/// <reference path="../../../globals.d.ts" />
/// <reference path="./coordinate.d.ts" />

declare module goog.math {

    class Line extends Line__Class { }
    /** Fake class which should be extended to avoid inheriting static properties */
    class Line__Class  { 
    
            /**
             * Object representing a line.
             * @param {number} x0 X coordinate of the start point.
             * @param {number} y0 Y coordinate of the start point.
             * @param {number} x1 X coordinate of the end point.
             * @param {number} y1 Y coordinate of the end point.
             * @constructor
             * @final
             */
            constructor(x0: number, y0: number, x1: number, y1: number);
    
            /**
             * X coordinate of the first point.
             * @type {number}
             */
            x0: number;
    
            /**
             * Y coordinate of the first point.
             * @type {number}
             */
            y0: number;
    
            /**
             * X coordinate of the first control point.
             * @type {number}
             */
            x1: number;
    
            /**
             * Y coordinate of the first control point.
             * @type {number}
             */
            y1: number;
    
            /**
             * @return {!goog.math.Line} A copy of this line.
             */
            clone(): goog.math.Line;
    
            /**
             * Tests whether the given line is exactly the same as this one.
             * @param {goog.math.Line} other The other line.
             * @return {boolean} Whether the given line is the same as this one.
             */
            equals(other: goog.math.Line): boolean;
    
            /**
             * @return {number} The squared length of the line segment used to define the
             *     line.
             */
            getSegmentLengthSquared(): number;
    
            /**
             * @return {number} The length of the line segment used to define the line.
             */
            getSegmentLength(): number;
    
            /**
             * Returns the point on the line segment proportional to t, where for t = 0 we
             * return the starting point and for t = 1 we return the end point.  For t < 0
             * or t > 1 we extrapolate along the line defined by the line segment.
             * @param {number} t The interpolation parameter along the line segment.
             * @return {!goog.math.Coordinate} The point on the line segment at t.
             */
            getInterpolatedPoint(t: number): goog.math.Coordinate;
    
            /**
             * Computes the point on the line closest to a given point.  Note that a line
             * in this case is defined as the infinite line going through the start and end
             * points.  To find the closest point on the line segment itself see
             * {@see #getClosestSegmentPoint}.
             * @param {number|goog.math.Coordinate} x The x coordinate of the point, or
             *     a coordinate object.
             * @param {number=} opt_y The y coordinate of the point - required if x is a
             *     number, ignored if x is a goog.math.Coordinate.
             * @return {!goog.math.Coordinate} The point on the line closest to the given
             *     point.
             */
            getClosestPoint(x: number|goog.math.Coordinate, opt_y?: number): goog.math.Coordinate;
    
            /**
             * Computes the point on the line segment closest to a given point.
             * @param {number|goog.math.Coordinate} x The x coordinate of the point, or
             *     a coordinate object.
             * @param {number=} opt_y The y coordinate of the point - required if x is a
             *     number, ignored if x is a goog.math.Coordinate.
             * @return {!goog.math.Coordinate} The point on the line segment closest to the
             *     given point.
             */
            getClosestSegmentPoint(x: number|goog.math.Coordinate, opt_y?: number): goog.math.Coordinate;
    } 
    
}