org.deegree.graphics.displayelements
Class CurveWalker

java.lang.Object
  org.deegree.graphics.displayelements.CurveWalker

 class CurveWalker
extends Object

Walks along a given curve and generates positions on the line string in regular intervals (i.e. a series of points on the line string with steps of the same distance).

Version:

$Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Thu, 18 Jun 2009) $

Author:

Constructor Summary

CurveWalker(Rectangle roi)
Creates a new instance of CurveWalker.

Method Summary

(package private) ArrayList<double[]>

createPositions(int[][] pos, double width, boolean polygon) Determines positions on the given curve where a caption could be drawn.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CurveWalker

CurveWalker(Rectangle roi)

Creates a new instance of CurveWalker. The region of interest (where positions are actually needed, because they are visible) is specified by the given Rectangle.

Parameters:

roi - region of interest (visibile area)

Method Detail

createPositions

ArrayList<double[]> createPositions(int[][] pos,
                                    double width,
                                    boolean polygon)

Determines positions on the given curve where a caption could be drawn. For each of these positions, three candidates are produced; one on the line, one above of it and one below.

Parameters:

pos -

width - distance between single positions

polygon - true if the positions denote a polygon

Returns:

ArrayList containing positions