Added temporary rendering using tilted disparity, not actual

axes+offset.

src/main/java/com/elphel/imagej/tileprocessor/GroundPlane.java

@@ -167,8 +167,10 @@ public class GroundPlane {
 				sb.append("\t"+frac_good+"\t"+lla[0]+"\t"+lla[1]+"\t"+lla[2]);
 				sb.append("\t"+qenu[0]+"\t"+qenu[1]+"\t"+qenu[2]+"\t"+qenu[3]);
 				sb.append("\t"+ref_abs_atr_enu[0]+"\t"+ref_abs_atr_enu[1]+"\t"+ref_abs_atr_enu[2]);
+				if (gp.disparity_plane != null) {
 					sb.append("\t"+gp.disparity_plane[0]+"\t"+gp.disparity_plane[1]+"\t"+gp.disparity_plane[2]+"\n");
 				}
+			}
 			if (path!=null) {
 				String footer=(comment != null) ? ("Comment: "+comment): "";
 				CalibrationFileManagement.saveStringToFile (
@@ -207,7 +209,9 @@ public class GroundPlane {
 		properties.setProperty(prefix+"to_ground_xyzatr",String.format("%f, %f, %f, %f, %f, %f",
 				to_ground_xyzatr[0][0],to_ground_xyzatr[0][1],to_ground_xyzatr[0][2],
 				to_ground_xyzatr[1][0],to_ground_xyzatr[1][1],to_ground_xyzatr[1][2]));
+		if (disparity_plane != null) {
 			properties.setProperty(prefix+"disparity_plane",String.format("%f, %f, %f",disparity_plane[0],disparity_plane[1], disparity_plane[2]));
+		}
 		properties.setProperty(prefix+"frac_good",String.format("%f",frac_good));
 		properties.setProperty(prefix+"lla",String.format("%f, %f, %f",lla[0],lla[1], lla[2]));
 		properties.setProperty(prefix+"quat_enu",String.format("%f, %f, %f, %f",
@@ -846,7 +850,7 @@ public class GroundPlane {
 			int [] xy0 = {tilesX/2, tilesY/2};
 			double inf_disparity = ref_Clt.getDispInfinityRef();
 			double [] disparity_tilts = gp.getDisparityTilts();
-			
+			if (disparity_tilts != null) {
 				for (int i = 0; i < terrain_plane.length; i++) {
 					int x = i % tilesX;  
 					int y = i / tilesX;
@@ -854,6 +858,7 @@ public class GroundPlane {
 					double dy = y-xy0[1];
 					terrain_plane[i] = disparity_tilts[0] * dx +  disparity_tilts[1] * dy + disparity_tilts[2] + inf_disparity;
 				}
+			}
 		} else {
 			Arrays.fill(terrain_plane, corrected_disparity); // +0.3); // 260); // 0.256);
 		}