GEOMETRY LINE Control

      

This command is used to define new lines or to redefine existing lines. If an existing line is redefined then the position of any existing parts whose definition depends on the line will change automatically. The use of the commands ARC, INTERSECT, ELEMENTS, NODES, SPLINE, and STRAIGHT is optional (except where cursor picking is used). The command processor is able to determine which option is required from the additional parameters which follow. Once a line has been defined using one of these commands, the command processor assumes that further lines are to be entered and remains at the GEOMETRY LINE level. From this level, further lines may be defined or a different primary command may be selected.

Lines may also be generated automatically when the GEOMETRY SWEEP command is used to sweep one or more points.

When adjacent geometric parts are created separately, and need to be joined, it may be necessary to use the MESHING MERGE command to ensure that the final mesh is continuous across the boundary.

GEOMETRY LINE has the following sub-commands:

2.8.6.1 GEOMETRY LINE ANGLE - Line at a given angle to an existing line

2.8.6.2 GEOMETRY LINE ARC - Circular arc less than 180 degrees or ellipse lines

2.8.6.3 GEOMETRY LINE CIRCLE - Creates arcs to make a circle

2.8.6.4 GEOMETRY LINE CURVE - Creates a NURB curve line

2.8.6.5 GEOMETRY LINE ELEMENTS - Line of manually defined elements

2.8.6.6 GEOMETRY LINE INTERSECT - Line at Intersection of two shapes

2.8.6.7 GEOMETRY LINE NODES - Polyline of manually defined nodes

2.8.6.8 GEOMETRY LINE PARALLEL - Parallel copy of an existing line

2.8.6.9 GEOMETRY LINE PERPENDIC - Perpendicular line to an existing line

2.8.6.10 GEOMETRY LINE SPLINE - Spline curve

2.8.6.11 GEOMETRY LINE STRAIGHT - Straight line