restructured currentUserUtils to avoid having import cycles.

1 files changed, 147 insertions, 131 deletions

diff --git a/src/client/views/InkStrokeProperties.ts b/src/client/views/InkStrokeProperties.ts
index 471ad09e9..821e2f739 100644
--- a/src/client/views/InkStrokeProperties.ts
+++ b/src/client/views/InkStrokeProperties.ts
@@ -1,23 +1,23 @@
-import { Bezier } from "bezier-js";
-import { Normalize, Distance } from "../util/bezierFit";
-import { action, observable, reaction } from "mobx";
-import { Doc, NumListCast, Opt } from "../../fields/Doc";
-import { InkData, InkField, InkTool, PointData } from "../../fields/InkField";
-import { List } from "../../fields/List";
-import { listSpec } from "../../fields/Schema";
-import { Cast, NumCast } from "../../fields/Types";
-import { Point } from "../../pen-gestures/ndollar";
-import { DocumentType } from "../documents/DocumentTypes";
-import { FitOneCurve } from "../util/bezierFit";
-import { CurrentUserUtils } from "../util/CurrentUserUtils";
-import { DocumentManager } from "../util/DocumentManager";
-import { undoBatch } from "../util/UndoManager";
-import { InkingStroke } from "./InkingStroke";
-import { DocumentView } from "./nodes/DocumentView";
+import { Bezier } from 'bezier-js';
+import { action, observable, reaction } from 'mobx';
+import { Doc, NumListCast, Opt } from '../../fields/Doc';
+import { InkData, InkField, InkTool, PointData } from '../../fields/InkField';
+import { List } from '../../fields/List';
+import { listSpec } from '../../fields/Schema';
+import { Cast, NumCast } from '../../fields/Types';
+import { Point } from '../../pen-gestures/ndollar';
+import { DocumentType } from '../documents/DocumentTypes';
+import { FitOneCurve } from '../util/bezierFit';
+import { DocumentManager } from '../util/DocumentManager';
+import { undoBatch } from '../util/UndoManager';
+import { InkingStroke } from './InkingStroke';
+import { DocumentView } from './nodes/DocumentView';
 
 export class InkStrokeProperties {
     static _Instance: InkStrokeProperties | undefined;
-    public static get Instance() { return this._Instance || new InkStrokeProperties(); }
+    public static get Instance() {
+        return this._Instance || new InkStrokeProperties();
+    }
 
     @observable _lock = false;
     @observable _controlButton = false;
@@ -25,8 +25,14 @@ export class InkStrokeProperties {
 
     constructor() {
         InkStrokeProperties._Instance = this;
-        reaction(() => this._controlButton, button => button && (CurrentUserUtils.ActiveTool = InkTool.None));
-        reaction(() => CurrentUserUtils.ActiveTool, tool => (tool !== InkTool.None) && (this._controlButton = false));
+        reaction(
+            () => this._controlButton,
+            button => button && (Doc.ActiveTool = InkTool.None)
+        );
+        reaction(
+            () => Doc.ActiveTool,
+            tool => tool !== InkTool.None && (this._controlButton = false)
+        );
     }
 
