/// <summary>
/// Initializes a new instance of the <see cref="Orbit"/> class.
/// </summary>
/// <param name="location"></param>
/// <param name="azimuth">The azimuth or heading.</param>
/// <param name="elevation">The elevation or tilt.</param>
public Position(Vector3 location, float azimuth = 0f, float elevation = 0f)
{
_cachedMatrixView = new CachedCalculatedValue <Matrix4x4>(CalcViewMatrix);
PropertyChanged += (s, a) => _cachedMatrixView.Invalidate();
Azimuth = azimuth;
Elevation = elevation;
_location = location;
}
/// <summary>
/// Initializes a new instance of the <see cref="Perspective"/> class.
/// </summary>
/// <param name="height"></param>
/// <param name="nearClip">The near clip plane distance.</param>
/// <param name="farClip">The far clip plane distance.</param>
/// <param name="width"></param>
public Ortographic(float width, float height, float nearClip = 0.1f, float farClip = 100)
{
_cachedMatrix = new CachedCalculatedValue <Matrix4x4>(CalculateProjectionMatrix);
PropertyChanged += (s, a) => _cachedMatrix.Invalidate();
_width = width;
_height = height;
_nearClip = nearClip;
_farClip = farClip;
}