Gets the perpendicular vector to a specified vector : Vector « Development Class « C# / C Sharp

1. C# / C Sharp
2. Development Class
3. Vector

Gets the perpendicular vector to a specified vector

        
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//  Part of the Conquera Project
//
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//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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////////////////////////////////////////////////////////////////////////

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Xna.Framework;

namespace Ale.Tools
{
    /// <summary>
    /// 
    /// </summary>
    public static class AleMathUtils
    {
        public static Random Random = new Random();

        /// <summary>
        /// Gets the perpendicular vector to a specified vector
        /// </summary>
        /// <param name="vec"></param>
        /// <param name="perp"></param>
        /// <returns></returns>
        public static void GetPerpVector(ref Vector3 vec, out Vector3 perp)
        {
            Vector3 vecAbs = new Vector3(Math.Abs(vec.X), Math.Abs(vec.Y), Math.Abs(vec.Z));
            //avoid parallel  vector
            if (vecAbs.X < vecAbs.Y)
            {
                if (vecAbs.X < vecAbs.Z)
                {
                    perp = Vector3.UnitX;
                }
                else
                {
                    perp = Vector3.UnitZ;
                }
            }
            else
            {
                if (vecAbs.Y < vecAbs.Z)
                {
                    perp = Vector3.UnitY;
                }
                else
                {
                    perp = Vector3.UnitZ;
                }
            }
            perp.Normalize();
            Vector3.Cross(ref vec, ref perp, out perp);
        }

        /// <summary>
        /// Gets the perpendicular vector to a specified vector
        /// </summary>
        /// <param name="vec"></param>
        /// <returns></returns>
        public static Vector3 GetPerpVector(ref Vector3 vec)
        {
            Vector3 perp;
            GetPerpVector(ref vec, out perp);
            return perp;
        }

        /// <summary>
        /// Gets the perpendicular vector to a specified vector
        /// </summary>
        /// <param name="vec"></param>
        /// <param name="perp"></param>
        /// <returns></returns>
        public static void GetPerpVector(ref Vector2 vec, out Vector2 perp)
        {
            perp = new Vector2(-vec.Y, vec.X);
        }
    }
}

   
    
    
    
    
    
    
    
  

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