import { Rect } from 'geome';
import { mat2d, vec2 } from 'linearly';
import { SegmentLocation } from './Location.js';
import { PathL, VertexL } from './Path.js';
import { SegmentL } from './Segment.js';
import { PartialBy } from './utils.js';
type SimpleSegmentL = PartialBy<SegmentL, 'command'>;
/**
 * A collection of functions to handle a line represented with {@link SegmentL}.
 * @category Modules
 */
export declare namespace Line {
    function bounds(line: SimpleSegmentL): Rect;
    function point(line: SimpleSegmentL, loc: SegmentLocation): vec2;
    function derivative(line: SimpleSegmentL): vec2;
    function tangent(line: SimpleSegmentL): vec2;
    function normal(line: SimpleSegmentL): vec2;
    const curvature = 0;
    function orientation(line: SimpleSegmentL, loc: SegmentLocation): mat2d;
    function trim(line: SimpleSegmentL, start: SegmentLocation, end: SegmentLocation): SegmentL;
    function divideAtTimes(line: SimpleSegmentL, times: Iterable<number>): VertexL[];
    /**
     * Returns true if the length of line segment is zero.
     */
    function isZero(line: SimpleSegmentL): boolean;
    function offset(line: SimpleSegmentL, distance: number): PathL;
    /**
     * Converts a signed location to a time between 0 and 1.
     * @param line
     * @param loc
     * @returns
     */
    function toTime(line: SimpleSegmentL, loc: SegmentLocation): number;
}
export {};
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