AutoCAD Map 3D 2009 Geospatial Platform Reference

AutoCAD Map 3D Geospatial Platform API

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MgGeometry
Boundary
Buffer
Contains
ConvexHull
Crosses
Difference
Disjoint
Distance
Equals
GetGeometryType
Intersection
Intersects
Overlaps
SymetricDifference
Touches
Union
Within
virtual MgGeometry* MgGeometry::Difference ( MgGeometry *  other  )  [virtual]

Returns a geometry that represents a point set difference between this geometric entity and another.

.NET Syntax
virtual MgGeometry Difference(MgGeometry other);
Java Syntax
virtual MgGeometry Difference(MgGeometry other);
PHP Syntax
virtual MgGeometry Difference(MgGeometry other);

Parameters:
other (MgGeometry) The MgGeometry to subtract from this one.
Returns:
An MgGeometry representing the difference.

Illustration

if (Geom1.Disjoint(Geom2) == True) then Geom1.Difference(Geom2) = Geom1.
if (Geom1.Touches(Geom2) == True) then Geom1.Difference(Geom2) = Geom1.
if (Geom1.Crosses(Geom2) == True) then

diffWhenCrosses.png

if (Geom1.Within(Geom2) == True) then
diffWhenWithin.png

if (A.Overlaps(B) == True) then

diffWhenOverlaps.png

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