void arkOpenGLWidget::mouseMoveEvent(QMouseEvent* event)
{
QPoint currentMousePos(event->x(), event->y());
QPoint diff = currentMousePos - m_lastMousePos;
if (event->modifiers() & Qt::ControlModifier) {
m_mediator_shptr->translateCamera( diff.x(), diff.y(), 0 );
m_mediator_shptr->translateCamera(diff.x(), diff.y(), 0);
}
else if (event->modifiers() & Qt::ShiftModifier) {
m_mediator_shptr->translateCamera(0, 0, -diff.y());
}
else {
m_mediator_shptr->rotateCamera(diff.x(), diff.y());
}
m_lastMousePos = currentMousePos;
}
void CrystalEditorFrame::OnMouseMove(wxMouseEvent& event)
{
if (!dragging) return;
// Turn mouse movement to a movement of a virtual trackball (which is as big as the window).
Vector3 currentMousePos(event.GetX(), event.GetY(), 0);
int width, height;
GetSize(&width, &height);
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, width);
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, height);
double windowSize = std::min(width, height);
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, windowSize);
Vector3 center(0.5 * width, 0.5 * height, 0);
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, center);
Vector3 normPrevPos = (prevMousePos - center) / windowSize;
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, normPrevPos);
Vector3 normPos = (currentMousePos - center) / windowSize;
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, normPos);
// Invert vertical axis, because in camera space Y grow upward.
normPrevPos.y = -normPrevPos.y;
normPos.y = -normPos.y;
// Calculate the Z position on the trackball
normPrevPos.z = normPrevPos * normPrevPos <= 1 ? sqrt(1.0 - normPrevPos * normPrevPos) : 0;
normPos.z = normPos * normPos <= 1 ? sqrt(1.0 - normPos * normPos) : 0;
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, normPrevPos);
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, normPos);
// Calculate the rotation axis
Vector3 rotAxis = normPrevPos % normPos;
double rotAxisLength = ~rotAxis;
if (rotAxisLength == 0)
{
// No rotation.
return;
}
rotAxis /= rotAxisLength;
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, rotAxis);
// Calculate the real rotation axis and the angle.
double rotAngle = acos((normPrevPos * normPos)/(~normPrevPos * ~normPos));
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, rotAngle);
Vector3 realRotAxis = rotAxis.x * right + rotAxis.y * upward + rotAxis.z * backward; // Create the true rotation axis (in camera space).
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, realRotAxis);
Matrix rotation = createRotationMatrix(realRotAxis, -rotAngle); // Negative as we rotate the view, not the object
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, rotation);
backward = transformVector(rotation, backward);
right = transformVector(rotation, right);
upward = transformVector(rotation, upward);
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, backward);
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, right);
log_var(CRYSTAL_EDITOR_MOUSE_MOVE, upward);
fix3VectorSystem(right, upward, backward);
prevMousePos.x = event.GetX();
prevMousePos.y = event.GetY();
prevMousePos.z = 0;
// Calculate ray path
updateRayPaths();
mainPanel->Refresh();
log_printf(CRYSTAL_EDITOR_MOUSE_MOVE, "========================\n");
}
