add ordinate dimension and fix tangent

demo_parts/cable-clip.json

@@ -0,0 +1 @@
+[0,1,1,{"byId":{},"allIds":[],"tree":{},"order":{},"visible":{}}]

demo_parts/webpack.prod.js

@@ -1,10 +0,0 @@
-const { merge } = require('webpack-merge');
-
-const common = require('./webpack.common.js');
-
-
-module.exports = merge(common, {
-
-  mode: 'production',
-
-});

extlib/trackball.js

@@ -25,7 +25,7 @@ var TrackballControls = function ( object, domElement ) {
 
 	this.rotateSpeed = 3.0;
 	this.zoomSpeed = 1.2;
-	this.panSpeed = 41.6;
+	this.panSpeed = 2;
 
 	this.noRotate = false;
 	this.noZoom = false;

src/Scene.js

@@ -44,11 +44,11 @@ export class Scene {
     this.store = store
 
     const size = 1;
-    const near = 0;
+    const near = -1;
-    const far = 100;
+    const far = 1000;
     this.camera = new THREE.OrthographicCamera(-size, size, size, -size, near, far);
-    this.camera.zoom = 0.1;
+    this.camera.zoom = 0.008;
-    const cameraDist = 50
+    const cameraDist = 500
     const xzAngle = 30 * Math.PI / 180
     this.camera.position.set(
       cameraDist * Math.sin(xzAngle),
@@ -94,7 +94,7 @@ export class Scene {
     this.fptObj = {}
 
 
-    const planeGeom = new THREE.PlaneGeometry(5, 5)
+    const planeGeom = new THREE.PlaneGeometry(50, 50)
     const pxy = new THREE.Mesh(
       planeGeom,
       new THREE.MeshBasicMaterial({
@@ -128,7 +128,7 @@ export class Scene {
     helpersGroup.add(this.axes);
 
 
-    const dist = 15
+    const dist = 500
     const light1 = new THREE.PointLight(color.lighting, 0.7);
     light1.position.set(dist, dist, dist);
     helpersGroup.add(light1);

src/Sketch.js

@@ -24,8 +24,8 @@ class Sketch {
     // [0]:type, [1]:pt1, [2]:pt2, [3]:pt3, [4]:pt4
     this.linksBuf = new Float32Array(this.max_links * 5).fill(NaN)
 
-    // [0]:type, [1]:val, [2]:pt1, [3]:pt2, [4]:lk1, [5]:lk2
+    // [0]:type, [1]:val, [2]:pt1, [3]:pt2, [4]:lk1, [5]:lk2, [6]: other, [7]: other
-    this.constraintsBuf = new Float32Array(this.max_constraints * 6).fill(NaN)
+    this.constraintsBuf = new Float32Array(this.max_constraints * 8).fill(NaN)
 
 
     this.plane = new THREE.Plane(new THREE.Vector3(0, 0, 1), 0);
@@ -401,9 +401,9 @@ class Sketch {
       this.constraintsBuf.set(
         [
           this.constraintNum[obj[0]], obj[1],
-          ...obj[2].map(ele => this.objIdx.get(ele) ?? 0),
+          ...obj[2].map(ele => this.objIdx.get(ele) ?? 0), obj[3], obj[4]
         ],
-        (i) * 6
+        (i) * 8
       )
       i++
     }
@@ -587,6 +587,8 @@ Object.assign(Sketch.prototype,
       where_dragged: 31,
       curve_curve_tangent: 32,
       length_difference: 33,
+      h_dist: 34,
+      v_dist: 35,
     },
     max_pts: 1000,
     max_links: 1000,

src/axes.js

@@ -9,9 +9,9 @@ class AxesHelper extends THREE.Object3D {
     super()
     this.matrixAutoUpdate = false
     this.initialZoom = initialZoom
-    this.length = [0.55, 1]
+    this.length = [5.5, 10]
-    this.headLength = 0.25
+    this.headLength = 2.5
-    this.headWidth = 0.12
+    this.headWidth = 1.2
 
     this.dirs = [
       [1, 0, 0],

src/constraintEvents.js

@@ -81,24 +81,66 @@ export async function setTangent() {
   let selection = await this.awaitSelection({ line: 2 })
   if (selection == null) return;
 
