/**
* Function NormalizeAreaOutlines
* Convert a self-intersecting polygon to one (or more) non self-intersecting polygon(s)
* @param aNewPolygonList = a std::vector<CPolyLine*> reference where to store new CPolyLine
* needed by the normalization
* @return the polygon count (always >= 1, because there is at least one polygon)
* There are new polygons only if the polygon count is > 1
*/
int CPolyLine::NormalizeAreaOutlines( std::vector<CPolyLine*>* aNewPolygonList )
{
SHAPE_POLY_SET polySet = ConvertPolyListToPolySet( m_CornersList );
// We are expecting only one main outline, but this main outline can have holes
// if holes: combine holes and remove them from the main outline.
// Note also we are using SHAPE_POLY_SET::PM_STRICTLY_SIMPLE in polygon
// calculations, but it is not mandatory. It is used mainly
// because there is usually only very few vertices in area outlines
SHAPE_POLY_SET::POLYGON& outline = polySet.Polygon( 0 );
SHAPE_POLY_SET holesBuffer;
// Move holes stored in outline to holesBuffer:
// The first SHAPE_LINE_CHAIN is the main outline, others are holes
while( outline.size() > 1 )
{
holesBuffer.AddOutline( outline.back() );
outline.pop_back();
}
polySet.Simplify( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE);
// If any hole, substract it to main outline
if( holesBuffer.OutlineCount() )
{
holesBuffer.Simplify( SHAPE_POLY_SET::PM_FAST);
polySet.BooleanSubtract( holesBuffer, SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
}
RemoveAllContours();
// Note: we can have more than outline, because a self intersecting outline will be
// broken to non intersecting polygons, and removing holes can also create a few polygons
for( int ii = 0; ii < polySet.OutlineCount(); ii++ )
{
CPolyLine* polyline = this;
if( ii > 0 )
{
polyline = new CPolyLine;
polyline->ImportSettings( this );
aNewPolygonList->push_back( polyline );
}
SHAPE_POLY_SET pnew;
pnew.NewOutline();
pnew.Polygon( 0 ) = polySet.CPolygon( ii );
polyline->m_CornersList = ConvertPolySetToPolyList( pnew );
}
return polySet.OutlineCount();
}
bool BOARD::CombineAreas( PICKED_ITEMS_LIST* aDeletedList, ZONE_CONTAINER* area_ref,
ZONE_CONTAINER* area_to_combine )
{
if( area_ref == area_to_combine )
{
wxASSERT( 0 );
return false;
}
SHAPE_POLY_SET mergedOutlines = ConvertPolyListToPolySet( area_ref->Outline()->m_CornersList );
SHAPE_POLY_SET areaToMergePoly = ConvertPolyListToPolySet( area_to_combine->Outline()->m_CornersList );
mergedOutlines.BooleanAdd( areaToMergePoly );
mergedOutlines.Simplify();
// We should have one polygon with hole
// We can have 2 polygons with hole, if the 2 initial polygons have only one common corner
// and therefore cannot be merged (they are dectected as intersecting)
// but we should never have more than 2 polys
if( mergedOutlines.OutlineCount() > 2 )
{
wxLogMessage(wxT("BOARD::CombineAreas error: more than 2 polys after merging") );
return false;
}
if( mergedOutlines.OutlineCount() > 1 )
return false;
area_ref->Outline()->m_CornersList = ConvertPolySetToPolyList( mergedOutlines );
RemoveArea( aDeletedList, area_to_combine );
area_ref->SetLocalFlags( 1 );
area_ref->Outline()->Hatch();
return true;
}
void ZONE_CONTAINER::AddClearanceAreasPolygonsToPolysList_NG( BOARD* aPcb )
{
int segsPerCircle;
double correctionFactor;
int outline_half_thickness = m_ZoneMinThickness / 2;
std::unique_ptr<SHAPE_FILE_IO> dumper( new SHAPE_FILE_IO(
g_DumpZonesWhenFilling ? "zones_dump.txt" : "", SHAPE_FILE_IO::IOM_APPEND ) );
// Set the number of segments in arc approximations
if( m_ArcToSegmentsCount == ARC_APPROX_SEGMENTS_COUNT_HIGHT_DEF )
segsPerCircle = ARC_APPROX_SEGMENTS_COUNT_HIGHT_DEF;
else
segsPerCircle = ARC_APPROX_SEGMENTS_COUNT_LOW_DEF;
/* calculates the coeff to compensate radius reduction of holes clearance
* due to the segment approx.
* For a circle the min radius is radius * cos( 2PI / s_CircleToSegmentsCount / 2)
* s_Correction is 1 /cos( PI/s_CircleToSegmentsCount )
*/
correctionFactor = 1.0 / cos( M_PI / (double) segsPerCircle );
CPOLYGONS_LIST tmp;
if(g_DumpZonesWhenFilling)
dumper->BeginGroup("clipper-zone");
SHAPE_POLY_SET solidAreas = ConvertPolyListToPolySet( m_smoothedPoly->m_CornersList );
solidAreas.Inflate( -outline_half_thickness, segsPerCircle );
solidAreas.Simplify( POLY_CALC_MODE );
SHAPE_POLY_SET holes;
if(g_DumpZonesWhenFilling)
dumper->Write( &solidAreas, "solid-areas" );
tmp.RemoveAllContours();
buildFeatureHoleList( aPcb, holes );
if(g_DumpZonesWhenFilling)
dumper->Write( &holes, "feature-holes" );
holes.Simplify( POLY_CALC_MODE );
if (g_DumpZonesWhenFilling)
dumper->Write( &holes, "feature-holes-postsimplify" );
solidAreas.BooleanSubtract( holes, POLY_CALC_MODE );
if (g_DumpZonesWhenFilling)
dumper->Write( &solidAreas, "solid-areas-minus-holes" );
SHAPE_POLY_SET areas_fractured = solidAreas;
areas_fractured.Fracture( POLY_CALC_MODE );
if (g_DumpZonesWhenFilling)
dumper->Write( &areas_fractured, "areas_fractured" );
m_FilledPolysList = areas_fractured;
// Remove insulated islands:
if( GetNetCode() > 0 )
TestForCopperIslandAndRemoveInsulatedIslands( aPcb );
SHAPE_POLY_SET thermalHoles;
// Test thermal stubs connections and add polygons to remove unconnected stubs.
// (this is a refinement for thermal relief shapes)
if( GetNetCode() > 0 )
BuildUnconnectedThermalStubsPolygonList( thermalHoles, aPcb, this,
correctionFactor, s_thermalRot );
// remove copper areas corresponding to not connected stubs
if( !thermalHoles.IsEmpty() )
{
thermalHoles.Simplify( POLY_CALC_MODE );
// Remove unconnected stubs
solidAreas.BooleanSubtract( thermalHoles, POLY_CALC_MODE );
if( g_DumpZonesWhenFilling )
dumper->Write( &thermalHoles, "thermal-holes" );
// put these areas in m_FilledPolysList
SHAPE_POLY_SET th_fractured = solidAreas;
th_fractured.Fracture( POLY_CALC_MODE );
if( g_DumpZonesWhenFilling )
dumper->Write ( &th_fractured, "th_fractured" );
m_FilledPolysList = th_fractured;
if( GetNetCode() > 0 )
TestForCopperIslandAndRemoveInsulatedIslands( aPcb );
}
if(g_DumpZonesWhenFilling)
dumper->EndGroup();
}
