Use latitude per pixel resolution in LevelSet calcualtions.

Author: EMaksymenko

worldwind/src/main/java/gov/nasa/worldwind/util/LevelSet.java

@@ -204,7 +204,7 @@ public Level levelForResolution(double radiansPerPixel) {
         }
 
         double degreesPerPixel = Math.toDegrees(radiansPerPixel);
-        double firstLevelDegreesPerPixel = Math.max(this.firstLevelDelta.longitude / this.tileWidth, this.firstLevelDelta.latitude / this.tileHeight);
+        double firstLevelDegreesPerPixel = this.firstLevelDelta.latitude / this.tileHeight;
         double level = Math.log(firstLevelDegreesPerPixel / degreesPerPixel) / Math.log(2); // fractional level address
         int levelNumber = (int) Math.round(level); // nearest neighbor level
 

worldwind/src/main/java/gov/nasa/worldwind/util/LevelSetConfig.java

@@ -97,7 +97,7 @@ public int numLevelsForResolution(double radiansPerPixel) {
         }
 
         double degreesPerPixel = Math.toDegrees(radiansPerPixel);
-        double firstLevelDegreesPerPixel = Math.max(this.firstLevelDelta.longitude / this.tileWidth, this.firstLevelDelta.latitude / this.tileHeight);
+        double firstLevelDegreesPerPixel = this.firstLevelDelta.latitude / this.tileHeight;
         double level = Math.log(firstLevelDegreesPerPixel / degreesPerPixel) / Math.log(2); // fractional level address
         int levelNumber = (int) Math.ceil(level); // ceiling captures the resolution
 
@@ -126,7 +126,7 @@ public int numLevelsForMinResolution(double radiansPerPixel) {
         }
 
         double degreesPerPixel = Math.toDegrees(radiansPerPixel);
-        double firstLevelDegreesPerPixel = Math.max(this.firstLevelDelta.longitude / this.tileWidth, this.firstLevelDelta.latitude / this.tileHeight);
+        double firstLevelDegreesPerPixel = this.firstLevelDelta.latitude / this.tileHeight;
         double level = Math.log(firstLevelDegreesPerPixel / degreesPerPixel) / Math.log(2); // fractional level address
         int levelNumber = (int) Math.floor(level); // floor prevents exceeding the min scale