adjust VELOCITY_SCALE by map extent

addresses issue danwild#1, so we adjust particle animations based on current map extent
cloudybay · Mar 29, 2017 · 8d22805 · 8d22805
1 parent b0407c9
commit 8d22805
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Showing 3 changed files with 5 additions and 4 deletions.
diff --git a/dist/leaflet-velocity.js b/dist/leaflet-velocity.js
@@ -668,7 +668,8 @@ var Windy = function Windy(params) {
 	var interpolateField = function interpolateField(grid, bounds, extent, callback) {
 
 		var projection = {};
-		var velocityScale = VELOCITY_SCALE;
+		var mapArea = (extent.south - extent.north) * (extent.west - extent.east);
+		var velocityScale = VELOCITY_SCALE * Math.pow(mapArea, 0.4);
 
 		var columns = [];
 		var x = bounds.x;