ThreeBSP.js 源码下载

梦里梦外; 2021-11-22 07:08 409阅读 0赞

通过git上的ThreeBSP.coffee转换为js代码，有需要的拿走不谢。

// Generated by CoffeeScript 1.12.7
    (function() {
      var BACK, COPLANAR, EPSILON, FRONT, SPANNING, Timelimit, returning,
        bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
        slice = [].slice,
        extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
        hasProp = {}.hasOwnProperty;
    
      EPSILON = 1e-5;
    
      COPLANAR = 0;
    
      FRONT = 1;
    
      BACK = 2;
    
      SPANNING = 3;
    
      returning = function(value, fn) {
        fn();
        return value;
      };
    
      Timelimit = (function() {
        function Timelimit(timeout, progress) {
          this.timeout = timeout;
          this.progress = progress;
          this.doTask = bind(this.doTask, this);
          this.finish = bind(this.finish, this);
          this.start = bind(this.start, this);
          this.check = bind(this.check, this);
          "NOTHING";
        }
    
        Timelimit.prototype.check = function() {
          var elapsed;
          if (this.started == null) {
            return;
          }
          return returning((elapsed = Date.now() - this.started), (function(_this) {
            return function() {
              var ref, ref1, ref2;
              if ((ref = elapsed >= _this.timeout) != null ? ref : 2e308) {
                throw new Error("Timeout reached: " + elapsed + "/" + _this.timeout + ", " + ((ref1 = _this.tasks) != null ? ref1 : 0) + " tasks unfinished " + ((ref2 = _this.done) != null ? ref2 : 0) + " finished.");
              }
            };
          })(this));
        };
    
        Timelimit.prototype.start = function() {
          if (this.started == null) {
            this.started = Date.now();
          }
          if (this.tasks == null) {
            this.tasks = 0;
          }
          if (this.total == null) {
            this.total = 0;
          }
          this.total += 1;
          this.tasks += 1;
          return this.check();
        };
    
        Timelimit.prototype.finish = function() {
          var elapsed;
          if ((this.tasks != null) && this.tasks < 1) {
            throw new Error("Finished more tasks than started");
          }
          this.tasks -= 1;
          elapsed = this.check();
          if (this.done == null) {
            this.done = 0;
          }
          this.done += 1;
          if (this.progress != null) {
            this.progress(this.done, this.total);
          }
          if (this.tasks === 0) {
            "Finished " + this.done + " tasks in " + elapsed + "/" + this.timeout + " ms";
            return this.started = this.done = this.total = void 0;
          }
        };
    
        Timelimit.prototype.doTask = function(block) {
          var result;
          this.start();
          result = block();
          this.finish();
          return result;
        };
    
        return Timelimit;
    
      })();
    
      window.ThreeBSP = (function() {
        function ThreeBSP(treeIsh, matrix1, options) {
          var base, ref, ref1, ref2, ref3;
          this.matrix = matrix1;
          this.options = options != null ? options : {};
          this.intersect = bind(this.intersect, this);
          this.union = bind(this.union, this);
          this.subtract = bind(this.subtract, this);
          this.toGeometry = bind(this.toGeometry, this);
          this.toMesh = bind(this.toMesh, this);
          this.toTree = bind(this.toTree, this);
          this.withTimer = bind(this.withTimer, this);
          if ((this.matrix != null) && !(this.matrix instanceof THREE.Matrix4)) {
            this.options = this.matrix;
            this.matrix = void 0;
          }
          if (this.options == null) {
            this.options = {};
          }
          if (this.matrix == null) {
            this.matrix = new THREE.Matrix4();
          }
          if ((base = this.options).timer == null) {
            base.timer = new Timelimit((ref = (ref1 = this.options.timer) != null ? ref1.timeout : void 0) != null ? ref : this.options.timeout, (ref2 = (ref3 = this.options.timer) != null ? ref3.progress : void 0) != null ? ref2 : this.options.progress);
          }
          this.tree = this.toTree(treeIsh);
        }
    
        ThreeBSP.prototype.withTimer = function(new_timer, block) {
          var old_timer;
          old_timer = this.options.timer;
          try {
            this.options.timer = new_timer;
            return block();
          } finally {
            this.options.timer = old_timer;
          }
        };
    
