@deck.gl/core/dist/utils/tesselator.d.ts

deck.gl core library

import { Buffer } from '@luma.gl/core';
import type { BinaryAttribute } from "../lib/attribute/attribute.js";
import type { TypedArray } from "../types/types.js";
import type { AccessorFunction } from "../types/layer-props.js";
import type { TypedArrayManager } from "./typed-array-manager.js";
type ExternalBuffer = TypedArray | Buffer | BinaryAttribute;
type TesselatorOptions<GeometryT, ExtraOptionsT> = ExtraOptionsT & {
    attributes?: Record<string, any>;
    getGeometry?: AccessorFunction<any, GeometryT>;
    data?: any;
    buffers?: Record<string, ExternalBuffer>;
    geometryBuffer?: ExternalBuffer;
    positionFormat?: 'XY' | 'XYZ';
    dataChanged?: {
        startRow: number;
        endRow?: number;
    }[] | string | false;
    normalize?: boolean;
};
export type GeometryUpdateContext = {
    vertexStart: number;
    indexStart: number;
    geometrySize: number;
    geometryIndex: number;
};
export default abstract class Tesselator<GeometryT, NormalizedGeometryT, ExtraOptionsT> {
    opts: TesselatorOptions<GeometryT, ExtraOptionsT>;
    typedArrayManager: TypedArrayManager;
    indexStarts: number[];
    vertexStarts: number[];
    vertexCount: number;
    instanceCount: number;
    attributes: Record<string, TypedArray | null>;
    protected _attributeDefs: any;
    protected data: any;
    protected getGeometry?: AccessorFunction<any, GeometryT> | null;
    protected geometryBuffer?: ExternalBuffer;
    protected buffers: Record<string, ExternalBuffer>;
    protected positionSize: number;
    protected normalize: boolean;
    constructor(opts: TesselatorOptions<GeometryT, ExtraOptionsT>);
    updateGeometry(opts: TesselatorOptions<GeometryT, ExtraOptionsT>): void;
    updatePartialGeometry({ startRow, endRow }: {
        startRow: number;
        endRow: number;
    }): void;
    /** Convert geometry to a uniform shape */
    protected abstract normalizeGeometry(geometry: GeometryT): NormalizedGeometryT;
    /** Update the positions buffer of a single geometry */
    protected abstract updateGeometryAttributes(geometry: NormalizedGeometryT | null, context: GeometryUpdateContext): any;
    /** Get the number of vertices in a geometry */
    protected abstract getGeometrySize(geometry: NormalizedGeometryT): number;
    protected getGeometryFromBuffer(geometryBuffer: ExternalBuffer): AccessorFunction<any, GeometryT> | null;
    private _allocate;
    /**
     * Visit all objects
     * `data` is expected to be an iterable consistent with the base Layer expectation
     */
    private _forEachGeometry;
    private _rebuildGeometry;
}
export {};
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