improves appearance on safari

components/canvas/bounds/bounding-box.tsx

   if (!bounds) return null
   if (!isSelecting) return null
 
-  const size = (isMobile().any ? 16 : 8) / zoom // Touch target size
+  const size = (isMobile().any ? 12 : 8) / zoom // Touch target size
 
   return (
     <g

components/canvas/defs.tsx

+import { getShapeUtils } from "lib/shape-utils"
+import { useSelector } from "state"
+import { deepCompareArrays, getPage } from "utils/utils"
+
+export default function Defs() {
+  const currentPageShapeIds = useSelector(({ data }) => {
+    return Object.values(getPage(data).shapes)
+      .sort((a, b) => a.childIndex - b.childIndex)
+      .map((shape) => shape.id)
+  }, deepCompareArrays)
+
+  return (
+    <defs>
+      {currentPageShapeIds.map((id) => (
+        <Def key={id} id={id} />
+      ))}
+    </defs>
+  )
+}
+
+export function Def({ id }: { id: string }) {
+  const shape = useSelector(({ data }) => getPage(data).shapes[id])
+
+  return getShapeUtils(shape).render(shape)
+}

components/canvas/shape.tsx

 import { getPage } from "utils/utils"
 
 function Shape({ id }: { id: string }) {
-  const rGroup = useRef<SVGGElement>(null)
-
   const isHovered = useSelector((state) => state.data.hoveredId === id)
 
   const isSelected = useSelector((state) => state.values.selectedIds.has(id))
 
   const shape = useSelector(({ data }) => getPage(data).shapes[id])
 
+  const rGroup = useRef<SVGGElement>(null)
+
   const handlePointerDown = useCallback(
     (e: React.PointerEvent) => {
       e.stopPropagation()
       onPointerMove={handlePointerMove}
     >
       <defs>{getShapeUtils(shape).render(shape)}</defs>
-      <HoverIndicator as="use" xlinkHref={"#" + id} />
-      <MainShape as="use" xlinkHref={"#" + id} {...shape.style} />
-      <Indicator as="use" xlinkHref={"#" + id} />
+      <HoverIndicator as="use" href={"#" + id} />
+      <MainShape as="use" href={"#" + id} {...shape.style} />
+      <Indicator as="use" href={"#" + id} />
     </StyledGroup>
   )
 }

hooks/useZoomEvents.ts

 import state from "state"
 import inputs from "state/inputs"
 import * as vec from "utils/vec"
+import { usePinch } from "react-use-gesture"
 
 /**
  * Capture zoom gestures (pinches, wheels and pans) and send to the state.
     }
   }, [ref])
 
-  return {}
+  const rPinchDa = useRef<number[] | undefined>(undefined)
+  const rPinchAngle = useRef<number>(undefined)
+  const rPinchPoint = useRef<number[] | undefined>(undefined)
+
+  const bind = usePinch(({ pinching, da, origin }) => {
+    if (!pinching) {
+      state.send("STOPPED_PINCHING")
+      rPinchDa.current = undefined
+      rPinchPoint.current = undefined
+      return
+    }
+
+    if (rPinchPoint.current === undefined) {
+      state.send("STARTED_PINCHING")
+      rPinchDa.current = da
+      rPinchPoint.current = origin
+    }
+
+    const [distanceDelta, angleDelta] = vec.sub(rPinchDa.current, da)
+
+    state.send("PINCHED", {
+      delta: vec.sub(rPinchPoint.current, origin),
+      point: origin,
+      distanceDelta,
+      angleDelta,
+    })
+
+    rPinchDa.current = da
+    rPinchPoint.current = origin
+  })
+
+  return { ...bind() }
 }

package.json

     "react": "17.0.2",
     "react-dom": "17.0.2",
     "react-feather": "^2.0.9",
+    "react-use-gesture": "^9.1.3",
     "uuid": "^8.3.2"
   },
   "devDependencies": {

state/state.ts

             STRETCHED: "stretchSelection",
             DISTRIBUTED: "distributeSelection",
             MOVED: "moveSelection",
+            STARTED_PINCHING: { to: "pinching" },
           },
           initial: "notPointing",
           states: {
             },
           },
         },
+        pinching: {
+          on: {
+            STOPPED_PINCHING: { to: "selecting" },
+            PINCHED: { do: "pinchCamera" },
+          },
+        },
         draw: {
           initial: "creating",
           states: {
 
       setZoomCSS(camera.zoom)
     },
-    panCamera(data, payload: { delta: number[]; point: number[] }) {
+    panCamera(data, payload: { delta: number[] }) {
       const { camera } = data
-      data.camera.point = vec.sub(
-        camera.point,
-        vec.div(payload.delta, camera.zoom)
-      )
+      camera.point = vec.sub(camera.point, vec.div(payload.delta, camera.zoom))
+    },
+    pinchCamera(
+      data,
+      payload: {
+        delta: number[]
+        distanceDelta: number
+        angleDelta: number
+        point: number[]
+      }
+    ) {
+      const { camera } = data
+
+      camera.point = vec.sub(camera.point, vec.div(payload.delta, camera.zoom))
+
+      const next = camera.zoom - (payload.distanceDelta / 300) * camera.zoom
+
+      const p0 = screenToWorld(payload.point, data)
+      camera.zoom = clamp(next, 0.1, 3)
+      const p1 = screenToWorld(payload.point, data)
+      camera.point = vec.add(camera.point, vec.sub(p1, p0))
+
+      setZoomCSS(camera.zoom)
     },
     deleteSelectedIds(data) {
       commands.deleteSelected(data)

styles/stitches.config.ts

     zStrokeWidth: () => (value: number | number[]) => {
       if (Array.isArray(value)) {
         return {
-          strokeWidth: `calc(${value[0]} / var(--camera-zoom))`,
+          strokeWidth: `calc(${value[0]}px / var(--camera-zoom))`,
         }
       }
 
       // }
 
       return {
-        strokeWidth: `calc(${value} / var(--camera-zoom))`,
+        strokeWidth: `calc(${value}px / var(--camera-zoom))`,
       }
     },
   },

yarn.lock

     invariant "^2.2.4"
     tslib "^1.0.0"
 
+react-use-gesture@^9.1.3:
+  version "9.1.3"
+  resolved "https://registry.yarnpkg.com/react-use-gesture/-/react-use-gesture-9.1.3.tgz#92bd143e4f58e69bd424514a5bfccba2a1d62ec0"
+  integrity sha512-CdqA2SmS/fj3kkS2W8ZU8wjTbVBAIwDWaRprX7OKaj7HlGwBasGEFggmk5qNklknqk9zK/h8D355bEJFTpqEMg==
+
 react@17.0.2:
   version "17.0.2"
   resolved "https://registry.yarnpkg.com/react/-/react-17.0.2.tgz#d0b5cc516d29eb3eee383f75b62864cfb6800037"