git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/data-analysis/EcologicalEngineGeoSpatialExtension@120127 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/dataanalysis/geo/utils/GridCWPConverter.java

@@ -0,0 +1,105 @@
+package org.gcube.dataanalysis.geo.utils;
+
+public class GridCWPConverter {
+
+
+	public static void main(String[] args) {
+		GridCWPConverter gridder = new GridCWPConverter();
+		gridder.gridCodeToPair("5206064");
+		System.out.println(gridder.outlon+","+gridder.outlat+","+gridder.gridresolution);
+	}
+
+	public float outlon;
+	public float outlat;
+	public int gridresolution;
+	
+	public void gridCodeToPair (String grid){
+		char resolution = grid.charAt(0);
+		int quadrant = Integer.parseInt(""+grid.charAt(1));
+		float lat = Float.parseFloat(grid.substring(2,4));
+		float lon = Float.parseFloat(grid.substring(4));
+		int Xr = getResolutionX(resolution);
+//		int Yr = getResolutionY(resolution);
+		gridresolution = Xr;
+		float latAdj = adjustLat(lat, quadrant);
+		float lonAdj = adjustLon(lon, quadrant);
+		int resolutionY = getResolutionY(resolution);
+		int resolutionX = getResolutionX(resolution);
+		
+		float centerLat = getCenterLat(latAdj, resolutionY, quadrant);
+		float centerLon = getCenterLon(lonAdj, resolutionX, quadrant);
+		
+//		System.out.println("Xr:"+Xr+" Yr:"+Yr+" Lat:"+lat+" Lon:"+lon+" LatAdj:"+latAdj+" LonAdj:"+lonAdj+" Q:"+quadrant+" centLon:"+centerLon+" centLat:"+centerLat);
+		
+		outlat = centerLat;
+		outlon = centerLon;
+		
+	}
+	
+	public float getCenterLat(float lat, int resolutionY, int quadrant){
+		float halfres = (float) resolutionY/2f;
+		
+		if (quadrant == 1 || quadrant == 4) 
+			return lat+halfres;
+		else
+			return lat-halfres;
+	}
+	
+	public float getCenterLon(float lon, int resolutionX, int quadrant){
+		float halfres = (float) resolutionX/2f;
+		
+		if (quadrant == 1 || quadrant == 2) 
+			return lon+halfres;
+		else
+			return lon-halfres;
+	}
+	
+	public float adjustLat(float lat,int quadrant){
+		if (quadrant==1 || quadrant==4)
+			return lat;
+		else
+			return -1*lat;
+	}
+	
+	public float adjustLon(float lon,int quadrant){
+		if (quadrant==1 || quadrant==2)
+			return lon;
+		else
+			return -1*lon;
+	}
+	
+	public int getResolutionY(char token){
+		if (token == '5')
+			return 1;
+		else if (token == '6')
+			return 5;
+		else if (token == '1')
+			return 5;
+		else if (token == '2')
+			return 10;
+		else if (token == '3')
+			return 10;
+		else if (token == '4')
+			return 20;
+		else
+			return -1;
+	}
+	
+	public int getResolutionX(char token){
+		if (token == '5')
+			return 1;
+		else if (token == '6')
+			return 5;
+		else if (token == '1')
+			return 10;
+		else if (token == '2')
+			return 20;
+		else if (token == '3')
+			return 10;
+		else if (token == '4')
+			return 20;
+		else
+			return -1;
+	}
+	
+}