-  let idx = -1
+  const res = {} // this helps us find the relavant coincident constraint connecting the 2 entities
+  let idx = -1 // -1: both are arcs, 0: selection[0] is line, 1 selection[1] is line
+  const others = [] // length 2 arr of the other flag
+  let type, arr
+
+  /**
+   *  a this.constraints entry:
+   * [0]: constraint type
+   * [1]: float value, -1 if not needed
+   * [2]: [pointA, pointB, entityA, entityB]
+   * [3]: other
+   * [4]: other2
+   * 
+   * a this.linkedObjs entry:
+   * [0]: type: arc or line
+   * [1]: [point1_id, point2_id, line_id]
+   */
+
   for (let i = 0; i < 2; i++) {
-    if (selection[i].userData.ccw == undefined) {
+    if (selection[i].userData.ccw == undefined) { // quick dirty way to check if entity is a arc
       idx = i
-      break
     }
+    const l_id = selection[i].userData.l_id
+    const ids = this.linkedObjs.get(l_id)[1]
+    for (let j = 0; j < 2; j++) {
+      const constraintsArr = this.obj3d.children[this.objIdx.get(ids[j])].userData.constraints
+      for (let k = 0; k < constraintsArr.length; k++) {
+        const constraint = this.constraints.get(constraintsArr[k])
+        if (constraint[0] == 'points_coincident') {
+          if (res[constraintsArr[k]]) { // if we've seen this constraint already, it means its the relevant constraint
+            for (let m = 0; m < 2; m++) {
+              others[m] = this.obj3d.children[this.objIdx.get(constraint[2][m])].userData.start ? 0 : 1
             }
 
-  let arr = idx == 0 ?
+            arr = idx == 0 ?
               [-1, -1, selection[1].name, selection[0].name] :
               [-1, -1, selection[0].name, selection[1].name];
+            type = idx == -1 ? 'curve_curve_tangent' : 'arc_line_tangent'
 
-  let type = idx == -1 ? 'curve_curve_tangent' : 'arc_line_tangent'
+            if (
+              (ids.includes(constraint[2][1]) && idx == 0) ||
+              (!ids.includes(constraint[2][1]) && idx != 0)
+            ) { // if selection[1] includes the first entitity 
+              let temp = others[0]
+              others[0] = others[1]
+              others[1] = temp
+            }
+            break
+          } else {
+            res[constraintsArr[k]] = true
+          }
+        }
+      }
+    }
+  }
 
   this.constraints.set(++this.c_id,
     [
       type, -1,
-      arr
+      arr, others[0], others[1]
     ]
   )
   selection.forEach(element => {

src/drawArc.js

@@ -106,12 +106,16 @@ export function drawArc4(mouseLoc, toPush) {
       p2.geometry.attributes.position.array,
       p3.geometry.attributes.position.array
     )
+    p1.userData.start = true
+    p2.userData.start = false
   } else {
     points = get3PtArc(
       p2.geometry.attributes.position.array,
       p1.geometry.attributes.position.array,
       p3.geometry.attributes.position.array
     )
+    p2.userData.start = true
+    p1.userData.start = false
   }
 
   arc.geometry.attributes.position.set(

src/drawDimension.js

@@ -12,12 +12,12 @@ const pointMaterial = new THREE.PointsMaterial({
   size: 4,
 })
 
-
+let dimVal
 export async function drawDimension() {
   let selection = await this.awaitSelection({ point: 2 }, { point: 1, line: 1 }, { line: 2 })
   if (selection == null) return;
 
