pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / spatial / src / java / org / apache / lucene / spatial / tier / projections / SinusoidalProjector.java

diff --git a/lucene-java-3.5.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/tier/projections/SinusoidalProjector.java b/lucene-java-3.5.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/tier/projections/SinusoidalProjector.java
new file mode 100644 (file)
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+++ b/lucene-java-3.5.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/tier/projections/SinusoidalProjector.java
@@ -0,0 +1,86 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.lucene.spatial.tier.projections;
+
+/**
+ * Based on Sinusoidal Projections
+ * Project a latitude / longitude on a 2D cartesian map
+ * <p/>
+ * THIS PROJECTION IS WRONG, but it's not going to be fixed b/c it will break a lot of existing tests, plus we are deprecating
+ * most of the existing spatial and replacing with a more reliable approach.
+ *
+ * <p><font color="red"><b>NOTE:</b> This API is still in
+ * flux and might change in incompatible ways in the next
+ * release.</font>
+ *
+ * @deprecated Until we can put in place proper tests and a proper fix. 
+ */
+@Deprecated
+public class SinusoidalProjector implements IProjector {
+
+
+  public String coordsAsString(double latitude, double longitude) {
+    return null;
+  }
+
+  public double[] coords(double latitude, double longitude) {
+    double rlat = Math.toRadians(latitude);
+    double rlong = Math.toRadians(longitude);
+    double nlat = rlong * Math.cos(rlat);
+    double r[] = {nlat, rlong};
+    return r;
+    
+  }
+  
+}
+
+/*
+This whole file should really be:*/
+
+/**
+ * Based on Sinusoidal Projections
+ * Project a latitude / longitude on a 2D cartesian map using the Prime Meridian as the "central meridian"
+ *
+ * See http://en.wikipedia.org/wiki/Sinusoidal_projection
+ *
+ * <p><font color="red"><b>NOTE:</b> This API is still in
+ * flux and might change in incompatible ways in the next
+ * release.</font>
+ */
+/*
+public class SinusoidalProjector implements IProjector {
+
+
+  public String coordsAsString(double latitude, double longitude) {
+    double [] coords = coords(latitude, longitude);
+    return coords[0] + "," + coords[1];
+  }
+
+  public double[] coords(double latitude, double longitude) {
+    double rlat = latitude * DistanceUtils.DEGREES_TO_RADIANS;
+    double rlong = longitude * DistanceUtils.DEGREES_TO_RADIANS;
+    double x = rlong * Math.cos(rlat);
+    return new double[]{x, rlat};
+
+  }
+
+}
+*/
+
+
+