progeCAD Professional manual The low-cost alternative to AutoCAD

Index



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Working with drawings

Using entity snaps

Entity snaps enable you to quickly select exact geometric points on existing entities without having to know the exact coordinates of those points. With entity snaps, you can select the endpoint of a line or arc, the center point of a circle, the intersection of any two entities, or any other geometrically significant position. You can also use entity snaps to draw entities that are tangent or perpendicular to an existing entity.

You can use entity snaps any time the program prompts you to specify a point--for example, if you are drawing a line or other entity. You can work with entity snaps in one of two ways:

Enable a running entity snap that remains in effect until you turn it off by choosing an entity snap when no other command is active.

Enable a one-time entity snap for a single selection by choosing an entity snap when another command is active. You can also use a one-time entity snap to override a running entity snap.
  1. TIP If you type the name of the entity snap, you need to type only the first three letters.
  1. When using entity snaps, the program recognizes only visible entities or visible portions of entities. You cannot snap to entities on layers that have been turned off or to the blank portions of dashed lines.
  2. When you specify one or more entity snaps, an entity snap target box is added to the crosshairs. In addition, an icon appears adjacent to the crosshairs indicating the active entity snap. When you select an entity, the program snaps to the snap point closest to the center of the target box.
  3. TIp Type m2p or mtp to enable a one-time snap to the midpoint of two points that you specify, such as two points selected using entity snaps.
To change the size of the entity snap target box
  1. Do one of the following:
  2. Choose Tools > Drawing Settings.
  3. Type settings and then press Enter.
  4. Click the Coordinate Input tab.
  5. Under Change Settings For, choose Entity Selection.
  6. Under Entity Snap Aperture, change the value in the Aperture field.
  7. Click OK.
 
  1. Choose Entity Selection.
  1. Type or select the entity snap aperture size.