com.vividsolutions.jts.awt

Class ShapeReader


  • public class ShapeReader
extends Object
    Converts a Java2D Shape or the more general PathIterator into a Geometry.

    The coordinate system for Java2D is typically screen coordinates, which has the Y axis inverted relative to the usual JTS coordinate system. This is rectified during conversion.

    PathIterators to be converted are expected to be linear or flat. That is, they should contain only SEG_MOVETO, SEG_LINETO, and SEG_CLOSE segment types. Any other segment types will cause an exception.

    • Constructor Detail

    • Method Detail

      • read

        public static Geometry read(PathIterator pathIt,
                            GeometryFactory geomFact)
        Converts a flat path to a Geometry.
        Parameters:
        pathIt - the path to convert
        geomFact - the GeometryFactory to use
        Returns:
        a Geometry representing the path

      • read

        public static Geometry read(Shape shp,
                            double flatness,
                            GeometryFactory geomFact)
        Converts a Shape to a Geometry, flattening it first.
        Parameters:
        shp - the Java2D shape
        flatness - the flatness parameter to use
        geomFact - the GeometryFactory to use
        Returns:
        a Geometry representing the shape

      • read

        public Geometry read(PathIterator pathIt)
        Converts a flat path to a Geometry.
        Parameters:
        pathIt - the path to convert
        Returns:
        a Geometry representing the path

      • toCoordinates

        public static List toCoordinates(PathIterator pathIt)
        Extracts the points of the paths in a flat PathIterator into a list of Coordinate arrays.
        Parameters:
        pathIt - a path iterator
        Returns:
        a List of Coordinate arrays
        Throws:
        IllegalArgumentException - if a non-linear segment type is encountered