Examples of com.vividsolutions.jts.geom.Geometry.buffer()

com.vividsolutions.jts.geom.Geometry.buffer()

Computes a buffer area around this geometry having the given width. The buffer of a Geometry is the Minkowski sum or difference of the geometry with a disc of radius abs(distance).

Mathematically-exact buffer area boundaries can contain circular arcs. To represent these arcs using linear geometry they must be approximated with line segments. The buffer geometry is constructed using 8 segments per quadrant to approximate the circular arcs. The end cap style is CAP_ROUND.

The buffer operation always returns a polygonal result. The negative or zero-distance buffer of lines and points is always an empty {@link Polygon}. This is also the result for the buffers of degenerate (zero-area) polygons. @param distance the width of the buffer (may be positive, negative or 0) @return a polygonal geometry representing the buffer region (which may beempty) @throws TopologyException if a robustness error occurs @see #buffer(double,int) @see #buffer(double,int,int)

  {    
    List bufs = new ArrayList();
    for (Iterator it = new GeometryCollectionIterator(g); it.hasNext(); ) {
      Geometry comp = (Geometry) it.next();
      if (comp instanceof GeometryCollection) continue;
      bufs.add(comp.buffer(distance));
    }
    return FunctionsUtil.getFactoryOrDefault(g)
            .createGeometryCollection(GeometryFactory.toGeometryArray(bufs));
  }

    
  }
  
  public Geometry getFinalGeometry(){
    Geometry g = gf.createLineString(new Coordinate[]{a.pos, b.pos});
    return g.buffer(width/2, 2, BufferParameters.CAP_ROUND);
  }
  
  public LineString getLineString(){
    return gf.createLineString(new Coordinate[]{a.pos, b.pos});
  }

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