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326 lines
9.8 KiB
326 lines
9.8 KiB
/**
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* @file zones_test_and_combine_areas.cpp
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* @brief Functions to test, merge and cut polygons used as copper areas outlines
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* some pieces of code come from FreePCB.
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*/
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/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
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* Copyright (C) 1992-2012 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* Some code comes from FreePCB.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <fctsys.h>
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#include <common.h>
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#include <confirm.h>
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#include <undo_redo_container.h>
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#include <class_board.h>
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#include <class_zone.h>
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#include <class_marker_pcb.h>
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#include <pcbnew.h>
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#include <drc/drc.h>
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#include <math_for_graphics.h>
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#define STRAIGHT 0 // To be remove after math_for_graphics code cleanup
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bool BOARD::OnAreaPolygonModified( PICKED_ITEMS_LIST* aModifiedZonesList,
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ZONE_CONTAINER* modified_area )
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{
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// clip polygon against itself
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bool modified = NormalizeAreaPolygon( aModifiedZonesList, modified_area );
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// now see if we need to clip against other areas
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/*
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LAYER_NUM layer = modified_area->GetLayer();
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*/
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bool bCheckAllAreas = TestAreaIntersections( modified_area );
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if( bCheckAllAreas )
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{
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modified = true;
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CombineAllAreasInNet( aModifiedZonesList, modified_area->GetNetCode(), true );
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}
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/*
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FIXME : do we really need this?
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if( !IsCopperLayer( layer ) ) // Refill non copper zones on this layer
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{
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for( unsigned ia = 0; ia < m_ZoneDescriptorList.size(); ia++ )
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if( m_ZoneDescriptorList[ia]->GetLayer() == layer )
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m_ZoneDescriptorList[ia]->BuildFilledSolidAreasPolygons( this );
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}
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*/
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// Test for bad areas: all zones must have more than 2 corners:
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// Note: should not happen, but just in case.
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for( unsigned ii = 0; ii < m_ZoneDescriptorList.size(); )
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{
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ZONE_CONTAINER* zone = m_ZoneDescriptorList[ii];
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if( zone->GetNumCorners() >= 3 )
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ii++;
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else // Remove zone because it is incorrect:
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RemoveArea( aModifiedZonesList, zone );
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}
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return modified;
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}
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bool BOARD::CombineAllAreasInNet( PICKED_ITEMS_LIST* aDeletedList, int aNetCode,
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bool aUseLocalFlags )
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{
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if( m_ZoneDescriptorList.size() <= 1 )
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return false;
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bool modified = false;
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// Loop through all combinations
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for( unsigned ia1 = 0; ia1 < m_ZoneDescriptorList.size() - 1; ia1++ )
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{
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ZONE_CONTAINER* curr_area = m_ZoneDescriptorList[ia1];
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if( curr_area->GetNetCode() != aNetCode )
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continue;
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// legal polygon
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BOX2I b1 = curr_area->Outline()->BBox();
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bool mod_ia1 = false;
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for( unsigned ia2 = m_ZoneDescriptorList.size() - 1; ia2 > ia1; ia2-- )
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{
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ZONE_CONTAINER* area2 = m_ZoneDescriptorList[ia2];
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if( area2->GetNetCode() != aNetCode )
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continue;
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if( curr_area->GetPriority() != area2->GetPriority() )
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continue;
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if( curr_area->GetIsKeepout() != area2->GetIsKeepout() )
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continue;
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if( curr_area->GetLayer() != area2->GetLayer() )
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continue;
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BOX2I b2 = area2->Outline()->BBox();
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if( b1.Intersects( b2 ) )
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{
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// check area2 against curr_area
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if( curr_area->GetLocalFlags() || area2->GetLocalFlags()
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|| aUseLocalFlags == false )
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{
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bool ret = TestAreaIntersection( curr_area, area2 );
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if( ret )
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ret = CombineAreas( aDeletedList, curr_area, area2 );
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if( ret )
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{
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mod_ia1 = true;
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modified = true;
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}
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}
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}
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}
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if( mod_ia1 )
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ia1--; // if modified, we need to check it again
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}
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return modified;
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}
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bool BOARD::TestAreaIntersections( ZONE_CONTAINER* area_to_test )
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{
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for( unsigned ia2 = 0; ia2 < m_ZoneDescriptorList.size(); ia2++ )
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{
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ZONE_CONTAINER* area2 = m_ZoneDescriptorList[ia2];
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if( area_to_test->GetNetCode() != area2->GetNetCode() )
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continue;
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if( area_to_test == area2 )
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continue;
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// see if areas are on same layers
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if( area_to_test->GetLayerSet() != area2->GetLayerSet() )
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continue;