        ThreeBSP.prototype.toTree = function(treeIsh) {
          var face, fn1, geometry, i, k, len, polygons, ref;
          if (treeIsh instanceof ThreeBSP.Node) {
            return treeIsh;
          }
          polygons = [];
          geometry = treeIsh instanceof THREE.Geometry ? treeIsh : treeIsh instanceof THREE.Mesh ? (treeIsh.updateMatrix(), this.matrix = treeIsh.matrix.clone(), treeIsh.geometry) : void 0;
          ref = geometry.faces;
          fn1 = (function(_this) {
            return function(face, i) {
              var faceVertexUvs, idx, l, len1, polygon, ref1, ref2, vIndex, vName, vertex;
              faceVertexUvs = (ref1 = geometry.faceVertexUvs) != null ? ref1[0][i] : void 0;
              if (faceVertexUvs == null) {
                faceVertexUvs = [new THREE.Vector2(), new THREE.Vector2(), new THREE.Vector2(), new THREE.Vector2()];
              }
              polygon = new ThreeBSP.Polygon();
              ref2 = ['a', 'b', 'c', 'd'];
              for (vIndex = l = 0, len1 = ref2.length; l < len1; vIndex = ++l) {
                vName = ref2[vIndex];
                if ((idx = face[vName]) != null) {
                  vertex = geometry.vertices[idx];
                  vertex = new ThreeBSP.Vertex(vertex.x, vertex.y, vertex.z, face.vertexNormals[0], new THREE.Vector2(faceVertexUvs[vIndex].x, faceVertexUvs[vIndex].y));
                  vertex.applyMatrix4(_this.matrix);
                  polygon.vertices.push(vertex);
                }
              }
              return polygons.push(polygon.calculateProperties());
            };
          })(this);
          for (i = k = 0, len = ref.length; k < len; i = ++k) {
            face = ref[i];
            fn1(face, i);
          }
          return new ThreeBSP.Node(polygons, this.options);
        };
    
        ThreeBSP.prototype.toMesh = function(material) {
          if (material == null) {
            material = new THREE.MeshNormalMaterial();
          }
          return this.options.timer.doTask((function(_this) {
            return function() {
              var geometry, mesh;
              geometry = _this.toGeometry();
              return returning((mesh = new THREE.Mesh(geometry, material)), function() {
                mesh.position.setFromMatrixPosition(_this.matrix);
                return mesh.rotation.setFromRotationMatrix(_this.matrix);
              });
            };
          })(this));
        };
    
        ThreeBSP.prototype.toGeometry = function() {
          return this.options.timer.doTask((function(_this) {
            return function() {
              var geometry, matrix;
              matrix = new THREE.Matrix4().getInverse(_this.matrix);
              return returning((geometry = new THREE.Geometry()), function() {
                var k, len, polygon, ref, results;
                ref = _this.tree.allPolygons();
                results = [];
                for (k = 0, len = ref.length; k < len; k++) {
                  polygon = ref[k];
                  results.push(_this.options.timer.doTask(function() {
                    var face, idx, l, polyVerts, ref1, results1, v, vertUvs, verts;
                    polyVerts = (function() {
                      var l, len1, ref1, results1;
                      ref1 = polygon.vertices;
                      results1 = [];
                      for (l = 0, len1 = ref1.length; l < len1; l++) {
                        v = ref1[l];
                        results1.push(v.clone().applyMatrix4(matrix));
                      }
                      return results1;
                    })();
                    results1 = [];
                    for (idx = l = 2, ref1 = polyVerts.length; 2 <= ref1 ? l < ref1 : l > ref1; idx = 2 <= ref1 ? ++l : --l) {
                      verts = [polyVerts[0], polyVerts[idx - 1], polyVerts[idx]];
                      vertUvs = (function() {
                        var len1, m, ref2, ref3, results2;
                        results2 = [];
                        for (m = 0, len1 = verts.length; m < len1; m++) {
                          v = verts[m];
                          results2.push(new THREE.Vector2((ref2 = v.uv) != null ? ref2.x : void 0, (ref3 = v.uv) != null ? ref3.y : void 0));
                        }
                        return results2;
                      })();
                      face = (function(func, args, ctor) {
                        ctor.prototype = func.prototype;
                        var child = new ctor, result = func.apply(child, args);
                        return Object(result) === result ? result : child;
                      })(THREE.Face3, slice.call((function() {
                        var len1, m, results2;
                        results2 = [];
                        for (m = 0, len1 = verts.length; m < len1; m++) {
                          v = verts[m];
                          results2.push(geometry.vertices.push(v) - 1);
                        }
                        return results2;
                      })()).concat([polygon.normal.clone()]), function(){});
                      geometry.faces.push(face);
                      results1.push(geometry.faceVertexUvs[0].push(vertUvs));
                    }
                    return results1;
                  }));
                }
                return results;
              });
            };
          })(this));
        };
    
