CreateBillboard()

template<Precision P = Precision::Default>

static constexpr Matrix43 SRL::Math::Types::Matrix43::CreateBillboard ( const Vector3D & position, const Vector3D & cameraPosition, const Vector3D & up = Vector3D::UnitY() )

inlinestaticconstexpr

Create a billboard matrix that always faces the camera.

This static method generates a billboard matrix that ensures an object always faces the camera. The resulting matrix can be used for rendering objects like sprites that should always face the camera.

Template Parameters

P	Precision level for calculation, allowing users to choose the desired precision for the calculations.

Parameters

position	The position of the billboard in world coordinates.
cameraPosition	The position of the camera in world coordinates.
up	The up vector (usually Vector3D::UnitY()), defining the vertical orientation of the billboard.

Returns

The billboard matrix that transforms points from world space to the billboard's local space.

Matrix43 billboardMatrix = Matrix43::CreateBillboard(
    Vector3D(0, 0, 0),   // Billboard position
    Vector3D(0, 0, 5),   // Camera position
    Vector3D(0, 1, 0)    // Up vector
);

Note

Ensure that the up vector is not collinear with the look vector to avoid undefined behavior.