altosuilib: Add distance measuring line to site map.

[fw/altos] / altosuilib / AltosSiteMapTile.java

diff --git a/altosuilib/AltosSiteMapTile.java b/altosuilib/AltosSiteMapTile.java
index 9610b248c994e5856dc5cb446e8fb41b6913e49a..09f184a37869cf121f19e3f556b535f10ca7e4ea 100644 (file)
--- a/altosuilib/AltosSiteMapTile.java
+++ b/altosuilib/AltosSiteMapTile.java
@@ -44,6 +44,9 @@ public class AltosSiteMapTile extends JComponent {
 
        Point2D.Double  boost;
        Point2D.Double  landed;
+       Line2D.Double   line;
+       double          line_course;
+       double          line_dist;
 
        LinkedList<AltosPoint>  points;
 
@@ -81,6 +84,7 @@ public class AltosSiteMapTile extends JComponent {
                file = null;
                status = AltosSiteMapCache.success;
                queue_repaint();
+               line = null;
        }
 
        static Color stateColors[] = {
@@ -106,6 +110,47 @@ public class AltosSiteMapTile extends JComponent {
                queue_repaint();
        }
 
+       public void set_line(Line2D.Double line, double distance) {
+               this.line = line;
+               line_dist = distance;
+               queue_repaint();
+       }
+
+       private String line_dist() {
+               String  format;
+               double  distance = line_dist;
+
+               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);
+       }
+
        public void paint(Graphics g) {
                Graphics2D      g2d = (Graphics2D) g;
                AltosPoint      prev = null;
@@ -143,7 +188,7 @@ public class AltosSiteMapTile extends JComponent {
                                float x = getWidth() / 2.0f;
                                float y = getHeight() / 2.0f;
                                x = x - (float) bounds.getWidth() / 2.0f;
-                               y = y - (float) bounds.getHeight() / 2.0f;
+                               y = y + (float) bounds.getHeight() / 2.0f;
                                g2d.setColor(Color.BLACK);
                                g2d.drawString(message, x, y);
                        }
@@ -171,6 +216,27 @@ public class AltosSiteMapTile extends JComponent {
                        g2d.setColor(Color.BLACK);
                        draw_circle(g2d, landed);
                }
+
+               if (line != null) {
+                       g2d.setColor(Color.BLUE);
+                       g2d.draw(line);
+
+                       String  message = line_dist();
+                       g2d.setFont(font);
+                       g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+                       Rectangle2D     bounds;
+                       bounds = font.getStringBounds(message, g2d.getFontRenderContext());
+
+                       float x = (float) line.x1;
+                       float y = (float) line.y1 + (float) bounds.getHeight() / 2.0f;
+
+                       if (line.x1 < line.x2) {
+                               x -= (float) bounds.getWidth() + 2.0f;
+                       } else {
+                               x += 2.0f;
+                       }
+                       g2d.drawString(message, x, y);
+               }
        }
 
        public synchronized void show(int state, Point2D.Double last_pt, Point2D.Double pt)