@spearwolf/twopoint5d/lib/map2d/chunk-quad-tree/DataIdsChunk2D.js

Create 2.5D realtime graphics and pixelart with WebGL and three.js

import { DataChunk2D } from './DataChunk2D.js';
import { base64toUint32Arr } from './base64toUint32Arr.js';
export class DataIdsChunk2D extends DataChunk2D {
    #uint32Data;
    constructor(data) {
        super(data);
        this.data = data;
        this.#uint32Data = data.uint32Arr;
    }
    prepareData() {
        const { compression, data } = this.data;
        if (compression) {
            console.error('[Data2DChunk] compression feature is not yet implemented', { compression, data });
            throw new Error('compression is not yet implemented');
        }
        return base64toUint32Arr(data);
    }
    get uint32Arr() {
        if (this.#uint32Data == null) {
            this.#uint32Data = this.prepareData();
        }
        return this.#uint32Data;
    }
    readDataIdAtLocal(x, y) {
        return this.uint32Arr[y * this.data.width + x];
    }
    readDataIdAt(x, y) {
        return this.readDataIdAtLocal(x - this.left, y - this.top);
    }
}
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