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/**
* @file zones_test_and_combine_areas.cpp
* @brief Functions to test, merge and cut polygons used as copper areas outlines
* some pieces of code come from FreePCB.
*/
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
* Copyright (C) 1992-2012 KiCad Developers, see AUTHORS.txt for contributors.
*
* Some code comes from FreePCB.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <fctsys.h>
#include <common.h>
#include <confirm.h>
#include <class_undoredo_container.h>
#include <class_board.h>
#include <class_zone.h>
#include <class_marker_pcb.h>
#include <pcbnew.h>
#include <drc_stuff.h>
#include <math_for_graphics.h>
#define STRAIGHT 0 // To be remove after math_for_graphics code cleanup
bool BOARD::OnAreaPolygonModified( PICKED_ITEMS_LIST* aModifiedZonesList,
ZONE_CONTAINER* modified_area )
{
// clip polygon against itself
bool modified = NormalizeAreaPolygon( aModifiedZonesList, modified_area );
// now see if we need to clip against other areas
LAYER_NUM layer = modified_area->GetLayer();
bool bCheckAllAreas = TestAreaIntersections( modified_area );
if( bCheckAllAreas )
{
modified = true;
CombineAllAreasInNet( aModifiedZonesList, modified_area->GetNet(), true );
}
if( layer >= FIRST_NON_COPPER_LAYER ) // Refill non copper zones on this layer
{
for( unsigned ia = 0; ia < m_ZoneDescriptorList.size(); ia++ )
if( m_ZoneDescriptorList[ia]->GetLayer() == layer )
m_ZoneDescriptorList[ia]->BuildFilledPolysListData( this );
}
// Test for bad areas: all zones must have more than 2 corners:
// Note: should not happen, but just in case.
for( unsigned ii = 0; ii < m_ZoneDescriptorList.size(); )
{
ZONE_CONTAINER* zone = m_ZoneDescriptorList[ii];
if( zone->GetNumCorners() >= 3 )
ii++;
else // Remove zone because it is incorrect:
RemoveArea( aModifiedZonesList, zone );
}
return modified;
}
bool BOARD::CombineAllAreasInNet( PICKED_ITEMS_LIST* aDeletedList, int aNetCode,
bool aUseLocalFlags )
{
if( m_ZoneDescriptorList.size() <= 1 )
return false;
bool modified = false;
//Loop through all combinations
for( unsigned ia1 = 0; ia1 < m_ZoneDescriptorList.size() - 1; ia1++ )
{
ZONE_CONTAINER* curr_area = m_ZoneDescriptorList[ia1];
if( curr_area->GetNet() != aNetCode )
continue;
// legal polygon
CRect b1 = curr_area->Outline()->GetCornerBounds();
bool mod_ia1 = false;
for( unsigned ia2 = m_ZoneDescriptorList.size() - 1; ia2 > ia1; ia2-- )
{
ZONE_CONTAINER* area2 = m_ZoneDescriptorList[ia2];
if( area2->GetNet() != aNetCode )
continue;
if( curr_area->GetPriority() != area2->GetPriority() )
continue;
if( curr_area->GetIsKeepout() != area2->GetIsKeepout() )
continue;
if( curr_area->GetLayer() != area2->GetLayer() )
continue;
CRect b2 = area2->Outline()->GetCornerBounds();
if( !( b1.left > b2.right || b1.right < b2.left
|| b1.bottom > b2.top || b1.top < b2.bottom ) )
{
// check area2 against curr_area
if( curr_area->GetLocalFlags() || area2->GetLocalFlags()
|| aUseLocalFlags == false )
{
