src/Gisplay/Maps/ProportionalSymbolsMap.js

import { Map } from './Map';
import { Legend } from '../Legend';

/**
 * Proportional Symbols Map implementation.
 */
export class ProportionalSymbolsMap extends Map {

    constructor(bgmap, geometry, options) {
        super(bgmap, geometry, options);
        this.geometry = geometry;
        this.aesthetics = new Array();
        this.legend; //@Rui TODO WUT
        this.annotations = new Array();
        this.map = bgmap;
        this.id = mapcount++;
        this.type = 'PS';
        this.loadOptions(options, bgmap);
        this.dynamic = options.sizeByClass == undefined ? true : !options.sizeByClass;
        if (this.dynamic == true) {
            this.maxpointsize = options.maxPointSize == undefined ? 10.0 : parseFloat(options.maxPointSize);
            this.minpointsize = options.minPointSize == undefined ? 1.0 : parseFloat(options.minPointSize);
        }
        maps.push(this);
        this.initialize();
    }

    draw() {
        this.clear();
        if (this.dynamic == false)
            for (var i = this.aesthetics.length - 1; i >= 0; i--) {
                if (this.aesthetics[i].enabled == true)
                    this.drawPoints(this.aesthetics[i]);
            }
        else {
            for (var i = this.aesthetics.length - 1; i >= 0; i--) {
                if (this.aesthetics[i].enabled == true)
                    this.drawProporcionalPoints(this.aesthetics[i]);
            }
        }
    }

    buildLegend() {
        this.legend = new Legend(this.id, this.legendTitle);
        if (this.aesthetics.length == 1)
            this.legend.insertProportionalSymbols(this.aesthetics[0], this, this.numberOfLegendItems);
        else
            for (let i = this.aesthetics.length - 1; i >= 0; i--)
                if (i == 0)
                    this.legend.insertProportionalSymbols(this.aesthetics[i], this, 2);
                else
                    this.legend.insertProportionalSymbols(this.aesthetics[i], this, 1);
        this.legend.insertLegend(this.map);
    }

    defaults(defaultid) {
        const options = {};
        switch (defaultid) {
            case 1:
                options.maxPointSize = 60;
                options.minPointSize = 5;
                options.colorScheme = ['green', 'red', 'blue'];
                options.numberOfClasses = 1;
                break;
            default:
                break;
        }
        return options;
    }

}