Mat3f CameraControls::getOrientation(void) const
{
Mat3f r;
r.col(2) = -m_forward.normalized();
r.col(0) = m_up.cross(r.col(2)).normalized();
r.col(1) = ((Vec3f)r.col(2)).cross(r.col(0)).normalized();
return r;
}
Mat4f CameraControls::getWorldToCamera(void) const
{
Mat3f orient = getOrientation();
Vec3f pos = orient.transposed() * m_position;
Mat4f r;
r.setRow(0, Vec4f(orient.col(0), -pos.x));
r.setRow(1, Vec4f(orient.col(1), -pos.y));
r.setRow(2, Vec4f(orient.col(2), -pos.z));
return r;
}
Mat4f CameraControls::getCameraToWorld(void) const
{
Mat3f orient = getOrientation();
Mat4f r;
r.setCol(0, Vec4f(orient.col(0), 0.0f));
r.setCol(1, Vec4f(orient.col(1), 0.0f));
r.setCol(2, Vec4f(orient.col(2), 0.0f));
r.setCol(3, Vec4f(m_position, 1.0f));
return r;
}
bool CameraControls::handleEvent(const Window::Event& ev)
{
if (!m_commonControls)
fail("CameraControls attached to a window without CommonControls!");
CommonControls& cc = *m_commonControls;
FW_ASSERT(m_window == ev.window || ev.type == Window::EventType_AddListener);
// Initialize movement.
Mat3f orient = getOrientation();
Vec3f rotate = 0.0f;
Vec3f move = 0.0f;
// Handle events.
switch (ev.type)
{
case Window::EventType_AddListener:
FW_ASSERT(!m_window);
m_window = ev.window;
m_timer.unstart();
m_dragLeft = false;
m_dragMiddle = false;
m_dragRight = false;
cc.addStateObject(this);
addGUIControls();
repaint();
return false;
case Window::EventType_RemoveListener:
cc.removeStateObject(this);
removeGUIControls();
repaint();
m_window = NULL;
return false;
case Window::EventType_KeyDown:
if (ev.key == FW_KEY_MOUSE_LEFT) m_dragLeft = true;
if (ev.key == FW_KEY_MOUSE_MIDDLE) m_dragMiddle = true;
if (ev.key == FW_KEY_MOUSE_RIGHT) m_dragRight = true;
if (ev.key == FW_KEY_WHEEL_UP) m_speed *= 1.2f;
if (ev.key == FW_KEY_WHEEL_DOWN) m_speed /= 1.2f;
break;
case Window::EventType_KeyUp:
if (ev.key == FW_KEY_MOUSE_LEFT) m_dragLeft = false;
if (ev.key == FW_KEY_MOUSE_MIDDLE) m_dragMiddle = false;
if (ev.key == FW_KEY_MOUSE_RIGHT) m_dragRight = false;
break;
case Window::EventType_Mouse:
{
Vec3f delta = Vec3f((F32)ev.mouseDelta.x, (F32)-ev.mouseDelta.y, 0.0f);
if (m_dragLeft) rotate += delta * s_mouseRotateSpeed;
if (m_dragMiddle) move += delta * m_speed * s_mouseStrafeSpeed;
if (m_dragRight) move += Vec3f(0.0f, 0.0f, (F32)ev.mouseDelta.y) * m_speed * s_mouseStrafeSpeed;
}
break;
case Window::EventType_Paint:
{
F32 timeDelta = m_timer.end();
F32 boost = cc.getKeyBoost();
Vec3f rotateTmp = 0.0f;
bool alt = m_window->isKeyDown(FW_KEY_ALT);
if (m_window->isKeyDown(FW_KEY_A) || (m_window->isKeyDown(FW_KEY_LEFT) && alt)) move.x -= 1.0f;
if (m_window->isKeyDown(FW_KEY_D) || (m_window->isKeyDown(FW_KEY_RIGHT) && alt)) move.x += 1.0f;
if (m_window->isKeyDown(FW_KEY_F) || m_window->isKeyDown(FW_KEY_PAGE_DOWN)) move.y -= 1.0f;
if (m_window->isKeyDown(FW_KEY_R) || m_window->isKeyDown(FW_KEY_PAGE_UP)) move.y += 1.0f;
if (m_window->isKeyDown(FW_KEY_W) || (m_window->isKeyDown(FW_KEY_UP) && alt)) move.z -= 1.0f;
if (m_window->isKeyDown(FW_KEY_S) || (m_window->isKeyDown(FW_KEY_DOWN) && alt)) move.z += 1.0f;
if (m_window->isKeyDown(FW_KEY_LEFT) && !alt) rotateTmp.x -= 1.0f;
if (m_window->isKeyDown(FW_KEY_RIGHT) && !alt) rotateTmp.x += 1.0f;
if (m_window->isKeyDown(FW_KEY_DOWN) && !alt) rotateTmp.y -= 1.0f;
if (m_window->isKeyDown(FW_KEY_UP) && !alt) rotateTmp.y += 1.0f;
if (m_window->isKeyDown(FW_KEY_E) || m_window->isKeyDown(FW_KEY_HOME)) rotateTmp.z -= 1.0f;
if (m_window->isKeyDown(FW_KEY_Q) || m_window->isKeyDown(FW_KEY_INSERT)) rotateTmp.z += 1.0f;
move *= timeDelta * m_speed * boost;
rotate += rotateTmp * timeDelta * s_keyRotateSpeed * boost;
}
break;
default:
break;
}
// Apply movement.
if (m_enableMovement)
{
if (!move.isZero())
m_position += orient * move;
if (rotate.x != 0.0f || rotate.y != 0.0f)
{
Vec3f tmp = orient.col(2) * cos(rotate.x) - orient.col(0) * sin(rotate.x);
m_forward = (orient.col(1) * sin(rotate.y) - tmp * cos(rotate.y)).normalized();
if (!m_keepAligned)
m_up = (orient.col(1) * cos(rotate.y) + tmp * sin(rotate.y)).normalized();
else if (-m_forward.cross(m_up).dot(tmp.cross(m_up).normalized()) < s_inclinationLimit)
m_forward = -tmp.normalized();
}
if (rotate.z != 0.0f && !m_keepAligned)
{
Vec3f up = orient.transposed() * m_up;
m_up = orient * Vec3f(up.x * cos(rotate.z) - sin(rotate.z), up.x * sin(rotate.z) + up.y * cos(rotate.z), up.z);
}
}
// Apply alignment.
if (m_alignY)
m_up = Vec3f(0.0f, 1.0f, 0.0f);
m_alignY = false;
if (m_alignZ)
m_up = Vec3f(0.0f, 0.0f, 1.0f);
m_alignZ = false;
// Update stereo mode.
if (hasFeature(Feature_StereoControls))
{
GLContext::Config config = m_window->getGLConfig();
config.isStereo = (m_enableStereo && GLContext::isStereoAvailable());
m_window->setGLConfig(config);
}
// Repaint continuously.
if (ev.type == Window::EventType_Paint)
repaint();
return false;
}