     /**
@@ -34,35 +40,41 @@ export class InkStrokeProperties {
      * @param func The inputted function.
      * @param requireCurrPoint Indicates whether the current selected point is needed.
      */
-    applyFunction = (strokes: Opt<DocumentView | DocumentView[]>, func: (view: DocumentView, ink: InkData, ptsXscale: number, ptsYscale: number, inkStrokeWidth: number) => { X: number, Y: number }[] | undefined, requireCurrPoint: boolean = false) => {
+    applyFunction = (
+        strokes: Opt<DocumentView | DocumentView[]>,
+        func: (view: DocumentView, ink: InkData, ptsXscale: number, ptsYscale: number, inkStrokeWidth: number) => { X: number; Y: number }[] | undefined,
+        requireCurrPoint: boolean = false
+    ) => {
         var appliedFunc = false;
-        (strokes instanceof DocumentView ? [strokes] : strokes)?.forEach(action(inkView => {
-            if (!requireCurrPoint || this._currentPoint !== -1) {
-                const doc = inkView.rootDoc;
-                if (doc.type === DocumentType.INK && doc.width && doc.height) {
-                    const ink = Cast(doc.data, InkField)?.inkData;
-                    if (ink) {
-                        const oldXrange = (xs => ({ coord: NumCast(doc.x), min: Math.min(...xs), max: Math.max(...xs) }))(ink.map(p => p.X));
-                        const oldYrange = (ys => ({ coord: NumCast(doc.y), min: Math.min(...ys), max: Math.max(...ys) }))(ink.map(p => p.Y));
-                        const ptsXscale = ((NumCast(doc._width) - NumCast(doc.strokeWidth)) / ((oldXrange.max - oldXrange.min) || 1)) || 1;
-                        const ptsYscale = ((NumCast(doc._height) - NumCast(doc.strokeWidth)) / ((oldYrange.max - oldYrange.min) || 1)) || 1;
-                        const newPoints = func(inkView, ink, ptsXscale, ptsYscale, NumCast(doc.strokeWidth));
-                        if (newPoints) {
-                            const newXrange = (xs => ({ min: Math.min(...xs), max: Math.max(...xs) }))(newPoints.map(p => p.X));
-                            const newYrange = (ys => ({ min: Math.min(...ys), max: Math.max(...ys) }))(newPoints.map(p => p.Y));
-                            doc._width = (newXrange.max - newXrange.min) * ptsXscale + NumCast(doc.strokeWidth);
-                            doc._height = (newYrange.max - newYrange.min) * ptsYscale + NumCast(doc.strokeWidth);
-                            doc.x = (oldXrange.coord + (newXrange.min - oldXrange.min) * ptsXscale);
-                            doc.y = (oldYrange.coord + (newYrange.min - oldYrange.min) * ptsYscale);
-                            Doc.GetProto(doc).data = new InkField(newPoints);
-                            appliedFunc = true;
+        (strokes instanceof DocumentView ? [strokes] : strokes)?.forEach(
+            action(inkView => {
+                if (!requireCurrPoint || this._currentPoint !== -1) {
+                    const doc = inkView.rootDoc;
+                    if (doc.type === DocumentType.INK && doc.width && doc.height) {
+                        const ink = Cast(doc.data, InkField)?.inkData;
+                        if (ink) {
+                            const oldXrange = (xs => ({ coord: NumCast(doc.x), min: Math.min(...xs), max: Math.max(...xs) }))(ink.map(p => p.X));
+                            const oldYrange = (ys => ({ coord: NumCast(doc.y), min: Math.min(...ys), max: Math.max(...ys) }))(ink.map(p => p.Y));
+                            const ptsXscale = (NumCast(doc._width) - NumCast(doc.strokeWidth)) / (oldXrange.max - oldXrange.min || 1) || 1;
+                            const ptsYscale = (NumCast(doc._height) - NumCast(doc.strokeWidth)) / (oldYrange.max - oldYrange.min || 1) || 1;
+                            const newPoints = func(inkView, ink, ptsXscale, ptsYscale, NumCast(doc.strokeWidth));
+                            if (newPoints) {
+                                const newXrange = (xs => ({ min: Math.min(...xs), max: Math.max(...xs) }))(newPoints.map(p => p.X));
+                                const newYrange = (ys => ({ min: Math.min(...ys), max: Math.max(...ys) }))(newPoints.map(p => p.Y));
+                                doc._width = (newXrange.max - newXrange.min) * ptsXscale + NumCast(doc.strokeWidth);
+                                doc._height = (newYrange.max - newYrange.min) * ptsYscale + NumCast(doc.strokeWidth);
+                                doc.x = oldXrange.coord + (newXrange.min - oldXrange.min) * ptsXscale;
+                                doc.y = oldYrange.coord + (newYrange.min - oldYrange.min) * ptsYscale;
+                                Doc.GetProto(doc).data = new InkField(newPoints);
+                                appliedFunc = true;
+                            }
                         }
                     }
                 }
-            }
-        }));
+            })
+        );
         return appliedFunc;
-    }
+    };
 
