Merge branch 'master' of ssh://git.gag.com/scm/git/fw/altos

[fw/altos] / altoslib / AltosMapLine.java

diff --git a/altoslib/AltosMapLine.java b/altoslib/AltosMapLine.java
new file mode 100644 (file)
index 0000000..23a6f88
--- /dev/null
+++ b/altoslib/AltosMapLine.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright © 2014 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.altoslib_7;
+
+import java.io.*;
+import java.lang.Math;
+import java.util.*;
+import java.util.concurrent.*;
+
+public abstract class AltosMapLine {
+       public AltosLatLon      start, end;
+
+       static public int stroke_width = 6;
+
+       public abstract void paint(AltosMapTransform t);
+
+       private AltosLatLon lat_lon(AltosPointInt pt, AltosMapTransform t) {
+               return t.screen_lat_lon(pt);
+       }
+
+       public void dragged(AltosPointInt pt, AltosMapTransform t) {
+               end = lat_lon(pt, t);
+       }
+
+       public void pressed(AltosPointInt pt, AltosMapTransform t) {
+               start = lat_lon(pt, t);
+               end = null;
+       }
+
+       public String line_dist() {
+               String  format;
+               AltosGreatCircle        g = new AltosGreatCircle(start.lat, start.lon,
+                                                                end.lat, end.lon);
+               double  distance = g.distance;
+
+               if (AltosConvert.imperial_units) {
+                       distance = AltosConvert.meters_to_feet(distance);
+                       if (distance < 10000) {
+                               format = "%4.0fft";
+                       } else {
+                               distance /= 5280;
+                               if (distance < 10)
+                                       format = "%5.3fmi";
+                               else if (distance < 100)
+                                       format = "%5.2fmi";
+                               else if (distance < 1000)
+                                       format = "%5.1fmi";
+                               else
+                                       format = "%5.0fmi";
+                       }
+               } else {
+                       if (distance < 10000) {
+                               format = "%4.0fm";
+                       } else {
+                               distance /= 1000;
+                               if (distance < 100)
+                                       format = "%5.2fkm";
+                               else if (distance < 1000)
+                                       format = "%5.1fkm";
+                               else
+                                       format = "%5.0fkm";
+                       }
+               }
+               return String.format(format, distance);
+       }
+}