--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/backend/src/main/java/org/dive4elements/river/importer/parsers/tim/Line.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,34 @@
+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 :