564 lines
18 KiB
C++
564 lines
18 KiB
C++
/*
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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) 2007-2014 Jean-Pierre Charras jp.charras at wanadoo.fr
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* Copyright (C) 1992-2020 KiCad Developers, see change_log.txt for contributors.
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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 <vector>
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#include <export_to_pcbnew.h>
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#include <confirm.h>
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#include <macros.h>
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#include <trigo.h>
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#include <gerbview_frame.h>
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#include <gerber_file_image.h>
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#include <gerber_file_image_list.h>
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#include <build_version.h>
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#include <wildcards_and_files_ext.h>
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#include "excellon_image.h"
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// Imported function
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extern const wxString GetPCBDefaultLayerName( LAYER_NUM aLayerNumber );
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GBR_TO_PCB_EXPORTER::GBR_TO_PCB_EXPORTER( GERBVIEW_FRAME* aFrame, const wxString& aFileName )
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{
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m_gerbview_frame = aFrame;
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m_pcb_file_name = aFileName;
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m_fp = NULL;
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m_pcbCopperLayersCount = 2;
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}
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GBR_TO_PCB_EXPORTER::~GBR_TO_PCB_EXPORTER()
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{
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}
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bool GBR_TO_PCB_EXPORTER::ExportPcb( LAYER_NUM* aLayerLookUpTable, int aCopperLayers )
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{
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LOCALE_IO toggle; // toggles on, then off, the C locale.
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m_fp = wxFopen( m_pcb_file_name, wxT( "wt" ) );
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if( m_fp == NULL )
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{
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wxString msg;
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msg.Printf( _( "Cannot create file \"%s\"" ), m_pcb_file_name );
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DisplayError( m_gerbview_frame, msg );
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return false;
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}
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m_pcbCopperLayersCount = aCopperLayers;
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writePcbHeader( aLayerLookUpTable );
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// create an image of gerber data
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const int pcbCopperLayerMax = 31;
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GERBER_FILE_IMAGE_LIST* images = m_gerbview_frame->GetGerberLayout()->GetImagesList();
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// First collect all the holes. We'll use these to generate pads, vias, etc.
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for( unsigned layer = 0; layer < images->ImagesMaxCount(); ++layer )
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{
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EXCELLON_IMAGE* excellon = dynamic_cast<EXCELLON_IMAGE*>( images->GetGbrImage( layer ) );
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if( excellon == NULL ) // Layer not yet used or not a drill image
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continue;
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for( GERBER_DRAW_ITEM* gerb_item : excellon->GetItems() )
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collect_hole( gerb_item );
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}
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// Next: non copper layers:
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for( unsigned layer = 0; layer < images->ImagesMaxCount(); ++layer )
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{
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GERBER_FILE_IMAGE* gerber = images->GetGbrImage( layer );
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if( gerber == NULL ) // Graphic layer not yet used
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continue;
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LAYER_NUM pcb_layer_number = aLayerLookUpTable[layer];
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if( !IsPcbLayer( pcb_layer_number ) )
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continue;
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if( pcb_layer_number <= pcbCopperLayerMax ) // copper layer
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continue;
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for( GERBER_DRAW_ITEM* gerb_item : gerber->GetItems() )
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export_non_copper_item( gerb_item, pcb_layer_number );
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}
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// Copper layers
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for( unsigned layer = 0; layer < images->ImagesMaxCount(); ++layer )
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{
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GERBER_FILE_IMAGE* gerber = images->GetGbrImage( layer );
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if( gerber == NULL ) // Graphic layer not yet used
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continue;
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LAYER_NUM pcb_layer_number = aLayerLookUpTable[layer];
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if( pcb_layer_number < 0 || pcb_layer_number > pcbCopperLayerMax )
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continue;
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for( GERBER_DRAW_ITEM* gerb_item : gerber->GetItems() )
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export_copper_item( gerb_item, pcb_layer_number );
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}
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// Now write out the holes we collected earlier as vias
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for( const EXPORT_VIA& via : m_vias )
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export_via( via );
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fprintf( m_fp, ")\n" );
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fclose( m_fp );
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m_fp = NULL;
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return true;
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}
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void GBR_TO_PCB_EXPORTER::export_non_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
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{
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// used when a D_CODE is not found. default D_CODE to draw a flashed item
