dxf
Version:
DXF parser for node/browser
105 lines (103 loc) • 4.33 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _vecks = require("vecks");
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = null == arr ? null : "undefined" != typeof Symbol && arr[Symbol.iterator] || arr["@@iterator"]; if (null != _i) { var _s, _e, _x, _r, _arr = [], _n = !0, _d = !1; try { if (_x = (_i = _i.call(arr)).next, 0 === i) { if (Object(_i) !== _i) return; _n = !1; } else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0); } catch (err) { _d = !0, _e = err; } finally { try { if (!_n && null != _i["return"] && (_r = _i["return"](), Object(_r) !== _r)) return; } finally { if (_d) throw _e; } } return _arr; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
/**
* Transform the bounding box and the SVG element by the given
* transforms. The <g> element are created in reverse transform
* order and the bounding box in the given order.
*/
var _default = function _default(bbox, element, transforms) {
var transformedElement = '';
var matrices = transforms.map(function (transform) {
// Create the transformation matrix
var tx = transform.x || 0;
var ty = transform.y || 0;
var sx = transform.scaleX || 1;
var sy = transform.scaleY || 1;
var angle = (transform.rotation || 0) / 180 * Math.PI;
var cos = Math.cos,
sin = Math.sin;
var a, b, c, d, e, f;
// In DXF an extrusionZ value of -1 denote a tranform around the Y axis.
if (transform.extrusionZ === -1) {
a = -sx * cos(angle);
b = sx * sin(angle);
c = sy * sin(angle);
d = sy * cos(angle);
e = -tx;
f = ty;
} else {
a = sx * cos(angle);
b = sx * sin(angle);
c = -sy * sin(angle);
d = sy * cos(angle);
e = tx;
f = ty;
}
return [a, b, c, d, e, f];
});
// Only transform the bounding box is it is valid (i.e. not Infinity)
var transformedBBox = new _vecks.Box2();
if (bbox.valid) {
var bboxPoints = [{
x: bbox.min.x,
y: bbox.min.y
}, {
x: bbox.max.x,
y: bbox.min.y
}, {
x: bbox.max.x,
y: bbox.max.y
}, {
x: bbox.min.x,
y: bbox.max.y
}];
matrices.forEach(function (_ref) {
var _ref2 = _slicedToArray(_ref, 6),
a = _ref2[0],
b = _ref2[1],
c = _ref2[2],
d = _ref2[3],
e = _ref2[4],
f = _ref2[5];
bboxPoints = bboxPoints.map(function (point) {
return {
x: point.x * a + point.y * c + e,
y: point.x * b + point.y * d + f
};
});
});
transformedBBox = bboxPoints.reduce(function (acc, point) {
return acc.expandByPoint(point);
}, new _vecks.Box2());
}
matrices.reverse();
matrices.forEach(function (_ref3) {
var _ref4 = _slicedToArray(_ref3, 6),
a = _ref4[0],
b = _ref4[1],
c = _ref4[2],
d = _ref4[3],
e = _ref4[4],
f = _ref4[5];
transformedElement += "<g transform=\"matrix(".concat(a, " ").concat(b, " ").concat(c, " ").concat(d, " ").concat(e, " ").concat(f, ")\">");
});
transformedElement += element;
matrices.forEach(function (transform) {
transformedElement += '</g>';
});
return {
bbox: transformedBBox,
element: transformedElement
};
};
exports["default"] = _default;