        ThreeBSP.prototype.subtract = function(other) {
          return this.options.timer.doTask((function(_this) {
            return function() {
              return other.withTimer(_this.options.timer, function() {
                var ref, them, us;
                ref = [_this.tree.clone(), other.tree.clone()], us = ref[0], them = ref[1];
                us.invert().clipTo(them);
                them.clipTo(us).invert().clipTo(us).invert();
                return new ThreeBSP(us.build(them.allPolygons()).invert(), _this.matrix, _this.options);
              });
            };
          })(this));
        };
    
        ThreeBSP.prototype.union = function(other) {
          return this.options.timer.doTask((function(_this) {
            return function() {
              return other.withTimer(_this.options.timer, function() {
                var ref, them, us;
                ref = [_this.tree.clone(), other.tree.clone()], us = ref[0], them = ref[1];
                us.clipTo(them);
                them.clipTo(us).invert().clipTo(us).invert();
                return new ThreeBSP(us.build(them.allPolygons()), _this.matrix, _this.options);
              });
            };
          })(this));
        };
    
        ThreeBSP.prototype.intersect = function(other) {
          return this.options.timer.doTask((function(_this) {
            return function() {
              return other.withTimer(_this.options.timer, function() {
                var ref, them, us;
                ref = [_this.tree.clone(), other.tree.clone()], us = ref[0], them = ref[1];
                them.clipTo(us.invert()).invert().clipTo(us.clipTo(them));
                return new ThreeBSP(us.build(them.allPolygons()).invert(), _this.matrix, _this.options);
              });
            };
          })(this));
        };
    
        return ThreeBSP;
    
      })();
    
      ThreeBSP.Vertex = (function(superClass) {
        extend(Vertex, superClass);
    
        function Vertex(x, y, z, normal, uv) {
          this.normal = normal != null ? normal : new THREE.Vector3();
          this.uv = uv != null ? uv : new THREE.Vector2();
          this.interpolate = bind(this.interpolate, this);
          this.lerp = bind(this.lerp, this);
          Vertex.__super__.constructor.call(this, x, y, z);
        }
    
        Vertex.prototype.clone = function() {
          return new ThreeBSP.Vertex(this.x, this.y, this.z, this.normal.clone(), this.uv.clone());
        };
    
        Vertex.prototype.lerp = function(v, alpha) {
          return returning(Vertex.__super__.lerp.apply(this, arguments), (function(_this) {
            return function() {
              _this.uv.add(v.uv.clone().sub(_this.uv).multiplyScalar(alpha));
              return _this.normal.lerp(v, alpha);
            };
          })(this));
        };
    
        Vertex.prototype.interpolate = function() {
          var args, ref;
          args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
          return (ref = this.clone()).lerp.apply(ref, args);
        };
    
        return Vertex;
    
      })(THREE.Vector3);
    
      ThreeBSP.Polygon = (function() {
        function Polygon(vertices, normal, w) {
          this.vertices = vertices != null ? vertices : [];
          this.normal = normal;
          this.w = w;
          this.subdivide = bind(this.subdivide, this);
          this.tessellate = bind(this.tessellate, this);
          this.classifySide = bind(this.classifySide, this);
          this.classifyVertex = bind(this.classifyVertex, this);
          this.invert = bind(this.invert, this);
          this.clone = bind(this.clone, this);
          this.calculateProperties = bind(this.calculateProperties, this);
          if (this.vertices.length) {
            this.calculateProperties();
          }
        }
    
        Polygon.prototype.calculateProperties = function() {
          return returning(this, (function(_this) {
            return function() {
              var a, b, c, ref;
              ref = _this.vertices, a = ref[0], b = ref[1], c = ref[2];
              _this.normal = b.clone().sub(a).cross(c.clone().sub(a)).normalize();
              return _this.w = _this.normal.clone().dot(a);
            };
          })(this));
        };
    
        Polygon.prototype.clone = function() {
          var v;
          return new ThreeBSP.Polygon((function() {
            var k, len, ref, results;
            ref = this.vertices;
            results = [];
            for (k = 0, len = ref.length; k < len; k++) {
              v = ref[k];
              results.push(v.clone());
            }
            return results;
          }).call(this), this.normal.clone(), this.w);
        };
    
        Polygon.prototype.invert = function() {
          return returning(this, (function(_this) {
            return function() {
              _this.normal.multiplyScalar(-1);
              _this.w *= -1;
              return _this.vertices.reverse();
            };
          })(this));
        };
    
