- Getting Started with DraftSight
- Jo?o Santos
- 515字
- 2025-03-31 04:08:26
Drawing lines and deleting
Let's start drawing lines with precision. After trying this command, several lines should be deleted, thus introducing entities selection.
Drawing lines
The LINE command (alias L,
on the Draw toolbar, or Draw on the main menu) creates segment lines. By default, it prompts only for points and connect them with separate lines. When done, press Esc or Enter to end the command:
LINE Options: Segments or Specify start point» P1 Options: Segments, Undo, Enter to exit or Specify next point» P2 Options: Segments, Undo, Enter to exit or Specify next point» P3 Options: Segments, Undo, Close, Enter to exit or Specify next point» P4 Options: Segments, Undo, Close, Enter to exit or Specify next point» Esc
Points can be defined by pressing the left mouse button or by coordinates. Later in this chapter we will make a drawing with coordinates.
Without ending the command, the Undo option allows for undoing the last defined point. It can be applied several times until undoing the first point in the command. After defining three points, the Close option may be used to close the polygon. Upon entering the command, if Enter is pressed, the line starts automatically at the last point of the last line, arc or polyline drawn.
Selecting and deleting
Many DraftSight commands prompt for selecting entities. For instance, if entities are to be moved, rotated or deleted, the first thing to do is select these. There are several options to select entities, but for now let's see the three most used. Other useful selection options are presented in next chapter. Entities, while selected, are represented with a temporary dashed line type.
- Picking on top of an entity: Entities are selected one by one by picking on top of each one.
- Window: By opening a rectangle to the right (by default, it assumes a blue color), all entities that remain completely within are selected.
- Crossing: By opening a rectangle to the left (by default, it assumes a green color), all entities that remain completely within or crosses the rectangle are selected.
Note
To remove entities from selection, the easiest way is to press the Shift key and select it by picking window or crossing.
By default, DraftSight accepts entities selection before specifying a command. If an entity is picked without command, it is immediately selected. When picking on a blank area, a rectangle selection is open: to the right performs a window selection, to the left performs a crossing selection. When selecting entities before a command, small blue squares are displayed on selected entities, called grips, whose utility will be presented later.
The DELETE command (alias DEL, Delete key 
on the Modify toolbar or Modify main menu) deletes the selected entities. It only prompts for the selection and, for each operation, indicates the number of selected objects and total number. When done, press Enter to end the command:
: DELETE Specify entities» Selection 6 found, 6 total Specify entities» Enter