ensure that fixed points stay fixed (#1523)

This PR fixes points on resize as well as on create. This should help
with file size for large resizes.

### Change Type
- [x] `patch` — Bug Fix

### Test Plan

- [ ] Unit Tests

packages/editor/src/lib/app/shapeutils/DrawShapeUtil/DrawShapeUtil.tsx

@@ -6,6 +6,7 @@ import {
 	linesIntersect,
 	pointInPolygon,
 	setStrokePointRadii,
+	toFixed,
 	Vec2d,
 	VecLike,
 } from '@tldraw/primitives'
@@ -279,8 +280,8 @@ export class DrawShapeUtil extends ShapeUtil<TLDrawShape> {
 				...segment,
 				points: segment.points.map(({ x, y, z }) => {
 					return {
-						x: scaleX * x,
+						x: toFixed(scaleX * x),
-						y: scaleY * y,
+						y: toFixed(scaleY * y),
 						z,
 					}
 				}),

packages/editor/src/lib/app/tools/DrawShapeTool/children/Drawing.ts

@@ -1,4 +1,4 @@
-import { Matrix2d, snapAngle, Vec2d } from '@tldraw/primitives'
+import { Matrix2d, snapAngle, toFixed, Vec2d } from '@tldraw/primitives'
 import {
 	createShapeId,
 	TLDrawShape,
@@ -607,8 +607,8 @@ export class Drawing extends StateNode {
 						{
 							id: newShapeId,
 							type: this.shapeType,
-							x: currentPagePoint.x,
+							x: toFixed(currentPagePoint.x),
-							y: currentPagePoint.y,
+							y: toFixed(currentPagePoint.y),
 							props: {
 								isPen: this.isPen,
 								segments: [

packages/editor/src/lib/test/tools/__snapshots__/resizing.test.ts.snap

@@ -23,8 +23,8 @@ Object {
             "z": 0.5,
           },
           Object {
-            "x": 110.00000000000001,
+            "x": 110,
-            "y": 110.00000000000001,
+            "y": 110,
             "z": 0.5,
           },
         ],

packages/primitives/api-report.md

@@ -631,6 +631,9 @@ export const TAU: number;
 // @public
 export function toDomPrecision(v: number): number;
 
+// @public (undocumented)
+export function toFixed(v: number): number;
+
 // @public
 export function toPrecision(n: number, precision?: number): number;
 

packages/primitives/src/index.ts

@@ -92,5 +92,6 @@ export {
 	simplify2,
 	snapAngle,
 	toDomPrecision,
+	toFixed,
 	toPrecision,
 } from './lib/utils'

packages/primitives/src/lib/utils.ts

@@ -667,3 +667,10 @@ export function getHeight(pts: VecLike[]) {
 export function toDomPrecision(v: number) {
 	return +v.toFixed(4)
 }
+
+/**
+ * @public
+ */
+export function toFixed(v: number) {
+	return +v.toFixed(2)
+}