-  let line, dimVal, constraint, dimType
+  let line, constraint, dimType
   if (selection.every(e => e.userData.type == 'line')) {
     line = new THREE.LineSegments(
       new THREE.BufferGeometry().setAttribute('position',
@@ -49,6 +49,13 @@ export async function drawDimension() {
         dimVal += (selection[0].geometry.attributes.position.array[i] - selection[1].geometry.attributes.position.array[i]) ** 2
       }
       dimVal = Math.sqrt(dimVal)
+
+      constraint = [
+        'pt_pt_distance', dimVal,
+        // 'smart_dist', dimVal,
+        [selection[0].name, selection[1].name, -1, -1]
+      ]
+
     } else {
       ptLineOrder = selection[0].userData.type == 'point' ? [0, 1] : [1, 0]
       const ptArr = selection[ptLineOrder[0]].geometry.attributes.position.array
@@ -61,19 +68,14 @@ export async function drawDimension() {
       proj = dir.multiplyScalar(disp.dot(dir))
       perpOffset = disp.clone().sub(proj)
       dimVal = Math.sqrt(perpOffset.x ** 2 + perpOffset.y ** 2)
-    }
+
-    if (ptLineOrder) {
       constraint = [
         'pt_line_distance', dimVal,
         [selection[ptLineOrder[0]].name, -1, selection[ptLineOrder[1]].name, -1]
       ]
-    } else {
-      constraint = [
-        'pt_pt_distance', dimVal,
-        [selection[0].name, selection[1].name, -1, -1]
-      ]
     }
 
+
     dimType = 'd'
   }
 
@@ -93,7 +95,7 @@ export async function drawDimension() {
   point.layers.enable(2)
 
   this.dimGroup.add(line).add(point)
-  const onMove = this._onMoveDimension(point, line)
+  const onMove = this._onMoveDimension(point, line, true)
   point.label = document.createElement('div');
   point.label.textContent = dimVal.toFixed(3);
   point.label.contentEditable = true;
@@ -102,10 +104,10 @@ export async function drawDimension() {
   let onEnd, onKey;
   let add = await new Promise((res) => {
     onEnd = () => {
-      if (point.userData.dimType == 'd') {
+      if (point.userData.dimType == 'a') {
-        point.userData.offset = hyp2.toArray() // save offset vector from hyp2
-      } else {
         point.userData.offset = vecArr[5].toArray()
+      } else {
+        point.userData.offset = hyp2.toArray() // save offset vector from hyp2
       }
       res(true)
     }
@@ -124,6 +126,17 @@ export async function drawDimension() {
 
   if (add) {
 
+
+
+    if (line.userData.dimType == 'h') {
+      constraint[0] = 'h_dist'
+      constraint[1] = p2.x - p1.x
+    } else if (line.userData.dimType == 'v') {
+      constraint[0] = 'v_dist'
+      constraint[1] = p2.y - p1.y
+    }
+
+
     this.constraints.set(++this.c_id, constraint)
 
     selection[0].userData.constraints.push(this.c_id)
@@ -181,7 +194,7 @@ export function updateDim(c_id) {
 
 const tagPos = new THREE.Vector2()
 let ids
-export function _onMoveDimension(point, line) {
+export function _onMoveDimension(point, line, initial) {
 
   ids = line.userData.ids
 
@@ -191,10 +204,10 @@ export function _onMoveDimension(point, line) {
   let loc;
 
   let update;
-  if (line.userData.dimType == 'd') {
+  if (line.userData.dimType == 'a') {
-    update = updateDistance
-  } else {
     update = updateAngle
+  } else {
+    update = updateDistance
   }
 
   return (e) => {
@@ -203,9 +216,9 @@ export function _onMoveDimension(point, line) {
     tagPos.set(loc.x, loc.y)
 
     update(
-      line.geometry.attributes.position,
+      line,
-      point.geometry.attributes.position,
+      point,
-      _p1, _p2
+      _p1, _p2, null, initial
     )
     sc.render()
   }
@@ -214,7 +227,7 @@ export function _onMoveDimension(point, line) {
 export function setDimLines() {
   const restoreLabels = this.labelContainer.childElementCount == 0;
   const dims = this.dimGroup.children
-  let point, dist;
+  let point, dist
   for (let i = 0; i < dims.length; i += 2) {
     if (restoreLabels) {
       point = dims[i + 1]  // point node is at i+1
@@ -232,15 +245,17 @@ export function setDimLines() {
     let _p2 = this.obj3d.children[this.objIdx.get(ids[1])].geometry.attributes.position.array
 
