MapWinGeoProc:Topology:Polygon Invalidate

This is a back-up of the WIKI.
Not all links might work
We're working on a new wiki.

Main Page | Recent changes | View source | Page history | Log in / create account |

Printable version | Disclaimers | Privacy policy

Invalidate

Syntax

Invalidate()

Summary

Many properties are derived from the points. Generally, these are calculated once and cached. Most changes that can be made externally will automatically cause an invalidation to occur, so adding points, for instance, will force the perimeter to be recalculated. This forces such an invalidation so that the next time derived properties are queried, they will be recalculated.

Parameters

Visual Basic Net 2005 Example Implementation Code
Visual C# 2005 Example Implementation Code
Back to Polygon

Retrieved from "http://mapwindow.org/wiki/index.php/MapWinGeoProc:Topology:Polygon_Invalidate"

This page has been accessed 438 times. This page was last modified on 9 December 2006, at 03:08.