        Polygon.prototype.classifyVertex = function(vertex) {
          var side;
          side = this.normal.dot(vertex) - this.w;
          switch (false) {
            case !(side < -EPSILON):
              return BACK;
            case !(side > EPSILON):
              return FRONT;
            default:
              return COPLANAR;
          }
        };
    
        Polygon.prototype.classifySide = function(polygon) {
          var back, front, k, len, ref, ref1, tally, v;
          ref = [0, 0], front = ref[0], back = ref[1];
          tally = (function(_this) {
            return function(v) {
              switch (_this.classifyVertex(v)) {
                case FRONT:
                  return front += 1;
                case BACK:
                  return back += 1;
              }
            };
          })(this);
          ref1 = polygon.vertices;
          for (k = 0, len = ref1.length; k < len; k++) {
            v = ref1[k];
            tally(v);
          }
          if (front > 0 && back === 0) {
            return FRONT;
          }
          if (front === 0 && back > 0) {
            return BACK;
          }
          if ((front === back && back === 0)) {
            return COPLANAR;
          }
          return SPANNING;
        };
    
        Polygon.prototype.tessellate = function(poly) {
          var b, count, f, i, j, k, len, polys, ref, ref1, ref2, t, ti, tj, v, vi, vj;
          ref = {
            f: [],
            b: [],
            count: poly.vertices.length
          }, f = ref.f, b = ref.b, count = ref.count;
          if (this.classifySide(poly) !== SPANNING) {
            return [poly];
          }
          ref1 = poly.vertices;
          for (i = k = 0, len = ref1.length; k < len; i = ++k) {
            vi = ref1[i];
            vj = poly.vertices[(j = (i + 1) % count)];
            ref2 = (function() {
              var l, len1, ref2, results;
              ref2 = [vi, vj];
              results = [];
              for (l = 0, len1 = ref2.length; l < len1; l++) {
                v = ref2[l];
                results.push(this.classifyVertex(v));
              }
              return results;
            }).call(this), ti = ref2[0], tj = ref2[1];
            if (ti !== BACK) {
              f.push(vi);
            }
            if (ti !== FRONT) {
              b.push(vi);
            }
            if ((ti | tj) === SPANNING) {
              t = (this.w - this.normal.dot(vi)) / this.normal.dot(vj.clone().sub(vi));
              v = vi.interpolate(vj, t);
              f.push(v);
              b.push(v);
            }
          }
          return returning((polys = []), (function(_this) {
            return function() {
              if (f.length >= 3) {
                polys.push(new ThreeBSP.Polygon(f));
              }
              if (b.length >= 3) {
                return polys.push(new ThreeBSP.Polygon(b));
              }
            };
          })(this));
        };
    
        Polygon.prototype.subdivide = function(polygon, coplanar_front, coplanar_back, front, back) {
          var k, len, poly, ref, results, side;
          ref = this.tessellate(polygon);
          results = [];
          for (k = 0, len = ref.length; k < len; k++) {
            poly = ref[k];
            side = this.classifySide(poly);
            switch (side) {
              case FRONT:
                results.push(front.push(poly));
                break;
              case BACK:
                results.push(back.push(poly));
                break;
              case COPLANAR:
                if (this.normal.dot(poly.normal) > 0) {
                  results.push(coplanar_front.push(poly));
                } else {
                  results.push(coplanar_back.push(poly));
                }
                break;
              default:
                throw new Error("BUG: Polygon of classification " + side + " in subdivision");
            }
          }
          return results;
        };
    
        return Polygon;
    
      })();
    
      ThreeBSP.Node = (function() {
        Node.prototype.clone = function() {
          var node;
          return returning((node = new ThreeBSP.Node(this.options)), (function(_this) {
            return function() {
              var ref;
              node.divider = (ref = _this.divider) != null ? ref.clone() : void 0;
              node.polygons = _this.options.timer.doTask(function() {
                var k, len, p, ref1, results;
                ref1 = _this.polygons;
                results = [];
                for (k = 0, len = ref1.length; k < len; k++) {
                  p = ref1[k];
                  results.push(p.clone());
                }
                return results;
              });
              node.front = _this.options.timer.doTask(function() {
                var ref1;
                return (ref1 = _this.front) != null ? ref1.clone() : void 0;
              });
              return node.back = _this.options.timer.doTask(function() {
                var ref1;
                return (ref1 = _this.back) != null ? ref1.clone() : void 0;
              });
            };
          })(this));
        };
    
        function Node(polygons, options) {
          this.options = options != null ? options : {};
          this.clipTo = bind(this.clipTo, this);
          this.clipPolygons = bind(this.clipPolygons, this);
          this.invert = bind(this.invert, this);
          this.allPolygons = bind(this.allPolygons, this);
          this.isConvex = bind(this.isConvex, this);
          this.build = bind(this.build, this);
          this.clone = bind(this.clone, this);
          if ((polygons != null) && !(polygons instanceof Array)) {
            this.options = polygons;
            polygons = void 0;
          }
          this.polygons = [];
          this.options.timer.doTask((function(_this) {
            return function() {
              if ((polygons != null) && polygons.length) {
                return _this.build(polygons);
              }
            };
          })(this));
        }
    
