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Exposed up vector in sf::Listener API

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Closes #545
This commit is contained in:
Jan Haller 2014-03-23 18:41:31 +01:00
parent d97e5244af
commit 50e3052773
2 changed files with 101 additions and 22 deletions
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90
include/SFML/Audio/Listener.hpp
View File

@ -104,46 +104,96 @@ public :
static Vector3f getPosition();
////////////////////////////////////////////////////////////
/// \brief Set the orientation of the listener in the scene
/// \brief Set the forward vector of the listener in the scene
///
/// The orientation defines the 3D axes of the listener
/// (left, up, front) in the scene. The orientation vector
/// doesn't have to be normalized.
/// The default listener's orientation is (0, 0, -1).
/// The direction (also called "at vector") is the vector
/// pointing forward from the listener's perspective. Together
/// with the up vector, it defines the 3D orientation of the
/// listener in the scene. The direction vector doesn't
/// have to be normalized.
/// The default listener's direction is (0, 0, -1).
///
/// \param x X coordinate of the listener's orientation
/// \param y Y coordinate of the listener's orientation
/// \param z Z coordinate of the listener's orientation
/// \param x X coordinate of the listener's direction
/// \param y Y coordinate of the listener's direction
/// \param z Z coordinate of the listener's direction
///
/// \see getDirection, setPosition
/// \see getDirection, setUpVector, setPosition
///
////////////////////////////////////////////////////////////
static void setDirection(float x, float y, float z);
////////////////////////////////////////////////////////////
/// \brief Set the orientation of the listener in the scene
/// \brief Set the forward vector of the listener in the scene
///
/// The orientation defines the 3D axes of the listener
/// (left, up, front) in the scene. The orientation vector
/// doesn't have to be normalized.
/// The default listener's orientation is (0, 0, -1).
/// The direction (also called "at vector") is the vector
/// pointing forward from the listener's perspective. Together
/// with the up vector, it defines the 3D orientation of the
/// listener in the scene. The direction vector doesn't
/// have to be normalized.
/// The default listener's direction is (0, 0, -1).
///
/// \param direction New listener's orientation
/// \param direction New listener's direction
///
/// \see getDirection, setPosition
/// \see getDirection, setUpVector, setPosition
///
////////////////////////////////////////////////////////////
static void setDirection(const Vector3f& direction);
////////////////////////////////////////////////////////////
/// \brief Get the current orientation of the listener in the scene
/// \brief Get the current forward vector of the listener in the scene
///
/// \return Listener's orientation
/// \return Listener's forward vector (not normalized)
///
/// \see setDirection
///
////////////////////////////////////////////////////////////
static Vector3f getDirection();
////////////////////////////////////////////////////////////
/// \brief Set the upward vector of the listener in the scene
///
/// The up vector is the vector that points upward from the
/// listener's perspective. Together with the direction, it
/// defines the 3D orientation of the listener in the scene.
/// The up vector doesn't have to be normalized.
/// The default listener's up vector is (0, 1, 0). It is usually
/// not necessary to change it, especially in 2D scenarios.
///
/// \param x X coordinate of the listener's up vector
/// \param y Y coordinate of the listener's up vector
/// \param z Z coordinate of the listener's up vector
///
/// \see getUpVector, setDirection, setPosition
///
////////////////////////////////////////////////////////////
static void setUpVector(float x, float y, float z);
////////////////////////////////////////////////////////////
/// \brief Set the upward vector of the listener in the scene
///
/// The up vector is the vector that points upward from the
/// listener's perspective. Together with the direction, it
/// defines the 3D orientation of the listener in the scene.
/// The up vector doesn't have to be normalized.
/// The default listener's up vector is (0, 1, 0). It is usually
/// not necessary to change it, especially in 2D scenarios.
///
/// \param upVector New listener's up vector
///
/// \see getUpVector, setDirection, setPosition
///
////////////////////////////////////////////////////////////
static void setUpVector(const Vector3f& upVector);
////////////////////////////////////////////////////////////
/// \brief Get the current upward vector of the listener in the scene
///
/// \return Listener's upward vector (not normalized)
///
/// \see setUpVector
///
////////////////////////////////////////////////////////////
static Vector3f getUpVector();
};
} // namespace sf
@ -163,8 +213,8 @@ public :
/// same position, orientation, etc.).
///
/// sf::Listener is a simple interface, which allows to setup the
/// listener in the 3D audio environment (position and direction),
/// and to adjust the global volume.
/// listener in the 3D audio environment (position, direction and
/// up vector), and to adjust the global volume.
///
/// Because the listener is unique in the scene, sf::Listener only
/// contains static functions and doesn't have to be instantiated.

31
src/SFML/Audio/Listener.cpp
View File

@ -34,6 +34,7 @@ namespace
float listenerVolume = 100.f;
sf::Vector3f listenerPosition (0.f, 0.f, 0.f);
sf::Vector3f listenerDirection(0.f, 0.f, -1.f);
sf::Vector3f listenerUpVector (0.f, 1.f, 0.f);
}
@ -100,7 +101,7 @@ void Listener::setDirection(const Vector3f& direction)
{
priv::ensureALInit();
float orientation[] = {direction.x, direction.y, direction.z, 0.f, 1.f, 0.f};
float orientation[] = {direction.x, direction.y, direction.z, listenerUpVector.x, listenerUpVector.y, listenerUpVector.z};
alCheck(alListenerfv(AL_ORIENTATION, orientation));
listenerDirection = direction;
}
@ -113,4 +114,32 @@ Vector3f Listener::getDirection()
return listenerDirection;
}
////////////////////////////////////////////////////////////
void Listener::setUpVector(float x, float y, float z)
{
setUpVector(sf::Vector3f(x, y, z));
}
////////////////////////////////////////////////////////////
void Listener::setUpVector(const Vector3f& upVector)
{
if (upVector != listenerUpVector)
{
priv::ensureALInit();
float orientation[] = {listenerDirection.x, listenerDirection.y, listenerDirection.z, upVector.x, upVector.y, upVector.z};
alCheck(alListenerfv(AL_ORIENTATION, orientation));
listenerUpVector = upVector;
}
}
////////////////////////////////////////////////////////////
Vector3f Listener::getUpVector()
{
return listenerUpVector;
}
} // namespace sf