bool ret = TestAreaIntersection( curr_area, area2 );
if( ret )
ret = CombineAreas( aDeletedList, curr_area, area2 );
if( ret )
{
mod_ia1 = true;
modified = true;
}
}
}
}
if( mod_ia1 )
ia1--; // if modified, we need to check it again
}
return modified;
}
bool BOARD::TestAreaIntersections( ZONE_CONTAINER* area_to_test )
{
for( unsigned ia2 = 0; ia2 < m_ZoneDescriptorList.size(); ia2++ )
{
ZONE_CONTAINER* area2 = m_ZoneDescriptorList[ia2];
if( area_to_test->GetNet() != area2->GetNet() )
continue;
if( area_to_test == area2 )
continue;
// see if areas are on same layer
if( area_to_test->GetLayer() != area2->GetLayer() )
continue;
// test for different priorities
if( area_to_test->GetPriority() != area2->GetPriority() )
continue;
// test for different types
if( area_to_test->GetIsKeepout() != area2->GetIsKeepout() )
continue;
if( TestAreaIntersection( area_to_test, area2 ) )
return true;
}
return false;
}
bool BOARD::TestAreaIntersection( ZONE_CONTAINER* area_ref, ZONE_CONTAINER* area_to_test )
{
// see if areas are on same layer
if( area_ref->GetLayer() != area_to_test->GetLayer() )
return false;
CPolyLine* poly1 = area_ref->Outline();
CPolyLine* poly2 = area_to_test->Outline();
// test bounding rects
CRect b1 = poly1->GetCornerBounds();
CRect b2 = poly2->GetCornerBounds();
if( b1.bottom > b2.top || b1.top < b2.bottom ||
b1.left > b2.right || b1.right < b2.left )
return false;
// now test for intersecting segments
for( int icont1 = 0; icont1<poly1->GetContoursCount(); icont1++ )
{
int is1 = poly1->GetContourStart( icont1 );
int ie1 = poly1->GetContourEnd( icont1 );
for( int ic1 = is1; ic1<=ie1; ic1++ )
{
int xi1 = poly1->GetX( ic1 );
int yi1 = poly1->GetY( ic1 );
int xf1, yf1;
if( ic1 < ie1 )
{
xf1 = poly1->GetX( ic1 + 1 );
yf1 = poly1->GetY( ic1 + 1 );
}
else
{
xf1 = poly1->GetX( is1 );
yf1 = poly1->GetY( is1 );
}
for( int icont2 = 0; icont2<poly2->GetContoursCount(); icont2++ )
{
int is2 = poly2->GetContourStart( icont2 );
int ie2 = poly2->GetContourEnd( icont2 );
for( int ic2 = is2; ic2<=ie2; ic2++ )
{
int xi2 = poly2->GetX( ic2 );
int yi2 = poly2->GetY( ic2 );
int xf2, yf2;
if( ic2 < ie2 )
{
xf2 = poly2->GetX( ic2 + 1 );
yf2 = poly2->GetY( ic2 + 1 );
}
else
{
xf2 = poly2->GetX( is2 );
yf2 = poly2->GetY( is2 );
}
bool intersect = FindSegmentIntersections( xi1, yi1, xf1, yf1,
xi2, yi2, xf2, yf2 );
if( intersect )
return true;
}
}
}
}
// If a contour is inside an other contour, no segments intersects, but the zones
// can be combined if a corner is inside an outline (only one corner is enought)
for( int ic2 = 0; ic2 < poly2->GetNumCorners(); ic2++ )
{
int x = poly2->GetX( ic2 );
int y = poly2->GetY( ic2 );
if( poly1->TestPointInside( x, y ) )
{
return true;
}
}
for( int ic1 = 0; ic1 < poly1->GetNumCorners(); ic1++ )
{
int x = poly1->GetX( ic1 );
int y = poly1->GetY( ic1 );
if( poly2->TestPointInside( x, y ) )
{
return true;
}
}
return false;
}
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;
}
// polygons intersect, combine them