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static D_CODE dummyD_CODE( 0 );
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wxPoint seg_start = aGbrItem->m_Start;
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wxPoint seg_end = aGbrItem->m_End;
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D_CODE* d_codeDescr = aGbrItem->GetDcodeDescr();
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SHAPE_POLY_SET polygon;
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if( d_codeDescr == NULL )
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d_codeDescr = &dummyD_CODE;
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switch( aGbrItem->m_Shape )
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{
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case GBR_POLYGON:
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writePcbPolygon( aGbrItem->m_Polygon, aLayer );
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break;
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case GBR_SPOT_CIRCLE:
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case GBR_SPOT_RECT:
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case GBR_SPOT_OVAL:
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case GBR_SPOT_POLY:
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case GBR_SPOT_MACRO:
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d_codeDescr->ConvertShapeToPolygon();
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writePcbPolygon( d_codeDescr->m_Polygon, aLayer, aGbrItem->GetABPosition( seg_start ) );
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break;
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case GBR_ARC:
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{
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double a = atan2( (double) ( aGbrItem->m_Start.y - aGbrItem->m_ArcCentre.y ),
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(double) ( aGbrItem->m_Start.x - aGbrItem->m_ArcCentre.x ) );
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double b = atan2( (double) ( aGbrItem->m_End.y - aGbrItem->m_ArcCentre.y ),
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(double) ( aGbrItem->m_End.x - aGbrItem->m_ArcCentre.x ) );
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double angle = RAD2DEG(b - a);
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seg_start = aGbrItem->m_ArcCentre;
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// Ensure arc orientation is CCW
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if( angle < 0 )
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angle += 360.0;
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// Reverse Y axis:
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seg_start.y = -seg_start.y;
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seg_end.y = -seg_end.y;
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if( angle == 360.0 || angle == 0 )
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{
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fprintf( m_fp, "(gr_circle (center %s %s) (end %s %s) (layer %s) (width %s))\n",
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Double2Str( MapToPcbUnits(seg_start.x) ).c_str(),
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Double2Str( MapToPcbUnits(seg_start.y) ).c_str(),
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Double2Str( MapToPcbUnits(seg_end.x) ).c_str(),
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Double2Str( MapToPcbUnits(seg_end.y) ).c_str(),
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TO_UTF8( GetPCBDefaultLayerName( aLayer ) ),
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Double2Str( MapToPcbUnits( aGbrItem->m_Size.x ) ).c_str()
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);
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}
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else
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{
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fprintf( m_fp, "(gr_arc (start %s %s) (end %s %s) (angle %s) (layer %s) (width %s))\n",
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Double2Str( MapToPcbUnits(seg_start.x) ).c_str(),
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Double2Str( MapToPcbUnits(seg_start.y) ).c_str(),
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Double2Str( MapToPcbUnits(seg_end.x) ).c_str(),
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Double2Str( MapToPcbUnits(seg_end.y) ).c_str(),
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Double2Str( angle ).c_str(),
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TO_UTF8( GetPCBDefaultLayerName( aLayer ) ),
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Double2Str( MapToPcbUnits( aGbrItem->m_Size.x ) ).c_str()
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);
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}
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}
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break;
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case GBR_CIRCLE:
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// Reverse Y axis:
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seg_start.y = -seg_start.y;
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seg_end.y = -seg_end.y;
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fprintf( m_fp, "(gr_circle (start %s %s) (end %s %s) (layer %s) (width %s))\n",
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Double2Str( MapToPcbUnits( seg_start.x ) ).c_str(),
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Double2Str( MapToPcbUnits( seg_start.y ) ).c_str(),
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Double2Str( MapToPcbUnits( seg_end.x ) ).c_str(),
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Double2Str( MapToPcbUnits( seg_end.y ) ).c_str(),
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TO_UTF8( GetPCBDefaultLayerName( aLayer ) ),
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Double2Str( MapToPcbUnits( aGbrItem->m_Size.x ) ).c_str() );
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break;
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case GBR_SEGMENT:
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// Reverse Y axis:
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seg_start.y = -seg_start.y;
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seg_end.y = -seg_end.y;
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fprintf( m_fp, "(gr_line (start %s %s) (end %s %s) (layer %s) (width %s))\n",
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Double2Str( MapToPcbUnits( seg_start.x ) ).c_str(),
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Double2Str( MapToPcbUnits( seg_start.y ) ).c_str(),
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Double2Str( MapToPcbUnits( seg_end.x ) ).c_str(),
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Double2Str( MapToPcbUnits( seg_end.y ) ).c_str(),
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TO_UTF8( GetPCBDefaultLayerName( aLayer ) ),
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Double2Str( MapToPcbUnits( aGbrItem->m_Size.x ) ).c_str() );
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break;
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}
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}
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/*
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* Many holes will be pads, but we have no way to create those without footprints, and creating
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* a module per pad is not really viable.