     /**
      * Adds a new control point to the ink instance when editing its format.
@@ -72,7 +84,7 @@ export class InkStrokeProperties {
      */
     @undoBatch
     @action
-    addPoints = (inkView: DocumentView, t: number, i: number, controls: { X: number, Y: number }[]) => {
+    addPoints = (inkView: DocumentView, t: number, i: number, controls: { X: number; Y: number }[]) => {
         this.applyFunction(inkView, (view: DocumentView, ink: InkData) => {
             const doc = view.rootDoc;
             const array = [controls[i], controls[i + 1], controls[i + 2], controls[i + 3]];
@@ -81,12 +93,12 @@ export class InkStrokeProperties {
             controls.splice(i, 4, ...splicepts.map(p => ({ X: p.x, Y: p.y })));
 
             // Updating the indices of the control points whose handle tangency has been broken.
-            doc.brokenInkIndices = new List(Cast(doc.brokenInkIndices, listSpec("number"), []).map(control => control > i ? control + 4 : control));
+            doc.brokenInkIndices = new List(Cast(doc.brokenInkIndices, listSpec('number'), []).map(control => (control > i ? control + 4 : control)));
             this._currentPoint = -1;
 
             return controls;
         });
-    }
+    };
 
     /**
      * Scales a handle point of a control point that is adjacent to a newly added one.
@@ -107,15 +119,15 @@ export class InkStrokeProperties {
      * the tangent vector to a control point is equivalent to the first/last (depending on the direction
      * of the curve) leg of the Bézier curve's derivative.
      * (Source: https://pages.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/Bezier/bezier-der.html)
-     * 
+     *
      * @param C The curve represented by all points from the previous control until the newly added point.
      * @param D The curve represented by all points from the newly added point to the next control.
      * @param newControl The newly added control point.
      */
     getNewHandlePoints = (C: PointData[], D: PointData[], newControl: PointData) => {
         const [m, n] = [C.length, D.length];
-        let handleSizeA = Math.sqrt((Math.pow(newControl.X - C[0].X, 2)) + (Math.pow(newControl.Y - C[0].Y, 2)));
-        let handleSizeB = Math.sqrt((Math.pow(D[n - 1].X - newControl.X, 2)) + (Math.pow(D[n - 1].Y - newControl.Y, 2)));
+        let handleSizeA = Math.sqrt(Math.pow(newControl.X - C[0].X, 2) + Math.pow(newControl.Y - C[0].Y, 2));
+        let handleSizeB = Math.sqrt(Math.pow(D[n - 1].X - newControl.X, 2) + Math.pow(D[n - 1].Y - newControl.Y, 2));
         // Scaling adjustments to improve the ratio between the magnitudes of the two handle lines.
         // (Ensures that the new point added doesn't augment the inital shape of the curve much).
         if (handleSizeA < 75 && handleSizeB < 75) {
@@ -131,50 +143,55 @@ export class InkStrokeProperties {
         }
         // Finding the last leg of the derivative curve of C.
         const dC = { X: (handleSizeA / n) * (C[m - 1].X - C[m - 2].X), Y: (handleSizeA / n) * (C[m - 1].Y - C[m - 2].Y) };
-        // Finding the first leg of the derivative curve of D. 
+        // Finding the first leg of the derivative curve of D.
         const dD = { X: (handleSizeB / m) * (D[1].X - D[0].X), Y: (handleSizeB / m) * (D[1].Y - D[0].Y) };
         const handleA = { X: newControl.X - dC.X, Y: newControl.Y - dC.Y };
         const handleB = { X: newControl.X + dD.X, Y: newControl.Y + dD.Y };
         return [handleA, handleB];
-    }
+    };
 
     /**
      * Deletes the current control point of the selected ink instance.
      */
     @undoBatch
     @action
-    deletePoints = (inkView: DocumentView, preserve: boolean) => this.applyFunction(inkView, (view: DocumentView, ink: InkData) => {
-        const doc = view.rootDoc;
-        const newPoints = ink.slice();
-        const brokenIndices = NumListCast(doc.brokenInkIndices);
-        if (preserve || this._currentPoint === 0 || this._currentPoint === ink.length - 1 || brokenIndices.includes(this._currentPoint)) {
-            newPoints.splice(this._currentPoint === 0 ? 0 : this._currentPoint === ink.length - 1 ? this._currentPoint - 3 : this._currentPoint - 2, 4);
-        } else {
-            const start = this._currentPoint === 0 ? 0 : this._currentPoint - 4;
-            const splicedPoints = ink.slice(start, start + (this._currentPoint === 0 || this._currentPoint === ink.length - 1 ? 4 : 8));
-            const samples: Point[] = [];
-            var startDir = { x: 0, y: 0 };
-            var endDir = { x: 0, y: 0 };
-            for (var i = 0; i < splicedPoints.length / 4; i++) {
-                const bez = new Bezier(splicedPoints.slice(i * 4, i * 4 + 4).map(p => ({ x: p.X, y: p.Y })));
-                if (i === 0) startDir = bez.derivative(0);
-                if (i === splicedPoints.length / 4 - 1) endDir = bez.derivative(1);
-                for (var t = 0; t < (i === splicedPoints.length / 4 - 1 ? 1 + 1e-7 : 1); t += 0.05) {
-                    const pt = bez.compute(t);
-                    samples.push(new Point(pt.x, pt.y));
+    deletePoints = (inkView: DocumentView, preserve: boolean) =>
+        this.applyFunction(
+            inkView,
+            (view: DocumentView, ink: InkData) => {
+                const doc = view.rootDoc;
+                const newPoints = ink.slice();
+                const brokenIndices = NumListCast(doc.brokenInkIndices);
+                if (preserve || this._currentPoint === 0 || this._currentPoint === ink.length - 1 || brokenIndices.includes(this._currentPoint)) {
+                    newPoints.splice(this._currentPoint === 0 ? 0 : this._currentPoint === ink.length - 1 ? this._currentPoint - 3 : this._currentPoint - 2, 4);
+                } else {
+                    const start = this._currentPoint === 0 ? 0 : this._currentPoint - 4;
+                    const splicedPoints = ink.slice(start, start + (this._currentPoint === 0 || this._currentPoint === ink.length - 1 ? 4 : 8));
+                    const samples: Point[] = [];
+                    var startDir = { x: 0, y: 0 };
+                    var endDir = { x: 0, y: 0 };
+                    for (var i = 0; i < splicedPoints.length / 4; i++) {
+                        const bez = new Bezier(splicedPoints.slice(i * 4, i * 4 + 4).map(p => ({ x: p.X, y: p.Y })));
+                        if (i === 0) startDir = bez.derivative(0);
+                        if (i === splicedPoints.length / 4 - 1) endDir = bez.derivative(1);
+                        for (var t = 0; t < (i === splicedPoints.length / 4 - 1 ? 1 + 1e-7 : 1); t += 0.05) {
+                            const pt = bez.compute(t);
+                            samples.push(new Point(pt.x, pt.y));
+                        }
+                    }
+                    const { finalCtrls, error } = FitOneCurve(samples, { X: startDir.x, Y: startDir.y }, { X: endDir.x, Y: endDir.y });
+                    if (error < 100) {
+                        newPoints.splice(this._currentPoint - 4, 8, ...finalCtrls);
+                    } else {
+                        newPoints.splice(this._currentPoint - 2, 4);
+                    }
                 }
-            }
-            const { finalCtrls, error } = FitOneCurve(samples, { X: startDir.x, Y: startDir.y }, { X: endDir.x, Y: endDir.y });
-            if (error < 100) {
-                newPoints.splice(this._currentPoint - 4, 8, ...finalCtrls);
-            } else {
-                newPoints.splice(this._currentPoint - 2, 4);
-            }
-        }
-        doc.brokenInkIndices = new List(brokenIndices.map(control => control >= this._currentPoint ? control - 4 : control));
-        this._currentPoint = -1;
-        return newPoints.length < 4 ? undefined : newPoints;
-    }, true)
+                doc.brokenInkIndices = new List(brokenIndices.map(control => (control >= this._currentPoint ? control - 4 : control)));
+                this._currentPoint = -1;
+                return newPoints.length < 4 ? undefined : newPoints;
+            },
+            true
+        );
 
     /**
      * Rotates ink stroke(s) about a point
@@ -188,15 +205,16 @@ export class InkStrokeProperties {
         this.applyFunction(inkStrokes, (view: DocumentView, ink: InkData, xScale: number, yScale: number, inkStrokeWidth: number) => {
             view.rootDoc.rotation = NumCast(view.rootDoc.rotation) + angle;
             const inkCenterPt = view.ComponentView?.ptFromScreen?.(scrpt);
-            return !inkCenterPt ? ink :
-                ink.map(i => {
-                    const pt = { X: i.X - inkCenterPt.X, Y: i.Y - inkCenterPt.Y };
-                    const newX = Math.cos(angle) * pt.X - Math.sin(angle) * pt.Y * yScale / xScale;
-                    const newY = Math.sin(angle) * pt.X * xScale / yScale + Math.cos(angle) * pt.Y;
-                    return { X: newX + inkCenterPt.X, Y: newY + inkCenterPt.Y };
-                });
+            return !inkCenterPt
+                ? ink
+                : ink.map(i => {
+                      const pt = { X: i.X - inkCenterPt.X, Y: i.Y - inkCenterPt.Y };
+                      const newX = Math.cos(angle) * pt.X - (Math.sin(angle) * pt.Y * yScale) / xScale;
+                      const newY = (Math.sin(angle) * pt.X * xScale) / yScale + Math.cos(angle) * pt.Y;
+                      return { X: newX + inkCenterPt.X, Y: newY + inkCenterPt.Y };
+                  });
         });
-    }
+    };
 
     /**
      * Rotates ink stroke(s) about a point
@@ -210,16 +228,17 @@ export class InkStrokeProperties {
         this.applyFunction(inkStrokes, (view: DocumentView, ink: InkData) => {
             const ptFromScreen = view.ComponentView?.ptFromScreen;
             const ptToScreen = view.ComponentView?.ptToScreen;
-            return !ptToScreen || !ptFromScreen ? ink :
-                ink.map(ptToScreen).map(i => {
-                    const pvec = { X: i.X - scrpt.X, Y: i.Y - scrpt.Y };
-                    const svec = pvec.X * scrVec.X * scaling + pvec.Y * scrVec.Y * scaling;
-                    const ovec = -pvec.X * scrVec.Y * (scaleUniformly ? scaling : 1) + pvec.Y * scrVec.X * (scaleUniformly ? scaling : 1);
-                    const newscrpt = { X: scrpt.X + svec * scrVec.X - ovec * scrVec.Y, Y: scrpt.Y + svec * scrVec.Y + ovec * scrVec.X };
-                    return ptFromScreen(newscrpt);
-                });
+            return !ptToScreen || !ptFromScreen
+                ? ink
+                : ink.map(ptToScreen).map(i => {
+                      const pvec = { X: i.X - scrpt.X, Y: i.Y - scrpt.Y };
+                      const svec = pvec.X * scrVec.X * scaling + pvec.Y * scrVec.Y * scaling;
+                      const ovec = -pvec.X * scrVec.Y * (scaleUniformly ? scaling : 1) + pvec.Y * scrVec.X * (scaleUniformly ? scaling : 1);
+                      const newscrpt = { X: scrpt.X + svec * scrVec.X - ovec * scrVec.Y, Y: scrpt.Y + svec * scrVec.Y + ovec * scrVec.X };
+                      return ptFromScreen(newscrpt);
+                  });
         });
-    }
+    };
 
     /**
      * Handles the movement/scaling of a control point.
@@ -230,7 +249,7 @@ export class InkStrokeProperties {
         this.applyFunction(inkView, (view: DocumentView, ink: InkData) => {
             const order = controlIndex % 4;
             const closed = InkingStroke.IsClosed(ink);
-            const brokenIndices = Cast(inkView.props.Document.brokenInkIndices, listSpec("number"), []);
+            const brokenIndices = Cast(inkView.props.Document.brokenInkIndices, listSpec('number'), []);
             if (origInk && this._currentPoint > 0 && this._currentPoint < ink.length - 1 && brokenIndices.findIndex(value => value === controlIndex) === -1) {
                 const cpt_before = ink[controlIndex];
                 const cpt = { X: cpt_before.X + deltaX, Y: cpt_before.Y + deltaY };
@@ -238,7 +257,7 @@ export class InkStrokeProperties {
                 const start = this._currentPoint === 0 ? 0 : this._currentPoint - 4;
                 const splicedPoints = origInk.slice(start, start + (this._currentPoint === 0 || this._currentPoint === ink.length - 1 ? 4 : 8));
                 const { nearestT, nearestSeg } = InkStrokeProperties.nearestPtToStroke(splicedPoints, cpt);
-                if ((nearestSeg === 0 && nearestT < 1e-1) || (nearestSeg === 4 && (1 - nearestT) < 1e-1)) return ink.slice();
+                if ((nearestSeg === 0 && nearestT < 1e-1) || (nearestSeg === 4 && 1 - nearestT < 1e-1)) return ink.slice();
                 const samplesLeft: Point[] = [];
                 const samplesRight: Point[] = [];
                 var startDir = { x: 0, y: 0 };
@@ -247,7 +266,7 @@ export class InkStrokeProperties {
                     const bez = new Bezier(splicedPoints.slice(i * 4, i * 4 + 4).map(p => ({ x: p.X, y: p.Y })));
                     if (i === 0) startDir = bez.derivative(0);
                     if (i === nearestSeg / 4) endDir = bez.derivative(nearestT);
-                    for (var t = 0; t < (i === nearestSeg / 4 ? nearestT + .05 : 1); t += 0.05) {
+                    for (var t = 0; t < (i === nearestSeg / 4 ? nearestT + 0.05 : 1); t += 0.05) {
                         const pt = bez.compute(i !== nearestSeg / 4 ? t : Math.min(nearestT, t));
                         samplesLeft.push(new Point(pt.x, pt.y));
                     }
@@ -257,7 +276,7 @@ export class InkStrokeProperties {
                     const bez = new Bezier(splicedPoints.slice(i * 4, i * 4 + 4).map(p => ({ x: p.X, y: p.Y })));
                     if (i === nearestSeg / 4) startDir = bez.derivative(nearestT);
                     if (i === splicedPoints.length / 4 - 1) endDir = bez.derivative(1);
-                    for (var t = i === nearestSeg / 4 ? nearestT : 0; t < (i === nearestSeg / 4 ? 1 + .05 + 1e-7 : 1 + 1e-7); t += 0.05) {
+                    for (var t = i === nearestSeg / 4 ? nearestT : 0; t < (i === nearestSeg / 4 ? 1 + 0.05 + 1e-7 : 1 + 1e-7); t += 0.05) {
                         const pt = bez.compute(Math.min(1, t));
                         samplesRight.push(new Point(pt.x, pt.y));
                     }
@@ -271,12 +290,11 @@ export class InkStrokeProperties {
             return ink.map((pt, i) => {
                 const leftHandlePoint = order === 0 && i === controlIndex + 1;
                 const rightHandlePoint = order === 0 && controlIndex !== 0 && i === controlIndex - 2;
-                if (controlIndex === i ||
-                    (order === 0 && controlIndex !== 0 && i === controlIndex - 1) ||
-                    (order === 3 && i === controlIndex - 1)) {
-                    return ({ X: pt.X + deltaX, Y: pt.Y + deltaY });
+                if (controlIndex === i || (order === 0 && controlIndex !== 0 && i === controlIndex - 1) || (order === 3 && i === controlIndex - 1)) {
+                    return { X: pt.X + deltaX, Y: pt.Y + deltaY };
                 }
-                if (controlIndex === i ||
+                if (
+                    controlIndex === i ||
                     leftHandlePoint ||
                     rightHandlePoint ||
                     (order === 0 && controlIndex !== 0 && i === controlIndex - 1) ||
@@ -284,15 +302,15 @@ export class InkStrokeProperties {
                     (order === 3 && i === controlIndex - 1) ||
                     (order === 3 && controlIndex !== ink.length - 1 && i === controlIndex + 1) ||
                     (order === 3 && controlIndex !== ink.length - 1 && i === controlIndex + 2) ||
-                    ((ink[0].X === ink[ink.length - 1].X) && (ink[0].Y === ink[ink.length - 1].Y) && (i === 0 || i === ink.length - 1) && (controlIndex === 0 || controlIndex === ink.length - 1))) {
-                    return ({ X: pt.X + deltaX, Y: pt.Y + deltaY });
+                    (ink[0].X === ink[ink.length - 1].X && ink[0].Y === ink[ink.length - 1].Y && (i === 0 || i === ink.length - 1) && (controlIndex === 0 || controlIndex === ink.length - 1))
+                ) {
+                    return { X: pt.X + deltaX, Y: pt.Y + deltaY };
                 }
                 return pt;
             });
-        })
-
+        });
 
-    public static nearestPtToStroke(ctrlPoints: { X: number, Y: number }[], refInkSpacePt: { X: number, Y: number }, excludeSegs?: number[]) {
+    public static nearestPtToStroke(ctrlPoints: { X: number; Y: number }[], refInkSpacePt: { X: number; Y: number }, excludeSegs?: number[]) {
         var distance = Number.MAX_SAFE_INTEGER;
         var nearestT = -1;
         var nearestSeg = -1;
@@ -326,16 +344,16 @@ export class InkStrokeProperties {
             if (screenDragPt) {
                 const snapData = this.snapToAllCurves(screenDragPt, inkView, { nearestPt: { X: 0, Y: 0 }, distance: 10 }, ink, controlIndex);
                 if (snapData.distance < 10) {
-                    const deltaX = (snapData.nearestPt.X - ink[controlIndex].X);
-                    const deltaY = (snapData.nearestPt.Y - ink[controlIndex].Y);
+                    const deltaX = snapData.nearestPt.X - ink[controlIndex].X;
+                    const deltaY = snapData.nearestPt.Y - ink[controlIndex].Y;
                     const res = this.moveControlPtHandle(inkView, deltaX, deltaY, controlIndex, ink.slice());
-                    console.log("X = " + snapData.nearestPt.X + " " + snapData.nearestPt.Y);
+                    console.log('X = ' + snapData.nearestPt.X + ' ' + snapData.nearestPt.Y);
                     return res;
                 }
             }
         }
         return false;
-    }
+    };
 
     excludeSelfSnapSegs = (ink: InkData, controlIndex: number) => {
         const closed = InkingStroke.IsClosed(ink);
@@ -346,9 +364,9 @@ export class InkStrokeProperties {
         const nextseg = which > 1 && (closed || controlIndex < ink.length - 1) ? (thisseg + 4) % ink.length : -1;
         const prevseg = which < 2 && (closed || controlIndex > 0) ? (thisseg - 4 + ink.length) % ink.length : -1;
         return [thisseg, prevseg, nextseg];
-    }
+    };
 
-    snapToAllCurves = (screenDragPt: { X: number, Y: number }, inkView: DocumentView, snapData: { nearestPt: { X: number, Y: number }, distance: number }, ink: InkData, controlIndex: number) => {
+    snapToAllCurves = (screenDragPt: { X: number; Y: number }, inkView: DocumentView, snapData: { nearestPt: { X: number; Y: number }; distance: number }, ink: InkData, controlIndex: number) => {
         const containingCollection = inkView.props.CollectionFreeFormDocumentView?.().props.CollectionFreeFormView;
         containingCollection?.childDocs
             .filter(doc => doc.type === DocumentType.INK)
@@ -356,8 +374,7 @@ export class InkStrokeProperties {
                 const testInkView = DocumentManager.Instance.getDocumentView(doc, containingCollection?.props.CollectionView);
                 const snapped = testInkView?.ComponentView?.snapPt?.(screenDragPt, doc === inkView.rootDoc ? this.excludeSelfSnapSegs(ink, controlIndex) : []);
                 if (snapped && snapped.distance < snapData.distance) {
-                    const snappedInkPt = doc === inkView.rootDoc ? snapped.nearestPt :
-                        inkView.ComponentView?.ptFromScreen?.(testInkView?.ComponentView?.ptToScreen?.(snapped.nearestPt) ?? { X: 0, Y: 0 });  // convert from snapped ink coordinate system to dragged ink coordinate system by converting to/from screen space
+                    const snappedInkPt = doc === inkView.rootDoc ? snapped.nearestPt : inkView.ComponentView?.ptFromScreen?.(testInkView?.ComponentView?.ptToScreen?.(snapped.nearestPt) ?? { X: 0, Y: 0 }); // convert from snapped ink coordinate system to dragged ink coordinate system by converting to/from screen space
 
                     if (snappedInkPt) {
                         snapData = { nearestPt: snappedInkPt, distance: snapped.distance };
@@ -365,7 +382,7 @@ export class InkStrokeProperties {
                 }
             });
         return snapData;
-    }
+    };
 
     /**
      * Snaps a control point with broken tangency back to synced rotation.
@@ -375,7 +392,7 @@ export class InkStrokeProperties {
     snapHandleTangent = (inkView: DocumentView, controlIndex: number, handleIndexA: number, handleIndexB: number) => {
         this.applyFunction(inkView, (view: DocumentView, ink: InkData) => {
             const doc = view.rootDoc;
-            const brokenIndices = Cast(doc.brokenInkIndices, listSpec("number"), []);
+            const brokenIndices = Cast(doc.brokenInkIndices, listSpec('number'), []);
             const ind = brokenIndices.findIndex(value => value === controlIndex);
             if (ind !== -1) {
                 brokenIndices.splice(ind, 1);
@@ -387,7 +404,7 @@ export class InkStrokeProperties {
                 return inkCopy;
             }
         });
-    }
+    };
 
     /**
      * Rotates the target point about the origin point for a given angle (radians).
@@ -398,11 +415,11 @@ export class InkStrokeProperties {
         const newX = Math.cos(angle) * rotatedTarget.X - Math.sin(angle) * rotatedTarget.Y;
         const newY = Math.sin(angle) * rotatedTarget.X + Math.cos(angle) * rotatedTarget.Y;
         return { X: newX + origin.X, Y: newY + origin.Y };
-    }
+    };
 
     /**
      * Finds the angle (in radians) between two inputted vectors.
-     * 
+     *
      * α = arccos(a·b / |a|·|b|), where a and b are both vectors.
      */
     public static angleBetweenTwoVectors(vectorA: PointData, vectorB: PointData) {
@@ -444,14 +461,13 @@ export class InkStrokeProperties {
             const newHandlePoint = { X: ink[handleIndex].X - deltaX, Y: ink[handleIndex].Y - deltaY };
             const inkCopy = ink.slice();
             inkCopy[handleIndex] = newHandlePoint;
-            const brokenIndices = Cast(doc.brokenInkIndices, listSpec("number"));
+            const brokenIndices = Cast(doc.brokenInkIndices, listSpec('number'));
             const equivIndex = closed ? (controlIndex === 0 ? ink.length - 1 : controlIndex === ink.length - 1 ? 0 : -1) : -1;
             // Rotate opposite handle if user hasn't held 'Alt' key or not first/final control (which have only 1 handle).
-            if ((!brokenIndices || (!brokenIndices?.includes(controlIndex) && !brokenIndices?.includes(equivIndex))) &&
-                (closed || (handleIndex !== 1 && handleIndex !== ink.length - 2))) {
+            if ((!brokenIndices || (!brokenIndices?.includes(controlIndex) && !brokenIndices?.includes(equivIndex))) && (closed || (handleIndex !== 1 && handleIndex !== ink.length - 2))) {
                 const angle = InkStrokeProperties.angleChange(oldHandlePoint, newHandlePoint, controlPoint);
                 inkCopy[oppositeHandleIndex] = this.rotatePoint(oppositeHandlePoint, controlPoint, angle);
             }
             return inkCopy;
-        })
-}
\ No newline at end of file
+        });
+}