86 lines
2.6 KiB
C#
86 lines
2.6 KiB
C#
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// <copyright file="Ray.cs">
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// Distributed under the BSD Licence (see LICENCE file).
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//
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// Copyright (c) 2014, Nition, http://www.momentstudio.co.nz/
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// Copyright (c) 2017, Máté Cserép, http://codenet.hu
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// All rights reserved.
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// </copyright>
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namespace Octree
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{
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using System;
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using System.Runtime.Serialization;
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/// <summary>
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/// Representation of rays.
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/// </summary>
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/// <remarks>
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/// A ray is an infinite line starting at <see cref="Origin"/> and going in some <see cref="Direction"/>.
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///
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/// This class was inspired by the Ray type of the Unity Engine and
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/// designed with the exact same interface to provide maximum compatibility.
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/// </remarks>
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public struct Ray
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{
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/// <summary>
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/// Gets or sets the origin of the ray.
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/// </summary>
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public Point Origin { get; set; }
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/// <summary>
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/// The direction of the ray.
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/// </summary>
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private Point _direction;
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/// <summary>
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/// Gets or sets the direction of the ray.
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/// </summary>
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public Point Direction
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{
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get { return _direction; }
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set { _direction = value.Normalized; }
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}
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/// <summary>
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/// Creates a ray starting at origin along direction.
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/// </summary>
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/// <param name="origin">The origin of the ray.</param>
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/// <param name="direction">The direction of the ray.</param>
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public Ray(Point origin, Point direction)
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{
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Origin = origin;
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_direction = direction.Normalized;
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}
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/// <summary>
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/// Returns a point at the given distance along the ray.
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/// </summary>
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/// <param name="distance">The distance.</param>
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/// <returns>The point on the ray.</returns>
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public Point GetPoint(double distance)
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{
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return Origin + Direction * distance;
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}
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/// <summary>
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/// Returns a nicely formatted string for this ray.
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/// </summary>
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public override string ToString()
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{
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return String.Format("Origin: {0}, Dir: {1}",
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Origin,
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Direction
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);
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}
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/// <summary>
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/// Returns a nicely formatted string for this ray.
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/// </summary>
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/// <param name="format">The format for the origin and direction.</param>
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public string ToString(string format)
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{
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return String.Format("Origin: {0}, Dir: {1}",
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Origin.ToString(format),
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Direction.ToString(format)
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);
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}
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}
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}
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