public VertexPositionColorTexture(Vector3 position, Color color, Vector2 textureCoordinate)
 {
     this.Position = position;
     Color = color;
     this.TextureCoordinate = textureCoordinate;
 }
 public VertexPositionColorTexture(Vector3 position, Color color, Vector2 textureCoordinate)
 {
     this.Position          = position;
     Color                  = color;
     this.TextureCoordinate = textureCoordinate;
 }