Exemplo n.º 1
0
SHAPE_LINE_CHAIN PNS_MEANDER_SHAPE::circleQuad( VECTOR2D aP, VECTOR2D aDir, bool aSide )
{
    SHAPE_LINE_CHAIN lc;

    if( aDir.EuclideanNorm( ) == 0.0f )
    {
        lc.Append( aP );
        return lc;
    }

    VECTOR2D dir_u( aDir );
    VECTOR2D dir_v( aDir.Perpendicular( ) );

    const int ArcSegments = Settings().m_cornerArcSegments;

    for( int i = ArcSegments - 1; i >= 0; i-- )
    {
        VECTOR2D p;
        double alpha = (double) i / (double) ( ArcSegments - 1 ) * M_PI / 2.0;
        p = aP + dir_u * cos( alpha ) + dir_v * ( aSide ? -1.0 : 1.0 ) * ( 1.0 - sin( alpha ) );
        lc.Append( ( int ) p.x, ( int ) p.y );
    }

    return lc;
}
Exemplo n.º 2
0
SHAPE_LINE_CHAIN PNS_MEANDER_SHAPE::circleQuad( VECTOR2D aP, VECTOR2D aDir, bool aSide )
{
    SHAPE_LINE_CHAIN lc;

    if( aDir.EuclideanNorm( ) == 0.0f )
    {
        lc.Append( aP );
        return lc;
    }

    VECTOR2D dir_u( aDir );
    VECTOR2D dir_v( aDir.Perpendicular( ) );

    const int ArcSegments = Settings().m_cornerArcSegments;

    double radius = (double) aDir.EuclideanNorm();
    double angleStep = M_PI / 2.0 / (double) ArcSegments;

    double correction = 12.0 * radius * ( 1.0 - cos( angleStep / 2.0 ) );

    if( !m_dual )
        correction = 0.0;
    else if( radius < m_meanCornerRadius )
        correction = 0.0;

    VECTOR2D p = aP;
    lc.Append( ( int ) p.x, ( int ) p.y );

    VECTOR2D dir_uu = dir_u.Resize( radius - correction );
    VECTOR2D dir_vv = dir_v.Resize( radius - correction );

    VECTOR2D shift = dir_u.Resize( correction );

    for( int i = ArcSegments - 1; i >= 0; i-- )
    {
        double alpha = (double) i / (double) ( ArcSegments - 1 ) * M_PI / 2.0;
        p = aP + shift + dir_uu * cos( alpha ) + dir_vv * ( aSide ? -1.0 : 1.0 ) * ( 1.0 - sin( alpha ) );
        lc.Append( ( int ) p.x, ( int ) p.y );
    }

    p = aP + dir_u + dir_v * ( aSide ? -1.0 : 1.0 );
    lc.Append( ( int ) p.x, ( int ) p.y );

    return lc;
}