void D_PAD::GetOblongDrillGeometry( wxPoint& aStartPoint,
wxPoint& aEndPoint, int& aWidth ) const
{
// calculates the start point, end point and width
// of an equivalent segment which have the same position and width as the hole
int delta_cx, delta_cy;
wxSize halfsize = GetDrillSize();
halfsize.x /= 2;
halfsize.y /= 2;
if( m_Drill.x > m_Drill.y ) // horizontal
{
delta_cx = halfsize.x - halfsize.y;
delta_cy = 0;
aWidth = m_Drill.y;
}
else // vertical
{
delta_cx = 0;
delta_cy = halfsize.y - halfsize.x;
aWidth = m_Drill.x;
}
RotatePoint( &delta_cx, &delta_cy, m_Orient );
aStartPoint.x = delta_cx;
aStartPoint.y = delta_cy;
aEndPoint.x = - delta_cx;
aEndPoint.y = - delta_cy;
}
bool D_PAD::BuildPadDrillShapePolygon(
SHAPE_POLY_SET& aCornerBuffer, int aInflateValue, int aError ) const
{
wxSize drillsize = GetDrillSize();
if( !drillsize.x || !drillsize.y )
return false;
if( drillsize.x == drillsize.y ) // usual round hole
{
int radius = ( drillsize.x / 2 ) + aInflateValue;
TransformCircleToPolygon( aCornerBuffer, GetPosition(), radius, aError );
}
else // Oblong hole
{
wxPoint start, end;
int width;
GetOblongDrillGeometry( start, end, width );
width += aInflateValue * 2;
TransformRoundedEndsSegmentToPolygon(
aCornerBuffer, GetPosition() + start, GetPosition() + end, aError, width );
}
return true;
}