From aa95fe718d05da28756cb83b3304cc37a6d6cc94 Mon Sep 17 00:00:00 2001
From: marina-semeia <mavataneo@semeia.io>
Date: Thu, 24 Sep 2026 11:29:13 +0200
Subject: [PATCH] fix(types): add optional additionalAngle parameter to
 RadialLinearScale.getPointPosition

---
 src/types/index.d.ts                       |  2 +-
 test/types/scales/radial_point_position.ts | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 test/types/scales/radial_point_position.ts

diff --git a/src/types/index.d.ts b/src/types/index.d.ts
index 32831adc88c..f93d1ae1805 100644
--- a/src/types/index.d.ts
+++ b/src/types/index.d.ts
@@ -3681,7 +3681,7 @@ export interface RadialLinearScale<O extends RadialLinearScaleOptions = RadialLi
   getIndexAngle(index: number): number;
   getDistanceFromCenterForValue(value: number): number;
   getValueForDistanceFromCenter(distance: number): number;
-  getPointPosition(index: number, distanceFromCenter: number): { x: number; y: number; angle: number };
+  getPointPosition(index: number, distanceFromCenter: number, additionalAngle?: number): { x: number; y: number; angle: number };
   getPointPositionForValue(index: number, value: number): { x: number; y: number; angle: number };
   getPointLabelPosition(index: number): ChartArea;
   getBasePosition(index: number): { x: number; y: number; angle: number };
diff --git a/test/types/scales/radial_point_position.ts b/test/types/scales/radial_point_position.ts
new file mode 100644
index 00000000000..76959ec16b0
--- /dev/null
+++ b/test/types/scales/radial_point_position.ts
@@ -0,0 +1,19 @@
+import { Chart, RadialLinearScale } from '../../../src/types.js';
+
+const chart = new Chart('test', {
+  type: 'radar',
+  data: {
+    labels: ['a', 'b'],
+    datasets: [{
+      data: [1, 2]
+    }]
+  }
+});
+
+const scale = chart.scales.r as RadialLinearScale;
+
+const position: { x: number; y: number; angle: number } = scale.getPointPosition(0, 100);
+const shiftedPosition: { x: number; y: number; angle: number } = scale.getPointPosition(0, 100, Math.PI / 2);
+
+// @ts-expect-error additionalAngle must be a number
+scale.getPointPosition(0, 100, '1');