bool ViewProviderMeshNode::handleEvent(const SoEvent * const ev,Gui::View3DInventorViewer &Viewer)
{
if ( m_bEdit )
{
unsetEdit();
std::vector<SbVec2f> clPoly = Viewer.getPickedPolygon();
if ( clPoly.size() < 3 )
return true;
if ( clPoly.front() != clPoly.back() )
clPoly.push_back(clPoly.front());
// get the normal of the front clipping plane
SbVec3f b,n;
Viewer.getNearPlane(b, n);
Base::Vector3f cPoint(b[0],b[1],b[2]), cNormal(n[0],n[1],n[2]);
SoCamera* pCam = Viewer.getCamera();
SbViewVolume vol = pCam->getViewVolume ();
// create a tool shape from these points
std::vector<MeshCore::MeshGeomFacet> aFaces;
bool ok = ViewProviderMesh::createToolMesh( clPoly, vol, cNormal, aFaces );
// Get the attached mesh property
Mesh::PropertyMeshKernel& meshProp = ((Mesh::Feature*)pcObject)->Mesh;
// Get the facet indices inside the tool mesh
std::vector<unsigned long> indices;
MeshCore::MeshKernel cToolMesh;
cToolMesh = aFaces;
MeshCore::MeshFacetGrid cGrid(meshProp.getValue().getKernel());
MeshCore::MeshAlgorithm cAlg(meshProp.getValue().getKernel());
cAlg.GetFacetsFromToolMesh(cToolMesh, cNormal, cGrid, indices);
meshProp.deleteFacetIndices( indices );
// update open edge display if needed
// if ( pcOpenEdge )
// {
// showOpenEdges(false);
// showOpenEdges(true);
// }
Viewer.render();
if ( !ok ) // note: the mouse grabbing needs to be released
//QMessageBox::warning(Viewer.getWidget(),"Invalid polygon","The picked polygon seems to have self-overlappings.\n\nThis could lead to strange rersults.");
Base::Console().Message("The picked polygon seems to have self-overlappings. This could lead to strange results.");
}
return false;
}
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();
}
