Class ConformingDelaunayTriangulationBuilder

Hierarchy: Object , ConformingDelaunayTriangulationBuilder

public class ConformingDelaunayTriangulationBuilder

A utility class which creates Conforming Delaunay Triangulations from collections of points and linear constraints, and extract the resulting triangulation edges or triangles as geometries.

Authors:: Martin Davis

public ConformingDelaunayTriangulationBuilder()

public void setSites(Geometry geom)

Sets the sites (point or vertices) which will be triangulated. All vertices of the given geometry will be used as sites. The site vertices do not have to contain the constraint vertices as well; any site vertices which are identical to a constraint vertex will be removed from the site vertex set.

Parameters:: geom - geom the geometry from which the sites will be extracted.

public void setConstraints(Geometry constraintLines)

Sets the linear constraints to be conformed to. All linear components in the input will be used as constraints. The constraint vertices do not have to be disjoint from the site vertices. The constraints must not contain duplicate segments (up to orientation).

Parameters:: constraintLines - constraintLines the lines to constraint to

public void setTolerance(double tolerance)

Sets the snapping tolerance which will be used to improved the robustness of the triangulation computation. A tolerance of 0.0 specifies that no snapping will take place.

Parameters:: tolerance - tolerance the tolerance distance to use

public QuadEdgeSubdivision getSubdivision()

Gets the QuadEdgeSubdivision which models the computed triangulation.

Returns:: the subdivision containing the triangulation

public Geometry getEdges(GeometryFactory geomFact)

Gets the edges of the computed triangulation as a MultiLineString.

Parameters:: geomFact - geomFact the geometry factory to use to create the output

Returns:: the edges of the triangulation

public Geometry getTriangles(GeometryFactory geomFact)

Gets the faces of the computed triangulation as a GeometryCollection of Polygon.

Parameters:: geomFact - geomFact the geometry factory to use to create the output

Returns:: the faces of the triangulation