C++ SCH_ITEM::GetConnectionPoints方法代码示例

void SCH_EDIT_FRAME::CheckListConnections( PICKED_ITEMS_LIST& aItemsList, bool aAppend )
{
    std::vector< wxPoint > pts;
    std::vector< wxPoint > connections;

    GetSchematicConnections( connections );
    for( unsigned ii = 0; ii < aItemsList.GetCount(); ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*) aItemsList.GetPickedItem( ii );
        std::vector< wxPoint > new_pts;

        if( !item->IsConnectable() )
            continue;

        item->GetConnectionPoints( new_pts );
        pts.insert( pts.end(), new_pts.begin(), new_pts.end() );

        // If the item is a line, we also add any connection points from the rest of the schematic
        // that terminate on the line after it is moved.
        if( item->Type() == SCH_LINE_T )
        {
            SCH_LINE* line = (SCH_LINE*) item;
            for( auto i : connections )
                if( IsPointOnSegment( line->GetStartPoint(), line->GetEndPoint(), i ) )
                    pts.push_back( i );
        }
        else
        {
            // Clean up any wires that short non-wire connections in the list
            for( auto point = new_pts.begin(); point != new_pts.end(); point++ )
            {
                for( auto second_point = point + 1; second_point != new_pts.end(); second_point++ )
                {
                    aAppend |= TrimWire( *point, *second_point, aAppend );
                }
            }
        }
    }

    // We always have some overlapping connection points.  Drop duplicates here
    std::sort( pts.begin(), pts.end(),
            []( const wxPoint& a, const wxPoint& b ) -> bool
            { return a.x < b.x || (a.x == b.x && a.y < b.y); } );
    pts.erase( unique( pts.begin(), pts.end() ), pts.end() );

    for( auto point : pts )
    {
        if( GetScreen()->IsJunctionNeeded( point, true ) )
        {
            AddJunction( point, aAppend );
            aAppend = true;
        }
    }
}

void SCH_SCREEN::SelectBlockItems()
{
    PICKED_ITEMS_LIST* pickedlist = &m_BlockLocate.GetItems();

    if( pickedlist->GetCount() == 0 )
        return;

    ClearDrawingState();

    for( unsigned ii = 0; ii < pickedlist->GetCount(); ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*) pickedlist->GetPickedItem( ii );
        item->SetFlags( SELECTED );
    }

    if( !m_BlockLocate.IsDragging() )
        return;

    // Select all the items in the screen connected to the items in the block.
    // be sure end lines that are on the block limits are seen inside this block
    m_BlockLocate.Inflate( 1 );
    unsigned last_select_id = pickedlist->GetCount();

    for( unsigned ii = 0; ii < last_select_id; ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*)pickedlist->GetPickedItem( ii );
        item->SetFlags( IS_DRAGGED );

        if( item->Type() == SCH_LINE_T )
        {
            item->IsSelectStateChanged( m_BlockLocate );

            if( !item->IsSelected() )
            {   // This is a special case:
                // this selected wire has no ends in block.
                // But it was selected (because it intersects the selecting area),
                // so we must keep it selected and select items connected to it
                // Note: an other option could be: remove it from drag list
                item->SetFlags( SELECTED | SKIP_STRUCT );
                std::vector< wxPoint > connections;
                item->GetConnectionPoints( connections );

                for( size_t i = 0; i < connections.size(); i++ )
                    addConnectedItemsToBlock( connections[i] );
            }

            pickedlist->SetPickerFlags( item->GetFlags(), ii );
        }
        else if( item->IsConnectable() )
        {
            std::vector< wxPoint > connections;

            item->GetConnectionPoints( connections );

            for( size_t jj = 0; jj < connections.size(); jj++ )
                addConnectedItemsToBlock( connections[jj] );
        }
    }

    m_BlockLocate.Inflate( -1 );
}

void SCH_SCREEN::addConnectedItemsToBlock( const SCH_ITEM* aItem, const wxPoint& position )
{
    SCH_ITEM* item;
    ITEM_PICKER picker;

    for( item = m_drawList.begin(); item; item = item->Next() )
    {

        if( !item->IsConnectable() || ( item->GetFlags() & SKIP_STRUCT )
                || !item->CanConnect( aItem ) || item == aItem )
            continue;

        // A line having 2 ends, it can be tested twice: one time per end
        if( item->Type() == SCH_LINE_T )
        {
            SCH_LINE* line = (SCH_LINE*) item;

            if( !item->HitTest( position ) )
                continue;

            // First time through.  Flags set to denote an end that is not moving
            if( !item->IsSelected() )
                item->SetFlags( CANDIDATE | STARTPOINT | ENDPOINT );

            if( line->GetStartPoint() == position )
                item->ClearFlags( STARTPOINT );
            else if( line->GetEndPoint() == position )
                item->ClearFlags( ENDPOINT );
            else
                // This picks up items such as labels that can connect to the middle of a line
                item->ClearFlags( STARTPOINT | ENDPOINT );
        }
        // We want to move a mid-connected label or bus entry when the full line is being moved
        else if( !item->IsSelected()
                && aItem->Type() == SCH_LINE_T
                && !( aItem->GetFlags() & ( ENDPOINT | STARTPOINT ) ) )
        {
            std::vector< wxPoint > connections;
            item->GetConnectionPoints( connections );

            for( auto conn : connections )
            {
                if( aItem->HitTest( conn ) )
                {
                    item->SetFlags( CANDIDATE );
                    break;
                }
            }
        }

        if( item->IsSelected() )
            continue;

        if( ( item->GetFlags() & CANDIDATE ) || item->IsConnected( position ) ) // Deal with all non-line items
        {
            item->ClearFlags( CANDIDATE );
            item->SetFlags( SELECTED );
            picker.SetItem( item );
            picker.SetFlags( item->GetFlags() );
            m_BlockLocate.GetItems().PushItem( picker );
        }
    }
}