/**
 * Calculate coordinates along a line at specified distance
 *
 * @param p0 - Start point coordinates {x: number, y: number}
 * @param p1 - Direction reference point coordinates
 * @param value - Distance to move (positive: towards p1, negative: opposite)
 *
 * @returns New coordinates along the line segment
 *
 * @example
 * ```typescript
 * // Horizontal movement
 * const start = { x: 0, y: 0 };
 * const end = { x: 10, y: 0 };
 * console.log(calcRelativeCoord(start, end, 5)); // {x:5, y:0}
 *
 * // Diagonal movement
 * console.log(calcRelativeCoord(start, {x:3,y:4}, 5)); // {x:3, y:4}
 * ```
 *
 * @remarks
 * - Returns p0 when points coincide
 * - Handles vertical/horizontal/sloped lines
 * - Subject to JS floating-point precision
 */
export declare const calcRelativeCoord: (p0: Coord, p1: Coord, value: number) => Coord;