Package org.geotools.geometry.jts

Class OffsetCurveBuilder

Object
OffsetCurveBuilder
public class OffsetCurveBuilder extends Object
Builds a offset curve, that is, a line parallel to the provided geometry at a given distance. An offset curve is not the same as a buffer, the line is built only on one side of the original geometry, and will self intersect if the original geometry does the same.
Author:
Andrea Aime - GeoSolutions

  • Field Details

    • QUADRANT_SEGMENTS_DEFAULT

      public static int QUADRANT_SEGMENTS_DEFAULT

    • DEFAULT_THRESHOLD_RATIO

      public static double DEFAULT_THRESHOLD_RATIO

  • Constructor Details

    • OffsetCurveBuilder

      public OffsetCurveBuilder(double offset)
      Creates an offset builder with the given offset and the default number of quadrant segments QUADRANT_SEGMENTS_DEFAULT
      Parameters:
      offset - The offset distance. The offset line will be on the left for positive values, on the right otherwise

    • OffsetCurveBuilder

      public OffsetCurveBuilder(double offset, int quadrantSegments)
      Creates an offset builder with the given offset and number of quadrant segments
      Parameters:
      offset - The offset distance. The offset line will be on the left for positive values, on the right otherwise
      quadrantSegments - The number of segments per quadrant, must be positive

  • Method Details

    • offset

      public Geometry offset(Geometry g)
      Builds and return the perpendicular offset geometry. Only the linestring elements in the input geometries will be subject to offset, the returned geometry will be either a LineString or a MultiLineString
      Parameters:
      g - The source geometry
      Returns:
      The offset geometry (a single linestring for single line inputs, a multi-linestring for multi-line inputs), or null if no offset geometry could be computed (e.g. the input geometry is made of points)