void Command::adjustCameraPosition()
{
Gui::Document* doc = Gui::Application::Instance->activeDocument();
if (doc) {
Gui::View3DInventor* view = static_cast<Gui::View3DInventor*>(doc->getActiveView());
Gui::View3DInventorViewer* viewer = view->getViewer();
SoCamera* camera = viewer->getCamera();
if (!camera || !camera->isOfType(SoOrthographicCamera::getClassTypeId()))
return;
// get scene bounding box
SoGetBoundingBoxAction action(viewer->getViewportRegion());
action.apply(viewer->getSceneGraph());
SbBox3f box = action.getBoundingBox();
if (box.isEmpty()) return;
// get cirumscribing sphere and check if camera is inside
SbVec3f cam_pos = camera->position.getValue();
SbVec3f box_cnt = box.getCenter();
SbSphere bs;
bs.circumscribe(box);
float radius = bs.getRadius();
float distance_to_midpoint = (box_cnt-cam_pos).length();
if (radius >= distance_to_midpoint) {
// Move the camera to the edge of the bounding sphere, while still
// pointing at the scene.
SbVec3f direction = cam_pos - box_cnt;
(void) direction.normalize(); // we know this is not a null vector
camera->position.setValue(box_cnt + direction * radius);
// New distance to mid point
distance_to_midpoint =
(camera->position.getValue() - box.getCenter()).length();
camera->nearDistance = distance_to_midpoint - radius;
camera->farDistance = distance_to_midpoint + radius;
camera->focalDistance = distance_to_midpoint;
}
}
}
void ViewProviderInspection::inspectCallback(void * ud, SoEventCallback * n)
{
Gui::View3DInventorViewer* view = reinterpret_cast<Gui::View3DInventorViewer*>(n->getUserData());
const SoEvent* ev = n->getEvent();
if (ev->getTypeId() == SoMouseButtonEvent::getClassTypeId()) {
const SoMouseButtonEvent * mbe = static_cast<const SoMouseButtonEvent *>(ev);
// Mark all incoming mouse button events as handled, especially, to deactivate the selection node
n->getAction()->setHandled();
n->setHandled();
if (mbe->getButton() == SoMouseButtonEvent::BUTTON2 && mbe->getState() == SoButtonEvent::UP) {
n->setHandled();
// context-menu
QMenu menu;
QAction* fl = menu.addAction(QObject::tr("Annotation"));
fl->setCheckable(true);
fl->setChecked(addflag);
QAction* cl = menu.addAction(QObject::tr("Leave info mode"));
QAction* id = menu.exec(QCursor::pos());
if (fl == id) {
addflag = fl->isChecked();
}
else if (cl == id) {
// post an event to a proxy object to make sure to avoid problems
// when opening a modal dialog
QApplication::postEvent(
new ViewProviderProxyObject(view->getGLWidget()),
new QEvent(QEvent::User));
view->setEditing(false);
view->getWidget()->setCursor(QCursor(Qt::ArrowCursor));
view->setRedirectToSceneGraph(false);
view->setRedirectToSceneGraphEnabled(false);
view->removeEventCallback(SoButtonEvent::getClassTypeId(), inspectCallback);
}
}
else if (mbe->getButton() == SoMouseButtonEvent::BUTTON1 && mbe->getState() == SoButtonEvent::UP) {
const SoPickedPoint * point = n->getPickedPoint();
if (point == NULL) {
Base::Console().Message("No point picked.\n");
return;
}
n->setHandled();
// check if we have picked one a node of the view provider we are insterested in
Gui::ViewProvider* vp = static_cast<Gui::ViewProvider*>(view->getViewProviderByPath(point->getPath()));
if (vp && vp->getTypeId().isDerivedFrom(ViewProviderInspection::getClassTypeId())) {
ViewProviderInspection* that = static_cast<ViewProviderInspection*>(vp);
QString info = that->inspectDistance(point);
