//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="Vector.Normalize.cs"
// Project: StgSharp
// AuthorGroup: Nitload Space
// Copyright (c) Nitload Space. All rights reserved.
//     
// Permission is hereby granted, free of charge, to any person 
// obtaining a copy of this software and associated documentation 
// files (the “Software”), to deal in the Software without restriction, 
// including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, 
// and to permit persons to whom the Software is furnished to do so, 
// subject to the following conditions:
//     
// The above copyright notice and 
// this permission notice shall be included in all copies 
// or substantial portions of the Software.
//     
// THE SOFTWARE IS PROVIDED “AS IS”, 
// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
// ARISING FROM, OUT OF OR IN CONNECTION WITH 
// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//     
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
using StgSharp.Mathematics.Graphic;
using System.Numerics;

namespace StgSharp.Mathematics.Graphic
{
    public static partial class Linear
    {

        public static Vec4 Normalize(Vec4 vec)
        {
            return new Vec4
            {
                vec = Vector4.Normalize(vec.vec)
            };
        }

        public static Vec3 Normalize(Vec3 vec)
        {
            return new Vec3
            {
                v = Vector3.Normalize(vec.v)
            };
        }

        public static unsafe void Normalize(ref Vec4 source, ref Vec4 target)
        {
            Vector4 s = source.vec;
            Vector4 t = target.vec;

            s = Vector4.Normalize(s);

            Vector4 projection = Vector4.Multiply(s, t);

            t -= projection;

            source.vec = s;
            target.vec = t;
        }

        public static unsafe void Normalize(ref Vec3 source, ref Vec3 target)
        {
            Vector3 s = source.v;
            Vector3 t = target.v;

            s = Vector3.Normalize(s);
            Vector3 projection = Vector3.Dot(t, s) / Vector3.Dot(s, s) * s;
            t -= projection;
            t = Vector3.Normalize(t);

            source.v = s;
            target.v = t;
        }

    }
}