// Create CPolyLine for a pad
//
CPolyLine * CPolyLine::MakePolylineForPad( int type, int x, int y, int w, int l, int r, int angle )
{
CPolyLine * poly = new CPolyLine;
int dx = l/2;
int dy = w/2;
if( angle%180 == 90 )
{
dx = w/2;
dy = l/2;
}
if( type == PAD_ROUND )
{
poly->Start( 0, 0, 0, x-dx, y, 0, NULL, NULL );
poly->AppendCorner( x, y+dy, ARC_CW, 0 );
poly->AppendCorner( x+dx, y, ARC_CW, 0 );
poly->AppendCorner( x, y-dy, ARC_CW, 0 );
poly->Close( ARC_CW );
}
return poly;
}
// Use the General Polygon Clipping Library to clip contours
// If this results in new polygons, return them as CArray p
// If bRetainArcs == TRUE, try to retain arcs in polys
// Returns number of external contours, or -1 if error
//
int CPolyLine::NormalizeWithGpc( CArray<CPolyLine*> * pa, BOOL bRetainArcs )
{
CArray<CArc> arc_array;
if( bRetainArcs )
MakeGpcPoly( -1, &arc_array );
else
MakeGpcPoly( -1, NULL );
Undraw();
// now, recreate poly
// first, find outside contours and create new CPolyLines if necessary
int n_ext_cont = 0;
for( int ic=0; ic<m_gpc_poly->num_contours; ic++ )
{
if( !(m_gpc_poly->hole)[ic] )
{
if( n_ext_cont == 0 )
{
// first external contour, replace this poly
corner.RemoveAll();
side_style.RemoveAll();
m_ncorners = 0;
for( int i=0; i<m_gpc_poly->contour[ic].num_vertices; i++ )
{
int x = ((m_gpc_poly->contour)[ic].vertex)[i].x;
int y = ((m_gpc_poly->contour)[ic].vertex)[i].y;
if( i==0 )
Start( m_layer, m_w, m_sel_box, x, y, m_hatch, &m_id, m_ptr );
else
AppendCorner( x, y, STRAIGHT, FALSE );
}
Close();
n_ext_cont++;
}
else if( pa )
{
// next external contour, create new poly
CPolyLine * poly = new CPolyLine;
pa->SetSize(n_ext_cont); // put in array
(*pa)[n_ext_cont-1] = poly;
for( int i=0; i<m_gpc_poly->contour[ic].num_vertices; i++ )
{
int x = ((m_gpc_poly->contour)[ic].vertex)[i].x;
int y = ((m_gpc_poly->contour)[ic].vertex)[i].y;
if( i==0 )
poly->Start( m_layer, m_w, m_sel_box, x, y, m_hatch, &m_id, m_ptr );
else
poly->AppendCorner( x, y, STRAIGHT, FALSE );
}
poly->Close( STRAIGHT, FALSE );
n_ext_cont++;
}
}
}
// now add cutouts to the CPolyLine(s)
for( int ic=0; ic<m_gpc_poly->num_contours; ic++ )
{
if( (m_gpc_poly->hole)[ic] )
{
CPolyLine * ext_poly = NULL;
if( n_ext_cont == 1 )
{
ext_poly = this;
}
else
{
// find the polygon that contains this hole
for( int i=0; i<m_gpc_poly->contour[ic].num_vertices; i++ )
{
int x = ((m_gpc_poly->contour)[ic].vertex)[i].x;
int y = ((m_gpc_poly->contour)[ic].vertex)[i].y;
if( TestPointInside( x, y ) )
ext_poly = this;
else
{
for( int ext_ic=0; ext_ic<n_ext_cont-1; ext_ic++ )
{
if( (*pa)[ext_ic]->TestPointInside( x, y ) )
{
ext_poly = (*pa)[ext_ic];
break;
}
}
}
if( ext_poly )
break;
}
}
if( !ext_poly )
ASSERT(0);
for( int i=0; i<m_gpc_poly->contour[ic].num_vertices; i++ )
{
int x = ((m_gpc_poly->contour)[ic].vertex)[i].x;
int y = ((m_gpc_poly->contour)[ic].vertex)[i].y;
ext_poly->AppendCorner( x, y, STRAIGHT, FALSE );
}
ext_poly->Close( STRAIGHT, FALSE );
}
}
if( bRetainArcs )
RestoreArcs( &arc_array, pa );
FreeGpcPoly();
return n_ext_cont;
}