154 lines
6.2 KiB
C++
154 lines
6.2 KiB
C++
/***********************************************/
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/* zones_convert_to_polygons_aux_functions.cpp */
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/***********************************************/
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/* auxiliary functions used to calculare filled copper zones areas
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*/
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#include <vector>
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#include "fctsys.h"
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#include "polygons_defs.h"
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#include "common.h"
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#include "pcbnew.h"
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#include "wxPcbStruct.h"
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#include "trigo.h"
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#include "zones.h"
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#include "PolyLine.h"
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/**
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* Function BuildUnconnectedThermalStubsPolygonList
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* Creates a set of polygons corresponding to stubs created by thermal shapes on pads
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* which are not connected to a zone (dangling bridges)
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* @param aCornerBuffer = a std::vector<CPolyPt> where to store polygons
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* @param aPcb = the board.
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* @param aZone = a pointer to the ZONE_CONTAINER to examine.
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* @param aArcCorrection = a pointer to the ZONE_CONTAINER to examine.
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* @param aRoundPadThermalRotation = the rotation in 1.0 degree for thermal stubs in round pads
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*/
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void BuildUnconnectedThermalStubsPolygonList( std::vector<CPolyPt>& aCornerBuffer,
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BOARD* aPcb,
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ZONE_CONTAINER* aZone,
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double aArcCorrection,
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int aRoundPadThermalRotation)
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{
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std::vector<wxPoint> corners_buffer; // a local polygon buffer to store one stub
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corners_buffer.reserve( 4 );
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wxPoint ptTest[4];
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int zone_clearance = aZone->m_ZoneClearance;
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EDA_Rect item_boundingbox;
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EDA_Rect zone_boundingbox = aZone->GetBoundingBox();
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int biggest_clearance = aPcb->GetBiggestClearanceValue();
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biggest_clearance = MAX( biggest_clearance, zone_clearance );
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zone_boundingbox.Inflate( biggest_clearance );
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// Calculate thermal bridge half width
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int iDTRC = aZone->m_ThermalReliefCopperBridgeValue / 2;
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// half size of the pen used to draw/plot zones outlines
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int pen_radius = aZone->m_ZoneMinThickness / 2;
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for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
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{
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for( D_PAD* pad = module->m_Pads; pad != NULL; pad = pad->Next() )
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{
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// check
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if( !pad->IsOnLayer( aZone->GetLayer() ) )
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continue;
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if( pad->GetNet() != aZone->GetNet() )
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continue;
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item_boundingbox = pad->GetBoundingBox();
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item_boundingbox.Inflate( aZone->m_ThermalReliefGapValue );
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if( !( item_boundingbox.Intersects( zone_boundingbox ) ) )
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continue;
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// test point
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int dx = ( pad->m_Size.x / 2 ) + aZone->m_ThermalReliefGapValue;
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int dy = ( pad->m_Size.y / 2 ) + aZone->m_ThermalReliefGapValue;
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// This is CIRCLE pad tweak (for circle pads the thermal stubs are at 45 deg)
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int fAngle = pad->m_Orient;
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if( pad->m_PadShape == PAD_CIRCLE )
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{
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dx = (int) ( dx * aArcCorrection );
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dy = dx;
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fAngle = aRoundPadThermalRotation;
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}
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// contour line width has to be taken into calculation to avoid "thermal stub bleed"
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dx += pen_radius;
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dy += pen_radius;
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// compute north, south, west and east points for zone connection.
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ptTest[0] = wxPoint( 0, dy );
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ptTest[1] = wxPoint( 0, -dy );
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ptTest[2] = wxPoint( dx, 0 );
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ptTest[3] = wxPoint( -dx, 0 );
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// Test all sides
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for( int i = 0; i < 4; i++ )
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{
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// rotate point
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RotatePoint( &ptTest[i], fAngle );
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// translate point
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ptTest[i] += pad->ReturnShapePos();
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if( aZone->HitTestFilledArea( ptTest[i] ) )
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continue;
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corners_buffer.clear();
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// polygons are rectangles with width of copper bridge value
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switch( i )
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{
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case 0:
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corners_buffer.push_back( wxPoint( -iDTRC, dy ) );
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corners_buffer.push_back( wxPoint( +iDTRC, dy ) );
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corners_buffer.push_back( wxPoint( +iDTRC, iDTRC ) );
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corners_buffer.push_back( wxPoint( -iDTRC, iDTRC ) );
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break;
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case 1:
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corners_buffer.push_back( wxPoint( -iDTRC, -dy ) );
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corners_buffer.push_back( wxPoint( +iDTRC, -dy ) );
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corners_buffer.push_back( wxPoint( +iDTRC, -iDTRC ) );
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corners_buffer.push_back( wxPoint( -iDTRC, -iDTRC ) );
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break;
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case 2:
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corners_buffer.push_back( wxPoint( dx, -iDTRC ) );
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corners_buffer.push_back( wxPoint( dx, iDTRC ) );
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corners_buffer.push_back( wxPoint( +iDTRC, iDTRC ) );
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corners_buffer.push_back( wxPoint( +iDTRC, -iDTRC ) );
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break;
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case 3:
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corners_buffer.push_back( wxPoint( -dx, -iDTRC ) );
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corners_buffer.push_back( wxPoint( -dx, iDTRC ) );
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corners_buffer.push_back( wxPoint( -iDTRC, iDTRC ) );
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corners_buffer.push_back( wxPoint( -iDTRC, -iDTRC ) );
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break;
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}
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// add computed polygon to list
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for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
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{
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wxPoint cpos = corners_buffer[ic];
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RotatePoint( &cpos, fAngle ); // Rotate according to module orientation
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cpos += pad->ReturnShapePos(); // Shift origin to position
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CPolyPt corner;
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corner.x = cpos.x;
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corner.y = cpos.y;
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corner.end_contour = ( ic < (corners_buffer.size() - 1) ) ? 0 : 1;
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aCornerBuffer.push_back( corner );
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}
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}
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}
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}
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}
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