CameraMovement::Utils Namespace Reference

Classes
class	ICameraBehavior
	Base interface for camera behaviors. More...
class	DefaultBehavior
	Default camera behavior with WASD movement and mouse look. More...
class	DontMoveBehavior
	Camera behavior that does not move the camera. More...

Functions
glm::quat	ComputeLookAtQuaternion (const glm::vec3 &eye, const glm::vec3 &target, const glm::vec3 &up)
	Compute a quaternion that represents a "look at" rotation.
glm::quat	RotateQuaternion (const glm::quat &current, float pitch, float yaw)
	Apply pitch and yaw rotation to a quaternion.
glm::vec3	GetRightVector (const glm::quat &rotation)
	Get the right vector from a quaternion rotation.
glm::vec3	GetUpVector (const glm::quat &rotation)
	Get the up vector from a quaternion rotation.
glm::vec3	GetForwardVector (const glm::quat &rotation)
	Get the forward vector from a quaternion rotation.

Function Documentation

ComputeLookAtQuaternion()

glm::quat CameraMovement::Utils::ComputeLookAtQuaternion ( const glm::vec3 & eye, const glm::vec3 & target, const glm::vec3 & up )

inline

Compute a quaternion that represents a "look at" rotation.

Parameters

eye	The position of the camera.
target	The point the camera is looking at.
up	The up vector.

Returns

The quaternion representing the rotation.

GetForwardVector()

glm::vec3 CameraMovement::Utils::GetForwardVector ( const glm::quat & rotation )

inline

Get the forward vector from a quaternion rotation.

Parameters

rotation

The rotation quaternion.

Returns

The forward vector.

GetRightVector()

glm::vec3 CameraMovement::Utils::GetRightVector ( const glm::quat & rotation )

inline

Get the right vector from a quaternion rotation.

Parameters

rotation

The rotation quaternion.

Returns

The right vector.

GetUpVector()

glm::vec3 CameraMovement::Utils::GetUpVector ( const glm::quat & rotation )

inline

Get the up vector from a quaternion rotation.

Parameters

rotation

The rotation quaternion.

Returns

The up vector.

RotateQuaternion()

glm::quat CameraMovement::Utils::RotateQuaternion ( const glm::quat & current, float pitch, float yaw )

inline

Apply pitch and yaw rotation to a quaternion.

Parameters

current	The current rotation quaternion.
pitch	The pitch angle in radians (rotation around right axis).
yaw	The yaw angle in radians (rotation around up axis).

Returns

The new rotation quaternion.