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// test for different priorities
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if( area_to_test->GetPriority() != area2->GetPriority() )
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continue;
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// test for different types
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if( area_to_test->GetIsKeepout() != area2->GetIsKeepout() )
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continue;
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// Keepout area-specific tests
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if( area_to_test->GetIsKeepout() )
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{
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if( area_to_test->GetDoNotAllowCopperPour() != area2->GetDoNotAllowCopperPour() )
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continue;
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if( area_to_test->GetDoNotAllowTracks() != area2->GetDoNotAllowTracks() )
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continue;
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if( area_to_test->GetDoNotAllowVias() != area2->GetDoNotAllowVias() )
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continue;
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}
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// Filled zone specific tests
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else
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{
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if( area_to_test->GetClearance() != area2->GetClearance() )
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continue;
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if( area_to_test->GetThermalReliefGap() != area2->GetThermalReliefGap() )
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continue;
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if( area_to_test->GetThermalReliefCopperBridge() != area2->GetThermalReliefCopperBridge() )
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continue;
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if( area_to_test->GetZoneClearance() != area2->GetZoneClearance() )
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continue;
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if( area_to_test->GetPadConnection() != area2->GetPadConnection() )
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continue;
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if( area_to_test->GetMinThickness() != area2->GetMinThickness() )
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continue;
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if( area_to_test->GetCornerSmoothingType() != area2->GetCornerSmoothingType() )
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continue;
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if( area_to_test->GetCornerRadius() != area2->GetCornerRadius() )
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continue;
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}
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if( TestAreaIntersection( area_to_test, area2 ) )
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return true;
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}
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return false;
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}
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bool BOARD::TestAreaIntersection( ZONE_CONTAINER* area_ref, ZONE_CONTAINER* area_to_test )
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{
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// see if areas are on same layer
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if( area_ref->GetLayer() != area_to_test->GetLayer() )
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return false;
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SHAPE_POLY_SET* poly1 = area_ref->Outline();
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SHAPE_POLY_SET* poly2 = area_to_test->Outline();
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// test bounding rects
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BOX2I b1 = poly1->BBox();
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BOX2I b2 = poly2->BBox();
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if( ! b1.Intersects( b2 ) )
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return false;
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// Now test for intersecting segments
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for( auto segIterator1 = poly1->IterateSegmentsWithHoles(); segIterator1; segIterator1++ )
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{
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// Build segment
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SEG firstSegment = *segIterator1;
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for( auto segIterator2 = poly2->IterateSegmentsWithHoles(); segIterator2; segIterator2++ )
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{
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// Build second segment
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SEG secondSegment = *segIterator2;
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// Check whether the two segments built collide
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if( firstSegment.Collide( secondSegment, 0 ) )
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return true;
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}
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}
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// If a contour is inside another contour, no segments intersects, but the zones
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// can be combined if a corner is inside an outline (only one corner is enough)
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for( auto iter = poly2->IterateWithHoles(); iter; iter++ )
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{
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if( poly1->Contains( *iter ) )
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return true;
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}
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for( auto iter = poly1->IterateWithHoles(); iter; iter++ )
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{
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if( poly2->Contains( *iter ) )
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return true;
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}
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return false;
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}
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bool BOARD::CombineAreas( PICKED_ITEMS_LIST* aDeletedList, ZONE_CONTAINER* area_ref,
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ZONE_CONTAINER* area_to_combine )
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{
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if( area_ref == area_to_combine )
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{
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wxASSERT( 0 );
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return false;
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}
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SHAPE_POLY_SET mergedOutlines = *area_ref->Outline();
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SHAPE_POLY_SET areaToMergePoly = *area_to_combine->Outline();
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mergedOutlines.BooleanAdd( areaToMergePoly, SHAPE_POLY_SET::PM_FAST );
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mergedOutlines.Simplify( SHAPE_POLY_SET::PM_FAST );
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// We should have one polygon with hole
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// We can have 2 polygons with hole, if the 2 initial polygons have only one common corner
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// and therefore cannot be merged (they are dectected as intersecting)
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// but we should never have more than 2 polys
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if( mergedOutlines.OutlineCount() > 2 )
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{
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wxLogMessage(wxT("BOARD::CombineAreas error: more than 2 polys after merging") );
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return false;
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}
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if( mergedOutlines.OutlineCount() > 1 )
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return false;
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// Update the area with the new merged outline
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delete area_ref->Outline();
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area_ref->SetOutline( new SHAPE_POLY_SET( mergedOutlines ) );
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RemoveArea( aDeletedList, area_to_combine );
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area_ref->SetLocalFlags( 1 );
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area_ref->Hatch();
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return true;
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}
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