     let update;
-    if (dims[i].userData.dimType == 'd') {
+    if (dims[i].userData.dimType == 'a') {
-      update = updateDistance
-    } else {
       update = updateAngle
+    } else {
+      update = updateDistance
     }
 
     update(
-      dims[i].geometry.attributes.position,
+      // dims[i].geometry.attributes.position,
-      dims[i + 1].geometry.attributes.position,
+      // dims[i + 1].geometry.attributes.position,
+      dims[i],
+      dims[i + 1],
       _p1,
       _p2,
       dims[i + 1].userData.offset
@@ -262,7 +277,11 @@ let p1eArr, p2eArr, tagPosArr
 let dir, linedir, perpOffset
 let dp1e, dp2e, dp12
 
-function updateDistance(linegeom, pointgeom, _p1, _p2, offset) {
+function updateDistance(line, point, _p1, _p2, offset, initial) {
+
+  const linegeom = line.geometry.attributes.position
+  const pointgeom = point.geometry.attributes.position
+
   if (offset) {
     if (_p1.length < _p2.length) { // corner case when p1 is pt and p2 is line
       tagPos.set(_p1[0] + offset[0], _p1[1] + offset[1])
@@ -271,10 +290,44 @@ function updateDistance(linegeom, pointgeom, _p1, _p2, offset) {
     }
   }
 
+  let phantom = null
   if (_p1.length == _p2.length) {
     p1.set(_p1[0], _p1[1])
     p2.set(_p2[0], _p2[1])
 
+    if (initial) {
+      if (
+        (tagPos.x - p1.x) * (tagPos.x - p2.x) > 0 &&
+        (tagPos.y - p1.y) * (tagPos.y - p2.y) < 0
+      ) {
+        line.userData.dimType = 'v'
+        point.userData.dimType = 'v'
+        // point.label.textContent = Math.abs(p1.y - p2.y).toFixed(3);
+        point.label.textContent = (p2.y - p1.y).toFixed(3);
+      } else if (
+        (tagPos.x - p1.x) * (tagPos.x - p2.x) < 0 &&
+        (tagPos.y - p1.y) * (tagPos.y - p2.y) > 0
+      ) {
+        line.userData.dimType = 'h'
+        point.userData.dimType = 'h'
+        // point.label.textContent = Math.abs(p1.x - p2.x).toFixed(3);
+        point.label.textContent = (p2.x - p1.x).toFixed(3);
+      } else {
+        line.userData.dimType = 'd'
+        point.userData.dimType = 'd'
+        point.label.textContent = dimVal.toFixed(3);
+      }
+    }
+
+
+    switch (line.userData.dimType) {
+      case 'v':
+        phantom = [_p1[0] + 1, _p1[1]]
+        break;
+      case 'h':
+        phantom = [_p1[0], _p1[1] + 1]
+        break;
+      default:
         dir = p2.clone().sub(p1).normalize()
         hyp2 = tagPos.clone().sub(p2) // note that this value is used to calculate tag-p2 offset
         proj = dir.multiplyScalar(hyp2.dot(dir))
@@ -289,11 +342,20 @@ function updateDistance(linegeom, pointgeom, _p1, _p2, offset) {
         dp1e = p1e.distanceToSquared(tagPos)
         dp2e = p2e.distanceToSquared(tagPos)
         dp12 = p1e.distanceToSquared(p2e)
-
         linegeom.array.set(p1.toArray(), 0)
 
-  } else {
+        break;
-    if (_p1.length > _p2.length) { // when p1 is line, p2 is point
+    }
+
+  }
+
+
+  if (_p1.length != _p2.length || phantom) {
+    if (phantom) {
+      p1.set(_p1[0], _p1[1])
+      p1x.set(...phantom)
+      p2.set(_p2[0], _p2[1])
+    } else if (_p1.length > _p2.length) { // when p1 is line, p2 is point
       p1.set(_p1[0], _p1[1])
       p1x.set(_p1[3], _p1[4])
       p2.set(_p2[0], _p2[1])
@@ -431,7 +493,7 @@ function updateAngle(linegeom, pointgeom, _l1, _l2, offset) {
   tA1 = unreflex(a[2] - (a[0] + shift))
   tA2 = unreflex(a[2] - (a[0] + dA + shift))
 
-  if (dA * tA1 < 0) {
+  if (dA * tA1 < 0) { // if dA and tA1 are not the same sign
     a1 = a[0] + tA1 + shift
     deltaAngle = dA - tA1
   } else if (dA * tA2 > 0) {
@@ -506,9 +568,9 @@ const getAngle = (Obj3dLines) => {
 
 
 export function onDimMoveEnd(point) {
-  if (point.userData.dimType == 'd') {
+  if (point.userData.dimType == 'a') {
-    point.userData.offset = hyp2.toArray() // save offset vector from hyp2
-  } else {
     point.userData.offset = vecArr[5].toArray()
+  } else {
+    point.userData.offset = hyp2.toArray() // save offset vector from hyp2
   }
 }

src/react/navBar.jsx

@@ -47,6 +47,35 @@ export const NavBar = () => {
     forceUpdate()
   }
 
+  // const mirror = (plane) => {
+  //   if (sc.selected.length != 2 || ) {
+  //     alert('please first select two bodies for boolean operation')
+  //     return
+  //   }
+  //   const [m1, m2] = sc.selected
+
+  //   const mesh = sc.boolOp(m1, m2, code)
+
+  //   sc.obj3d.add(mesh)
+
+  //   dispatch({
+  //     type: 'set-entry-visibility', obj: {
+  //       [m1.name]: false,
+  //       [m2.name]: false,
+  //       [mesh.name]: true,
+  //     }
+  //   })
+
+  //   dispatch({
+  //     type: 'rx-boolean', mesh, deps: [m1.name, m2.name]
+  //   })
+
+
+  //   sc.render()
+  //   forceUpdate()
+
+  // }
+
   const addSketch = () => {
     const sketch = sc.addSketch()
     if (!sketch) {

src/react/tree.jsx

@@ -11,7 +11,7 @@ export const Tree = () => {
   const fileHandle = useSelector(state => state.ui.fileHandle)
 
   return <div className='sideNav flex flex-col bg-gray-800'>
-    <div className='w-16 text-gray-50 h-9 text-lg mx-1 border-0 flex items-center focus:outline-none bg-transparent'>
+    <div className='w-full text-gray-50 h-9 text-lg mx-1 border-0 flex items-center focus:outline-none bg-transparent'>
       {fileHandle ? fileHandle.name.replace(/\.[^/.]+$/, "") : 'untitled'}
     </div>
     {treeEntries.allIds.map((entId, idx) => (

src/shared.js

@@ -7,8 +7,8 @@ const _vec3 = new THREE.Vector3()
 
 
 const raycaster = new THREE.Raycaster();
-raycaster.params.Line.threshold = 0.1;
+raycaster.params.Line.threshold = 1;
-raycaster.params.Points.threshold = 0.1;
+raycaster.params.Points.threshold = 1;
 
 
 const color = {

todo.txt

@@ -38,6 +38,10 @@ file save, stl export// done
 seperate scene from init logic only init cam and rendere // not an issue , ended up just splicing (1)
 add download button, different from save button // done
 
+- dimension to origin vs ordinate dimensioninging
+- increased design payload handling
+
+
 -unable cancel out of new sketches  //fixed seemingly
 -unable to delete arc // fixed seemingly
 

wasm/slvs.h

@@ -397,6 +397,35 @@ static inline Slvs_Constraint Slvs_MakeConstraint(Slvs_hConstraint h,
     return r;
 }
 
