wisemapping-frontend/packages/web2d/lib/components/PolyLine.js

/*
 *    Copyright [2015] [wisemapping]
 *
 *   Licensed under WiseMapping Public License, Version 1.0 (the "License").
 *   It is basically the Apache License, Version 2.0 (the "License") plus the
 *   "powered by wisemapping" text requirement on every single page;
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the license at
 *
 *       http://www.wisemapping.org/license
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
const Element = require('./Element').default;
const Toolkit = require('./Toolkit');

const PolyLine = new Class({
  Extends: Element,
  initialize(attributes) {
    const peer = Toolkit.default.createPolyLine();
    const defaultAttributes = {
      strokeColor: 'blue', strokeWidth: 1, strokeStyle: 'solid', strokeOpacity: 1,
    };
    for (const key in attributes) {
      defaultAttributes[key] = attributes[key];
    }
    this.parent(peer, defaultAttributes);
  },

  getType() {
    return 'PolyLine';
  },

  setFrom(x, y) {
    this._peer.setFrom(x, y);
  },

  setTo(x, y) {
    this._peer.setTo(x, y);
  },

  setStyle(style) {
    this._peer.setStyle(style);
  },

  getStyle() {
    return this._peer.getStyle();
  },

  buildCurvedPath(dist, x1, y1, x2, y2) {
    let signx = 1;
    let signy = 1;
    if (x2 < x1) {
      signx = -1;
    }
    if (y2 < y1) {
      signy = -1;
    }

    let path;
    if (Math.abs(y1 - y2) > 2) {
      const middlex = x1 + ((x2 - x1 > 0) ? dist : -dist);
      path = `${x1.toFixed(1)}, ${y1.toFixed(1)} ${middlex.toFixed(1)}, ${y1.toFixed(1)} ${middlex.toFixed(1)}, ${(y2 - 5 * signy).toFixed(1)} ${(middlex + 5 * signx).toFixed(1)}, ${y2.toFixed(1)} ${x2.toFixed(1)}, ${y2.toFixed(1)}`;
    } else {
      path = `${x1.toFixed(1)}, ${y1.toFixed(1)} ${x2.toFixed(1)}, ${y2.toFixed(1)}`;
    }

    return path;
  },

  buildStraightPath(dist, x1, y1, x2, y2) {
    const middlex = x1 + ((x2 - x1 > 0) ? dist : -dist);
    return `${x1}, ${y1} ${middlex}, ${y1} ${middlex}, ${y2} ${x2}, ${y2}`;
  },
});

export default PolyLine;