import { Renderer } from './renderer';
import { TileGraySource } from '../source/tile-gray-source';
import { Units } from './units';
import { GraySource } from '../source/gray-source';
export interface Feather {
    lonLat: number[];
    worldXYZ: number[];
    canvasPosition: number[];
    u: number;
    v: number;
    value: number;
    direction: number;
    featherId: string;
}
export declare class FeatherRenderer extends Renderer {
    source: TileGraySource | GraySource;
    protected color: string;
    protected pixelInterval: number;
    protected pixelSide: number;
    protected units: Units;
    protected featherArr: Feather[];
    protected svgArr: any;
    protected iconCache: Record<string, any>;
    protected icons: any;
    protected computed: boolean;
    constructor();
    setLayerCanvas(canvas: HTMLCanvasElement): void;
    clear(): void;
    render(): void;
    setConfig(config: any): void;
    protected computePosition(): void;
    protected computeValue(feather: Feather): void;
    protected windValue2svg(value: any): string;
    protected windValue2svgByMeter(value: any): string;
    protected windValue2svgByKnots(value: any): string;
    protected seacurrentsValue2svg(value: any): string;
    loadFeather(customAssets: Record<string, string>, iconType: string): void;
    prepareFeather(iconType: string): void;
    protected drawFeather(ctx: CanvasRenderingContext2D, feather: Feather): void;
}