        Node.prototype.build = function(polygons) {
          return returning(this, (function(_this) {
            return function() {
              var polys, results, side, sides;
              sides = {
                front: [],
                back: []
              };
              if (_this.divider == null) {
                _this.divider = polygons[0].clone();
              }
              _this.options.timer.doTask(function() {
                var k, len, poly, results;
                results = [];
                for (k = 0, len = polygons.length; k < len; k++) {
                  poly = polygons[k];
                  results.push(_this.options.timer.doTask(function() {
                    return _this.divider.subdivide(poly, _this.polygons, _this.polygons, sides.front, sides.back);
                  }));
                }
                return results;
              });
              results = [];
              for (side in sides) {
                if (!hasProp.call(sides, side)) continue;
                polys = sides[side];
                if (polys.length) {
                  if (_this[side] == null) {
                    _this[side] = new ThreeBSP.Node(_this.options);
                  }
                  results.push(_this[side].build(polys));
                } else {
                  results.push(void 0);
                }
              }
              return results;
            };
          })(this));
        };
    
        Node.prototype.isConvex = function(polys) {
          var inner, k, l, len, len1, outer;
          for (k = 0, len = polys.length; k < len; k++) {
            inner = polys[k];
            for (l = 0, len1 = polys.length; l < len1; l++) {
              outer = polys[l];
              if (inner !== outer && outer.classifySide(inner) !== BACK) {
                return false;
              }
            }
          }
          return true;
        };
    
        Node.prototype.allPolygons = function() {
          return this.options.timer.doTask((function(_this) {
            return function() {
              var ref, ref1;
              return _this.polygons.slice().concat(((ref1 = _this.front) != null ? ref1.allPolygons() : void 0) || []).concat(((ref = _this.back) != null ? ref.allPolygons() : void 0) || []);
            };
          })(this));
        };
    
        Node.prototype.invert = function() {
          return returning(this, (function(_this) {
            return function() {
              return _this.options.timer.doTask(function() {
                var flipper, k, l, len, len1, poly, ref, ref1, ref2;
                ref = _this.polygons;
                for (k = 0, len = ref.length; k < len; k++) {
                  poly = ref[k];
                  _this.options.timer.doTask(function() {
                    return poly.invert();
                  });
                }
                ref1 = [_this.divider, _this.front, _this.back];
                for (l = 0, len1 = ref1.length; l < len1; l++) {
                  flipper = ref1[l];
                  _this.options.timer.doTask(function() {
                    return flipper != null ? flipper.invert() : void 0;
                  });
                }
                return ref2 = [_this.back, _this.front], _this.front = ref2[0], _this.back = ref2[1], ref2;
              });
            };
          })(this));
        };
    
        Node.prototype.clipPolygons = function(polygons) {
          return this.options.timer.doTask((function(_this) {
            return function() {
              var back, front, k, len, poly;
              if (!_this.divider) {
                return polygons.slice();
              }
              front = [];
              back = [];
              for (k = 0, len = polygons.length; k < len; k++) {
                poly = polygons[k];
                _this.options.timer.doTask(function() {
                  return _this.divider.subdivide(poly, front, back, front, back);
                });
              }
              if (_this.front) {
                front = _this.front.clipPolygons(front);
              }
              if (_this.back) {
                back = _this.back.clipPolygons(back);
              }
              if (_this.back) {
                return front.concat(back);
              } else {
                return front;
              }
            };
          })(this));
        };
    
        Node.prototype.clipTo = function(node) {
          return returning(this, (function(_this) {
            return function() {
              return _this.options.timer.doTask(function() {
                var ref, ref1;
                _this.polygons = node.clipPolygons(_this.polygons);
                if ((ref = _this.front) != null) {
                  ref.clipTo(node);
                }
                return (ref1 = _this.back) != null ? ref1.clipTo(node) : void 0;
              });
            };
          })(this));
        };
    
        return Node;
    
      })();
    
    }).call(this);