Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / threedee / ThreeDModel.java

diff --git a/src/tim/prune/threedee/ThreeDModel.java b/src/tim/prune/threedee/ThreeDModel.java
new file mode 100644 (file)
index 0000000..abe166c
--- /dev/null
+++ b/src/tim/prune/threedee/ThreeDModel.java
@@ -0,0 +1,203 @@
+package tim.prune.threedee;
+
+import tim.prune.data.DataPoint;
+import tim.prune.data.PointScaler;
+import tim.prune.data.Track;
+
+/**
+ * Class to hold a 3d model of the track data,
+ * including all points and scaling operations.
+ * Used by java3d and also Pov export functions
+ */
+public class ThreeDModel
+{
+       private Track _track = null;
+       private Track _terrainTrack = null;
+       private PointScaler _scaler = null;
+       private double _scaleFactor = 1.0;
+       private double _altFactor = 1.0;
+       private double _externalScaleFactor = 1.0;
+       // MAYBE: How to store rods (lifts) in data?
+       private byte[] _pointTypes = null;
+       private byte[] _pointHeights = null;
+
+       // Constants for point types
+       public static final byte POINT_TYPE_WAYPOINT      = 1;
+       public static final byte POINT_TYPE_NORMAL_POINT  = 2;
+       public static final byte POINT_TYPE_SEGMENT_START = 3;
+
+
+       /**
+        * Constructor
+        * @param inTrack Track object
+        */
+       public ThreeDModel(Track inTrack)
+       {
+               _track = inTrack;
+       }
+
+
+       /**
+        * @param inTrack terrain track to set
+        */
+       public void setTerrain(Track inTrack)
+       {
+               _terrainTrack = inTrack;
+       }
+
+       /**
+        * @return the number of points in the model
+        */
+       public int getNumPoints()
+       {
+               if (_track == null) return 0;
+               return _track.getNumPoints();
+       }
+
+       /**
+        * @param inFactor altitude exaggeration factor (default 1.0)
+        */
+       public void setAltitudeFactor(double inFactor)
+       {
+               _altFactor = inFactor;
+       }
+
+       /**
+        * @param inSize size of model
+        */
+       public void setModelSize(double inSize)
+       {
+               _externalScaleFactor = inSize;
+       }
+
+       /**
+        * Scale all points and calculate factors
+        */
+       public void scale()
+       {
+               // Use PointScaler to sort out x and y values
+               _scaler = new PointScaler(_track);
+               _scaler.addTerrain(_terrainTrack);
+               _scaler.scale(); // Add 10% border
+
+               // cap altitude scale factor if it's too big
+               double maxAlt = _scaler.getAltitudeRange() * _altFactor;
+               if (maxAlt > 0.5)
+               {
+                       // capped
+                       // System.out.println("Capped alt factor from " + _altFactor + " to " + (_altFactor * 0.5 / maxAlt));
+                       _altFactor = _altFactor * 0.5 / maxAlt;
+               }
+
+               // calculate point types and height codes
+               calculatePointTypes();
+       }
+
+
+       /**
+        * Calculate the point types and height codes
+        */
+       private void calculatePointTypes()
+       {
+               int numPoints = getNumPoints();
+               _pointTypes = new byte[numPoints];
+               _pointHeights = new byte[numPoints];
+               // Loop over points in track
+               for (int i=0; i<numPoints; i++)
+               {
+                       DataPoint point = _track.getPoint(i);
+                       _pointTypes[i] = (point.isWaypoint()?POINT_TYPE_WAYPOINT:
+                               (point.getSegmentStart()?POINT_TYPE_SEGMENT_START:POINT_TYPE_NORMAL_POINT));
+                       _pointHeights[i] = (byte) (point.getAltitude().getMetricValue() / 500);
+               }
+       }
+
+
+       /**
+        * Get the scaled horizontal value for the specified point
+        * @param inIndex index of point
+        * @return scaled horizontal value
+        */
+       public double getScaledHorizValue(int inIndex)
+       {
+               return _scaler.getHorizValue(inIndex) * _scaleFactor * _externalScaleFactor;
+       }
+
+       /**
+        * Get the scaled vertical value for the specified point
+        * @param inIndex index of point
+        * @return scaled vertical value
+        */
+       public double getScaledVertValue(int inIndex)
+       {
+               return _scaler.getVertValue(inIndex) * _scaleFactor * _externalScaleFactor;
+       }
+
+       /**
+        * Get the scaled altitude value for the specified point
+        * @param inIndex index of point
+        * @return scaled altitude value
+        */
+       public double getScaledAltValue(int inIndex)
+       {
+               // if no altitude, just return 0
+               double altVal = _scaler.getAltValue(inIndex);
+               if (altVal <= 0.0) return 0.0;
+               // scale according to exaggeration factor
+               return altVal * _altFactor * _externalScaleFactor;
+       }
+
+
+       /**
+        * Get the scaled horizontal value for the specified terrain point
+        * @param inIndex index of point
+        * @return scaled horizontal value
+        */
+       public double getScaledTerrainHorizValue(int inIndex)
+       {
+               return _scaler.getTerrainHorizValue(inIndex) * _scaleFactor * _externalScaleFactor;
+       }
+
+       /**
+        * Get the scaled vertical value for the specified terrain point
+        * @param inIndex index of point
+        * @return scaled vertical value
+        */
+       public double getScaledTerrainVertValue(int inIndex)
+       {
+               return _scaler.getTerrainVertValue(inIndex) * _scaleFactor * _externalScaleFactor;
+       }
+
+       /**
+        * Get the scaled altitude value for the specified terrain point
+        * @param inIndex index of point
+        * @return scaled altitude value
+        */
+       public double getScaledTerrainValue(int inIndex)
+       {
+               // if no altitude, just return 0
+               double altVal = _scaler.getTerrainAltValue(inIndex);
+               if (altVal <= 0.0) return 0.0;
+               // don't scale by scale factor, needs to be unscaled
+               return altVal * _altFactor;
+       }
+
+
+       /**
+        * @param inIndex index of point, starting at 0
+        * @return point type, either POINT_TYPE_WAYPOINT or POINT_TYPE_NORMAL_POINT
+        */
+       public byte getPointType(int inIndex)
+       {
+               return _pointTypes[inIndex];
+       }
+
+       /**
+        * @param inIndex index of point, starting at 0
+        * @return point height code
+        */
+       public byte getPointHeightCode(int inIndex)
+       {
+               return _pointHeights[inIndex];
+       }
+}