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

    tmp.SetOrigin( m_origin );
    tmp.SetEnd( m_end );
    tmp.Normalize();
    return tmp;
}
예제 #2
0
const SHAPE_LINE_CHAIN ConvexHull( const SHAPE_CONVEX& aConvex, int aClearance )
{
    // this defines the horizontal and vertical lines in the hull octagon
    BOX2I box = aConvex.BBox( aClearance + HULL_MARGIN );
    box.Normalize();

    SEG topline = SEG( VECTOR2I( box.GetX(), box.GetY() + box.GetHeight() ),
                       VECTOR2I( box.GetX() + box.GetWidth(), box.GetY() + box.GetHeight() ) );
    SEG rightline = SEG( VECTOR2I( box.GetX() + box.GetWidth(), box.GetY() + box.GetHeight() ),
                         VECTOR2I( box.GetX() + box.GetWidth(), box.GetY() ) );
    SEG bottomline = SEG( VECTOR2I( box.GetX() + box.GetWidth(), box.GetY() ),
             box.GetOrigin() );
    SEG leftline = SEG( box.GetOrigin(), VECTOR2I( box.GetX(), box.GetY() + box.GetHeight() ) );

    const SHAPE_LINE_CHAIN& vertices = aConvex.Vertices();

    // top right diagonal
    VECTOR2I corner = box.GetOrigin() + box.GetSize();
    SEG toprightline = SEG( corner,
                            corner + VECTOR2I( box.GetHeight(), -box.GetHeight() ) );
    MoveDiagonal( toprightline, vertices, aClearance );

    // bottom right diagonal
    corner = box.GetOrigin() + VECTOR2I( box.GetWidth(), 0 );
    SEG bottomrightline = SEG( corner + VECTOR2I( box.GetHeight(), box.GetHeight() ),
                               corner );
    MoveDiagonal( bottomrightline, vertices, aClearance );

    // bottom left diagonal
    corner = box.GetOrigin();
    SEG bottomleftline = SEG( corner,
                              corner + VECTOR2I( -box.GetHeight(), box.GetHeight() ) );
    MoveDiagonal( bottomleftline, vertices, aClearance );

    // top left diagonal
    corner = box.GetOrigin() + VECTOR2I( 0, box.GetHeight() );
    SEG topleftline = SEG( corner + VECTOR2I( -box.GetHeight(), -box.GetHeight() ),
                           corner );
    MoveDiagonal( topleftline, vertices, aClearance );

    SHAPE_LINE_CHAIN octagon;
    octagon.SetClosed( true );

    octagon.Append( *leftline.IntersectLines( bottomleftline ) );
    octagon.Append( *bottomline.IntersectLines( bottomleftline ) );
    octagon.Append( *bottomline.IntersectLines( bottomrightline ) );
    octagon.Append( *rightline.IntersectLines( bottomrightline ) );
    octagon.Append( *rightline.IntersectLines( toprightline ) );
    octagon.Append( *topline.IntersectLines( toprightline ) );
    octagon.Append( *topline.IntersectLines( topleftline ) );
    octagon.Append( *leftline.IntersectLines( topleftline ) );

    return octagon;
}