void QD3D11MultiViewportViewer::mouseMoveEvent( QMouseEvent* event )
{
Vector2i curPos( event->x(), event->y() );
Vector2f delta = curPos - m_prevPos;
#if 1
float pitchSpeed = m_flipMouseUpDown ? m_mousePitchSpeed : -m_mousePitchSpeed;
const float yawSpeed = 0.005f;
const float panSpeed = 0.005f;
const float walkSpeed = -0.005f;
Matrix3f worldToCamera = m_perspectiveCamera.viewMatrix().getSubmatrix3x3( 0, 0 );
Matrix3f cameraToWorld = m_perspectiveCamera.inverseViewMatrix().getSubmatrix3x3( 0, 0 );
Vector3f eye = m_perspectiveCamera.eye();
Vector3f x = m_perspectiveCamera.right();
Vector3f y = m_perspectiveCamera.up();
Vector3f z = m_perspectiveCamera.forward();
// rotate
if( event->buttons() == Qt::LeftButton )
{
// pitch around the local x axis
float pitch = pitchSpeed * delta.y;
Matrix3f pitchMatrix = Matrix3f::rotateX( pitch );
y = cameraToWorld * pitchMatrix * worldToCamera * y;
z = cameraToWorld * pitchMatrix * worldToCamera * z;
// yaw around the world up vector
float yaw = yawSpeed * delta.x;
Matrix3f yawMatrix = m_groundPlaneToWorld * Matrix3f::rotateY( yaw ) * m_worldToGroundPlane;
x = yawMatrix * x;
y = yawMatrix * y;
z = yawMatrix * z;
m_perspectiveCamera.setLookAt( eye, eye + z, y );
}
// walk
else if( event->buttons() == Qt::RightButton )
{
float dx = panSpeed * delta.x;
float dz = walkSpeed * delta.y;
translate( dx, 0, dz );
}
// move up/down
else if( event->buttons() == Qt::MiddleButton )
{
float dy = -panSpeed * delta.y;
translate( 0, dy, 0 );
}
#else
if(event->buttons() & Qt::RightButton) //rotate
{
float rotSpeed = 0.005f; //radians per pixel
Quat4f rotation;
rotation.setAxisAngle(rotSpeed * delta.abs(), Vector3f(-delta[1], -delta[0], 0));
Matrix3f rotMatrix = Matrix3f::rotation(rotation);
Matrix3f viewMatrix = m_camera.getViewMatrix().getSubmatrix3x3(0, 0);
rotMatrix = viewMatrix.transposed() * rotMatrix * viewMatrix;
Vector3f eye, center, up;
m_camera.getLookAt(&eye, ¢er, &up);
m_camera.setLookAt(center + rotMatrix * (eye - center), center, rotMatrix * up);
}
else if(event->buttons() & Qt::LeftButton) //translate
{
float speed = 10.f;
Vector3f screenDelta(delta[0], delta[1], 0);
screenDelta[0] /= -double(width());
screenDelta[1] /= double(height());
Matrix4f iViewProjMatrix = m_camera.getInverseViewProjectionMatrix();
Vector3f worldDelta = iViewProjMatrix.getSubmatrix3x3(0, 0) * (speed * screenDelta);
Vector3f eye, center, up;
m_camera.getLookAt(&eye, ¢er, &up);
m_camera.setLookAt(eye + worldDelta, center + worldDelta, up);
}
#endif
m_prevPos = curPos;
update();
}
