gerber_placefile_writer.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 Jean_Pierre Charras <jp.charras at wanadoo.fr>
 * Copyright (C) 1992-2023 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
 
#include "gerber_placefile_writer.h"
 
#include <vector>
 
#include <plotters/plotter_gerber.h>
#include <string_utils.h>
#include <locale_io.h>
#include <macros.h>
#include <pcb_shape.h>
#include <pcbplot.h>
#include <wildcards_and_files_ext.h>
#include <gbr_metadata.h>
#include <footprint.h>
#include <pad.h>
 
 
PLACEFILE_GERBER_WRITER::PLACEFILE_GERBER_WRITER( BOARD* aPcb )
{
 m_pcb = aPcb;
 m_plotPad1Marker = true; // Place a marker to pin 1 (or A1) position
 m_plotOtherPadsMarker = true; // Place a marker to other pins position
 m_layer = PCB_LAYER_ID::UNDEFINED_LAYER; // No layer set
}
 
 
int PLACEFILE_GERBER_WRITER::CreatePlaceFile( wxString& aFullFilename, PCB_LAYER_ID aLayer,
 bool aIncludeBrdEdges )
{
 m_layer = aLayer;
 
 PCB_PLOT_PARAMS plotOpts = m_pcb->GetPlotOptions();
 
 if( plotOpts.GetUseAuxOrigin() )
 m_offset = m_pcb->GetDesignSettings().GetAuxOrigin();
 
 // Collect footprints on the right layer
 std::vector<FOOTPRINT*> fp_list;
 
 for( FOOTPRINT* footprint : m_pcb->Footprints() )
 {
 if( footprint->GetAttributes() & FP_EXCLUDE_FROM_POS_FILES )
 continue;
 
 if( footprint->GetLayer() == aLayer )
 fp_list.push_back( footprint );
 }
 
 LOCALE_IO dummy_io; // Use the standard notation for float numbers
 
 GERBER_PLOTTER plotter;
 
 // Gerber drill file imply X2 format:
 plotter.UseX2format( true );
 plotter.UseX2NetAttributes( true );
 
 // Add the standard X2 header, without FileFunction
 AddGerberX2Header( &plotter, m_pcb );
 plotter.SetViewport( m_offset, pcbIUScale.IU_PER_MILS/10, /* scale */ 1.0, /* mirror */false );
 
 // has meaning only for gerber plotter. Must be called only after SetViewport
 plotter.SetGerberCoordinatesFormat( 6 );
 plotter.SetCreator( wxT( "PCBNEW" ) );
 
 // Add the standard X2 FileFunction for P&P files
 // %TF.FileFunction,Component,Ln,[top][bottom]*%
 wxString text;
 text.Printf( wxT( "%%TF.FileFunction,Component,L%d,%s*%%" ),
 aLayer == B_Cu ? m_pcb->GetCopperLayerCount() : 1,
 aLayer == B_Cu ? wxT( "Bot" ) : wxT( "Top" ) );
 plotter.AddLineToHeader( text );
 
 // Add file polarity (positive)
 text = wxT( "%TF.FilePolarity,Positive*%" );
 plotter.AddLineToHeader( text );
 
 if( !plotter.OpenFile( aFullFilename ) )
 return -1;
 
 // We need a BRDITEMS_PLOTTER to plot pads
 BRDITEMS_PLOTTER brd_plotter( &plotter, m_pcb, plotOpts );
 
 plotter.StartPlot( wxT( "1" ) );
 
 // Some tools in P&P files have the type and size defined.
 // they are position flash (round), pad1 flash (diamond), other pads flash (round)
 // and component outline thickness (polyline)
 
 // defined size for footprint position shape (circle)
 int flash_position_shape_diam = pcbIUScale.mmToIU( 0.3 );
 
 // defined size for pad 1 position (diamond)
 int pad1_mark_size = pcbIUScale.mmToIU( 0.36 );
 
 // Normalized size for other pads (circle)
 // It was initially the size 0, but was changed later to 0.1 mm in rev 2023-08
 // See ComponentPin aperture attribute (see 5.6.10 .AperFunction value)
 int other_pads_mark_size = pcbIUScale.mmToIU( 0.1 );
 
 // defined size for component outlines
 int line_thickness = pcbIUScale.mmToIU( 0.1 );
 
 brd_plotter.SetLayerSet( LSET( aLayer ) );
 int cmp_count = 0;
 const bool allowUtf8 = true;
 const bool quoteOption = false;
 
 // Plot components data: position, outlines, pad1 and other pads.
 for( FOOTPRINT* footprint : fp_list )
 {
 // Manage the aperture attribute component position:
 GBR_METADATA metadata;
 metadata.SetApertureAttrib( GBR_APERTURE_METADATA::GBR_APERTURE_ATTRIB_CMP_POSITION );
 
