Clears all the geometrical primitives out of the scene. Current attribute settings are left unchanged.
Use
Clear_Display() when running in "non-segmented" mode. You call it just after a screen update.
Clear_Display() provides a handy way to clear geometries out in preparation for drawing a new scene. All the geometrical primitives (geometries that were "Inserted", such as lines) are removed. Attributes (styles that were "Set", such as line color) are left as they were.
Clear_Display() should not be confused with Reset_System() even though the net effect may look the same. Clear_Display() just removes geometry. Reset_System() is more drastic---it deletes everything and shuts down the whole system.
Clear_Display() is intended for use in the "non-segmented" context. It's actually identical to a call to
Flush_Geometry() ("?picture...").
- See also:
- Reset_System, Flush_Contents, Flush_Geometry, Delete_Segment.