From d418be9f731513a92d8f5106b5c403e94ec87f7d Mon Sep 17 00:00:00 2001
From: Jukka Kurkela <jukka.kurkela@gmail.com>
Date: Thu, 25 Feb 2021 00:57:17 +0200
Subject: [PATCH] Remove unused getRingIndex from Doughnut

---
 docs/docs/getting-started/v3-migration.md |  1 +
 src/controllers/controller.doughnut.js    | 13 -------------
 types/index.esm.d.ts                      |  1 -
 3 files changed, 1 insertion(+), 14 deletions(-)

diff --git a/docs/docs/getting-started/v3-migration.md b/docs/docs/getting-started/v3-migration.md
index 6b9137911cf..2cd03da0a8d 100644
--- a/docs/docs/getting-started/v3-migration.md
+++ b/docs/docs/getting-started/v3-migration.md
@@ -303,6 +303,7 @@ The following properties and methods were removed:
 * `DatasetController.addElementAndReset`
 * `DatasetController.createMetaData`
 * `DatasetController.createMetaDataset`
+* `DoughnutController.getRingIndex`
 
 #### Removed from Elements
 
diff --git a/src/controllers/controller.doughnut.js b/src/controllers/controller.doughnut.js
index d2b75f32a97..6c575315390 100644
--- a/src/controllers/controller.doughnut.js
+++ b/src/controllers/controller.doughnut.js
@@ -60,19 +60,6 @@ export default class DoughnutController extends DatasetController {
     }
   }
 
-  // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
-  getRingIndex(datasetIndex) {
-    let ringIndex = 0;
-
-    for (let j = 0; j < datasetIndex; ++j) {
-      if (this.chart.isDatasetVisible(j)) {
-        ++ringIndex;
-      }
-    }
-
-    return ringIndex;
-  }
-
   /**
 	 * @private
 	 */
diff --git a/types/index.esm.d.ts b/types/index.esm.d.ts
index 5231d1f34dd..93f8979f6e8 100644
--- a/types/index.esm.d.ts
+++ b/types/index.esm.d.ts
@@ -314,7 +314,6 @@ export interface DoughnutController extends DatasetController {
 	readonly offsetX: number;
 	readonly offsetY: number;
 
-	getRingIndex(datasetIndex: number): number;
 	calculateTotal(): number;
 	calculateCircumference(value: number): number;
 }