 // Add object attribute: component reference to flash (mainly useful for users)
 // using not quoted UTF8 string
 wxString ref = ConvertNotAllowedCharsInGerber( footprint->Reference().GetShownText( false ),
 allowUtf8, quoteOption );
 
 metadata.SetCmpReference( ref );
 metadata.SetNetAttribType( GBR_NETLIST_METADATA::GBR_NETINFO_CMP );
 
 // Add P&P specific attributes
 GBR_CMP_PNP_METADATA pnpAttrib;
 
 // Add rotation info (rotation is CCW, in degrees):
 pnpAttrib.m_Orientation = mapRotationAngle( footprint->GetOrientationDegrees(),
 aLayer == B_Cu ? true : false );
 
 pnpAttrib.m_MountType = GBR_CMP_PNP_METADATA::MOUNT_TYPE_UNSPECIFIED;
 
 if( footprint->GetAttributes() & FP_THROUGH_HOLE )
 pnpAttrib.m_MountType = GBR_CMP_PNP_METADATA::MOUNT_TYPE_TH;
 else if( footprint->GetAttributes() & FP_SMD )
 pnpAttrib.m_MountType = GBR_CMP_PNP_METADATA::MOUNT_TYPE_SMD;
 
 // Add component value info:
 pnpAttrib.m_Value = ConvertNotAllowedCharsInGerber( footprint->Value().GetShownText( false ),
 allowUtf8, quoteOption );
 
 // Add component footprint info:
 wxString fp_info = From_UTF8( footprint->GetFPID().GetLibItemName().c_str() );
 pnpAttrib.m_Footprint = ConvertNotAllowedCharsInGerber( fp_info, allowUtf8, quoteOption );
 
 // Add footprint lib name:
 fp_info = From_UTF8( footprint->GetFPID().GetLibNickname().c_str() );
 pnpAttrib.m_LibraryName = ConvertNotAllowedCharsInGerber( fp_info, allowUtf8, quoteOption );
 
 metadata.m_NetlistMetadata.SetExtraData( pnpAttrib.FormatCmpPnPMetadata() );
 
 VECTOR2I flash_pos = footprint->GetPosition();
 
 plotter.FlashPadCircle( flash_pos, flash_position_shape_diam, FILLED, &metadata );
 metadata.m_NetlistMetadata.ClearExtraData();
 
 // Now some extra metadata is output, avoid blindly clearing the full metadata list
 metadata.m_NetlistMetadata.m_TryKeepPreviousAttributes = true;
 
 // We plot the footprint courtyard when possible.
 // If not, the pads bounding box will be used.
 bool useFpPadsBbox = true;
 bool onBack = aLayer == B_Cu;
 
 footprint->BuildCourtyardCaches();
 
 int checkFlag = onBack ? MALFORMED_B_COURTYARD : MALFORMED_F_COURTYARD;
 
 if( ( footprint->GetFlags() & checkFlag ) == 0 )
 {
 metadata.SetApertureAttrib( GBR_APERTURE_METADATA::GBR_APERTURE_ATTRIB_CMP_COURTYARD );
 
 const SHAPE_POLY_SET& courtyard = footprint->GetCourtyard( aLayer );
 
 for( int ii = 0; ii < courtyard.OutlineCount(); ii++ )
 {
 SHAPE_LINE_CHAIN poly = courtyard.Outline( ii );
 
 if( !poly.PointCount() )
 continue;
 
 useFpPadsBbox = false;
 plotter.PLOTTER::PlotPoly( poly, FILL_T::NO_FILL, line_thickness, &metadata );
 }
 }
 
 if( useFpPadsBbox )
 {
 metadata.SetApertureAttrib( GBR_APERTURE_METADATA::GBR_APERTURE_ATTRIB_CMP_FOOTPRINT );
 
 // bbox of fp pads, pos 0, rot 0, non flipped
 BOX2I bbox = footprint->GetFpPadsLocalBbox();
 
 // negate bbox Y values if the fp is flipped (always flipped around X axis
 // in Gerber P&P files).
 int y_sign = aLayer == B_Cu ? -1 : 1;
 
 SHAPE_LINE_CHAIN poly;
 poly.Append( bbox.GetLeft(), y_sign*bbox.GetTop() );
 poly.Append( bbox.GetLeft(), y_sign*bbox.GetBottom() );
 poly.Append( bbox.GetRight(), y_sign*bbox.GetBottom() );
 poly.Append( bbox.GetRight(), y_sign*bbox.GetTop() );
 poly.SetClosed( true );
 
 poly.Rotate( footprint->GetOrientation() );
 poly.Move( footprint->GetPosition() );
 plotter.PLOTTER::PlotPoly( poly, FILL_T::NO_FILL, line_thickness, &metadata );
 }
 
 std::vector<PAD*>pad_key_list;
 
 if( m_plotPad1Marker )
 {
 findPads1( pad_key_list, footprint );
 
 for( PAD* pad1 : pad_key_list )
 {
 metadata.SetApertureAttrib( GBR_APERTURE_METADATA::GBR_APERTURE_ATTRIB_PAD1_POS );
 metadata.SetPadName( pad1->GetNumber(), allowUtf8, quoteOption );
 metadata.SetPadPinFunction( pad1->GetPinFunction(), allowUtf8, quoteOption );
 metadata.SetNetAttribType( GBR_NETLIST_METADATA::GBR_NETINFO_PAD );
 
