Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/StaticWKmsArtifact.java @ 4031:e4e345d81a65
issue889/2
| author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
|---|---|
| date | Thu, 04 Oct 2012 14:54:44 +0200 |
| parents | f68d6dcaea94 |
| children | 58864f4f6e3b |
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| 4030:4bc58d6ee9db | 4031:e4e345d81a65 |
|---|---|
| 263 * Returns -1 if not found. | 263 * Returns -1 if not found. |
| 264 */ | 264 */ |
| 265 public static double getWAtKmLin(WKms wkms, double km) { | 265 public static double getWAtKmLin(WKms wkms, double km) { |
| 266 // Uninformed search. | 266 // Uninformed search. |
| 267 int size = wkms.size(); | 267 int size = wkms.size(); |
| 268 if (size == 0) { | |
| 269 return -1; | |
| 270 } | |
| 268 int idx = 0; | 271 int idx = 0; |
| 269 boolean kmIncreasing = (wkms.getKm(0) < wkms.getKm(wkms.size()-1)) | 272 |
| 270 ? true : false; | 273 boolean kmIncreasing; |
| 274 if (size == 1) { | |
| 275 kmIncreasing = true; | |
| 276 } | |
| 277 else { | |
| 278 kmIncreasing = (wkms.getKm(0) < wkms.getKm(wkms.size()-1)) | |
| 279 ? true : false; | |
| 280 } | |
| 271 if (kmIncreasing) { | 281 if (kmIncreasing) { |
| 272 while (idx < size && wkms.getKm(idx) < km) { | 282 while (idx < size && wkms.getKm(idx) < km) { |
| 273 idx++; | 283 idx++; |
| 274 } | 284 } |
| 275 } | 285 } |
| 277 idx = wkms.size() -1; | 287 idx = wkms.size() -1; |
| 278 while (idx > 0 && wkms.getKm(idx) > km) { | 288 while (idx > 0 && wkms.getKm(idx) > km) { |
| 279 idx--; | 289 idx--; |
| 280 } | 290 } |
| 281 } | 291 } |
| 292 | |
| 293 if (wkms.getKm(idx) == km) { | |
| 294 return wkms.getW(idx); | |
| 295 } | |
| 282 | 296 |
| 283 if (idx == size -1 || idx == 0) { | 297 if (idx == size -1 || idx == 0) { |
| 284 return -1; | 298 return -1; |
| 285 } | 299 } |
| 286 | 300 |