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*
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* So we use vias to mimic holes, with the loss of any hole shape (as we only have round holes
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* in vias at present).
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*
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* We start out with a via size minimally larger than the hole. We'll leave it this way if
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* the pad gets drawn as a copper polygon, or increase it to the proper size if it has a
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* circular, concentric copper flashing.
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*/
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void GBR_TO_PCB_EXPORTER::collect_hole( GERBER_DRAW_ITEM* aGbrItem )
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{
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int size = std::min( aGbrItem->m_Size.x, aGbrItem->m_Size.y );
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m_vias.emplace_back( aGbrItem->m_Start, size + 1, size );
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}
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void GBR_TO_PCB_EXPORTER::export_via( const EXPORT_VIA& aVia )
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{
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wxPoint via_pos = aVia.m_Pos;
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// Reverse Y axis:
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via_pos.y = -via_pos.y;
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// Layers are Front to Back
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fprintf( m_fp, " (via (at %s %s) (size %s) (drill %s)",
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Double2Str( MapToPcbUnits( via_pos.x ) ).c_str(),
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Double2Str( MapToPcbUnits( via_pos.y ) ).c_str(),
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Double2Str( MapToPcbUnits( aVia.m_Size ) ).c_str(),
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Double2Str( MapToPcbUnits( aVia.m_Drill ) ).c_str() );
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fprintf( m_fp, " (layers %s %s))\n",
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TO_UTF8( GetPCBDefaultLayerName( F_Cu ) ),
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TO_UTF8( GetPCBDefaultLayerName( B_Cu ) ) );
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}
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void GBR_TO_PCB_EXPORTER::export_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
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{
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switch( aGbrItem->m_Shape )
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{
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case GBR_SPOT_CIRCLE:
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case GBR_SPOT_RECT:
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case GBR_SPOT_OVAL:
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export_flashed_copper_item( aGbrItem, aLayer );
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break;
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case GBR_ARC:
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export_segarc_copper_item( aGbrItem, aLayer );
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break;
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case GBR_POLYGON:
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// One can use a polygon or a zone to output a Gerber region.
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// none are perfect.
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// The current way is use a polygon, as the zone export
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// is exprimental and only for tests.
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#if 1
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writePcbPolygon( aGbrItem->m_Polygon, aLayer );
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#else
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// Only for tests:
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writePcbZoneItem( aGbrItem, aLayer );
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#endif
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break;
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default:
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export_segline_copper_item( aGbrItem, aLayer );
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break;
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}
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}
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void GBR_TO_PCB_EXPORTER::export_segline_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
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{
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wxPoint seg_start, seg_end;
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seg_start = aGbrItem->m_Start;
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seg_end = aGbrItem->m_End;
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// Reverse Y axis:
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seg_start.y = -seg_start.y;
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seg_end.y = -seg_end.y;
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writeCopperLineItem( seg_start, seg_end, aGbrItem->m_Size.x, aLayer );
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}
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void GBR_TO_PCB_EXPORTER::writeCopperLineItem( wxPoint& aStart, wxPoint& aEnd,
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int aWidth, LAYER_NUM aLayer )
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{
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fprintf( m_fp, "(segment (start %s %s) (end %s %s) (width %s) (layer %s) (net 0))\n",
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Double2Str( MapToPcbUnits(aStart.x) ).c_str(),
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Double2Str( MapToPcbUnits(aStart.y) ).c_str(),
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Double2Str( MapToPcbUnits(aEnd.x) ).c_str(),
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Double2Str( MapToPcbUnits(aEnd.y) ).c_str(),
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Double2Str( MapToPcbUnits( aWidth ) ).c_str(),
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TO_UTF8( GetPCBDefaultLayerName( aLayer ) ) );
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}
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void GBR_TO_PCB_EXPORTER::export_segarc_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
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{
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double a = atan2( (double) ( aGbrItem->m_Start.y - aGbrItem->m_ArcCentre.y ),
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(double) ( aGbrItem->m_Start.x - aGbrItem->m_ArcCentre.x ) );
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double b = atan2( (double) ( aGbrItem->m_End.y - aGbrItem->m_ArcCentre.y ),
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(double) ( aGbrItem->m_End.x - aGbrItem->m_ArcCentre.x ) );
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wxPoint start = aGbrItem->m_Start;
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wxPoint end = aGbrItem->m_End;
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/* Because Pcbnew does not know arcs in tracks,
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* approximate arc by segments (SEG_COUNT__CIRCLE segment per 360 deg)
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* The arc is drawn anticlockwise from the start point to the end point.