 // Flashes a diamond at pad position:
 plotter.FlashRegularPolygon( pad1->GetPosition(), pad1_mark_size, 4, ANGLE_0,
 FILLED, &metadata );
 }
 }
 
 if( m_plotOtherPadsMarker )
 {
 metadata.SetApertureAttrib( GBR_APERTURE_METADATA::GBR_APERTURE_ATTRIB_PADOTHER_POS );
 metadata.SetNetAttribType( GBR_NETLIST_METADATA::GBR_NETINFO_PAD );
 
 for( PAD* pad: footprint->Pads() )
 {
 bool skip_pad = false;
 
 for( PAD* pad1 : pad_key_list )
 {
 if( pad == pad1 ) // Already plotted
 {
 skip_pad = true;
 break;
 }
 }
 
 if( skip_pad )
 continue;
 
 // Skip also pads not on the current layer, like pads only
 // on a tech layer
 if( !pad->IsOnLayer( aLayer ) )
 continue;
 
 metadata.SetPadName( pad->GetNumber(), allowUtf8, quoteOption );
 metadata.SetPadPinFunction( pad->GetPinFunction(), allowUtf8, quoteOption );
 
 // Flashes a round, 0 sized round shape at pad position
 plotter.FlashPadCircle( pad->GetPosition(), other_pads_mark_size, FILLED, &metadata );
 }
 }
 
 plotter.ClearAllAttributes(); // Unconditionally close all .TO attributes
 
 cmp_count++;
 }
 
 // Plot board outlines, if requested
 if( aIncludeBrdEdges )
 {
 brd_plotter.SetLayerSet( LSET( Edge_Cuts ) );
 
 // Plot edge layer and graphic items
 for( const BOARD_ITEM* item : m_pcb->Drawings() )
 brd_plotter.PlotBoardGraphicItem( item );
 
 // Draw footprint other graphic items:
 for( FOOTPRINT* footprint : fp_list )
 {
 for( BOARD_ITEM* item : footprint->GraphicalItems() )
 {
 if( item->Type() == PCB_SHAPE_T && item->GetLayer() == Edge_Cuts )
 brd_plotter.PlotShape( static_cast<PCB_SHAPE*>( item ) );
 }
 }
 }
 
 plotter.EndPlot();
 
 return cmp_count;
}
 
 
double PLACEFILE_GERBER_WRITER::mapRotationAngle( double aAngle, bool aIsFlipped )
{
 // Convert a KiCad footprint orientation to gerber rotation, depending on the layer
 // Gerber rotation is:
 // rot angle > 0 for rot CW, seen from Top side
 // same a Pcbnew for Top side
 // (angle + 180) for Bottom layer i.e flipped around Y axis: X axis coordinates mirrored.
 // because Pcbnew flip around the X axis : Y coord mirrored, that is similar to mirror
 // around Y axis + 180 deg rotation
 if( aIsFlipped )
 {
 double gbr_angle = 180.0 + aAngle;
 
 // Normalize between -180 ... + 180 deg
 // Not mandatory, but the angle is more easy to read
 if( gbr_angle <= -180 )
 gbr_angle += 360.0;
 else if( gbr_angle > 180 )
 gbr_angle -= 360.0;
 
 return gbr_angle;
 }
 
 return aAngle;
}
 
 
void PLACEFILE_GERBER_WRITER::findPads1( std::vector<PAD*>& aPadList, FOOTPRINT* aFootprint ) const
{
 // Fint the pad "1" or pad "A1"
 // this is possible only if only one pad is found
 // useful to place a marker in this position
 
 for( PAD* pad : aFootprint->Pads() )
 {
 if( !pad->IsOnLayer( m_layer ) )
 continue;
 
 if( pad->GetNumber() == wxT( "1" ) || pad->GetNumber() == wxT( "A1" ) )
 aPadList.push_back( pad );
 }
}
 
 
const wxString PLACEFILE_GERBER_WRITER::GetPlaceFileName( const wxString& aFullBaseFilename,
 PCB_LAYER_ID aLayer ) const
{
 // Gerber files extension is always .gbr.
 // Therefore, to mark pnp files, add "-pnp" to the filename, and a layer id.
 wxFileName fn = aFullBaseFilename;
 
 wxString post_id = wxT( "-pnp_" );
 post_id += aLayer == B_Cu ? wxT( "bottom" ) : wxT( "top" );
 fn.SetName( fn.GetName() + post_id );
 fn.SetExt( FILEEXT::GerberFileExtension );
 
 return fn.GetFullPath();
}