/// <summary>
/// Initializes a new instance of the <see cref="FirstPerson"/> class.
/// </summary>
/// <param name="position">The position of the camera.</param>
/// <param name="heading">The heading.</param>
/// <param name="tilt">The tilt.</param>
public FirstPerson(Vector3 position, float heading = 0f, float tilt = 0f)
{
cachedMatrixView = new DirtyFlag <Matrix4x4>(CalcViewMatrix);
PropertyChanged += (s, a) => cachedMatrixView.Invalidate();
Position = position;
Heading = heading;
Tilt = tilt;
}
/// <summary>
/// Initializes a new instance of the <see cref="Perspective"/> class.
/// </summary>
/// <param name="fieldOfViewY">The field-of-view in y-direction.</param>
/// <param name="aspect">The aspect ratio.</param>
/// <param name="nearClip">The near clip plane distance.</param>
/// <param name="farClip">The far clip plane distance.</param>
public Perspective(float fieldOfViewY = 90f, float nearClip = 0.1f, float farClip = 1f, float aspect = 1f)
{
cachedMatrix = new DirtyFlag <Matrix4x4>(CalculateProjectionMatrix);
PropertyChanged += (s, a) => cachedMatrix.Invalidate();
Aspect = aspect;
FarClip = farClip;
FieldOfViewY = fieldOfViewY;
NearClip = nearClip;
}
/// <summary>
/// Initializes a new instance of the <see cref="Orbit"/> class.
/// </summary>
/// <param name="distance">The distance to the target.</param>
/// <param name="azimuth">The azimuth or heading.</param>
/// <param name="elevation">The elevation or tilt.</param>
public Orbit(float distance = 1f, float azimuth = 0f, float elevation = 0f)
{
cachedMatrixView = new DirtyFlag<Matrix4x4>(CalcViewMatrix);
PropertyChanged += (s, a) => cachedMatrixView.Invalidate();
Azimuth = azimuth;
Distance = distance;
Elevation = elevation;
}