Mercurial > dive4elements > river
changeset 4732:7fdddc6ba296
Initial version of support files for TIMParser, comments and TODOs by Felix Wolfsteller, Code by Sascha Teichmann.
author | Sascha Teichmann <sascha.teichmann@intevation.de> |
---|---|
date | Fri, 28 Dec 2012 15:01:12 +0100 |
parents | 7d9fcd322c45 |
children | e2e615109a2e |
files | flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/Coordinate.java flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/EpsilonComparator.java flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/LexiComparator.java flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/Line.java |
diffstat | 4 files changed, 102 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/Coordinate.java Fri Dec 28 15:01:12 2012 +0100 @@ -0,0 +1,26 @@ +package de.intevation.flys.importer.parsers.tim; + +public class Coordinate +{ + public double x; + public double y; + public double z; + + public Coordinate() { + } + + public Coordinate(Coordinate c) { + this(c.x, c.y, c.z); + } + + public Coordinate(double x, double y) { + this(x, y, 0d); + } + + public Coordinate(double x, double y, double z) { + this.x = x; + this.y = y; + this.z = z; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/EpsilonComparator.java Fri Dec 28 15:01:12 2012 +0100 @@ -0,0 +1,25 @@ +package de.intevation.flys.importer.parsers.tim; + +import java.util.Comparator; + +public class EpsilonComparator implements Comparator<Double> +{ + public static final double EPSILON = 1e-4; + + public static final EpsilonComparator CMP = new EpsilonComparator(EPSILON); + + private double epsilon; + + public EpsilonComparator(double epsilon) { + this.epsilon = epsilon; + } + + @Override + public int compare(Double a, Double b) { + double diff = a - b; + if (diff < -epsilon) return -1; + if (diff > epsilon) return +1; + return 0; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/LexiComparator.java Fri Dec 28 15:01:12 2012 +0100 @@ -0,0 +1,18 @@ +package de.intevation.flys.importer.parsers.tim; + +import java.util.Comparator; + +public class LexiComparator implements Comparator<Coordinate> { + + public static final LexiComparator CMP = new LexiComparator(); + + @Override + public int compare(Coordinate a, Coordinate b) { + if (a.x < b.x) return -1; + if (a.x > b.x) return +1; + if (a.y < b.y) return -1; + if (a.y > b.y) return +1; + return 0; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/Line.java Fri Dec 28 15:01:12 2012 +0100 @@ -0,0 +1,33 @@ +package de.intevation.flys.importer.parsers.tim; + +public class Line { + + public Coordinate a; + public Coordinate b; + + public Line() { + } + + public Line(Coordinate a, Coordinate b) { + this.a = a; + this.b = b; + } + + /** Project coordinate to line. */ + public double distanceToFirst(Coordinate c) { + + double nx = b.x - a.x; + double ny = b.y - a.y; + + double len = Math.sqrt(nx*nx + ny*ny); + + nx /= len; + ny /= len; + + double px = c.x - a.x; + double py = c.y - a.y; + + return nx*px + ny*py; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :