1 files changed, 14 insertions, 8 deletions
diff --git a/src/fields/InkField.ts b/src/fields/InkField.ts
index b3e01229a..46704eb2b 100644
--- a/src/fields/InkField.ts
+++ b/src/fields/InkField.ts
@@ -2,6 +2,7 @@ import { Bezier } from 'bezier-js';
 import { alias, createSimpleSchema, list, object, serializable } from 'serializr';
 import { ScriptingGlobals } from '../client/util/ScriptingGlobals';
 import { Deserializable } from '../client/util/SerializationHelper';
+import { PointData } from '../pen-gestures/GestureTypes';
 import { Copy, ToJavascriptString, ToScriptString, ToString } from './FieldSymbols';
 import { ObjectField } from './ObjectField';
 
@@ -16,12 +17,6 @@ export enum InkTool {
     PresentationPin = 'presentationpin',
 }
 
-// Defines a point in an ink as a pair of x- and y-coordinates.
-export interface PointData {
-    X: number;
-    Y: number;
-}
-
 export type Segment = Array<Bezier>;
 
 // Defines an ink as an array of points.
@@ -62,10 +57,10 @@ const strokeDataSchema = createSimpleSchema({
     '*': true,
 });
 
+export const InkDataFieldName = '__inkData';
 @Deserializable('ink')
 export class InkField extends ObjectField {
-    public static InkDataFieldName = '__inkData';
-    @serializable(alias(InkField.InkDataFieldName, list(object(strokeDataSchema))))
+    @serializable(alias(InkDataFieldName, list(object(strokeDataSchema))))
     readonly inkData: InkData;
 
     constructor(data: InkData) {
@@ -94,6 +89,17 @@ export class InkField extends ObjectField {
     [ToString]() {
         return 'InkField';
     }
+
+    public static getBounds(stroke: InkData, pad?: boolean) {
+        const padding = pad ? [-20000, 20000] : [];
+        const xs = [...padding, ...stroke.map(p => p.X)];
+        const ys = [...padding, ...stroke.map(p => p.Y)];
+        const right = Math.max(...xs);
+        const left = Math.min(...xs);
+        const bottom = Math.max(...ys);
+        const top = Math.min(...ys);
+        return { right, left, bottom, top, width: right - left, height: bottom - top };
+    }
 }
 
 ScriptingGlobals.add('InkField', InkField);