KI_POLYGON_WITH_HOLES areaRefPoly;
KI_POLYGON_WITH_HOLES areaToMergePoly;
CopyPolysListToKiPolygonWithHole( area_ref->Outline()->m_CornersList, areaRefPoly );
CopyPolysListToKiPolygonWithHole( area_to_combine->Outline()->m_CornersList, areaToMergePoly );
KI_POLYGON_WITH_HOLES_SET mergedOutlines;
mergedOutlines.push_back( areaRefPoly );
mergedOutlines |= areaToMergePoly;
// 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.size() > 2 )
{
wxLogMessage(wxT("BOARD::CombineAreas error: more than 2 polys after merging") );
return false;
}
if( mergedOutlines.size() > 1 )
return false;
areaRefPoly = mergedOutlines[0];
area_ref->Outline()->RemoveAllContours();
KI_POLYGON_WITH_HOLES::iterator_type corner = areaRefPoly.begin();
// create area with external contour: Recreate only area edges, NOT holes
area_ref->Outline()->Start( area_ref->GetLayer(), corner->x(), corner->y(),
area_ref->Outline()->GetHatchStyle() );
while( ++corner != areaRefPoly.end() )
{
area_ref->Outline()->AppendCorner( corner->x(), corner->y() );
}
area_ref->Outline()->CloseLastContour();
// add holes (set of polygons)
KI_POLYGON_WITH_HOLES::iterator_holes_type hole = areaRefPoly.begin_holes();
while( hole != areaRefPoly.end_holes() )
{
KI_POLYGON::iterator_type hole_corner = hole->begin();
// create area with external contour: Recreate only area edges, NOT holes
while( hole_corner != hole->end() )
{
area_ref->Outline()->AppendCorner( hole_corner->x(), hole_corner->y() );
hole_corner++;
}
area_ref->Outline()->CloseLastContour();
hole++;
}
RemoveArea( aDeletedList, area_to_combine );
area_ref->SetLocalFlags( 1 );
area_ref->Outline()->Hatch();
return true;
}
int BOARD::Test_Drc_Areas_Outlines_To_Areas_Outlines( ZONE_CONTAINER* aArea_To_Examine,
bool aCreate_Markers )
{
wxString str;
int nerrors = 0;
// iterate through all areas
for( int ia = 0; ia < GetAreaCount(); ia++ )
{
ZONE_CONTAINER* Area_Ref = GetArea( ia );
CPolyLine* refSmoothedPoly = Area_Ref->GetSmoothedPoly();
if( !Area_Ref->IsOnCopperLayer() )
continue;
// When testing only a single area, skip all others
if( aArea_To_Examine && (aArea_To_Examine != Area_Ref) )
continue;
for( int ia2 = 0; ia2 < GetAreaCount(); ia2++ )
{
ZONE_CONTAINER* area_to_test = GetArea( ia2 );
CPolyLine* testSmoothedPoly = area_to_test->GetSmoothedPoly();
if( Area_Ref == area_to_test )
continue;
// test for same layer
if( Area_Ref->GetLayer() != area_to_test->GetLayer() )
continue;
// Test for same net
if( Area_Ref->GetNet() == area_to_test->GetNet() && Area_Ref->GetNet() >= 0 )
continue;
// test for different priorities
if( Area_Ref->GetPriority() != area_to_test->GetPriority() )
continue;
// test for different types
if( Area_Ref->GetIsKeepout() != area_to_test->GetIsKeepout() )
continue;
// Examine a candidate zone: compare area_to_test to Area_Ref
// Get clearance used in zone to zone test. The policy used to
// obtain that value is now part of the zone object itself by way of
// ZONE_CONTAINER::GetClearance().
