@openglobus/og/lib/terrain/RgbTerrain.d.ts

[openglobus](https://www.openglobus.org/) is a javascript/typescript library designed to display interactive 3d maps and planets with map tiles, imagery and vector data, markers, and 3D objects. It uses the WebGL technology, open source, and completely fr

import { Extent } from "../Extent";
import { GlobusTerrain } from "./GlobusTerrain";
import type { IGlobusTerrainParams } from "./GlobusTerrain";
import { LonLat } from "../LonLat";
import { Segment } from "../segment/Segment";
import type { TypedArray } from "../utils/shared";
export interface IRgbTerrainParams extends IGlobusTerrainParams {
    equalizeNormals?: boolean;
    key?: string;
    imageSize?: number;
    minHeight?: number;
    resolution?: number;
}
/**
 * @class
 * @extends {GlobusTerrain}
 * @param {string} [name=""] - Terrain provider name.
 * @param {IRgbTerrainParams} [options]:
 * @param {boolean} [equalizeNormals=true] - Make normal equalization on the edges of the tiles.
 * @param {string} [key=""] - API key.
 * @param {number} [imageSize=256] - Image size.
 * @param {number} [minHeight=-10000] - Minimal height for rgb to height converter.
 * @param {number} [resolution=0.1] - Height converter resolution.
 */
declare class RgbTerrain extends GlobusTerrain {
    protected _imageSize: number;
    protected _ctx: CanvasRenderingContext2D;
    protected _imageDataCache: Record<string, Uint8ClampedArray>;
    protected _minHeight: number;
    protected _resolution: number;
    constructor(name: string | null, options?: IRgbTerrainParams);
    static checkNoDataValue(noDataValues: number[] | TypedArray, value: number): boolean;
    rgb2Height(r: number, g: number, b: number): number;
    isBlur(segment: Segment): boolean;
    protected _createTemporalCanvas(size: number): CanvasRenderingContext2D;
    protected _createHeights(data: HTMLImageElement | ImageBitmap, segment: Segment | null, tileGroup: number, tileX: number, tileY: number, tileZoom: number, extent: Extent, preventChildren: boolean): TypedArray | number[];
    getHeightAsync(lonLat: LonLat, callback: (h: number) => void, zoom?: number): boolean;
    extractElevationSimple(rgbaData: number[] | TypedArray, noDataValues: number[] | TypedArray, availableParentData: (TypedArray | number[] | null) | undefined, availableParentOffsetX: number, availableParentOffsetY: number, availableZoomDiff: number, skipPositiveHeights: boolean, outCurrenElevations: number[] | TypedArray, heightFactor: number | undefined, imageSize: number): void;
    extractElevationTilesRgbNonPowerOfTwo(rgbaData: number[] | TypedArray, outCurrenElevations: number[] | TypedArray, heightFactor?: number): void;
    extractElevationTilesRgb(rgbaData: number[] | TypedArray, heightFactor: number, noDataValues: number[] | TypedArray, availableParentData: (TypedArray | number[] | null) | undefined, availableParentTileX: number, availableParentTileY: number, availableParentTileZoom: number, currentTileX: number, currentTileY: number, currentTileZoom: number, skipPositiveHeights: boolean, outCurrenElevations: number[] | TypedArray, outChildrenElevations: number[][][] | TypedArray[][]): void;
    extractElevationTilesRgbNoChildren(rgbaData: number[] | TypedArray, heightFactor: number, noDataValues: number[] | TypedArray, availableParentData: (TypedArray | number[] | null) | undefined, availableParentTileX: number, availableParentTileY: number, availableParentTileZoom: number, currentTileX: number, currentTileY: number, currentTileZoom: number, skipPositiveHeights: boolean, outCurrenElevations: number[] | TypedArray): void;
}
export { RgbTerrain };