@geogirafe/lib-geoportal/components/map/tools/cogmanager.js

GeoGirafe is a flexible application to build online geoportals.

import TileLayer from 'ol/layer/WebGLTile.js';
import GeoTIFF from 'ol/source/GeoTIFF.js';
class CogManager {
    map;
    basemapLayers = [];
    activeLayers = {};
    constructor(map) {
        this.map = map;
    }
    removeAllBasemapLayers() {
        this.basemapLayers.forEach((basemap) => {
            this.map.removeLayer(basemap);
        });
        this.basemapLayers = [];
    }
    addBasemapLayer(layer) {
        const source = new GeoTIFF({
            sources: [{ url: layer.source }]
        });
        const olayer = new TileLayer({ source: source });
        this.basemapLayers.push(olayer);
        // For basemap, set a minimal number (arbitrary defined to less than -5000)
        olayer.setZIndex(-5000 - layer.order);
        this.map.addLayer(olayer);
    }
    addLayer(layer) {
        const source = new GeoTIFF({
            sources: [{ url: layer.source }]
        });
        const olayer = new TileLayer({ source: source });
        this.map.addLayer(olayer);
        this.activeLayers[layer.treeItemId] = { layer: layer, olayer: olayer };
    }
    removeLayer(layer) {
        const olayer = this.activeLayers[layer.treeItemId].olayer;
        delete this.activeLayers[layer.treeItemId];
        this.map.removeLayer(olayer);
    }
}
export default CogManager;