3D Debugger > Topological Commands
Topological Commands
Topological
Commands
Commands change
internal structure of the object. They are available from the Command
Page of the Form View. Join and Detach commands are also available from
"Current Object" menu, other commands can also be found in
"Surface" menu. Change Class command is also available from context menu of both
2D Editors.
See Programming topological commands topic about performing these operations
programmatically.
Break Command
The Break Command divides a line element in two. To break
a line press Break button and click the segment at the point where you would like to
break it. This command is a way to add a new internal segment to the line strip in
the Cross-section Editor.
Close Loop Command
The Close Loop command adds a new straight segment which joins
ends of the current strip to make it closed. Close Loop command does not
have any effect for strips which consist of a single segment. This command is
executed only if the resulting loop will have a valid orientation (see Segment
Strips) .
Delete Command
The Delete Command deletes the currently selected segment
from the strip. Note that strip in a 2D editor is assumed to be connected at all times, meaning that any two points
are linked with a segment strip. Because of that, deleting a middle segment
from a non-closed strip will delete the rest of the strip. This will not happen if you are deleting an end segment from a
non-closed strip. This command applies only to the selected element in Cross-section view. It
does not have any effect for the currently selected object in the Profile View. Delete
key from the keyboard is the shortcut for this command.
When a point is selected in Cross-section View the result of this command
will be:
- If the strip consists of a single segment, than the resulting
object will consist of a single 3D line representing the other edge of the
surface patch.
- If the point is an end of a strip which has more than
one segment, the surface patch of the adjoined segment will be deleted.
- If the point is an internal point of a strip which has
more than one segment, both adjoined patches will be replaced with a single
flat patch. This rule has an exception for case when the initial strip is a
closed loop with three segments. In the latter case the operation will not be
performed because it would lead to an invalid strip.
- If the strip consists of a single point than the resulting strip will be empty.
New Knot Command
This command will add a new knot at the current cross-section position if the
cross-section position does not coincide with one of existing knots. In the
latter case the command does not have any effect. This command is a shortcut for
Base > New Knot menu option.
Change Class Command
Toggles type of the currently selected line in either of 2D views. Note
that Profile View has priority over Cross-Section view with regards of
selection.
Add Command
The Add command will create a new joint in the current strip (strip of
patches in case of 3DO or strip of revolved 2D lines in case of SOR) by
extending one if its ends. Press the button and click on a point in
Cross-section View to insert a new joint. If the strip has more than one end,
one of them has to be selected prior to this command. If the strip has at least
one joint a new segment connecting the new point will be created. If the strip
was empty prior to this command, a single point will be added to the strip.
Join Command
The Join command attaches the Current Object
to another object.
Joined sections will move together as a solid object when moved with mouse or by
using the Current Object Page. The Join command allows to create complex objects from simpler ones.
After issuing the Join command
select in 3D View the object you would like to join to. The
Model Explorer offers a convenient shortcut for this command.
Detach Command
The Detach Command detaches currently selected object from the object it is joined
to (the parent object). Nothing will
happen if the current object does not have a parent. Detach command can also be
carried out by menu of the Model Explorer.
Split Command
The Split Command creates a new object by cutting the current
object with the cross-section plane at current cross position.. This command has no
effect for Surface Of Revolution type of objects.
Cut Command
The Cut Command creates a new object by cutting the current
object along
the currently selected line (Circumference generated by the selected point in
case of SOR). If Cross-section editor has no selection no
operation is performed.
If surface of the current object is not a closed strip of patches than current
object will be split in two along the line. Otherwise a copy of the selected
line will be created in the same location and these two lines will be made
edges of the current object, which hence will not be closed anymore.
If the selected line is an edge of the current object, a copy of the edge will
be created. This line will become a new object in the model.
|