void CSVRender::WorldspaceWidget::showToolTip()
{
if (mShowToolTips)
{
QPoint pos = QCursor::pos();
WorldspaceHitResult hit = mousePick (mapFromGlobal (pos), getInteractionMask());
if (hit.tag)
{
bool hideBasics = CSMPrefs::get()["Tooltips"]["scene-hide-basic"].isTrue();
QToolTip::showText (pos, hit.tag->getToolTip (hideBasics), this);
}
}
}
osg::ref_ptr<CSVRender::TagBase> CSVRender::WorldspaceWidget::mousePick (const QPoint& localPos)
{
// (0,0) is considered the lower left corner of an OpenGL window
int x = localPos.x();
int y = height() - localPos.y();
osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector (new osgUtil::LineSegmentIntersector(osgUtil::Intersector::WINDOW, x, y));
intersector->setIntersectionLimit(osgUtil::LineSegmentIntersector::NO_LIMIT);
osgUtil::IntersectionVisitor visitor(intersector);
visitor.setTraversalMask(getInteractionMask());
mView->getCamera()->accept(visitor);
for (osgUtil::LineSegmentIntersector::Intersections::iterator it = intersector->getIntersections().begin();
it != intersector->getIntersections().end(); ++it)
{
osgUtil::LineSegmentIntersector::Intersection intersection = *it;
// reject back-facing polygons
osg::Vec3f normal = intersection.getWorldIntersectNormal();
normal = osg::Matrix::transform3x3(normal, mView->getCamera()->getViewMatrix());
if (normal.z() < 0)
continue;
for (std::vector<osg::Node*>::iterator it = intersection.nodePath.begin(); it != intersection.nodePath.end(); ++it)
{
osg::Node* node = *it;
if (osg::ref_ptr<CSVRender::TagBase> tag = dynamic_cast<CSVRender::TagBase *>(node->getUserData()))
return tag;
}
// ignoring terrain for now
// must be terrain, report coordinates
// std::cout << "Terrain hit at " << intersection.getWorldIntersectPoint().x() << " " << intersection.getWorldIntersectPoint().y() << std::endl;
// return;
}
return osg::ref_ptr<CSVRender::TagBase>();
}
void CSVRender::WorldspaceWidget::handleInteraction(InteractionType type, bool activate)
{
if (activate)
{
if (!mDragging)
mDragMode = type;
}
else
{
mDragMode = InteractionType_None;
if (mDragging)
{
EditMode* editMode = getEditMode();
editMode->dragCompleted(mapFromGlobal(QCursor::pos()));
mDragging = false;
}
else
{
WorldspaceHitResult hit = mousePick(mapFromGlobal(QCursor::pos()), getInteractionMask());
handleInteractionPress(hit, type);
}
}
}
