Add comment regarding cartesianToPolar radian shift

techniq · Feb 21, 2025 · 03496e3 · 03496e3
1 parent a6c1c4a
commit 03496e3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/layerchart/src/lib/utils/math.ts b/packages/layerchart/src/lib/utils/math.ts
@@ -31,7 +31,7 @@ export function polarToCartesian(angle: number, radius: number) {
 export function cartesianToPolar(x: number, y: number) {
   let radians = Math.atan2(y, x);
 
-  radians += Math.PI / 2;
+  radians += Math.PI / 2; // shift 90 degrees to align 0deg at 12 o'clock
 
   // Ensure the result is between 0 and 2π
   if (radians < 0) {