Improves handles for arrows

components/canvas/bounds/handles.tsx

@@ -5,7 +5,6 @@ import { useSelector } from 'state'
 import styled from 'styles'
 import { deepCompareArrays, getPage } from 'utils/utils'
 import * as vec from 'utils/vec'
-import { DotCircle } from '../misc'
 
 export default function Handles() {
   const selectedIds = useSelector(
@@ -18,7 +17,9 @@ export default function Handles() {
       selectedIds.length === 1 && getPage(data).shapes[selectedIds[0]]
   )
 
-  const isSelecting = useSelector((s) => s.isIn('selecting.notPointing'))
+  const isSelecting = useSelector((s) =>
+    s.isInAny('notPointing', 'pinching', 'translatingHandles')
+  )
 
   if (!shape.handles || !isSelecting) return null
 
@@ -49,29 +50,43 @@ function Handle({
   const events = useHandleEvents(id, rGroup)
 
   return (
-    <g
+    <StyledGroup
       key={id}
+      className="handles"
       ref={rGroup}
       {...events}
-      cursor="pointer"
       pointerEvents="all"
       transform={`translate(${point})`}
     >
       <HandleCircleOuter r={12} />
-      <DotCircle r={4} />
-    </g>
+      <use href="#handle" pointerEvents="none" />
+    </StyledGroup>
   )
 }
 
-const HandleCircleOuter = styled('circle', {
-  fill: 'transparent',
-  pointerEvents: 'all',
+const StyledGroup = styled('g', {
+  '&:hover': {
     cursor: 'pointer',
+  },
+  '&:active': {
+    cursor: 'none',
+  },
 })
 
-const HandleCircle = styled('circle', {
-  zStrokeWidth: 2,
-  stroke: '$text',
-  fill: '$panel',
-  pointerEvents: 'none',
+const HandleCircleOuter = styled('circle', {
+  fill: 'transparent',
+  stroke: 'none',
+  opacity: 0.2,
+  pointerEvents: 'all',
+  cursor: 'pointer',
+  transform: 'scale(var(--scale))',
+  '&:hover': {
+    fill: '$selected',
+    '& > *': {
+      stroke: '$selected',
+    },
+  },
+  '&:active': {
+    fill: '$selected',
+  },
 })

components/canvas/canvas.tsx

@@ -62,7 +62,7 @@ export default function Canvas() {
         <g ref={rGroup}>
           <BoundsBg />
           <Page />
-          {/* <Selected /> */}
+          <Selected />
           <Bounds />
           <Handles />
           <Brush />

components/canvas/defs.tsx

@@ -2,6 +2,7 @@ import { getShapeUtils } from 'lib/shape-utils'
 import { memo } from 'react'
 import { useSelector } from 'state'
 import { deepCompareArrays, getCurrentCamera, getPage } from 'utils/utils'
+import { DotCircle, Handle } from './misc'
 
 export default function Defs() {
   const zoom = useSelector((s) => getCurrentCamera(s.data).zoom)
@@ -17,6 +18,8 @@ export default function Defs() {
       {currentPageShapeIds.map((id) => (
         <Def key={id} id={id} />
       ))}
+      <DotCircle id="dot" r={4} />
+      <Handle id="handle" r={4} />
       <filter id="expand">
         <feMorphology operator="dilate" radius={2 / zoom} />
       </filter>

components/canvas/misc.tsx

@@ -7,6 +7,13 @@ export const DotCircle = styled('circle', {
   strokeWidth: '2',
 })
 
+export const Handle = styled('circle', {
+  transform: 'scale(var(--scale))',
+  fill: '$canvas',
+  stroke: '$selected',
+  strokeWidth: '2',
+})
+
 export const ThinLine = styled('line', {
   zStrokeWidth: 1,
 })

components/canvas/selected.tsx

@@ -12,7 +12,7 @@ export default function Selected() {
     return Array.from(data.selectedIds.values())
   }, deepCompareArrays)
 
-  const isSelecting = useSelector((s) => s.isIn('selecting'))
+  const isSelecting = useSelector((s) => s.isInAny('notPointing', 'pinching'))
 
   if (!isSelecting) return null
 
@@ -44,7 +44,6 @@ export const ShapeOutline = memo(function ShapeOutline({ id }: { id: string }) {
   rotate(${shape.rotation * (180 / Math.PI)}, 
   ${center})
   translate(${bounds.minX},${bounds.minY})
-  rotate(${(bounds.rotation || 0) * (180 / Math.PI)}, 0, 0)
   `
 
   return (

lib/shape-utils/arrow.tsx

@@ -93,10 +93,11 @@ const arrow = registerShapeUtils<ArrowShape>({
   },
 
   render(shape) {
-    const { id, bend, points, handles } = shape
+    const { id, bend, handles } = shape
     const { start, end, bend: _bend } = handles
 
     const arrowDist = vec.dist(start.point, end.point)
+
     const showCircle = !vec.isEqual(
       _bend.point,
       vec.med(start.point, end.point)
@@ -145,8 +146,8 @@ const arrow = registerShapeUtils<ArrowShape>({
     const length = Math.min(arrowDist / 2, 16 + +style.strokeWidth * 2)
     const u = vec.uni(vec.vec(start.point, end.point))
     const v = vec.rot(vec.mul(vec.neg(u), length), endAngle)
-    const b = vec.add(points[1], vec.rot(v, Math.PI / 6))
-    const c = vec.add(points[1], vec.rot(v, -(Math.PI / 6)))
+    const b = vec.add(end.point, vec.rot(v, Math.PI / 6))
+    const c = vec.add(end.point, vec.rot(v, -(Math.PI / 6)))
 
     return (
       <g id={id}>
@@ -159,7 +160,7 @@ const arrow = registerShapeUtils<ArrowShape>({
           strokeDasharray="none"
         />
         <polyline
-          points={[b, points[1], c].join()}
+          points={[b, end.point, c].join()}
           strokeLinecap="round"
           strokeLinejoin="round"
           fill="none"
@@ -170,6 +171,15 @@ const arrow = registerShapeUtils<ArrowShape>({
   },
 
   getBounds(shape) {
+    if (!this.boundsCache.has(shape)) {
+      const { start, end } = shape.handles
+      this.boundsCache.set(shape, getBoundsFromPoints([start.point, end.point]))
+    }
+
+    return translateBounds(this.boundsCache.get(shape), shape.point)
+  },
+
+  getRotatedBounds(shape) {
     if (!this.boundsCache.has(shape)) {
       this.boundsCache.set(shape, getBoundsFromPoints(shape.points))
     }

lib/shape-utils/dot.tsx

@@ -4,7 +4,6 @@ import { DotShape, ShapeType } from 'types'
 import { registerShapeUtils } from './index'
 import { boundsContained } from 'utils/bounds'
 import { intersectCircleBounds } from 'utils/intersections'
-import { DotCircle } from 'components/canvas/misc'
 import { translateBounds } from 'utils/utils'
 import { defaultStyle } from 'lib/shape-styles'
 
@@ -34,7 +33,7 @@ const dot = registerShapeUtils<DotShape>({
   },
 
   render({ id }) {
-    return <DotCircle id={id} cx={0} cy={0} r={3} />
+    return <use href="#dot" />
   },
 
   getBounds(shape) {

lib/shape-utils/line.tsx

@@ -4,7 +4,7 @@ import { LineShape, ShapeType } from 'types'
 import { registerShapeUtils } from './index'
 import { boundsContained } from 'utils/bounds'
 import { intersectCircleBounds } from 'utils/intersections'
-import { DotCircle, ThinLine } from 'components/canvas/misc'
+import { ThinLine } from 'components/canvas/misc'
 import { translateBounds } from 'utils/utils'
 import styled from 'styles'
 import { defaultStyle } from 'lib/shape-styles'
@@ -42,7 +42,7 @@ const line = registerShapeUtils<LineShape>({
     return (
       <g id={id}>
         <ThinLine x1={x1} y1={y1} x2={x2} y2={y2} />
-        <DotCircle cx={0} cy={0} r={3} />
+        <use href="dot" />
       </g>
     )
   },

lib/shape-utils/ray.tsx

@@ -4,7 +4,7 @@ import { RayShape, ShapeType } from 'types'
 import { registerShapeUtils } from './index'
 import { boundsContained } from 'utils/bounds'
 import { intersectCircleBounds } from 'utils/intersections'
-import { DotCircle, ThinLine } from 'components/canvas/misc'
+import { ThinLine } from 'components/canvas/misc'
 import { translateBounds } from 'utils/utils'
 import { defaultStyle } from 'lib/shape-styles'
 
@@ -40,7 +40,7 @@ const ray = registerShapeUtils<RayShape>({
     return (
       <g id={id}>
         <ThinLine x1={0} y1={0} x2={x2} y2={y2} />
-        <DotCircle cx={0} cy={0} r={3} />
+        <use href="#dot" />
       </g>
     )
   },

state/commands/arrow.ts

@@ -1,6 +1,7 @@
 import Command from './command'
 import history from '../history'
 import { ArrowShape, Data } from 'types'
+import * as vec from 'utils/vec'
 import { getPage } from 'utils/utils'
 import { ArrowSnapshot } from 'state/sessions/arrow-session'
 import { getShapeUtils } from 'lib/shape-utils'
@@ -21,7 +22,9 @@ export default function arrowCommand(
 
         const { initialShape, currentPageId } = after
 
-        getPage(data, currentPageId).shapes[initialShape.id] = initialShape
+        const page = getPage(data, currentPageId)
+
+        page.shapes[initialShape.id] = initialShape
 
         data.selectedIds.clear()
         data.selectedIds.add(initialShape.id)

state/commands/handle.ts

@@ -4,6 +4,7 @@ import { Data } from 'types'
 import { getPage } from 'utils/utils'
 import { HandleSnapshot } from 'state/sessions/handle-session'
 import { getShapeUtils } from 'lib/shape-utils'
+import * as vec from 'utils/vec'
 
 export default function handleCommand(
   data: Data,
@@ -16,13 +17,26 @@ export default function handleCommand(
       name: 'moved_handle',
       category: 'canvas',
       do(data, isInitial) {
-        if (isInitial) return
+        // if (isInitial) return
 
         const { initialShape, currentPageId } = after
 
-        const shape = getPage(data, currentPageId).shapes[initialShape.id]
+        const page = getPage(data, currentPageId)
+        const shape = page.shapes[initialShape.id]
 
         getShapeUtils(shape).onHandleChange(shape, initialShape.handles)
+
+        const bounds = getShapeUtils(shape).getBounds(shape)
+
+        const offset = vec.sub([bounds.minX, bounds.minY], shape.point)
+
+        getShapeUtils(shape).translateTo(shape, vec.add(shape.point, offset))
+
+        const { start, end, bend } = page.shapes[initialShape.id].handles
+
+        start.point = vec.sub(start.point, offset)
+        end.point = vec.sub(end.point, offset)
+        bend.point = vec.sub(bend.point, offset)
       },
       undo(data) {
         const { initialShape, currentPageId } = before

state/state.ts

@@ -330,8 +330,6 @@ const state = createState({
                 CANCELLED: { do: 'cancelSession', to: 'selecting' },
               },
             },
-          },
-        },
             pinching: {
               on: {
                 PINCHED: { do: 'pinchCamera' },
@@ -350,6 +348,8 @@ const state = createState({
                 },
               },
             },
+          },
+        },
         usingTool: {
           initial: 'draw',
           onEnter: 'clearSelectedIds',

todo.md

@@ -8,3 +8,6 @@
 - Allow single-selected groups to transform their children correctly
 - (merge transform-session and transform-single-session)
 - fix drift when moving children of rotated group
+- shift dragging arrow handles should lock to directions
+- arrow rotation with handles
+- fix ellipse when scaleX < 0 or scaleY < 0