Java Code Examples for com.vividsolutions.jts.geom.LineString#getCoordinateSequence()

The following examples show how to use com.vividsolutions.jts.geom.LineString#getCoordinateSequence() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: LineDissolver.java From jts with GNU Lesser General Public License v2.1

6 votes

private void add(LineString lineString) {
  if (factory == null) {
    this.factory = lineString.getFactory();
  }
  CoordinateSequence seq = lineString.getCoordinateSequence();
  boolean doneStart = false;
  for (int i = 1; i < seq.size(); i++) {
    DissolveHalfEdge e = (DissolveHalfEdge) graph.addEdge(seq.getCoordinate(i-1), seq.getCoordinate(i));
    // skip zero-length edges
    if (e == null) continue;
    /**
     * Record source initial segments, so that they can be reflected in output when needed
     * (i.e. during formation of isolated rings)
     */
    if (! doneStart) {
      e.setStart();
      doneStart = true;
    }
  }
}

Example 2

Source File: GeometryUtils.java From gama with GNU General Public License v3.0

4 votes

public static ICoordinates getContourCoordinates(final LineString g) {
	if (g.isEmpty()) { return ICoordinates.EMPTY; }
	return (ICoordinates) g.getCoordinateSequence();
}

Example 3

Source File: Distance3DOp.java From jts with GNU Lesser General Public License v2.1

4 votes

private Coordinate intersection(PlanarPolygon3D poly,LineString line) {
	CoordinateSequence seq = line.getCoordinateSequence();
	if (seq.size() == 0)
		return null;

	// start point of line
	Coordinate p0 = new Coordinate();
	seq.getCoordinate(0, p0);
	double d0 = poly.getPlane().orientedDistance(p0);
	
	// for each segment in the line
	Coordinate p1 = new Coordinate();
	for (int i = 0; i < seq.size() - 1; i++) {
		seq.getCoordinate(i, p0);
		seq.getCoordinate(i + 1, p1);
		double d1 = poly.getPlane().orientedDistance(p1);

		/**
		 * If the oriented distances of the segment endpoints have the same sign, 
		 * the segment does not cross the plane, and is skipped.
		 */
		if (d0 * d1 > 0)
			continue;

		/**
		 * Compute segment-plane intersection point
		 * which is then used for a point-in-polygon test.
		 * The endpoint distances to the plane d0 and d1 
		 * give the proportional distance of the intersection point 
		 * along the segment.
		 */
		Coordinate intPt = segmentPoint(p0, p1, d0, d1);
		// Coordinate intPt = polyPlane.intersection(p0, p1, s0, s1);
		if (poly.intersects(intPt)) {
			return intPt;
		}

		// shift to next segment
		d0 = d1;
	}
	return null;
}

Example 4

Source File: PlanarPolygon3D.java From jts with GNU Lesser General Public License v2.1

4 votes

private int locate(Coordinate pt, LineString ring) {
	CoordinateSequence seq = ring.getCoordinateSequence();
	CoordinateSequence seqProj = project(seq, facingPlane);
	Coordinate ptProj = project(pt, facingPlane);
	return RayCrossingCounter.locatePointInRing(ptProj, seqProj);
}

Example 5

Source File: PlanarPolygon3D.java From jts with GNU Lesser General Public License v2.1

4 votes

public boolean intersects(Coordinate pt, LineString ring) {
	CoordinateSequence seq = ring.getCoordinateSequence();
	CoordinateSequence seqProj = project(seq, facingPlane);
	Coordinate ptProj = project(pt, facingPlane);
	return Location.EXTERIOR != RayCrossingCounter.locatePointInRing(ptProj, seqProj);
}

Example 6

Source File: EdgeGraphBuilder.java From jts with GNU Lesser General Public License v2.1

4 votes

private void add(LineString lineString) {
  CoordinateSequence seq = lineString.getCoordinateSequence();
  for (int i = 1; i < seq.size(); i++) {
    graph.addEdge(seq.getCoordinate(i-1), seq.getCoordinate(i));
  }
}