164 lines
7.2 KiB
C++
164 lines
7.2 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 "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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// 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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// Calculate thermal bridge half width
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int thermbridgeWidth = aZone->m_ThermalReliefCopperBridgeValue / 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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// Thermal bridges are like a segment from a starting point inside the pad
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// to an ending point outside the pad
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wxPoint startpoint, endpoint;
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endpoint.x = ( pad->m_Size.x / 2 ) + aZone->m_ThermalReliefGapValue;
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endpoint.y = ( pad->m_Size.y / 2 ) + aZone->m_ThermalReliefGapValue;
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int copperThickness = aZone->m_ThermalReliefCopperBridgeValue - aZone->m_ZoneMinThickness;
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if( copperThickness < 0 )
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copperThickness = 0;
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startpoint.x = min( pad->m_Size.x, copperThickness );
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startpoint.y = min( pad->m_Size.y, copperThickness );
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startpoint.x /= 2;
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startpoint.y /= 2;
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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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endpoint.x = (int) ( endpoint.x * aArcCorrection );
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endpoint.y = endpoint.x;
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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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endpoint.x += pen_radius;
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endpoint.y += pen_radius;
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// compute north, south, west and east points for zone connection.
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ptTest[0] = wxPoint( 0, endpoint.y ); // lower point
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ptTest[1] = wxPoint( 0, -endpoint.y ); // upper point
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ptTest[2] = wxPoint( endpoint.x, 0 ); // right point
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ptTest[3] = wxPoint( -endpoint.x, 0 ); // left point
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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: // lower stub
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corners_buffer.push_back( wxPoint( -thermbridgeWidth, endpoint.y ) );
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corners_buffer.push_back( wxPoint( +thermbridgeWidth, endpoint.y ) );
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corners_buffer.push_back( wxPoint( +thermbridgeWidth, startpoint.y ) );
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corners_buffer.push_back( wxPoint( -thermbridgeWidth, startpoint.y ) );
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break;
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case 1: // upper stub
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corners_buffer.push_back( wxPoint( -thermbridgeWidth, -endpoint.y ) );
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corners_buffer.push_back( wxPoint( +thermbridgeWidth, -endpoint.y ) );
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corners_buffer.push_back( wxPoint( +thermbridgeWidth, -startpoint.y ) );
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corners_buffer.push_back( wxPoint( -thermbridgeWidth, -startpoint.y ) );
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break;
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case 2: // right stub
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corners_buffer.push_back( wxPoint( endpoint.x, -thermbridgeWidth ) );
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corners_buffer.push_back( wxPoint( endpoint.x, thermbridgeWidth ) );
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corners_buffer.push_back( wxPoint( +startpoint.x, thermbridgeWidth ) );
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corners_buffer.push_back( wxPoint( +startpoint.x, -thermbridgeWidth ) );
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break;
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case 3: // left stub
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corners_buffer.push_back( wxPoint( -endpoint.x, -thermbridgeWidth ) );
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corners_buffer.push_back( wxPoint( -endpoint.x, thermbridgeWidth ) );
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corners_buffer.push_back( wxPoint( -startpoint.x, thermbridgeWidth ) );
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corners_buffer.push_back( wxPoint( -startpoint.x, -thermbridgeWidth ) );
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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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