using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

namespace MorphShader
{
    public struct Vertex2PositionNormalTexture
    {
        public Vector3 SourcePosition;
        public Vector3 SourceNormal;
        public Vector2 SourceTextureCoord;

        public Vector3 DestinationPosition;
        public Vector3 DestinationNormal;
        public Vector2 DestinationTextureCoord;

        public Vertex2PositionNormalTexture(Vector3 sourcePosition,
                                            Vector3 sourceNormal,
                                            Vector2 sourceTexCoord,
                                            Vector3 destinationPosition,
                                            Vector3 destinationNormal,
                                            Vector2 destinationTexCoord)
        {
            this.SourcePosition = sourcePosition;
            this.SourceTextureCoord = sourceTexCoord;
            this.SourceNormal = sourceNormal;

            this.DestinationPosition = destinationPosition;
            this.DestinationNormal = destinationNormal;
            this.DestinationTextureCoord = destinationTexCoord;
        }

        public static int SizeInBytes = 16 * sizeof(float);

        public static VertexElement[] VertexElements =
        {
            new VertexElement(  0,
                                0,
                                VertexElementFormat.Vector3,
                                VertexElementMethod.Default,
                                VertexElementUsage.Position,
                                0
                            ),

            new VertexElement(  0,
                                sizeof(float) * 3,
                                VertexElementFormat.Vector3,
                                VertexElementMethod.Default,
                                VertexElementUsage.Normal,
                                0
                            ),

            new VertexElement(  0,
                                sizeof(float) * 6,
                                VertexElementFormat.Vector2,
                                VertexElementMethod.Default,
                                VertexElementUsage.TextureCoordinate,
                                0
                            ),

            new VertexElement(  1,
                                sizeof(float) * 8,
                                VertexElementFormat.Vector3,
                                VertexElementMethod.Default,
                                VertexElementUsage.Position,
                                1
                            ),

            new VertexElement(  1,
                                sizeof(float) * 11,
                                VertexElementFormat.Vector3,
                                VertexElementMethod.Default,
                                VertexElementUsage.Normal,
                                1
                            ),

            new VertexElement(  1,
                                sizeof(float) * 14,
                                VertexElementFormat.Vector2,
                                VertexElementMethod.Default,
                                VertexElementUsage.TextureCoordinate,
                                1
                            )
        };
    }
}