Mercurial > dive4elements > river
view backend/src/main/java/org/dive4elements/river/importer/parsers/tim/Line.java @ 7639:11bc2d6a2059
Removed obsolete imports.
author | Sascha L. Teichmann <teichmann@intevation.de> |
---|---|
date | Tue, 03 Dec 2013 16:11:54 +0100 |
parents | 4c3ccf2b0304 |
children |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.importer.parsers.tim; /** Two coordinates and a helper. */ 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 :