Degrees to Radians and Radians to Degrees cleaning.

Author: CatchABus

src/charting/charts/PieChart.ts

@@ -170,10 +170,10 @@ export class PieChart extends PieRadarChartBase<Entry, PieDataSet, PieData> {
         // calculate the text position
         let x =  (r
                 * Math.cos(((rotationAngle + this.mAbsoluteAngles[entryIndex] - offset)
-                * this.mAnimator.getPhaseY()) * (Math.PI / 180)) + center.x);
+                * this.mAnimator.getPhaseY()) * Utils.DEG2RAD) + center.x);
         let y =  (r
                 * Math.sin(((rotationAngle + this.mAbsoluteAngles[entryIndex] - offset)
-                * this.mAnimator.getPhaseY()) * (Math.PI / 180)) + center.y);
+                * this.mAnimator.getPhaseY()) * Utils.DEG2RAD) + center.y);
 
         return [x, y];
     }

src/charting/charts/PieRadarChartBase.ts

@@ -229,7 +229,7 @@ export abstract class PieRadarChartBase<U extends Entry, D extends IDataSet<U>,
         const length = Math.sqrt(tx * tx + ty * ty);
         const radians = Math.acos(ty / length);
 
-        let angle =  radians * (180 / Math.PI);
+        let angle =  radians * Utils.RAD2DEG;
 
         if (x > c.x) {
             angle = 360 - angle;
@@ -257,8 +257,8 @@ export abstract class PieRadarChartBase<U extends Entry, D extends IDataSet<U>,
      */
     public getPosition(center: MPPointF, dist: number, angle: number, outputPoint: MPPointF = {x: 0, y: 0}): MPPointF {
 
-        outputPoint.x =  (center.x + dist * Math.cos(angle * (Math.PI / 180)));
-        outputPoint.y =  (center.y + dist * Math.sin(angle * (Math.PI / 180)));
+        outputPoint.x =  (center.x + dist * Math.cos(angle * Utils.DEG2RAD));
+        outputPoint.y =  (center.y + dist * Math.sin(angle * Utils.DEG2RAD));
         return outputPoint;
     }
 

src/charting/renderer/PieChartRenderer.ts

@@ -884,8 +884,8 @@ export class PieChartRenderer extends DataRenderer {
             // draw only if the value is greater than zero
             if ((Math.abs(e[yKey]) > Utils.NUMBER_EPSILON)) {
 
-                let x =  ((r - circleRadius) * Math.cos(((angle + sliceAngle) * phaseY) * (Math.PI / 180)) + center.x);
-                let y =  ((r - circleRadius) * Math.sin(((angle + sliceAngle) * phaseY) * (Math.PI / 180)) + center.y);
+                let x =  ((r - circleRadius) * Math.cos(((angle + sliceAngle) * phaseY) * Utils.DEG2RAD) + center.x);
+                let y =  ((r - circleRadius) * Math.sin(((angle + sliceAngle) * phaseY) * Utils.DEG2RAD) + center.y);
 
                 this.mRenderPaint.setColor(dataSet.getColor(j));
                 this.mBitmapCanvas.drawCircle(x, y, circleRadius, this.mRenderPaint);

src/charting/utils/Utils.ts

@@ -29,6 +29,7 @@ export namespace Utils {
     // const DOUBLE_EPSILON = Number.EPSILON;
 
     export const DEG2RAD = Math.PI / 180.0;
+    export const RAD2DEG = 180.0 / Math.PI;
     export const NUMBER_EPSILON = Number.EPSILON;
 
     const mDrawTextRectBuffer = new Rect(0, 0, 0, 0);