+
+static inline Slvs_Constraint Slvs_MakeConstraint_Alt(Slvs_hConstraint h,
+                                                  Slvs_hGroup group,
+                                                  int type,
+                                                  Slvs_hEntity wrkpl,
+                                                  double valA,
+                                                  Slvs_hEntity ptA,
+                                                  Slvs_hEntity ptB,
+                                                  Slvs_hEntity entityA,
+                                                  Slvs_hEntity entityB,
+                                                  int other, int other2
+                                                  )
+{
+    Slvs_Constraint r;
+    memset(&r, 0, sizeof(r));
+    r.h = h;
+    r.group = group;
+    r.type = type;
+    r.wrkpl = wrkpl;
+    r.valA = valA;
+    r.ptA = ptA;
+    r.ptB = ptB;
+    r.entityA = entityA;
+    r.entityB = entityB;
+    r.other = other;
+    r.other2 = other2;
+    return r;
+}
+
 #ifdef __cplusplus
 }
 #endif

wasm/solver.c

@@ -3,7 +3,7 @@
  * initial guesses for their positions, and then constrain them. The solver
  * calculates their new positions, in order to satisfy the constraints.
  *
- * Copyright 2008-2013 Jonathan Westhues.
+ * Copyright -2008-2013 Jonathan Westhues.
  *---------------------------------------------------------------------------*/
 #ifdef WIN32
 #include <windows.h>
@@ -43,9 +43,9 @@ int solver(int nPts, float *p_ptr, int nConst, float *c_ptr, int nLinks, float *
   /* First, we create our workplane. Its origin corresponds to the origin
      * of our base frame (x y z) = (0 0 0) */
   sys.param[sys.params++] = Slvs_MakeParam(1, g, 0.0);
-  sys.param[sys.params++] = Slvs_MakeParam(2, g, 0.0);
+  sys.param[sys.params++] = Slvs_MakeParam(2, g, 1.0);
-  sys.param[sys.params++] = Slvs_MakeParam(3, g, 0.0);
+  sys.param[sys.params++] = Slvs_MakeParam(3, g, -1.0);
-  sys.entity[sys.entities++] = Slvs_MakePoint3d(101, g, 1, 2, 3);
+  sys.entity[sys.entities++] = Slvs_MakePoint3d(-101, g, 1, 1, 1);
   /* and it is parallel to the xy plane, so it has basis vectors (1 0 0)
      * and (0 1 0).  */
   Slvs_MakeQuaternion(1, 0, 0,
@@ -54,9 +54,9 @@ int solver(int nPts, float *p_ptr, int nConst, float *c_ptr, int nLinks, float *
   sys.param[sys.params++] = Slvs_MakeParam(5, g, qx);
   sys.param[sys.params++] = Slvs_MakeParam(6, g, qy);
   sys.param[sys.params++] = Slvs_MakeParam(7, g, qz);
-  sys.entity[sys.entities++] = Slvs_MakeNormal3d(102, g, 4, 5, 6, 7);
+  sys.entity[sys.entities++] = Slvs_MakeNormal3d(-102, g, 4, 5, 6, 7);
 
-  sys.entity[sys.entities++] = Slvs_MakeWorkplane(200, g, 101, 102);
+  sys.entity[sys.entities++] = Slvs_MakeWorkplane(-200, g, -101, -102);
 
   /* Now create a second group. We'll solve group 2, while leaving group 1
      * constant; so the workplane that we've created will be locked down,
@@ -65,9 +65,15 @@ int solver(int nPts, float *p_ptr, int nConst, float *c_ptr, int nLinks, float *
   /* These points are represented by their coordinates (u v) within the
      * workplane, so they need only two parameters each. */
 
