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- 5.8.2 CHANGE XHATCH
-
-
- The CHANGE XHATCH command is used to alter the shape or to change the cross-
- hatch parameters for an existing xhatch polygon entity.
-
-
- COMMAND FORMAT
-
- The command format varies depending on the modification mode chosen. The
- different formats are explained with their associated modifiers.
-
-
- MODIFIERS
-
- ADD The ADD modifier is used to indicate that a sub-polygon
- definition is to be added to an existing xhatch polygon. The
- command format when using ADD is:
-
- #CHANGE XHATCH ADD :Ent x1 :Loc x2 x3 ... xn [:Ent ... ]
-
- 'x1' is used to select the required xhatch polygon. Locations
- 'x2' through to 'xn' define the boundary of a sub-polygon which
- is added to the xhatch polygon entity. This allows you to cut
- out sections of an existing xhatch polygon. ( See fig. 5.57
- ).
-
- SUBTRACT The SUBTRACT modifier is used to indicate that sub-polygon
- definitions are to be removed from an existing xhatch polygon
- entity. The command format when using SUBTRACT is:
-
- #CHANGE XHATCH SUBTRACT :Ent x1 :Loc x2 ... xn [:Ent .. ]
-
- 'x1' is used to select the required xhatch polygon. Locations
- 'x2' through to 'xn' are used identify which sub-polygon
- definitions are to be removed. The main xhatch polygon boundary
- cannot be removed. ( See fig. 5.58 ).
-
- EDIT The EDIT modifier is used to indicate that the main xhatch
- polygon boundary or any sub-poygon boundary for an existing
- xhatch entity will be altered. The command format when using
- EDIT is:
-
- #CHANGE XHATCH EDIT :Ent x1 :Loc x2 x3 ... xm xn [:Ent ]
-
- 'x1' is used to select the required xhatch polygon. Locations
- 'x2' through to 'xn' define the boundary alteration and are
- also used to select whether the main xhatch polygon boundary
- or a sub-polygon boundary will be changed.
-
- Locations 'x2' and 'xn' mark the start and end of the boundary
- alteration. Both the points 'x2' and 'xn' must lie in the
- vicinity of the same xhatch polygon boundary. The boundary
- nearest to these two points will be altered.
-
- The new boundary shape is made by adding the section defined
- by the locations 'x2' through to 'xn' at the two points where
- the new section joins the existing boundary. These two points
- are made at the intersection of the two vectors x2,x3 and
- xm,xn with the selected xhatch polygon boundary. ( See fig.
- 5.59 ).
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