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-
- 7.1.2 TRIM ENTITY
-
-
- The TRIM ENTITY command is used to trim - shorten or lengthen - an existing
- entity. Not all entities can be trimmed. Valid entities are lines, strings,
- arcs and ellipses.
-
-
- COMMAND FORMAT
-
- The command format varies depending on which trim option is chosen. In the
- default mode with no specific option chosen, the format is :
-
- #TRIM ENTITY :Ent x1 :Loc x2 [:Ent ... ]
-
- The entity identified at location 'x1' is the entity to be trimmed. Location
- 'x2' defines the trim point. This is the point of intersection of a normal
- projected from location 'x2' to the selected entity.
-
- Which end of the entity is trimmed is determined by the identifying
- location ('x1'). The end-point farthest from this location is left as it is.
- The end-point nearest to the identifying location is trimmed to the point
- defined by 'x2'. ( See figs. 7.4 to 7.6 ).
-
-
- MODIFIERS
-
- INTERSECTION Format:
-
- #TRIM ENTITY INTERSECTION :Ent x1 x2 :Ent ...
-
- This modifier is used to trim two entities - identified by
- 'x1' and 'x2'. The entities will be trimmed to their common
- point of intersection if one exists. ( See fig. 7.7 ).
-
- Which end of the entity is trimmed is determined by the
- identifying locations in the same manner as the default trim
- mode.
-
- AGAINST Format:
-
- #TRIM ENTITY AGAINST :Ent x1 x2 x3 ... xn
-
- When the AGAINST modifier is used, a number of entities can
- be trimmed to their respective points of intersection with
- a common entity. The entity to be trimmed against is iden-
- tified with 'x1'. The entities to be trimmed are identified
- by 'x2' through to 'xn'. All of the latter entities will be
- trimmed to the point where they intersect with the first
- entity. ( See fig. 7.8 ).
-
- Which end of the entity is trimmed is determined by the
- identifying locations in the same manner as the default trim
- mode.
-
- LENGTH Format:
-
- #TRIM ENTITY LENGTH value :Ent x1 x2 ... xn
-
- The length modifier can be used to trim any line entity to a
- specific length. The required length is entered after the
- LENGTH modifier. ( See fig. 7.9 ).
-
- Which end of the line is trimmed is determined by the iden-
- tifying location. The end-point farthest from this location
- is left as it is. The end-point nearest to the identifying
- location is changed to reflect the new line length.
-
-
-