+  sys.entity[sys.entities++] = Slvs_MakePoint2d(-103, g, -200, 1, 1);
+  sys.entity[sys.entities++] = Slvs_MakePoint2d(-104, g, -200, 1, 3);
+  sys.entity[sys.entities++] = Slvs_MakePoint2d(-105, g, -200, 3, 1);
+  sys.entity[sys.entities++] = Slvs_MakeLineSegment(-106, g,
+                                                    -200, -103, -104); //y-axis
+  sys.entity[sys.entities++] = Slvs_MakeLineSegment(-107, g,
+                                                    -200, -103, -105); //x-axis
+
   Slvs_hParam ph = 11;
-  Slvs_hParam vh = 301, vh_s = 301;
-  Slvs_hParam lh = 400, lh_s = 400;
 
   float *buf_pt_start = p_ptr;
   int p_start = sys.params;
@@ -81,7 +87,7 @@ int solver(int nPts, float *p_ptr, int nConst, float *c_ptr, int nLinks, float *
 
     sys.param[sys.params++] = Slvs_MakeParam(ph++, g, (float)*p_ptr++);
     sys.param[sys.params++] = Slvs_MakeParam(ph++, g, (float)*p_ptr++);
-    sys.entity[sys.entities++] = Slvs_MakePoint2d(i, g, 200, ph - 1, ph - 2);
+    sys.entity[sys.entities++] = Slvs_MakePoint2d(i, g, -200, ph - 1, ph - 2);
     p_ptr += 1;
   }
 
@@ -92,10 +98,10 @@ int solver(int nPts, float *p_ptr, int nConst, float *c_ptr, int nLinks, float *
     {
     case 0:
       sys.entity[sys.entities++] = Slvs_MakeLineSegment((int)*(l_ptr + 2), g,
-                                                        200, (int)*l_ptr, (int)*(l_ptr + 1));
+                                                        -200, (int)*l_ptr, (int)*(l_ptr + 1));
       break;
     case 1:
-      sys.entity[sys.entities++] = Slvs_MakeArcOfCircle((int)*(l_ptr + 3), g, 200, 102,
+      sys.entity[sys.entities++] = Slvs_MakeArcOfCircle((int)*(l_ptr + 3), g, -200, -102,
                                                         (int)*(l_ptr + 2), (int)*(l_ptr), (int)*(l_ptr + 1));
       break;
     default:
@@ -109,19 +115,30 @@ int solver(int nPts, float *p_ptr, int nConst, float *c_ptr, int nLinks, float *
   sys.constraint[sys.constraints++] = Slvs_MakeConstraint(
       c_pre++, 2,
       SLVS_C_POINTS_COINCIDENT,
-      200,
+      -200,
       -1,
-      101, geomStartIdx, -1, -1);
+      -101, geomStartIdx, -1, -1);
 
-
+  for (int c_id = c_pre; c_id < c_pre + nConst; c_id++, c_ptr += 8)
-  for (int c_id=c_pre; c_id < c_pre + nConst; c_id++, c_ptr += 6)
   {
-    sys.constraint[sys.constraints++] = Slvs_MakeConstraint(
+    if ((int)*c_ptr >= 34)
+    {
+      sys.constraint[sys.constraints++] = Slvs_MakeConstraint_Alt(
+          c_id, g,
+          30 + 100000,
+          -200,
+          *(c_ptr + 1),
+          (int)*(c_ptr + 2), (int)*(c_ptr + 3), (int)*c_ptr == 34 ? -106: -107, (int)*(c_ptr + 5), (int)*(c_ptr + 6), (int)*(c_ptr + 7));
+    }
+    else
+    {
+      sys.constraint[sys.constraints++] = Slvs_MakeConstraint_Alt(
           c_id, g,
           (int)*c_ptr + 100000,
-        200,
+          -200,
           *(c_ptr + 1),
-        (int)*(c_ptr + 2), (int)*(c_ptr + 3), (int)*(c_ptr + 4), (int)*(c_ptr + 5));
+          (int)*(c_ptr + 2), (int)*(c_ptr + 3), (int)*(c_ptr + 4), (int)*(c_ptr + 5), (int)*(c_ptr + 6), (int)*(c_ptr + 7));
+    }
   }
 
   /* And solve. */
@@ -174,7 +191,6 @@ int main(int argc, char *argv[])
   sys.failed = CheckMalloc(500 * sizeof(sys.failed[0]));
   sys.faileds = 500;
 
-
   // printf("hello\n");
   return 0;
 }