int zone2zoneClearance = Area_Ref->GetClearance( area_to_test );
// Keepout areas have no clearance, so set zone2zoneClearance to 1
// ( zone2zoneClearance = 0 can create problems in test functions)
if( Area_Ref->GetIsKeepout() )
zone2zoneClearance = 1;
// test for some corners of Area_Ref inside area_to_test
for( int ic = 0; ic < refSmoothedPoly->GetNumCorners(); ic++ )
{
int x = refSmoothedPoly->GetX( ic );
int y = refSmoothedPoly->GetY( ic );
if( testSmoothedPoly->TestPointInside( x, y ) )
{
// COPPERAREA_COPPERAREA error: copper area ref corner inside copper area
if( aCreate_Markers )
{
wxString msg1 = Area_Ref->GetSelectMenuText();
wxString msg2 = area_to_test->GetSelectMenuText();
MARKER_PCB* marker = new MARKER_PCB( COPPERAREA_INSIDE_COPPERAREA,
wxPoint( x, y ),
msg1, wxPoint( x, y ),
msg2, wxPoint( x, y ) );
Add( marker );
}
nerrors++;
}
}
// test for some corners of area_to_test inside Area_Ref
for( int ic2 = 0; ic2 < testSmoothedPoly->GetNumCorners(); ic2++ )
{
int x = testSmoothedPoly->GetX( ic2 );
int y = testSmoothedPoly->GetY( ic2 );
if( refSmoothedPoly->TestPointInside( x, y ) )
{
// COPPERAREA_COPPERAREA error: copper area corner inside copper area ref
if( aCreate_Markers )
{
wxString msg1 = area_to_test->GetSelectMenuText();
wxString msg2 = Area_Ref->GetSelectMenuText();
MARKER_PCB* marker = new MARKER_PCB( COPPERAREA_INSIDE_COPPERAREA,
wxPoint( x, y ),
msg1, wxPoint( x, y ),
msg2, wxPoint( x, y ) );
Add( marker );
}
nerrors++;
}
}
// now test spacing between areas
for( int icont = 0; icont < refSmoothedPoly->GetContoursCount(); icont++ )
{
int ic_start = refSmoothedPoly->GetContourStart( icont );
int ic_end = refSmoothedPoly->GetContourEnd( icont );
for( int ic = ic_start; ic<=ic_end; ic++ )
{
int ax1 = refSmoothedPoly->GetX( ic );
int ay1 = refSmoothedPoly->GetY( ic );
int ax2, ay2;
if( ic == ic_end )
{
ax2 = refSmoothedPoly->GetX( ic_start );
ay2 = refSmoothedPoly->GetY( ic_start );
}
else
{
ax2 = refSmoothedPoly->GetX( ic + 1 );
ay2 = refSmoothedPoly->GetY( ic + 1 );
}
for( int icont2 = 0; icont2 < testSmoothedPoly->GetContoursCount(); icont2++ )
{
int ic_start2 = testSmoothedPoly->GetContourStart( icont2 );
int ic_end2 = testSmoothedPoly->GetContourEnd( icont2 );
for( int ic2 = ic_start2; ic2<=ic_end2; ic2++ )
{
int bx1 = testSmoothedPoly->GetX( ic2 );
int by1 = testSmoothedPoly->GetY( ic2 );
int bx2, by2;
if( ic2 == ic_end2 )
{
bx2 = testSmoothedPoly->GetX( ic_start2 );
by2 = testSmoothedPoly->GetY( ic_start2 );
}
else
{
bx2 = testSmoothedPoly->GetX( ic2 + 1 );
by2 = testSmoothedPoly->GetY( ic2 + 1 );
}
int x, y;
int d = GetClearanceBetweenSegments( bx1, by1, bx2, by2,
0,
ax1, ay1, ax2, ay2,
0,
zone2zoneClearance,
&x, &y );
if( d < zone2zoneClearance )
{
// COPPERAREA_COPPERAREA error : intersect or too close
if( aCreate_Markers )
{
wxString msg1 = Area_Ref->GetSelectMenuText();
wxString msg2 = area_to_test->GetSelectMenuText();
MARKER_PCB* marker = new MARKER_PCB( COPPERAREA_CLOSE_TO_COPPERAREA,
wxPoint( x, y ),
msg1, wxPoint( x, y ),
msg2, wxPoint( x, y ) );
Add( marker );
}
nerrors++;
}
}
}
}
}
}
}
return nerrors;
}
bool DRC::doEdgeZoneDrc( ZONE_CONTAINER* aArea, int aCornerIndex )
{
if( !aArea->IsOnCopperLayer() ) // Cannot have a Drc error if not on copper layer
return true;
wxString str;
wxPoint start = aArea->GetCornerPosition( aCornerIndex );
wxPoint end;
// Search the end point of the edge starting at aCornerIndex
if( aArea->Outline()->m_CornersList[aCornerIndex].end_contour == false
&& aCornerIndex < (aArea->GetNumCorners() - 1) )
{
end = aArea->GetCornerPosition( aCornerIndex + 1 );
}
else // aCornerIndex is the last corner of an outline.
