C++ BOX2I类代码示例

int PCBNEW_CONTROL::ZoomFitScreen( const TOOL_EVENT& aEvent )
{
    KIGFX::VIEW* view = getView();
    EDA_DRAW_PANEL_GAL* galCanvas = m_frame->GetGalCanvas();
    BOARD* board = getModel<BOARD>();
    board->ComputeBoundingBox();

    BOX2I boardBBox = board->ViewBBox();
    VECTOR2D scrollbarSize = VECTOR2D( galCanvas->GetSize() - galCanvas->GetClientSize() );
    VECTOR2D screenSize = view->ToWorld( galCanvas->GetClientSize(), false );

    if( boardBBox.GetWidth() == 0 || boardBBox.GetHeight() == 0 )
    {
        // Empty view
        view->SetScale( 17.0 );     // works fine for the standard worksheet frame

        view->SetCenter( screenSize / 2.0 );
    }
    else
    {
        VECTOR2D vsize = boardBBox.GetSize();
        double scale = view->GetScale() / std::max( fabs( vsize.x / screenSize.x ),
                                                    fabs( vsize.y / screenSize.y ) );

        view->SetScale( scale );
        view->SetCenter( boardBBox.Centre() );
    }


    // Take scrollbars into account
    VECTOR2D worldScrollbarSize = view->ToWorld( scrollbarSize, false );
    view->SetCenter( view->GetCenter() + worldScrollbarSize / 2.0 );

    return 0;
}

bool SHAPE_LINE_CHAIN::PointInside( const VECTOR2I& aPt, int aAccuracy ) const
{
    BOX2I bbox = BBox();
    bbox.Inflate( aAccuracy );

    if( !m_closed || PointCount() < 3 || !BBox().Contains( aPt ) )
        return false;

    bool inside = false;

    /**
     * To check for interior points, we draw a line in the positive x direction from
     * the point.  If it intersects an even number of segments, the point is outside the
     * line chain (it had to first enter and then exit).  Otherwise, it is inside the chain.
     *
     * Note: slope might be denormal here in the case of a horizontal line but we require our
     * y to move from above to below the point (or vice versa)
     */
    for( int i = 0; i < PointCount(); i++ )
    {
        const auto p1 = CPoint( i );
        const auto p2 = CPoint( i + 1 ); // CPoint wraps, so ignore counts
        const auto diff = p2 - p1;

        if( diff.y != 0 )
        {
            const int d = rescale( diff.x, ( aPt.y - p1.y ), diff.y );

            if( ( ( p1.y > aPt.y ) != ( p2.y > aPt.y ) ) && ( aPt.x - p1.x < d ) )
                inside = !inside;
        }
    }
    return inside && !PointOnEdge( aPt, aAccuracy );
}

void DIALOG_PAD_PROPERTIES::redraw()
{
    if( m_parent->IsGalCanvasActive() )
    {
        m_dummyPad->ViewUpdate();

        BOX2I bbox = m_dummyPad->ViewBBox();

        if( bbox.GetSize().x > 0 && bbox.GetSize().y > 0 )
        {
            // gives a size to the full drawable area
            BOX2I drawbox;
            drawbox.Move( m_dummyPad->GetPosition() );
            drawbox.Inflate( bbox.GetSize().x*2, bbox.GetSize().y*2 );
            m_panelShowPadGal->GetView()->SetBoundary( drawbox );

            // Autozoom
            m_panelShowPadGal->GetView()->SetViewport( BOX2D( bbox.GetOrigin(), bbox.GetSize() ) );

            // Add a margin
            m_panelShowPadGal->GetView()->SetScale( m_panelShowPadGal->GetView()->GetScale() * 0.7 );

            m_panelShowPadGal->Refresh();
        }
    }
    else
    {
        m_panelShowPad->Refresh();
    }
}

const BOX2I RATSNEST_VIEWITEM::ViewBBox() const
{
    // Make it always visible
    BOX2I bbox;
    bbox.SetMaximum();

    return bbox;
}

const BOX2I DIMENSION::ViewBBox() const
{
    BOX2I dimBBox = BOX2I( VECTOR2I( GetBoundingBox().GetPosition() ),
                           VECTOR2I( GetBoundingBox().GetSize() ) );
    dimBBox.Merge( m_Text.ViewBBox() );

