Update leaflet.textpath.js

leaflet.textpath.js

@@ -121,12 +121,26 @@ var PolylineTextPath = {
             textNode.setAttribute('dx', ((pathWidth / 2) - (textWidth / 2)));
         }
 
-        if (options.flipvertical) {   
+	/* Change label rotation (if required) */
+        if (options.hasOwnProperty(orientation)) {   
+		var rotateAngle = 0;
+		switch (options.orientation)
+		{
+			case "flip":
+				rotateAngle = 180;
+				break;
+			case "perpendicular"
+				rotateAngle = 90;
+				break;
+			default:
+				rotateAngle = options.orientation;
+		}
+
 		var rotatecenterX = (textNode.getBBox().x + textNode.getBBox().width / 2);
 		var rotatecenterY = (textNode.getBBox().y + textNode.getBBox().height / 2);			
-		textNode.setAttribute('transform', 'rotate(180 ' + rotatecenterX + ' ' + rotatecenterY + ')');			
+		textNode.setAttribute('transform', 'rotate(' + rotateAngle + ' '  + rotatecenterX + ' ' + rotatecenterY + ')');			
 	}
-
+	
         /* Initialize mouse events for the additional nodes */
         if (this.options.clickable) {
             if (L.Browser.svg || !L.Browser.vml) {
@@ -159,46 +173,6 @@ L.LayerGroup.include({
     }
 });
 
-/* Functions to compute line direction to correct text orientation
- * Note: only generic, in future could check each line segment.
- */
-
-/* Calculate bearing between start and end of line */
-function getBearing(Lat1, Lon1, Lat2, Lon2) {
-  var dLon = Lon2.toRadians() - Lon1.toRadians();
-  var dPhi = Math.log(Math.tan(Lat2.toRadians() / 2 + Math.PI/4) / Math.tan(Lat1.toRadians()/2 + Math.PI/4));
-  if (Math.abs(dLon) > Math.PI){
-    if (dLon > 0.0) {
-      dLon = -(2.0 * Math.PI - dLon);
-    } else {
-      dLon = (2.0 * Math.PI + dLon);
-    }
-  }
-
-  return (Math.atan2(dLon, dPhi)) + 360).toDegrees() % 360;
-}
-
-/* Convert bearing into a generic direction. Lines heading North or East should have their labels flipped */
-function correctLabelOrientation (b) {
-    if (b >= 45 && b =< 135) {
-      return true; /* North */
-    } else if (b >= 136 && b =< 225) {
-      return true; /* East */
-    } else if (b >= 226 && b =< 315) {
-      return false; /* South */
-    } else {
-      return false; /* West */
-    }
-}
-
-/* Convert Degrees to Radians */
-Number.prototype.toRadians = function() { 
-    return (this.valueOf() * Math.PI) / 180; 
-} 
 
-/* Convert Radians to Degrees */
-Number.prototype.toDegrees = function() { 
-    return this.valueOf() * (180 * Math.PI); 
-} 
 
 })();