Mercurial > dive4elements > river

comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/geom/Lines.java @ 2652:9d2a06c3a134

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added DataType for lines that also stores width, use it. Added HasLabel interface for some series. flys-artifacts/trunk@4318 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Fri, 27 Apr 2012 09:58:21 +0000
parents a6fa128e4654
children 0143b44631cc
comparison
equal deleted inserted replaced
2651:9e9eb9d97548 2652:9d2a06c3a134
11 11
12 import org.apache.log4j.Logger; 12 import org.apache.log4j.Logger;
13 13
14 import gnu.trove.TDoubleArrayList; 14 import gnu.trove.TDoubleArrayList;
15 15
16 /**
17 * Utility to create lines (intersect water with cross-section etc).
18 */
16 public class Lines 19 public class Lines
17 { 20 {
18 private static Logger log = Logger.getLogger(Lines.class); 21 private static Logger log = Logger.getLogger(Lines.class);
19 22
20 public static final double EPSILON = 1e-4; 23 public static final double EPSILON = 1e-4;
22 public static enum Mode { UNDEF, WET, DRY }; 25 public static enum Mode { UNDEF, WET, DRY };
23 26
24 protected Lines() { 27 protected Lines() {
25 } 28 }
26 29
30 /**
31 * Calculate the 'length' of the given lines.
32 */
27 public static double length(List<Line2D> lines) { 33 public static double length(List<Line2D> lines) {
28 double sum = 0d; 34 double sum = 0d;
29 for (Line2D line: lines) { 35 for (Line2D line: lines) {
30 double xDiff = line.getX1() - line.getX2(); 36 double xDiff = line.getX1() - line.getX2();
31 double yDiff = line.getY1() - line.getY2(); 37 double yDiff = line.getY1() - line.getY2();
259 } 265 }
260 266
261 return result; 267 return result;
262 } 268 }
263 269
264 public static double [][] createWaterLines( 270
271 /**
272 * Class holding points that form lines and the calculated length.
273 */
274 public static class LineData {
275 public double [][] points;
276 public double width;
277 public LineData(double[][] points, double width) {
278 this.points = points;
279 this.width = width;
280 }
281 }
282
283
284 public static LineData createWaterLines(
265 List<Point2D> points, 285 List<Point2D> points,
266 double waterlevel 286 double waterlevel
267 ) { 287 ) {
268 List<Line2D> lines = fillWater(points, waterlevel); 288 List<Line2D> lines = fillWater(points, waterlevel);
269 289
270 TDoubleArrayList lxs = new TDoubleArrayList(); 290 TDoubleArrayList lxs = new TDoubleArrayList();
271 TDoubleArrayList lys = new TDoubleArrayList(); 291 TDoubleArrayList lys = new TDoubleArrayList();
292 double linesLength = 0.0f;
272 293
273 for (Iterator<Line2D> iter = lines.iterator(); iter.hasNext();) { 294 for (Iterator<Line2D> iter = lines.iterator(); iter.hasNext();) {
274 Line2D l = iter.next(); 295 Line2D line = iter.next();
275 Point2D p1 = l.getP1(); 296 Point2D p1 = line.getP1();
276 Point2D p2 = l.getP2(); 297 Point2D p2 = line.getP2();
277 lxs.add(p1.getX()); 298 lxs.add(p1.getX());
278 lys.add(p1.getY()); 299 lys.add(p1.getY());
279 lxs.add(p2.getX()); 300 lxs.add(p2.getX());
280 lys.add(p2.getY()); 301 lys.add(p2.getY());
302
303 // Length calculation.
304 double xDiff = line.getX1() - line.getX2();
305 double yDiff = line.getY1() - line.getY2();
306 linesLength += Math.sqrt(xDiff*xDiff + yDiff*yDiff);
307
281 if (iter.hasNext()) { 308 if (iter.hasNext()) {
282 lxs.add(Double.NaN); 309 lxs.add(Double.NaN);
283 lys.add(Double.NaN); 310 lys.add(Double.NaN);
284 } 311 }
285 } 312 }
286 313
287 return new double [][] { lxs.toNativeArray(), lys.toNativeArray() }; 314 return new LineData(
315 new double [][] { lxs.toNativeArray(), lys.toNativeArray() },
316 linesLength
317 );
288 } 318 }
289 } 319 }
290 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : 320 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org