101 lines
3.0 KiB
JavaScript
101 lines
3.0 KiB
JavaScript
/* Copyright (c) 2017-2019 Jean-Marc VIGLINO,
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released under the CeCILL-B license (French BSD license)
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(http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.txt).
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*/
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import ol_geom_Polygon from 'ol/geom/Polygon.js'
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import ol_source_BinBase from './BinBase.js'
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import ol_HexGrid from '../render/HexGrid.js'
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/** A source for hexagonal binning
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* @constructor
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* @extends {ol.source.Vector}
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* @param {Object} options ol_source_VectorOptions + ol.HexGridOptions
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* @param {ol.source.Vector} options.source Source
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* @param {number} [options.size] size of the hexagon in map units, default 80000
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* @param {ol.coordinate} [options.origin] origin of the grid, default [0,0]
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* @param {HexagonLayout} [options.layout] grid layout, default pointy
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* @param {function} [options.geometryFunction] Function that takes an ol.Feature as argument and returns an ol.geom.Point as feature's center.
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* @param {function} [options.flatAttributes] Function takes a bin and the features it contains and aggragate the features in the bin attributes when saving
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*/
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var ol_source_HexBin = class olsourceHexBin extends ol_source_BinBase {
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constructor(options) {
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options = options || {};
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super(options);
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/** The HexGrid
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* @type {ol_HexGrid}
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*/
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this._hexgrid = new ol_HexGrid(options);
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// Handle existing features
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this.reset();
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}
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/** Get the hexagon geometry at the coord
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* @param {ol.Coordinate} coord
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* @returns {ol.geom.Polygon}
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* @api
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*/
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getGridGeomAt(coord) {
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var h = this._hexgrid.coord2hex(coord);
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return new ol_geom_Polygon([this._hexgrid.getHexagon(h)]);
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}
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/** Set the inner HexGrid size.
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* @param {number} newSize
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* @param {boolean} noreset If true, reset will not be called (It need to be called through)
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*/
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setSize(newSize, noreset) {
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this._hexgrid.setSize(newSize);
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if (!noreset) {
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this.reset();
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}
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}
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/** Get the inner HexGrid size.
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* @return {number}
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*/
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getSize() {
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return this._hexgrid.getSize();
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}
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/** Set the inner HexGrid layout.
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* @param {HexagonLayout} newLayout
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* @param {boolean} noreset If true, reset will not be called (It need to be called through)
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*/
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setLayout(newLayout, noreset) {
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this._hexgrid.setLayout(newLayout);
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if (!noreset) {
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this.reset();
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}
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}
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/** Get the inner HexGrid layout.
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* @return {HexagonLayout}
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*/
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getLayout() {
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return this._hexgrid.getLayout();
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}
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/** Set the inner HexGrid origin.
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* @param {ol.Coordinate} newLayout
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* @param {boolean} noreset If true, reset will not be called (It need to be called through)
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*/
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setOrigin(newLayout, noreset) {
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this._hexgrid.setOrigin(newLayout);
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if (!noreset) {
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this.reset();
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}
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}
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/** Get the inner HexGrid origin.
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* @return {ol.Coordinate}
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*/
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getOrigin() {
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return this._hexgrid.getOrigin();
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}
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/**
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* Get hexagons without circular dependencies (vs. getFeatures)
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* @return {Array<ol.Feature>}
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*/
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getHexFeatures() {
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return super.getGridFeatures();
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}
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}
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export default ol_source_HexBin
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