Grid axis should be able to be selected for angles (#99)

2023-04-03 20:40:58 +10:00
parent a8b68bab6a
commit 8df08be687
4 changed files with 138 additions and 20 deletions
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@ -20,6 +20,10 @@ export function getLength(a: [number, number], b: [number, number]): number {
 export function getAngle(a: [number, number], b: [number, number]): number {
  const x = b[0] - a[0]
  const y = b[1] - a[1]
-  const result = ((Math.atan2(y, x) * 180) / Math.PI + 360) % 360
+  return normaliseAngle((Math.atan2(y, x) * 180) / Math.PI)
+}
+
+export function normaliseAngle(angle: number): number {
+  const result = ((angle % 360) + 360) % 360
  return result > 180 ? result - 360 : result
 }