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Line.java
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146 lines (111 loc) · 4.79 KB
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package javaxt.geospatial.geometry;
//******************************************************************************
//** Line Class - By Peter Borissow
//******************************************************************************
/**
* Basic Structure for storing lines
*
******************************************************************************/
public class Line implements Geometry {
private Points Points = null;
private String srs = "EPSG:4326";
//**************************************************************************
//** Creates a new instance of Line
//**************************************************************************
public Line(){
}
public Line(Point[] Points){
this.Points = new Points(Points);
}
public Line(Points Points){
this.Points = Points;
}
//**************************************************************************
//** getSRS
//**************************************************************************
//** Sets the srs attribute for this Geometry. */
public void setSRS(String srsName){
if (srsName==null) srs = "";
else srs = srsName.trim();
}
//**************************************************************************
//** getSRS
//**************************************************************************
//** Returns the srs name of this Geometry. */
public String getSRS(){
return srs;
}
//**************************************************************************
//** getName
//**************************************************************************
//** Returns the name of this Geometry. */
public String getName(){
return new Geometry.Name(this).toString();
}
//**************************************************************************
//** getPoints
//**************************************************************************
//** Returns an array of points that compose this Geometry. */
public Point[] getPoints(){
return Points.getPoints();
}
//**************************************************************************
//** addPoint
//**************************************************************************
/** Used to append a point to an array of points */
public void addPoint(Point Coordinate){
if (Coordinate==null) return;
else{
Points.addPoint(Coordinate);
}
}
//**************************************************************************
//** addPoints
//**************************************************************************
/** Used to append a point or multiple points to an array of points.
* Attempts to convert input string into coordinate touples.
*/
/*
public void addPoints(String Coordinates){
Points.addPoints(Coordinates);
}
*/
//**************************************************************************
//** toString
//**************************************************************************
/** Used to convert a line to a String */
public String toString(String CoordinateSeparator, String TupleSeparator){
if (Points==null) return "";
else{
return Points.toString(CoordinateSeparator, TupleSeparator);
}
}
//**************************************************************************
//** toGML
//**************************************************************************
/** Used to convert a line to GML (xml fragment) */
public String toGML(){
if (Points==null) return "";
else{
String srsName = " srsName=\"" + srs + "\"";
if (srs.length()==0) srsName = "";
StringBuffer Coordinates = new StringBuffer();
Coordinates.append("<gml:LineString" + srsName + ">");
Coordinates.append("<gml:coordinates>");
Coordinates.append(toString(",", " "));
Coordinates.append("</gml:coordinates>");
Coordinates.append("</gml:LineString>");
return Coordinates.toString().trim();
}
}
//**************************************************************************
//** toString
//**************************************************************************
/** Used to return a Well-known Text (WKT) representation of the line. */
public String toString(){
if (Points==null || Points.getLength()<=0) return null;
else{
return "LINESTRING((" + toString(" ", ", ") + "))";
}
}
}