Method hover_

source/MRViewer/MRObjectTransformWidget.cpp:700–802

}

ControlBit TransformControls::hover_( bool pickThrough )
{
    int hoveredInd = findHoveredIndex_();

    auto& linesArray = hoveredInd < 3 ? translateLines_ : rotateLines_;
    if ( hoveredInd > 2 )
        hoveredInd -= 3;

    auto dropCurrentObj = [&] ()
    {
        if ( hoveredObject_ )
        {
            auto color = hoveredObject_->getFrontColor( true );
            hoveredObject_->setFrontColor( color, false );
            assert( hoveredInd >= 0 );
            linesArray[hoveredInd]->setFrontColor( params_.helperLineColor, false );
            linesArray[hoveredInd]->setLineWidth( 1.0f );
        }
        hoveredObject_.reset();
        hoveredInd = -1;
    };

    std::vector<VisualObject*> objsToPick_;
    objsToPick_.reserve( 6 );
    auto hoveredViewportId = getViewerInstance().getHoveredViewportId();

    if ( pickThrough )
    {
        for ( auto obj : translateControls_ )
        {
            if ( obj->isVisible( hoveredViewportId ) )
                objsToPick_.push_back( obj.get() );
        }
        for ( auto obj : rotateControls_ )
        {
            if ( obj->isVisible( hoveredViewportId ) )
                objsToPick_.push_back( obj.get() );
        }
    }

    const auto& vp = getViewerInstance().viewport( hoveredViewportId );

    auto [obj, pick] = pickThrough ? vp.pickRenderObject( objsToPick_ ) : vp.pick_render_object();
    if ( !obj )
    {
        dropCurrentObj();
        return ControlBit::None;
    }
    auto meshObj = std::dynamic_pointer_cast< ObjectMesh >( obj );
    if ( !meshObj )
    {
        dropCurrentObj();
        return ControlBit::None;
    }
    bool isControl = meshObj->parent() == translateControls_[0]->parent();
    if ( !isControl )
    {
        dropCurrentObj();