Gui::getMainWindow()->setPaneText(1,info);
if (addflag)
ViewProviderProxyObject::addFlag(view, info, point);
else
Gui::ToolTip::showText(QCursor::pos(), info);
}
else {
// the nearest picked point was not part of the view provider
SoRayPickAction action(view->getViewportRegion());
action.setPickAll(TRUE);
action.setPoint(mbe->getPosition());
action.apply(view->getSceneManager()->getSceneGraph());
const SoPickedPointList& pps = action.getPickedPointList();
for (int i=0; i<pps.getLength(); ++i) {
const SoPickedPoint * point = pps[i];
vp = static_cast<Gui::ViewProvider*>(view->getViewProviderByPath(point->getPath()));
if (vp && vp->getTypeId().isDerivedFrom(ViewProviderInspection::getClassTypeId())) {
ViewProviderInspection* that = static_cast<ViewProviderInspection*>(vp);
QString info = that->inspectDistance(point);
Gui::getMainWindow()->setPaneText(1,info);
if (addflag)
ViewProviderProxyObject::addFlag(view, info, point);
else
Gui::ToolTip::showText(QCursor::pos(), info);
break;
}
}
}
}
}
// toggle between inspection and navigation mode
else if (ev->getTypeId().isDerivedFrom(SoKeyboardEvent::getClassTypeId())) {
const SoKeyboardEvent * const ke = static_cast<const SoKeyboardEvent *>(ev);
if (ke->getState() == SoButtonEvent::DOWN &&
ke->getKey() == SoKeyboardEvent::ESCAPE) {
SbBool toggle = view->isRedirectedToSceneGraph();
view->setRedirectToSceneGraph(!toggle);
n->setHandled();
}
}
}
void MeshFillHole::fileHoleCallback(void * ud, SoEventCallback * n)
{
MeshFillHole* self = reinterpret_cast<MeshFillHole*>(ud);
Gui::View3DInventorViewer* view = reinterpret_cast<Gui::View3DInventorViewer*>(n->getUserData());
const SoEvent* ev = n->getEvent();
if (ev->getTypeId() == SoLocation2Event::getClassTypeId()) {
n->setHandled();
SoRayPickAction rp(view->getViewportRegion());
rp.setPoint(ev->getPosition());
rp.setPickAll(true);
if (self->myNumPoints == 0)
rp.apply(self->myBoundariesRoot);
else
rp.apply(self->myBoundaryRoot);
SoNode* node = self->getPickedPolygon(rp);
if (node) {
std::map<SoNode*, TBoundary>::iterator it = self->myPolygons.find(node);
if (it != self->myPolygons.end()) {
// now check which vertex of the polygon is closest to the ray
unsigned long vertex_index;
SbVec3f closestPoint;
float minDist = self->findClosestPoint(rp.getLine(), it->second, vertex_index, closestPoint);
if (minDist < 1.0f) {
if (self->myNumPoints == 0)
self->myVertex->point.set1Value(0, closestPoint);
else
self->myVertex->point.set1Value(1, closestPoint);
}
}
}
}
else if (ev->getTypeId() == SoMouseButtonEvent::getClassTypeId()) {
n->setHandled();
const SoMouseButtonEvent * mbe = static_cast<const SoMouseButtonEvent *>(ev);
if (mbe->getButton() == SoMouseButtonEvent::BUTTON1 && mbe->getState() == SoButtonEvent::DOWN) {
}
else if (mbe->getButton() == SoMouseButtonEvent::BUTTON1 && mbe->getState() == SoButtonEvent::UP) {
if (self->myNumPoints > 1)
return;
SoRayPickAction rp(view->getViewportRegion());
rp.setPoint(ev->getPosition());
rp.setPickAll(true);
if (self->myNumPoints == 0)
rp.apply(self->myBoundariesRoot);
else
rp.apply(self->myBoundaryRoot);
SoNode* node = self->getPickedPolygon(rp);
if (node) {
std::map<SoNode*, TBoundary>::iterator it = self->myPolygons.find(node);
if (it != self->myPolygons.end()) {
// now check which vertex of the polygon is closest to the ray
unsigned long vertex_index;
SbVec3f closestPoint;
float minDist = self->findClosestPoint(rp.getLine(), it->second, vertex_index, closestPoint);
if (minDist < 1.0f) {
if (self->myNumPoints == 0) {
self->myBoundaryRoot->addChild(node);
self->myVertex->point.set1Value(0, closestPoint);
self->myNumPoints = 1;
self->myVertex1 = vertex_index;
}
else {
// myVertex2 can be equal to myVertex1 which does a full hole-filling
self->myBoundaryRoot->removeChild(node);
self->myVertex->point.set1Value(1, closestPoint);
self->myNumPoints = 2;
self->myVertex2 = vertex_index;
self->myPolygon = it->second;
QTimer::singleShot(300, self, SLOT(closeBridge()));
}
}
}
}
}
else if (mbe->getButton() == SoMouseButtonEvent::BUTTON2 && mbe->getState() == SoButtonEvent::UP) {
QMenu menu;
QAction* fin = menu.addAction(MeshFillHole::tr("Finish"));
QAction* act = menu.exec(QCursor::pos());
if (act == fin) {
QTimer::singleShot(300, self, SLOT(finishEditing()));
}
}
}
}
void MeshSelection::selectGLCallback(void * ud, SoEventCallback * n)
{
// When this callback function is invoked we must leave the edit mode
Gui::View3DInventorViewer* view = reinterpret_cast<Gui::View3DInventorViewer*>(n->getUserData());
MeshSelection* self = reinterpret_cast<MeshSelection*>(ud);
self->stopInteractiveCallback(view);
n->setHandled();
std::vector<SbVec2f> polygon = view->getGLPolygon();
if (polygon.size() < 3)
return;
if (polygon.front() != polygon.back())
polygon.push_back(polygon.front());
SbVec3f pnt, dir;
view->getNearPlane(pnt, dir);
Base::Vector3f point (pnt[0],pnt[1],pnt[2]);
Base::Vector3f normal(dir[0],dir[1],dir[2]);
std::list<ViewProviderMesh*> views = self->getViewProviders();
for (std::list<ViewProviderMesh*>::iterator it = views.begin(); it != views.end(); ++it) {
ViewProviderMesh* vp = static_cast<ViewProviderMesh*>(*it);
std::vector<unsigned long> faces;
const Mesh::MeshObject& mesh = static_cast<Mesh::Feature*>((*it)->getObject())->Mesh.getValue();
const MeshCore::MeshKernel& kernel = mesh.getKernel();
// simply get all triangles under the polygon
SoCamera* cam = view->getCamera();
SbViewVolume vv = cam->getViewVolume();
Gui::ViewVolumeProjection proj(vv);
vp->getFacetsFromPolygon(polygon, proj, true, faces);
if (self->onlyVisibleTriangles) {
const SbVec2s& sz = view->getViewportRegion().getWindowSize();
short width,height; sz.getValue(width,height);
std::vector<SbVec2s> pixelPoly = view->getPolygon();
SbBox2s rect;
for (std::vector<SbVec2s>::iterator it = pixelPoly.begin(); it != pixelPoly.end(); ++it) {
const SbVec2s& p = *it;
rect.extendBy(SbVec2s(p[0],height-p[1]));
}
std::vector<unsigned long> rf; rf.swap(faces);
std::vector<unsigned long> vf = vp->getVisibleFacetsAfterZoom
(rect, view->getViewportRegion(), view->getCamera());
// get common facets of the viewport and the visible one
std::sort(vf.begin(), vf.end());
std::sort(rf.begin(), rf.end());
std::back_insert_iterator<std::vector<unsigned long> > biit(faces);
std::set_intersection(vf.begin(), vf.end(), rf.begin(), rf.end(), biit);
}
// if set filter out all triangles which do not point into user direction
if (self->onlyPointToUserTriangles) {
std::vector<unsigned long> screen;
screen.reserve(faces.size());
MeshCore::MeshFacetIterator it_f(kernel);
for (std::vector<unsigned long>::iterator it = faces.begin(); it != faces.end(); ++it) {
it_f.Set(*it);
if (it_f->GetNormal() * normal > 0.0f) {
screen.push_back(*it);
}
}
faces.swap(screen);
}
if (self->addToSelection)
vp->addSelection(faces);
else
vp->removeSelection(faces);
}
view->render();
}