// the corresponding end point of the segment is the first corner of the outline
{
int ii = aCornerIndex - 1;
end = aArea->GetCornerPosition( ii );
while( ii >= 0 )
{
if( aArea->Outline()->m_CornersList[ii].end_contour )
break;
end = aArea->GetCornerPosition( ii );
ii--;
}
}
// iterate through all areas
for( int ia2 = 0; ia2 < m_pcb->GetAreaCount(); ia2++ )
{
ZONE_CONTAINER* area_to_test = m_pcb->GetArea( ia2 );
int zone_clearance = std::max( area_to_test->GetZoneClearance(),
aArea->GetZoneClearance() );
// test for same layer
if( area_to_test->GetLayer() != aArea->GetLayer() )
continue;
// Test for same net
if( ( aArea->GetNet() == area_to_test->GetNet() ) && (aArea->GetNet() >= 0) )
continue;
// test for same priority
if( area_to_test->GetPriority() != aArea->GetPriority() )
continue;
// test for same type
if( area_to_test->GetIsKeepout() != aArea->GetIsKeepout() )
continue;
// For keepout, there is no clearance, so use a minimal value for it
// use 1, not 0 as value to avoid some issues in tests
if( area_to_test->GetIsKeepout() )
zone_clearance = 1;
// test for ending line inside area_to_test
if( area_to_test->Outline()->TestPointInside( end.x, end.y ) )
{
// COPPERAREA_COPPERAREA error: corner inside copper area
m_currentMarker = fillMarker( aArea, end,
COPPERAREA_INSIDE_COPPERAREA,
m_currentMarker );
return false;
}
// now test spacing between areas
int ax1 = start.x;
int ay1 = start.y;
int ax2 = end.x;
int ay2 = end.y;
for( int icont2 = 0; icont2 < area_to_test->Outline()->GetContoursCount(); icont2++ )
{
int ic_start2 = area_to_test->Outline()->GetContourStart( icont2 );
int ic_end2 = area_to_test->Outline()->GetContourEnd( icont2 );
for( int ic2 = ic_start2; ic2<=ic_end2; ic2++ )
{
int bx1 = area_to_test->Outline()->GetX( ic2 );
int by1 = area_to_test->Outline()->GetY( ic2 );
int bx2, by2;
if( ic2 == ic_end2 )
{
bx2 = area_to_test->Outline()->GetX( ic_start2 );
by2 = area_to_test->Outline()->GetY( ic_start2 );
}
else
{
bx2 = area_to_test->Outline()->GetX( ic2 + 1 );
by2 = area_to_test->Outline()->GetY( ic2 + 1 );
}
int x, y; // variables containing the intersecting point coordinates
int d = GetClearanceBetweenSegments( bx1, by1, bx2, by2,
0,
ax1, ay1, ax2, ay2,
0,
zone_clearance,
&x, &y );
if( d < zone_clearance )
{
// COPPERAREA_COPPERAREA error : edge intersect or too close
m_currentMarker = fillMarker( aArea, wxPoint( x, y ),
COPPERAREA_CLOSE_TO_COPPERAREA,
m_currentMarker );
return false;
}
}
}
}
return true;
}
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