Point Selection
Point selection is the most commonly used method of selection. The following are the modes for point selection.
- Single: Selects one object at a time
- Add: Adds one object at a time to the selected set
- Sub: Subtracts one object at a time from the selected set
Each of these modes can be used to select entire objects or vertices of objects. All modes of point selection affect only one object at a time. The object selected is the object with the edge closest to the point of selection that also passes the selection filter. You can select edges and lines that are off-grid as long as the point of selection is on the closest snap grid location.
Selecting the vertices of objects is referred as partial selection. For partial selection:
- Only the closest edge to the selection point is selected.
- If the selection point is a vertex, only the vertex is selected.
- Instances, mosaics, dots, and labels cannot be partially selected.
- Selecting the vertices of this type of object selects the entire object.
Single Mode Point Selection
The single mode of selection is useful when you want to select a specific object. It selects the specified object (edge or vertex for partial selection) and deselects all previously selected objects. All previously selected objects are deselected even if they would not pass the selection filter.
Add Mode Point Selection
The add mode of selection is identical to the single mode, except that currently selected objects are not deselected. The add mode is useful when you are trying to select a group of specific objects.
Sub Mode Point Selection
The sub mode of selection is identical to the add mode, except that the specified object (edge or vertex for partial selection) is deselected. The sub mode is useful when you have selected a group of objects and you want to remove one of them.
Interactive Function
When a selection point (l_point) is specified as an argument in any point selection function, SKILL uses that point to evaluate the function and select the indicated object. If you do not specify a value for l_point, the function behaves interactively and prompts you to enter a selection point.
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