ConvexHull(凸包)_ArcGIS

最新推荐文章于 2024-04-19 12:17:11 发布

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最新推荐文章于 2024-04-19 12:17:11 发布

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原文链接：http://www.cnblogs.com/The-SEA/p/4385228.html

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本文介绍了ITopologicalOperator接口中的ConvexHull方法，该方法用于构建几何对象的凸包，即最小的凸多边形，使得所有外角都是凸的。凸包方法适用于点、多点、折线和多边形等高级几何类型。对于低级几何类型如线段、路径或环，必须先将其包装为高级几何类型才能使用此方法。

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ITopologicalOperator.ConvexHull Method

Constructs the convex hull of this geometry.

[C#]public IGeometry ConvexHull ();

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Description

The ConvexHull of a geometry is the minimal bounding polygon such that all outer angles are convex. The ConvexHull of a point is the point itself.

Remarks

ITopologicalOperator methods must be applied on high-level geometries only. High-Level geometries are point, multipoint, polyline and polygon. To use this method with low-level geometries such as segments (Line, Circular Arc, Elliptic Arc, Bézier Curve), paths or rings, they must be wrapped into high-level geometries types.

This method does not support GeometryBags.

ConvexHull method does not deal with Z attribute now.