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*/
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#define SEG_COUNT_CIRCLE 16
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#define DELTA_ANGLE 2 * M_PI / SEG_COUNT_CIRCLE
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// calculate the number of segments from a to b.
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// we want CNT_PER_360 segments fo a circle
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if( a > b )
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b += 2 * M_PI;
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wxPoint curr_start = start;
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wxPoint seg_start, seg_end;
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int ii = 1;
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for( double rot = a; rot < (b - DELTA_ANGLE); rot += DELTA_ANGLE, ii++ )
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{
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seg_start = curr_start;
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wxPoint curr_end = start;
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RotatePoint( &curr_end, aGbrItem->m_ArcCentre,
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-RAD2DECIDEG( DELTA_ANGLE * ii ) );
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seg_end = curr_end;
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// Reverse Y axis:
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seg_start.y = -seg_start.y;
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seg_end.y = -seg_end.y;
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writeCopperLineItem( seg_start, seg_end, aGbrItem->m_Size.x, aLayer );
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curr_start = curr_end;
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}
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if( end != curr_start )
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{
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seg_start = curr_start;
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seg_end = end;
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// Reverse Y axis:
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seg_start.y = -seg_start.y;
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seg_end.y = -seg_end.y;
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writeCopperLineItem( seg_start, seg_end, aGbrItem->m_Size.x, aLayer );
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}
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}
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/*
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* Flashed items are usually pads or vias. Pads are problematic because we have no way to
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* represent one in Pcbnew outside of a module (and creating a module per pad isn't really
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* viable).
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* If we've already created a via from a hole, and the flashed copper item is a simple circle
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* then we'll enlarge the via to the proper size. Otherwise we create a copper polygon to
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* represent the flashed item (which is presumably a pad).
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*/
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void GBR_TO_PCB_EXPORTER::export_flashed_copper_item( GERBER_DRAW_ITEM* aGbrItem,
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LAYER_NUM aLayer )
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{
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static D_CODE flashed_item_D_CODE( 0 );
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D_CODE* d_codeDescr = aGbrItem->GetDcodeDescr();
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SHAPE_POLY_SET polygon;
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if( d_codeDescr == NULL )
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d_codeDescr = &flashed_item_D_CODE;
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if( aGbrItem->m_Shape == GBR_SPOT_CIRCLE )
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{
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// See if there's a via that we can enlarge to fit this flashed item
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for( EXPORT_VIA& via : m_vias )
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{
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if( via.m_Pos == aGbrItem->m_Start )
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{
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via.m_Size = std::max( via.m_Size, aGbrItem->m_Size.x );
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return;
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}
