//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="Triangle"
// Project: StgSharp
// AuthorGroup: Nitload
// Copyright (c) Nitload. 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.Graphics;
using StgSharp.Mathematics;
using StgSharp.Mathematics.Graphics;

using System;
using System.Numerics;

namespace StgSharp.Geometries
{
    public unsafe class Triangle : PlainGeometry
    {

        internal static int[] Indices = [
            0,
            1,
            2
        ];

        public Triangle()
            : base(PlainCoordinate.StandardPlainCoordination)
        {
            vertexMat = new Vec4[3];
        }

        public Triangle(Point vertex01, Point vertex02, Point vertex03)
            : base(PlainCoordinate.StandardPlainCoordination)
        {
            this[0] = vertex01;
            this[1] = vertex02;
            this[2] = vertex03;
        }

        public Triangle(PlainCoordinate coordination, Point vertex01, Point vertex02, Point vertex03)
            : base(coordination)
        {
            this[0] = vertex01;
            this[1] = vertex02;
            this[2] = vertex03;
        }

        public Triangle(float v0x, float v0y, float v1x, float v1y, float v2x, float v2y)
            : base(PlainCoordinate.StandardPlainCoordination)
        {
            this[0] = new Point(v0x, v0y, 0);
            this[1] = new Point(v1x, v1y, 0);
            this[2] = new Point(v2x, v2y, 0);
        }

        public Triangle(PlainCoordinate coordination, float v0x, float v0y, float v1x, float v1y, float v2x, float v2y)
            : base(coordination)
        {
            this[0] = new Point(v0x, v0y, 0);
            this[1] = new Point(v1x, v1y, 0);
            this[2] = new Point(v2x, v2y, 0);
        }

        public override ReadOnlySpan<int> VertexIndices => Indices;

    }
}