Storing of Topology Points

The topology points are currently restricted to be used within one plane panel only. On the other hand they may of course be generated by references to other panels and to other items in the model.

Topology points are numbered in the range 1 to 999. The numbers of the points are used when they are referred to and may be user defined.

Topology points may be restricted to the plane of the current panel, either the mold plane or a selected side of the plating of the panel. Such points are called 2D topology points.

However, topology points may also be space points, located in an arbitrary way in the coordinate system of the current panel. Such points are called 3D points.

Topology points are stored as attributes in the panel. In addition to the position of the point, 2D points also have associated with them two directions in the uv plane of the current panel, one primary direction and one secondary direction. The sense of these directions depends on the way the topology point has been generated.

References to topology points may concern their position or directions or both combined in one reference.