void CameraMovementController::update( float timeElapsed )
{
float speedMul =m_uic->isKeyPressed( VK_SHIFT ) ? 4.0f : 1.0f;
FastFloat movementSpeed; movementSpeed.setFromFloat( 10.0f * speedMul * timeElapsed );
FastFloat negMovementSpeed; negMovementSpeed.setNeg( movementSpeed );
float rotationSpeed = 0.1f * timeElapsed;
// check which keys are pressed
m_movementDir[MD_FRONT] = m_uic->isKeyPressed( 'W' );
m_movementDir[MD_BACK] = m_uic->isKeyPressed( 'S' );
m_movementDir[MD_LEFT] = m_uic->isKeyPressed( 'A' );
m_movementDir[MD_RIGHT] = m_uic->isKeyPressed( 'D' );
m_rotating = m_uic->isKeyPressed( VK_RBUTTON );
m_uic->setRelativeMouseMovement( m_rotating );
// process the keys
Vector moveVec;
if ( m_movementDir[MD_FRONT] )
{
moveVec.setMul( m_cameraController->getLookVec(), movementSpeed );
m_cameraController->move( moveVec );
}
if ( m_movementDir[MD_BACK] )
{
moveVec.setMul( m_cameraController->getLookVec(), negMovementSpeed );
m_cameraController->move( moveVec );
}
if ( m_movementDir[MD_LEFT] )
{
moveVec.setMul( m_cameraController->getRightVec(), negMovementSpeed );
m_cameraController->move( moveVec );
}
if ( m_movementDir[MD_RIGHT] )
{
moveVec.setMul( m_cameraController->getRightVec(), movementSpeed );
m_cameraController->move( moveVec );
}
if ( m_rotating )
{
float mouseSpeedX = m_uic->getMouseSpeed().v[0] * rotationSpeed;
float mouseSpeedY = m_uic->getMouseSpeed().v[1] * rotationSpeed;
m_cameraController->rotate( mouseSpeedY, mouseSpeedX );
}
}
bool Frustum::isInside( const Sphere& sphere ) const
{
FastFloat negSphereRad;
negSphereRad.setNeg( sphere.radius );
for ( int i = 0; i < 6; ++i )
{
const FastFloat n = planes[i].dotCoord( sphere.origin );
if ( n < negSphereRad )
{
return false;
}
}
return true;
}
void Camera::lookAt( Entity& node, const FastFloat& distance, const Vector& upVec )
{
const Matrix& targetNodeMtx = node.getGlobalMtx();
const Vector& targetNodePos = targetNodeMtx.position();
const Vector& targetNodeLookVec = targetNodeMtx.forwardVec();
// I used to normalize the look vector here, but is there a need to do it really? we assume
// it's always normalized
ASSERT_MSG( targetNodeLookVec.isNormalized(), "Look vector not normalized" );
FastFloat negDist;
negDist.setNeg( distance );
Vector newPosition;
newPosition.setMul( targetNodeLookVec, negDist );
newPosition.add( targetNodePos );
Matrix lookAtMtx;
MatrixUtils::generateLookAtLH( newPosition, targetNodePos, upVec, lookAtMtx );
setLocalMtx( lookAtMtx );
}