    return dimBBox;
}

const BOX2I RULER_ITEM::ViewBBox() const
{
    BOX2I tmp;

    tmp.SetOrigin( m_origin );
    tmp.SetEnd( m_end );
    tmp.Normalize();
    return tmp;
}

void VIEW::clearGroupCache()
{
    BOX2I r;

    r.SetMaximum();
    clearLayerCache visitor( this );

    for( LAYER_MAP_ITER i = m_layers.begin(); i != m_layers.end(); ++i )
    {
        VIEW_LAYER* l = &( ( *i ).second );
        l->items->Query( r, visitor );
    }
}

const BOX2I VIEW::CalculateExtents()
{
    extentsVisitor v;
    BOX2I fullScene;
    fullScene.SetMaximum();

    for( VIEW_LAYER* l : m_orderedLayers )
    {
        l->items->Query( fullScene, v );
    }

    return v.extents;
}

void VIEW::ChangeLayerDepth( int aLayer, int aDepth )
{
    // There is no point in updating non-cached layers
    if( !IsCached( aLayer ) )
        return;

    BOX2I r;

    r.SetMaximum();

    changeItemsDepth visitor( aLayer, aDepth, m_gal );
    m_layers[aLayer].items->Query( r, visitor );
    MarkTargetDirty( m_layers[aLayer].target );
}

void VIEW::UpdateLayerColor( int aLayer )
{
    // There is no point in updating non-cached layers
    if( !IsCached( aLayer ) )
        return;

    BOX2I r;

    r.SetMaximum();

    updateItemsColor visitor( aLayer, m_painter, m_gal );
    m_layers[aLayer].items->Query( r, visitor );
    MarkTargetDirty( m_layers[aLayer].target );
}

const BOX2I SHAPE_ARC::BBox( int aClearance ) const
{
    BOX2I bbox;
    std::vector<VECTOR2I> points;
    points.push_back( m_pc );
    points.push_back( m_p0 );
    points.push_back( GetP1() );

    bbox.Compute( points );

    if( aClearance != 0 )
        bbox.Inflate( aClearance );

    return bbox;
}

const BOX2I SHAPE_POLY_SET::BBox( int aClearance ) const
{
    BOX2I bb;

    for( unsigned i = 0; i < m_polys.size(); i++ )
    {
        if( i == 0 )
            bb = m_polys[i][0].BBox();
        else
            bb.Merge( m_polys[i][0].BBox() );
    }

    bb.Inflate( aClearance );
    return bb;
}

    void AddBox( BOX2I aB, int aColor )
    {
        SHAPE_LINE_CHAIN l;

        VECTOR2I o = aB.GetOrigin();
        VECTOR2I s = aB.GetSize();

        l.Append( o );
        l.Append( o.x + s.x, o.y );
        l.Append( o.x + s.x, o.y + s.y );
        l.Append( o.x, o.y + s.y );
        l.Append( o );

        AddLine( l, aColor, 10000 );
    }

void DrawDebugBox( BOX2I aB, int aColor )
{
    SHAPE_LINE_CHAIN l;

    VECTOR2I o = aB.GetOrigin();
    VECTOR2I s = aB.GetSize();

    l.Append( o );
    l.Append( o.x + s.x, o.y );
    l.Append( o.x + s.x, o.y + s.y );
    l.Append( o.x, o.y + s.y );
    l.Append( o );

    ROUTER::GetInstance()->DisplayDebugLine( l, aColor, 10000 );
}

bool GERBVIEW_SELECTION_TOOL::selectionContains( const VECTOR2I& aPoint ) const
{
    const unsigned GRIP_MARGIN = 20;
    VECTOR2D margin = getView()->ToWorld( VECTOR2D( GRIP_MARGIN, GRIP_MARGIN ), false );

    // Check if the point is located within any of the currently selected items bounding boxes
    for( auto item : m_selection )
    {
        BOX2I itemBox = item->ViewBBox();
        itemBox.Inflate( margin.x, margin.y );    // Give some margin for gripping an item

        if( itemBox.Contains( aPoint ) )
            return true;
    }

    return false;
}