Version 16.3, July 2014

[GpsPrune.git] / tim / prune / save / PovExporter.java

diff --git a/tim/prune/save/PovExporter.java b/tim/prune/save/PovExporter.java
index 1f29d4a70bb075420db66a471ca7a9d7e730c28d..19e4485c66bf0e09ec576793804bdf88c4187591 100644 (file)
--- a/tim/prune/save/PovExporter.java
+++ b/tim/prune/save/PovExporter.java
@@ -43,6 +43,8 @@ import tim.prune.gui.map.MapSource;
 import tim.prune.gui.map.MapSourceLibrary;
 import tim.prune.load.GenericFileFilter;
 import tim.prune.threedee.ImageDefinition;
+import tim.prune.threedee.TerrainCache;
+import tim.prune.threedee.TerrainDefinition;
 import tim.prune.threedee.TerrainHelper;
 import tim.prune.threedee.ThreeDModel;
 
@@ -392,19 +394,29 @@ public class PovExporter extends Export3dFunction
                        if (useTerrain)
                        {
                                TerrainHelper terrainHelper = new TerrainHelper(_terrainPanel.getGridSize());
-                               Track terrainTrack = terrainHelper.createGridTrack(_track);
-                               // Get the altitudes from SRTM for all the points in the track
-                               LookupSrtmFunction srtmLookup = (LookupSrtmFunction) FunctionLibrary.FUNCTION_LOOKUP_SRTM;
-                               srtmLookup.begin(terrainTrack);
-                               while (srtmLookup.isRunning())
+                               // See if there's a previously saved terrain track we can reuse
+                               TerrainDefinition terrainDef = new TerrainDefinition(_terrainPanel.getUseTerrain(), _terrainPanel.getGridSize());
+                               Track terrainTrack = TerrainCache.getTerrainTrack(_app.getCurrentDataStatus(), terrainDef);
+                               if (terrainTrack == null)
                                {
-                                       try {
-                                               Thread.sleep(750);  // just polling in a wait loop isn't ideal but simple
+                                       // Construct the terrain track according to these extents and the grid size
+                                       terrainTrack = terrainHelper.createGridTrack(_track);
+                                       // Get the altitudes from SRTM for all the points in the track
+                                       LookupSrtmFunction srtmLookup = (LookupSrtmFunction) FunctionLibrary.FUNCTION_LOOKUP_SRTM;
+                                       srtmLookup.begin(terrainTrack);
+                                       while (srtmLookup.isRunning())
+                                       {
+                                               try {
+                                                       Thread.sleep(750);  // just polling in a wait loop isn't ideal but simple
+                                               }
+                                               catch (InterruptedException e) {}
                                        }
-                                       catch (InterruptedException e) {}
+                                       // Fix the voids
+                                       terrainHelper.fixVoids(terrainTrack);
+
+                                       // Store this back in the cache, maybe we'll need it again
+                                       TerrainCache.storeTerrainTrack(terrainTrack, _app.getCurrentDataStatus(), terrainDef);
                                }
-                               // Fix the voids
-                               terrainHelper.fixVoids(terrainTrack);
 
                                model.setTerrain(terrainTrack);
                                model.scale();