Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/utils/DistanceCalculator.java @ 806:2cea76f1112e
Added Javadoc in utils package.
gnv-artifacts/trunk@888 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Thu, 08 Apr 2010 13:10:39 +0000 |
| parents | c4156275c1e1 |
| children | a645bd23c1c8 |
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| 805:bb7afd783321 | 806:2cea76f1112e |
|---|---|
| 4 import com.vividsolutions.jts.geom.Point; | 4 import com.vividsolutions.jts.geom.Point; |
| 5 | 5 |
| 6 import java.util.List; | 6 import java.util.List; |
| 7 | 7 |
| 8 /** | 8 /** |
| 9 * A helper class to calculate distances between points and coordinates. | |
| 10 * | |
| 9 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a> | 11 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a> |
| 10 * | 12 * |
| 11 */ | 13 */ |
| 12 public class DistanceCalculator { | 14 public class DistanceCalculator { |
| 13 | 15 |
| 19 * Constructor | 21 * Constructor |
| 20 */ | 22 */ |
| 21 public DistanceCalculator() { | 23 public DistanceCalculator() { |
| 22 } | 24 } |
| 23 | 25 |
| 26 | |
| 27 /** | |
| 28 * Calculates the distance between two points. | |
| 29 * | |
| 30 * @param p1 First point. | |
| 31 * @param p2 Second point. | |
| 32 * @return the distance. | |
| 33 */ | |
| 24 public static double calculateDistance(Point p1, Point p2){ | 34 public static double calculateDistance(Point p1, Point p2){ |
| 25 return calculateDistance(p1.getCoordinate(), p2.getCoordinate()); | 35 return calculateDistance(p1.getCoordinate(), p2.getCoordinate()); |
| 26 } | 36 } |
| 27 | 37 |
| 38 | |
| 39 /** | |
| 40 * Calculates the distance between two coordinates. | |
| 41 * | |
| 42 * @param p1 First coordinate. | |
| 43 * @param p2 Second coordinate. | |
| 44 * @return the distance. | |
| 45 */ | |
| 28 public static double calculateDistance(Coordinate p1, Coordinate p2){ | 46 public static double calculateDistance(Coordinate p1, Coordinate p2){ |
| 29 double resultValue = 0.0; | 47 double resultValue = 0.0; |
| 30 | 48 |
| 31 double b1 = p1.y; | 49 double b1 = p1.y; |
| 32 double b2 = p2.y; | 50 double b2 = p2.y; |
| 64 (Math.sin(G) * Math.sin(G)))); | 82 (Math.sin(G) * Math.sin(G)))); |
| 65 | 83 |
| 66 return resultValue; | 84 return resultValue; |
| 67 } | 85 } |
| 68 | 86 |
| 87 /** | |
| 88 * Calculates the length of a path specified by coordinates in <i>path</i>. | |
| 89 * | |
| 90 * @param path A list of coordinates. | |
| 91 * @return the length of the given path. | |
| 92 */ | |
| 69 public static final double calculateDistance(List<Coordinate> path) { | 93 public static final double calculateDistance(List<Coordinate> path) { |
| 70 int N = path.size(); | 94 int N = path.size(); |
| 71 if (N < 2) { | 95 if (N < 2) { |
| 72 return 0d; | 96 return 0d; |
| 73 } | 97 } |
| 77 } | 101 } |
| 78 return sum; | 102 return sum; |
| 79 } | 103 } |
| 80 | 104 |
| 81 } | 105 } |
| 106 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |