semi working angle

src/Scene.js

@@ -111,8 +111,8 @@ export class Scene {
     helpersGroup.add(this.axes);
 
 
-    const dist = 50
-    const light1 = new THREE.PointLight(color.lighting, 0.7);
+    const dist = 15
+    const light1 = new THREE.PointLight(color.lighting, 0.6);
     light1.position.set(dist, dist, dist);
     helpersGroup.add(light1);
     const light2 = new THREE.PointLight(color.lighting, 0.6);
@@ -292,7 +292,7 @@ export class Scene {
 
   }
 
-  subtract(m1, m2) {
+  subtract(m1, m2, op) {
     let bspA = CSG.fromMesh(m1)
     let bspB = CSG.fromMesh(m2)
     m1.visible = false
@@ -302,13 +302,30 @@ export class Scene {
 
     // // Subtract one bsp from the other via .subtract... other supported modes are .union and .intersect
 
-    let bspResult = bspA.subtract(bspB)
+    let bspResult, opChar;
+    switch (op) {
+      case 's':
+        bspResult = bspA.subtract(bspB)
+        opChar = "-"
+        break;
+      case 'u':
+        bspResult = bspA.union(bspB)
+        opChar = "\u222a"
+        break;
+      case 'i':
+        bspResult = bspA.intersect(bspB)
+        opChar = "\u2229"
+        break;
+      default:
+        break;
+    }
 
     // //Get the resulting mesh from the result bsp, and assign meshA.material to the resulting mesh
 
     let mesh = CSG.toMesh(bspResult, m1.matrix, m1.material)
     mesh.userData.type = 'mesh'
-    mesh.name = `${m1.name}-${m2.name}`
+
+    mesh.name = `(${m1.name}${opChar}${m2.name})`
     mesh.layers.enable(1)
 
 

src/Sketch.js

@@ -11,6 +11,7 @@ import { get3PtArc } from './drawArc'
 import { replacer, reviver } from './utils'
 import { AxesHelper } from './sketchAxes'
 import { drawDimension, _onMoveDimension, setDimLines, updateDim } from './drawDimension';
+import { drawAngle, _onMoveAngle, setAngLines, updateAng } from './drawAngle';
 
 
 
@@ -128,9 +129,13 @@ class Sketch {
     this.drawOnClick2 = drawOnClick2.bind(this);
 
     this.drawDimension = drawDimension.bind(this)
+    this.drawAngle = drawAngle.bind(this)
     this._onMoveDimension = _onMoveDimension.bind(this)
+    this._onMoveAngle = _onMoveAngle.bind(this)
     this.setDimLines = setDimLines.bind(this)
+    this.setAngLines = setAngLines.bind(this)
     this.updateDim = updateDim.bind(this)
+    this.updateAng = updateAng.bind(this)
 
     this.awaitSelection = awaitSelection.bind(this);
 
@@ -152,7 +157,7 @@ class Sketch {
 
     this.setDimLines()
 
-    this.obj3d.traverse(e=>e.layers.enable(2))
+    this.obj3d.traverse(e => e.layers.enable(2))
     this.obj3d.visible = true
     this.scene.axes.matrix = this.obj3d.matrix
     this.scene.axes.visible = true
@@ -168,7 +173,7 @@ class Sketch {
     this.store.dispatch({ type: 'exit-sketch' })
     this.labelContainer.innerHTML = ""
     this.obj3d.visible = false
-    this.obj3d.traverse(e=>e.layers.disable(2))
+    this.obj3d.traverse(e => e.layers.disable(2))
     this.scene.axes.visible = false
     this.scene.activeSketch = null
   }
@@ -221,6 +226,10 @@ class Sketch {
         this.drawDimension()
         this.mode = ""
         break;
+      case 'q':
+        this.drawAngle()
+        this.mode = ""
+        break;
       case 'p':
         this.canvas.addEventListener('pointerdown', this.drawOnClick1)
         this.mode = "point"
@@ -427,9 +436,9 @@ class Sketch {
       this.linkedObjs.size, links_buffer)
 
     /*
-    - loop to update all the children that are points
-    - why +6?  we skip first two triplets because it refers to a non-geometry children
-    - we also sneak in updating lines children as well, by checking when ptsBuf[ptr] is NaN
+      - loop to update all the children that are points
+      - why +6?  we skip first two triplets because it refers to a non-geometry children
+      - we also sneak in updating lines children as well, by checking when ptsBuf[ptr] is NaN
     */
 
     for (let i = 3, ptr = (pts_buffer >> 2) + 9; i < this.obj3d.children.length; i += 1, ptr += 3) {
@@ -457,6 +466,7 @@ class Sketch {
       arcs were not updated in above loop, we go through all arcs linkedObjs 
       and updated based on the control pts (which were updated in loop above) 
     */
+
     for (let [k, obj] of this.linkedObjs) {
       if (obj[0] != 'arc') continue;
       const [p1, p2, c, arc] = obj[1].map(e => this.obj3d.children[this.objIdx.get(e)])
@@ -472,7 +482,8 @@ class Sketch {
     }
 
 
-    this.setDimLines()
+    // this.setDimLines()
+    this.setAngLines()
 
     this.obj3d.dispatchEvent({ type: 'change' })
   }

src/drawAngle.js

@@ -0,0 +1,395 @@
+import * as THREE from '../node_modules/three/src/Three';
+import { color } from './shared'
+
+const lineMaterial = new THREE.LineBasicMaterial({
+  linewidth: 2,
+  color: color.dimension,
+})
+
+
+const pointMaterial = new THREE.PointsMaterial({
+  color: color.dimension,
+  size: 4,
+})
+
+
+
+
+
+const divisions = 12
+
+export async function drawAngle() {
+  let selection = await this.awaitSelection({ line: 2 })
+
+  if (selection == null) return;
+
+  const line = new THREE.LineSegments(
+    new THREE.BufferGeometry().setAttribute('position',
+      new THREE.Float32BufferAttribute(Array((divisions + 2) * 2 * 3).fill(-0.001), 3)
+    ),
+    lineMaterial.clone()
+  );
+
+  const point = new THREE.Points(
+    new THREE.BufferGeometry().setAttribute('position',
+      new THREE.Float32BufferAttribute(3, 3)
+    ),
+    pointMaterial.clone()
+  )
+
+  line.userData.ids = selection.map(e => e.name)
+
+  line.layers.enable(2)
+  point.layers.enable(2)
+
+  let angle = getAngle(selection)
+
+
+  this.obj3d.children[1].add(line).add(point)
+
+  const onMove = this._onMoveAngle(point, line)
+
+  point.label = document.createElement('div');
+  point.label.textContent = angle.toFixed(3);
+  point.label.contentEditable = true;
+  this.labelContainer.append(point.label)
+
+  let onEnd, onKey;
+  let add = await new Promise((res) => {
+    onEnd = (e) => res(true)
+    onKey = (e) => e.key == 'Escape' && res(false)
+
+    this.canvas.addEventListener('pointermove', onMove)
+    this.canvas.addEventListener('pointerdown', onEnd)
+    window.addEventListener('keydown', onKey)
+  })
+
+  this.canvas.removeEventListener('pointermove', onMove)
+  this.canvas.removeEventListener('pointerdown', onEnd)
+  window.removeEventListener('keydown', onKey)
+  point.geometry.computeBoundingSphere()
+  line.geometry.computeBoundingSphere()
+
+  if (add) {
+
+    this.constraints.set(++this.c_id,
+      [
+        'angle', angle,
+        [-1, -1, selection[0].name, selection[1].name]
+      ]
+    )
+
+    selection[0].userData.constraints.push(this.c_id)
+    selection[1].userData.constraints.push(this.c_id)
+
+    this.updateOtherBuffers()
+
+    line.name = this.c_id
+    line.userData.type = 'dimension'
+    point.name = this.c_id
+    point.userData.type = 'dimension'
+
+    point.label.addEventListener('focus', this.updateAng(this.c_id))
+
+  } else {
+
+    this.obj3d.children[1].children.splice(this.obj3d.children[1].length - 2, 2).forEach(
+      e => {
+        e.geometry.dispose()
+        e.material.dispose()
+      }
+    )
+    this.labelContainer.removeChild(this.labelContainer.lastChild);
+    sc.render()
+  }
+
+  return
+}
+
+
+
+export function updateAng(c_id) {
+  return (ev_focus) => {
+    let value = ev_focus.target.textContent
+    document.addEventListener('keydown', (e) => {
+      if (e.key == 'Enter') {
+        e.preventDefault()
+        const ent = this.constraints.get(c_id)
+        ent[1] = parseFloat(ev_focus.target.textContent)
+        value = ent[1]
+        this.constraints.set(c_id, ent)
+        this.updateOtherBuffers()
+        this.solve()
+        sc.render()
+        ev_focus.target.blur()
+        this.updateBoundingSpheres()
+      } else if (e.key == 'Escape') {
+        ev_focus.target.textContent = value
+        getSelection().empty()
+        ev_focus.target.blur()
+      }
+    })
+  }
+}
+
+
+let ids, _l1, _l2
+export function _onMoveAngle(point, line) {
+
+  ids = line.userData.ids
+
+  _l1 = this.obj3d.children[this.objIdx.get(ids[0])].geometry.attributes.position.array
+  _l2 = this.obj3d.children[this.objIdx.get(ids[1])].geometry.attributes.position.array
+
+  let loc;
+
+  return (e) => {
+    loc = this.getLocation(e)
+
+    p3.set(loc.x, loc.y)
+
+    update(
+      line.geometry.attributes.position,
+      point.geometry.attributes.position,
+      _l1, _l2
+    )
+
+    // point.userData.offset = tagOffset.toArray() // save offset vector from center
+    point.userData.offset = tagOffset // save offset vector from center
+    tagOffset = undefined
+
+    sc.render()
+  }
+}
+
+
+export function setAngLines() {
+
+  const restoreLabels = this.labelContainer.childElementCount == 0;
+
+  const dims = this.obj3d.children[1].children
+
+  let point, dist;
+  for (let i = 0; i < dims.length; i += 2) {
+    if (restoreLabels) {
+      point = dims[i + 1]  // point node is at i+1
+      dist = this.constraints.get(point.name)[1]
+      point.label = document.createElement('div');
+      point.label.textContent = dist.toFixed(3);
+      point.label.contentEditable = true;
+      this.labelContainer.append(point.label)
+
+      point.label.addEventListener('focus', this.updateAng(this.c_id))
+    }
+
+    ids = dims[i].userData.ids
+
+    _l1 = this.obj3d.children[this.objIdx.get(ids[0])].geometry.attributes.position.array
+    _l2 = this.obj3d.children[this.objIdx.get(ids[1])].geometry.attributes.position.array
+
+
+    tagOffset = dims[i + 1].userData.offset
+
+
+
+    update(
+      dims[i].geometry.attributes.position,
+      dims[i + 1].geometry.attributes.position,
+      _l1,
+      _l2
+    )
+  }
+
+}
+
+
+
+export function findIntersection(q, s, p, r) {
+  /*
+    Based on: https://stackoverflow.com/questions/563198/
+
+    q+s  p+r
+      \/__________ q+u*s
+      /\  
+     /  \
+    p    q
+    
+    u = (q − p) × r / (r × s)
+    when r × s = 0, the lines are either colinear or parallel
+
+    function returns u
+    for "real" intersection to exist, 0<u<1
+  */
+  const q_minus_p = q.clone().sub(p);
+  const r_cross_s = r.cross(s);
+  if (r_cross_s === 0) return null; //either colinear or parallel
+  return q_minus_p.cross(r) / r_cross_s;
+}
+
+
+
+/*
+                        _l2:[x0,y0,z0,x1,y1,z1]
+                        /
+              p3:tag-""/-. 
+  tagOffset[1]-->|        \
+                 |__ .    _|__ _l1:[x0,y0,z0,x1,y1,z1]
+  tagOffset[0]----^  ^--center
+
+  vecArr = [
+    0: _l1 origin
+    1: _l1 disp
+    2: _l2 origin
+    3: _l2 disp
+    4: center
+    5: tag disp from center
+  ]
+*/
+
+const vecArr = Array(6)
+for (var i = 0; i < vecArr.length; i++) vecArr[i] = new THREE.Vector2();
+const a = Array(3)
+const p3 = new THREE.Vector2()
+let tagOffset
+
+const getAngle = (Obj3dLines) => {
+  for (let i = 0; i < 2; i++) {
+    const arr = Obj3dLines[i].geometry.attributes.position.array
+    vecArr[2 * i].set(...arr.slice(0, 2))
+    vecArr[2 * i + 1].set(arr[3] - arr[0], arr[4] - arr[1])
+  }
+  const a1 = Math.atan2(vecArr[1].y, vecArr[1].x)
+  const a2 = Math.atan2(vecArr[3].y, vecArr[3].x)
+
+  let deltaAngle = Math.abs(a2 - a1)
+  if (deltaAngle > Math.PI) {
+    deltaAngle = Math.PI * 2 - deltaAngle
+  }
+  return deltaAngle / Math.PI * 180
+}
+
+function update(linegeom, pointgeom, _l1, _l2) {
+
+  let i = 0;
+  for (; i < 4;) {
+    const arr = i == 0 ? _l1 : _l2
+    vecArr[i++].set(arr[0], arr[1])
+    vecArr[i++].set(arr[3] - arr[0], arr[4] - arr[1])
+  }
+
+  const centerScalar = findIntersection(...vecArr.slice(0, 4))
+  const center = vecArr[i++].addVectors(vecArr[0], vecArr[1].clone().multiplyScalar(centerScalar))
+
+  // tagOffset = vecArr[i++].subVectors(p3, center)
+
+  if (tagOffset === undefined) {
+    tagOffset = vecArr[i++].subVectors(p3, center)
+  // } else if (Array.isArray(tagOffset)) {
+    // tagOffset = new THREE.Vector2(tagOffset[0],tagOffset[1])
+  } else {
+    p3.addVectors(center, tagOffset)
+  }
+
+  // console.log(p3, center, 'vr')
+  // console.log(vecArr, 'vecArr')
+
+  // console.log(tagOffset, xx)
+  // console.log(tagOffset.length())
+  const tagRadius = tagOffset.length()
+
+  /*
+    if tag is more than 90 deg away from midline, we shift everything by 180
+
+    a: array that describes absolute angular position of angle start, angle end, and tag
+
+       a[2]:      
+        tag  a[1]:angle end
+      \  |  /
+       \ | /
+     ___\|/___ a[0]+dA/2:midline
+        / \
+       /   \
+      /     \
+             a[0]:angle start 
+  */
+
+  for (let j = 1, i = 0; j < vecArr.length; j += 2, i++) {
+    a[i] = Math.atan2(vecArr[j].y, vecArr[j].x)
+  }
+
+  let dA = unreflex(a[1] - a[0])
+
+
+  let tagtoMidline = unreflex(a[2] - (a[0] + dA / 2))
+
+  let shift = Math.abs(tagtoMidline) < Math.PI / 2 ? 0 : Math.PI;
+
+  let tA1 = unreflex(a[2] - (a[0] + shift))
+  let tA2 = unreflex(a[2] - (a[0] + dA + shift))
+
+
+  let a1, deltaAngle;
+  if (dA * tA1 < 0) {
+    a1 = a[0] + tA1 + shift
+    deltaAngle = dA - tA1
+  } else if (dA * tA2 > 0) {
+    a1 = a[0] + shift
+    deltaAngle = dA + tA2
+  } else {
+    a1 = a[0] + shift
+    deltaAngle = dA
+  }
+
+  let points = linegeom.array
+
+  let d = 0;
+  points[d++] = center.x + tagRadius * Math.cos(a1)
+  points[d++] = center.y + tagRadius * Math.sin(a1)
+  d++
+
+  const angle = a1 + (1 / divisions) * deltaAngle
+  points[d++] = center.x + tagRadius * Math.cos(angle)
+  points[d++] = center.y + tagRadius * Math.sin(angle)
+  d++
+
+  for (i = 2; i <= divisions; i++) {
+    points[d++] = points[d - 4]
+    points[d++] = points[d - 4]
+    d++
+    const angle = a1 + (i / divisions) * deltaAngle
+    points[d++] = center.x + tagRadius * Math.cos(angle)
+    points[d++] = center.y + tagRadius * Math.sin(angle)
+    d++
+  }
+
+
+  for (i = 0; i < 2; i++) {
+    points[d++] = vecArr[2 * i].x
+    points[d++] = vecArr[2 * i].y
+    d++
+    points[d++] = center.x + tagRadius * Math.cos(a[i] + shift)
+    points[d++] = center.y + tagRadius * Math.sin(a[i] + shift)
+    d++
+  }
+
+  linegeom.needsUpdate = true;
+
+  pointgeom.array.set(p3.toArray())
+  pointgeom.needsUpdate = true;
+
+
+}
+
+
+const twoPi = Math.PI * 2
+const negTwoPi = - Math.PI * 2
+const negPi = - Math.PI
+
+function unreflex(angle) {
+  if (angle > Math.PI) {
+    angle = negTwoPi + angle
+  } else if (angle < negPi) {
+    angle = twoPi + angle
+  }
+  return angle
+}

src/drawArc.js

@@ -83,9 +83,38 @@ export function get3PtArc(p1, p2, c, divisions = n) {
 
   const radius = Math.sqrt(v1[0] ** 2 + v1[1] ** 2)
 
+
   let deltaAngle = a2 - a1
   if (deltaAngle <=0) deltaAngle += Math.PI*2
-  // console.log(deltaAngle)
+
+  // let deltaAngle = a2 - a1
+  // if (deltaAngle > Math.PI ){
+  //   deltaAngle = - Math.PI*2 + deltaAngle
+  // } else if (deltaAngle < -Math.PI) {
+  //   deltaAngle =  Math.PI*2 + deltaAngle
+  // }
+
+  // let deltaAngle = Math.abs(a2 - a1)
+  // if (deltaAngle > Math.PI){
+  //   deltaAngle = Math.PI*2 - deltaAngle
+  // }
+
+  
+  let points = new Float32Array((divisions + 1) * 3)
+
+  for (let d = 0; d <= divisions; d++) {
+    const angle = a1 + (d / divisions) * deltaAngle;
+    points[3 * d] = c[0] + radius * Math.cos(angle);
+    points[3 * d + 1] = c[1] + radius * Math.sin(angle);
+  }
+  return points;
+}
+
+
+export function getAngleArc(a1, a2, c, radius, divisions = n) {
+
+
+  let deltaAngle = a2 - a1
   
   let points = new Float32Array((divisions + 1) * 3)
 

src/extrude.js

@@ -1,5 +1,5 @@
 import * as THREE from '../node_modules/three/src/Three';
-import { color, ptObj } from './shared'
+import { color} from './shared'
 export function extrude(sketch) {
 
   let constraints = sketch.constraints;
@@ -36,7 +36,7 @@ export function extrude(sketch) {
         )
       ]
       if (d == -1 || d == node) continue;
-      if (d == children[1]) {
+      if (d == children[4]) {
         console.log('pair found')
       };
       findTouching(d)
@@ -52,7 +52,7 @@ export function extrude(sketch) {
         if (c == -1) continue;
         const d = children[objIdx.get(c)]
         if (d == node) continue;
-        if (d == children[1]) {
+        if (d == children[4]) {
           console.log('loop found')
         } else {
           if (!visited.has(d)) {

src/react/app.css

@@ -11,7 +11,7 @@ body {
   font-family: sans-serif;
   overflow: hidden;
   --topNavH: 48px;
-  --sideNavW: 200px;
+  --sideNavW: 240px;
 }
 
 #c {

src/react/navBar.jsx

@@ -15,6 +15,20 @@ export const NavBar = () => {
   const treeEntries = useSelector(state => state.treeEntries)
   const activeSketchId = useSelector(state => state.treeEntries.activeSketchId)
 
+
+  const boolOp = (code) => {
+    if (sc.selected.length != 2 || !sc.selected.every(e => e.userData.type == 'mesh')) return
+    const [m1, m2] = sc.selected
+    const mesh = sc.subtract(m1, m2, code)
+    dispatch({ type: 'rx-boolean', mesh, deps: [m1.name, m2.name] })
+    sc.render()
+    forceUpdate()
+  }
+  const extrude = () => {
+    console.log(treeEntries.tree[activeSketchId])
+    sc.extrude(treeEntries.byId[activeSketchId])
+  }
+
   useEffect(() => {
     if (!activeSketchId) {
       sc.canvas.addEventListener('pointermove', sc.onHover)
@@ -39,19 +53,10 @@ export const NavBar = () => {
       }, 'Finish'] :
       [FaEdit, sc.addSketch, 'Sketch [s]']
     ,
-    [FaCube, () => sc.extrude(treeEntries.byId[activeSketchId]), 'Extrude [e]'],
-    [Icon.Union, () => sc.extrude(treeEntries.byId[activeSketchId]), 'Union'],
-    [Icon.Subtract, () => {
-      if (sc.selected.length != 2 || !sc.selected.every(e => e.userData.type == 'mesh')) return
-      // console.log('here')
-      const [m1, m2] = sc.selected
-      const mesh = sc.subtract(m1, m2)
-
-      dispatch({ type: 'rx-boolean', mesh, deps: [m1.name, m2.name] })
-      sc.render()
-      forceUpdate()
-    }, 'Subtract'],
-    [Icon.Intersect, () => sc.extrude(treeEntries.byId[activeSketchId]), 'Intersect'],
+    [FaCube, extrude , 'Extrude [e]'],
+    [Icon.Union, ()=>boolOp('u'), 'Union'],
+    [Icon.Subtract, ()=>boolOp('s'), 'Subtract'],
+    [Icon.Intersect, ()=>boolOp('i'), 'Intersect'],
     [Icon.Dimension, () => sc.extrude(treeEntries.byId[activeSketchId]), 'Dimension [d]'],
     [Icon.Line, () => sc.extrude(treeEntries.byId[activeSketchId]), 'Line [l]'],
     [Icon.Arc, () => sc.extrude(treeEntries.byId[activeSketchId]), 'Arc [a]'],

src/react/reducer.js

@@ -92,7 +92,7 @@ export function reducer(state = {}, action) {
 
 
       return update(state, {
-        treeEntries: { $set: obj }
+        treeEntries: { $merge: obj }
       })
 
 

src/react/tree.jsx

@@ -48,12 +48,10 @@ const TreeEntry = ({ entId }) => {
   const [_, forceUpdate] = useReducer(x => x + 1, 0);
 
 
-  // const vis = obj3d.layers.mask & 1
-
   return <div className='btn select-none flex justify-start w-full h-7 items-center text-sm'
 
     onDoubleClick={() => {
-      if (entId[0] == 's') {
+      if (obj3d.userData.type == 'sketch') {
         activeSketchId && treeEntries[activeSketchId].deactivate()
         sketch.activate()
         sc.clearSelection()
@@ -67,14 +65,13 @@ const TreeEntry = ({ entId }) => {
       sc.render()
     }}
     onPointerLeave={() => {
-      // console.log('activeid',activeSketchId,'visstate',visState)
-      if (visible & entId[0] == 's') return
+      if (visible & obj3d.userData.type == 'sketch') return
       if (sc.selected.includes(obj3d) || activeSketchId == obj3d.name) return
       sc.setHover(obj3d, 0)
       sc.render()
     }}
     onClick={() => {
-      if (entId[0] == 'm') {
+      if (obj3d.userData.type == 'mesh') {
         sc.selected.push(
           obj3d
         )

todo.txt

@@ -14,26 +14,30 @@ boolean flesh out refresh / replace mesh
   - consume skeches after extrude // done
 - selection hover disspates when rehovered //fixed
 - boolean unable to select click //fixed
+- hover sync between tree and work area // done, punt on stretch
 
 
 vertical  //  done
 horizontal // done
+- select sketch for extrusion, punt, leverage current sketch modality
+
 
 
-- hover sync between tree and work area
-- select sketch for extrusion 
 
 auto update extrude
 extrude dialogue 
 
 loopfind
-button panel cleanup
+
 file save, stl export
 
-constriant buttons ,tangent, angle
+button panel cleanup
+
+constraint angle
+3 pt arc
 
 
-constraint labels
 reattach sketch
+constraint labels, tangent
 auto snap
 tree ent renaming and better default names