Examples of com.vividsolutions.jts.geom.LineSegment

com.vividsolutions.jts.geom.LineSegment
Represents a line segment defined by two {@link Coordinate}s. Provides methods to compute various geometric properties and relationships of line segments.
This class is designed to be easily mutable (to the extent of having its contained points public). This supports a common pattern of reusing a single LineSegment object as a way of computing segment properties on the segments defined by arrays or lists of {@link Coordinate}s. @version 1.7

  
  /**
   * returns the closest distance between point p and line segment s
   */
  public static final double distanceFromLineSegment(VectorXZ p, LineSegmentXZ s) {
    LineSegment sJTS = new LineSegment(s.p1.x, s.p1.z, s.p2.x, s.p2.z);
    return sJTS.distance(new Coordinate(p.x, p.z));
  }

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     * @param p0 the start point
     * @param p1 the end point
     * @param data an external data object
     */
    public Segment(Coordinate p0, Coordinate p1, Object data) {
        ls = new LineSegment(p0, p1);
        this.data = data;
    }

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     * 
     * @param p0 the start point
     * @param p1 the end point
     */
    public Segment(Coordinate p0, Coordinate p1) {
        ls = new LineSegment(p0, p1);
    }

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     * @param seg the encroached segment
     * @param encroachPt the encroaching point
     * @return the point at which to split the encroached segment
     */
    public Coordinate findSplitPoint(Segment seg, Coordinate encroachPt) {
        LineSegment lineSeg = seg.getLineSegment();
        double segLen = lineSeg.getLength();
        double midPtLen = segLen / 2;
        SplitSegment splitSeg = new SplitSegment(lineSeg);


        Coordinate projPt = projectedSplitPoint(seg, encroachPt);
        /**

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     * @param seg
     * @param encroachPt
     * @return
     */
    public static Coordinate projectedSplitPoint(Segment seg, Coordinate encroachPt) {
        LineSegment lineSeg = seg.getLineSegment();
        Coordinate projPt = lineSeg.project(encroachPt);
        return projPt;
    }

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    public void run( IProgressMonitor monitor ) throws Exception {


        display.addMouseListener(mouseListener);


        LineSegment l = new LineSegment(start, end);
        start = l.pointAlong(0.1);
        end = l.pointAlong(0.9);
        l = new LineSegment(start, end);


        Coordinate tmp = l.pointAlong(0.9);
        double distance = end.distance(tmp);
        Coordinate left = l.pointAlongOffset(0.5, distance / 2);
        Coordinate right = l.pointAlongOffset(0.5, -distance / 2);


        validArea = new Rectangle((int) start.x, (int) start.y, (int) (start.x + (end.x - start.x)),
                (int) (start.y + (end.y - start.y)));


        graphics.setLineWidth(3);

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                              int index) {


    List<DataSegmentIntersection> relationSegmIntersect = new ArrayList<DataSegmentIntersection>();


    Entry<LineSegment, LineSegment> item = iterator.next();
    LineSegment key = item.getKey();
    LineSegment value = item.getValue();


    SpecificLineBuilder lineBuilder = new SpecificLineBuilder();


    // mount the line that will intersect with the preBuild geometry.
    LineString subjectLine = lineBuilder.mountTheLine(key, value, gf);

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    lastOffset.setCoordinates(offset0);
    lastCoord.setCoordinate(coord0);


    // create the key and value.
    // key
    LineSegment referencedFromList = new LineSegment();
    referencedFromList.setCoordinates(vertexList.getSecondToLastItem(), vertexList.getLastItem());
    // value
    LineSegment fromOffset = new LineSegment();
    fromOffset.setCoordinates(offset0);


    offsetList.put(referencedFromList, fromOffset);
    lastOutsideTurn = outsideTurn;
  }

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  }


  private void addLastOffsetToList() {


    // key
    LineSegment derivatedFromList = new LineSegment();
    derivatedFromList.setCoordinates(vertexList.getSecondToLastItem(), vertexList.getLastItem());
    // value
    LineSegment referenceOffset = new LineSegment();
    referenceOffset.setCoordinates(offset0);


    offsetList.put(derivatedFromList, referenceOffset);
  }

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     * to calculate the arc center by finding the intersection of their normals
     * 
     * @return
     */
    public Coordinate getArcCenter() {
        LineSegment chord1 = new LineSegment(point1, point2);
        LineSegment chord2 = new LineSegment(point2, point3);


        final double normalLength = 1E7;
        LineSegment midPointNormal1 = getMidpointNormal(chord1, normalLength);
        LineSegment midPointNormal2 = getMidpointNormal(chord2, normalLength);


        Coordinate center = midPointNormal1.intersection(midPointNormal2);


        return center;
    }

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