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}
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}
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d_codeDescr->ConvertShapeToPolygon();
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wxPoint offset = aGbrItem->GetABPosition( aGbrItem->m_Start );
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writePcbPolygon( d_codeDescr->m_Polygon, aLayer, offset );
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}
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void GBR_TO_PCB_EXPORTER::writePcbHeader( LAYER_NUM* aLayerLookUpTable )
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{
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fprintf( m_fp, "(kicad_pcb (version 4) (host Gerbview \"%s\")\n\n",
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TO_UTF8( GetBuildVersion() ) );
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// Write layers section
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fprintf( m_fp, " (layers \n" );
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for( int ii = 0; ii < m_pcbCopperLayersCount; ii++ )
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{
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int id = ii;
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if( ii == m_pcbCopperLayersCount-1)
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id = B_Cu;
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fprintf( m_fp, " (%d %s signal)\n", id, TO_UTF8( GetPCBDefaultLayerName( id ) ) );
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}
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for( int ii = B_Adhes; ii < PCB_LAYER_ID_COUNT; ii++ )
|
|
{
|
|
if( GetPCBDefaultLayerName( ii ).IsEmpty() ) // Layer not available for export
|
|
continue;
|
|
|
|
fprintf( m_fp, " (%d %s user)\n", ii, TO_UTF8( GetPCBDefaultLayerName( ii ) ) );
|
|
}
|
|
|
|
fprintf( m_fp, " )\n\n" );
|
|
}
|
|
|
|
|
|
void GBR_TO_PCB_EXPORTER::writePcbPolygon( const SHAPE_POLY_SET& aPolys, LAYER_NUM aLayer,
|
|
const wxPoint& aOffset )
|
|
{
|
|
SHAPE_POLY_SET polys = aPolys;
|
|
|
|
// Cleanup the polygon
|
|
polys.Simplify( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
|
|
|
|
// Ensure the polygon is valid:
|
|
if( polys.OutlineCount() == 0 )
|
|
return;
|
|
|
|
polys.Fracture( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
|
|
|
|
SHAPE_LINE_CHAIN& poly = polys.Outline( 0 );
|
|
|
|
fprintf( m_fp, "(gr_poly (pts " );
|
|
|
|
#define MAX_COORD_CNT 4
|
|
int jj = MAX_COORD_CNT;
|
|
int cnt_max = poly.PointCount() -1;
|
|
|
|
// Do not generate last corner, if it is the same point as the first point:
|
|
if( poly.CPoint( 0 ) == poly.CPoint( cnt_max ) )
|
|
cnt_max--;
|
|
|
|
for( int ii = 0; ii <= cnt_max; ii++ )
|
|
{
|
|
if( --jj == 0 )
|
|
{
|
|
jj = MAX_COORD_CNT;
|
|
fprintf( m_fp, "\n" );
|
|
}
|
|
|
|
fprintf( m_fp, " (xy %s %s)",
|
|
Double2Str( MapToPcbUnits( poly.CPoint( ii ).x + aOffset.x ) ).c_str(),
|
|
Double2Str( MapToPcbUnits( -poly.CPoint( ii ).y + aOffset.y ) ).c_str() );
|
|
}
|
|
|
|
fprintf( m_fp, ")" );
|
|
|
|
if( jj != MAX_COORD_CNT )
|
|
fprintf( m_fp, "\n" );
|
|
|
|
fprintf( m_fp, "(layer %s) (width 0) )\n",
|
|
TO_UTF8( GetPCBDefaultLayerName( aLayer ) ) );
|
|
}
|
|
|
|
|
|
void GBR_TO_PCB_EXPORTER::writePcbZoneItem( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
|
|
{
|
|
SHAPE_POLY_SET polys = aGbrItem->m_Polygon;
|
|
polys.Simplify( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
|
|
|
|
if( polys.OutlineCount() == 0 )
|
|
return;
|
|
|
|
fprintf( m_fp, "(zone (net 0) (net_name \"\") (layer %s) (tstamp 0000000) (hatch edge 0.508)\n",
|
|
TO_UTF8( GetPCBDefaultLayerName( aLayer ) ) );
|
|
|
|
fprintf( m_fp, " (connect_pads (clearance 0.0))\n" );
|
|
|
|
fprintf( m_fp, " (min_thickness 0.1) (filled_areas_thickness no)\n"
|
|
" (fill (thermal_gap 0.3) (thermal_bridge_width 0.3))\n" );
|
|
|
|
// Now, write the zone outlines with holes.
|
|
// first polygon is the main outline, next are holes
|
|
// One cannot know the initial zone outline.
|
|
// However most of (if not all) holes are just items with clearance,
|
|
// not really a hole in the initial zone outline.
|
|
// So we build a zone outline only with no hole.
|
|
fprintf( m_fp, " (polygon\n (pts" );
|
|
|
|
SHAPE_LINE_CHAIN& poly = polys.Outline( 0 );
|
|
|
|
#define MAX_COORD_CNT 4
|
|
int jj = MAX_COORD_CNT;
|
|
int cnt_max = poly.PointCount() -1;
|
|
|
|
// Do not generate last corner, if it is the same point as the first point:
|
|
if( poly.CPoint( 0 ) == poly.CPoint( cnt_max ) )
|
|
cnt_max--;
|
|
|
|
for( int ii = 0; ii <= cnt_max; ii++ )
|
|
{
|
|
if( --jj == 0 )
|
|
{
|
|
jj = MAX_COORD_CNT;
|
|
fprintf( m_fp, "\n " );
|
|
}
|
|
|
|
fprintf( m_fp, " (xy %s %s)", Double2Str( MapToPcbUnits( poly.CPoint( ii ).x ) ).c_str(),
|
|
Double2Str( MapToPcbUnits( -poly.CPoint( ii ).y ) ).c_str() );
|
|
}
|
|
|
|
fprintf( m_fp, ")\n" );
|
|
|
|
fprintf( m_fp, " )\n)\n" );
|
|
}
|