import { LuxonTimeScale } from "./axisutil.mjs";
import { SeismogramSegment } from "./seismogramsegment.mjs";
import { SeismogramDisplayData } from "./seismogram.mjs";
import type { ScaleLinear } from "d3-scale";
export declare const DEFAULT_MAX_SAMPLE_PER_PIXEL = 3;
export declare const DEFAULT_GRID_LINE_COLOR = "gainsboro";
export declare function clearCanvas(canvas: HTMLCanvasElement): void;
export declare function drawXScaleGridLines(canvas: HTMLCanvasElement, xScale: ScaleLinear<number, number, never> | LuxonTimeScale, colorname?: string, lineWidth?: number): void;
export declare function drawYScaleGridLines(canvas: HTMLCanvasElement, yScale: ScaleLinear<number, number, never>, colorname?: string, lineWidth?: number): void;
export declare function drawAllOnCanvas(canvas: HTMLCanvasElement, sddList: Array<SeismogramDisplayData>, xScaleList: Array<LuxonTimeScale>, yScaleList: Array<ScaleLinear<number, number, never>>, colornameList: Array<string>, lineWidth?: number, connectSegments?: boolean, maxSamplePerPixelForLineDraw?: number): void;
export declare function drawSeismogramAsLine(sdd: SeismogramDisplayData, context: CanvasRenderingContext2D, width: number, xScale: LuxonTimeScale, yScale: ScaleLinear<number, number, never>, color: string, lineWidth?: number, connectSegments?: boolean, maxSamplePerPixelForLineDraw?: number): void;
export type XYLine = {
    x: Array<number>;
    y: Array<number>;
    samplesPerPixel: number;
    maxSamplePerPixelForLineDraw: number;
};
export declare function seismogramSegmentAsLine(segment: SeismogramSegment | null, width: number, xScale: LuxonTimeScale, yScale: ScaleLinear<number, number, never>, maxSamplePerPixelForLineDraw?: number): XYLine;
export declare function pushPoint(out: XYLine, xpixel: number, ypixel: number): void;
export declare function rgbaForColorName(name: string): Uint8ClampedArray;
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