axis3d/core/geometry.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Geometry = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _boundPoints = require('bound-points');

var _boundPoints2 = _interopRequireDefault(_boundPoints);

var _defined = require('defined');

var _defined2 = _interopRequireDefault(_defined);

var _arrayFlatten = require('array-flatten');

var _arrayFlatten2 = _interopRequireDefault(_arrayFlatten);

var _meshReindex = require('mesh-reindex');

var _meshReindex2 = _interopRequireDefault(_meshReindex);

var _unindexMesh = require('unindex-mesh');

var _unindexMesh2 = _interopRequireDefault(_unindexMesh);

var _normals = require('normals');

var _normals2 = _interopRequireDefault(_normals);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Geometry = exports.Geometry = function () {
  function Geometry() {
    var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

    _classCallCheck(this, Geometry);

    var complex = {};
    if (opts.positions) {
      complex = opts;
    } else {
      complex = opts.complex;
    }
    var flatten = (0, _defined2.default)(opts.flatten, complex.flatten, false);
    Object.defineProperty(this, '_complex', { enumerable: false, value: {} });
    this.flatten = Boolean(flatten);
    this.complex = complex || null;
  }

  _createClass(Geometry, [{
    key: 'computeBoundingBox',
    value: function computeBoundingBox() {
      return (0, _boundPoints2.default)(this.positions);
    }
  }, {
    key: 'complex',
    set: function set(complex) {
      if (complex instanceof Geometry) {
        complex = complex.complex;
      }
      if (complex) {
        if (complex.positions) {
          ensure3D(complex.positions);
        }
        if (complex.normals) {
          ensure3D(complex.normals);
        }
        if (this.flatten && complex.cells) {
          var cells = complex.cells.map(function (cell) {
            return cell.slice();
          });
          var flattened = (0, _meshReindex2.default)((0, _unindexMesh2.default)(complex.positions, cells));
          try {
            complex.normals = _normals2.default.vertexNormals(flattened.cells, flattened.positions);
          } catch (e) {
            console.warn("Unable to compute vertex normals.");
          }
          Object.assign(complex, flattened);
        } else if (complex.positions && !complex.cells) {
          Object.assign(complex, (0, _meshReindex2.default)((0, _arrayFlatten2.default)(complex.positions)));
        }

        if (null == complex.normals && complex.positions && complex.cells) {
          try {
            complex.normals = _normals2.default.vertexNormals(complex.cells, complex.positions);
          } catch (e) {
            console.warn("Unable to compute vertex normals.");
          }
        }
      }

      function ensure3D(nodes) {
        var _iteratorNormalCompletion = true;
        var _didIteratorError = false;
        var _iteratorError = undefined;

        try {
          for (var _iterator = nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
            var node = _step.value;

            for (var i = 0; i < 3; ++i) {
              if (null == node[i]) {
                node[i] = 0;
              }
            }
          }
        } catch (err) {
          _didIteratorError = true;
          _iteratorError = err;
        } finally {
          try {
            if (!_iteratorNormalCompletion && _iterator.return) {
              _iterator.return();
            }
          } finally {
            if (_didIteratorError) {
              throw _iteratorError;
            }
          }
        }
      }

      Object.assign(this._complex, complex);
      return complex;
    },
    get: function get() {
      return this._complex || null;
    }
  }, {
    key: 'positions',
    get: function get() {
      return this.complex ? this.complex.positions : null;
    }
  }, {
    key: 'normals',
    get: function get() {
      return this.complex ? this.complex.normals : null;
    }
  }, {
    key: 'uvs',
    get: function get() {
      return this.complex ? this.complex.uvs : null;
    }
  }, {
    key: 'cells',
    get: function get() {
      return this.complex ? this.complex.cells : null;
    }
  }]);

  return Geometry;
}();
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