fix wind direction math. close leeoniya#970.

willfarrell · Jul 8, 2024 · 3a448dc · 3a448dc
1 parent e6fcc60
commit 3a448dc
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/demos/wind-direction.html b/demos/wind-direction.html
@@ -79,7 +79,7 @@
 							let yPx = u.valToPos(speeds[i], 'y2', true);
 
 							let len = 15;
-							let theta = dirs[i] * (Math.PI / 180);
+							let theta = (dirs[i] - 90) * (Math.PI / 180);
 							let dx = len * Math.cos(theta);
 							let dy = len * Math.sin(theta);