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kicad/gerbview/export_to_pcbnew.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2007-2014 Jean-Pierre Charras jp.charras at wanadoo.fr
* Copyright (C) 1992-2017 KiCad Developers, see change_log.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 2
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* @file export_to_pcbnew.cpp
* @brief Export the layers to Pcbnew.
*/
#include <vector>
#include <fctsys.h>
#include <common.h>
#include <confirm.h>
#include <macros.h>
#include <trigo.h>
#include <gerbview.h>
#include <gerbview_frame.h>
#include <gerber_file_image.h>
#include <gerber_file_image_list.h>
#include <select_layers_to_pcb.h>
#include <build_version.h>
#include <wildcards_and_files_ext.h>
// Imported function
extern const wxString GetPCBDefaultLayerName( LAYER_NUM aLayerNumber );
/* A helper class to export a Gerber set of files to Pcbnew
*/
class GBR_TO_PCB_EXPORTER
{
private:
GERBVIEW_FRAME* m_gerbview_frame; // the main gerber frame
wxString m_pcb_file_name; // BOARD file to write to
FILE* m_fp; // the board file
int m_pcbCopperLayersCount;
std::vector<wxPoint> m_vias_coordinates; // list of already generated vias,
// used to export only once a via
// having a given coordinate
public:
GBR_TO_PCB_EXPORTER( GERBVIEW_FRAME* aFrame, const wxString& aFileName );
~GBR_TO_PCB_EXPORTER();
/**
* Function ExportPcb
* saves a board from a set of Gerber images.
*/
bool ExportPcb( LAYER_NUM* aLayerLookUpTable, int aCopperLayers );
private:
/**
* write a non copper line or arc to the board file.
* @param aGbrItem = the Gerber item (line, arc) to export
* @param aLayer = the technical layer to use
*/
void export_non_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer );
/**
* write anot filled polygon item to the board file.
* @param aGbrItem = the Gerber item (line, arc) to export
* @param aLayer = the technical layer to use
*/
void writePcbPolygonItem( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer );
/**
* write a zone item to the board file.
* Currently: only experimental, for tests
* @param aGbrItem = the Gerber item (line, arc) to export
* @param aLayer = the technical layer to use
*/
void writePcbZoneItem( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer );
/**
* write a track or via) to the board file.
* @param aGbrItem = the Gerber item (line, arc, flashed) to export
* @param aLayer = the copper layer to use
*/
void export_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer );
/**
* Function export_flashed_copper_item
* write a via to the board file (always uses a via through).
* @param aGbrItem = the flashed Gerber item to export
*/
void export_flashed_copper_item( GERBER_DRAW_ITEM* aGbrItem );
/**
* Function export_segline_copper_item
* write a track (not via) to the board file.
* @param aGbrItem = the Gerber item (line only) to export
* @param aLayer = the copper layer to use
*/
void export_segline_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer );
/**
* Function export_segarc_copper_item
* write a set of tracks (arcs are approximated by track segments)
* to the board file.
* @param aGbrItem = the Gerber item (arc only) to export
* @param aLayer = the copper layer to use
*/
void export_segarc_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer );
/**
* function writePcbLineItem
* basic write function to write a DRAWSEGMENT item or a TRACK item
* to the board file, from a non flashed item
*/
void writePcbLineItem( bool aIsArc, wxPoint& aStart, wxPoint& aEnd,
int aWidth, LAYER_NUM aLayer, double aAngle = 0 );
/**
* function writeCopperLineItem
* basic write function to write a a TRACK item
* to the board file, from a non flashed item
*/
void writeCopperLineItem( wxPoint& aStart, wxPoint& aEnd,
int aWidth, LAYER_NUM aLayer );
/**
* function writePcbHeader
* Write a very basic header to the board file
*/
void writePcbHeader( LAYER_NUM* aLayerLookUpTable );
/** In Pcbnew files units are mm for coordinates.
* So MapToPcbUnits converts internal gerbview to mm any pcbnew value
* @param aValue is a coordinate value to convert in mm
*/
double MapToPcbUnits( int aValue )
{
return aValue / IU_PER_MM;
}
};
GBR_TO_PCB_EXPORTER::GBR_TO_PCB_EXPORTER( GERBVIEW_FRAME* aFrame, const wxString& aFileName )
{
m_gerbview_frame = aFrame;
m_pcb_file_name = aFileName;
m_fp = NULL;
m_pcbCopperLayersCount = 2;
}
GBR_TO_PCB_EXPORTER::~GBR_TO_PCB_EXPORTER()
{
}
/* Export data in Pcbnew format
* remember Pcbnew uses a Y reversed axis, so we must negate all Y coordinates
*/
void GERBVIEW_FRAME::ExportDataInPcbnewFormat( wxCommandEvent& event )
{
int layercount = 0;
GERBER_FILE_IMAGE_LIST* images = GetGerberLayout()->GetImagesList();
// Count the Gerber layers which are actually currently used
for( LAYER_NUM ii = 0; ii < (LAYER_NUM)images->ImagesMaxCount(); ++ii )
{
if( images->GetGbrImage( ii ) )
layercount++;
}
if( layercount == 0 )
{
DisplayInfoMessage( this,
_( "None of the Gerber layers contain any data" ) );
return;
}
wxString fileName;
wxString path = m_mruPath;
wxFileDialog filedlg( this, _( "Board File Name" ),
path, fileName, PcbFileWildcard(),
wxFD_SAVE | wxFD_OVERWRITE_PROMPT );
if( filedlg.ShowModal() == wxID_CANCEL )
return;
fileName = filedlg.GetPath();
/* Install a dialog frame to choose the mapping
* between gerber layers and Pcbnew layers
*/
LAYERS_MAP_DIALOG* layerdlg = new LAYERS_MAP_DIALOG( this );
int ok = layerdlg->ShowModal();
layerdlg->Destroy();
if( ok != wxID_OK )
return;
m_mruPath = wxFileName( fileName ).GetPath();
GBR_TO_PCB_EXPORTER gbr_exporter( this, fileName );
gbr_exporter.ExportPcb( layerdlg->GetLayersLookUpTable(), layerdlg->GetCopperLayersCount() );
}
bool GBR_TO_PCB_EXPORTER::ExportPcb( LAYER_NUM* aLayerLookUpTable, int aCopperLayers )
{
LOCALE_IO toggle; // toggles on, then off, the C locale.
m_fp = wxFopen( m_pcb_file_name, wxT( "wt" ) );
if( m_fp == NULL )
{
wxString msg;
msg.Printf( _( "Cannot create file \"%s\"" ), GetChars( m_pcb_file_name ) );
DisplayError( m_gerbview_frame, msg );
return false;
}
m_pcbCopperLayersCount = aCopperLayers;
writePcbHeader( aLayerLookUpTable );
// create an image of gerber data
// First: non copper layers:
const int pcbCopperLayerMax = 31;
GERBER_FILE_IMAGE_LIST* images = m_gerbview_frame->GetGerberLayout()->GetImagesList();
for( unsigned layer = 0; layer < images->ImagesMaxCount(); ++layer )
{
GERBER_FILE_IMAGE* gerber = images->GetGbrImage( layer );
if( gerber == NULL ) // Graphic layer not yet used
continue;
LAYER_NUM pcb_layer_number = aLayerLookUpTable[layer];
if( !IsPcbLayer( pcb_layer_number ) )
continue;
if( pcb_layer_number <= pcbCopperLayerMax ) // copper layer
continue;
for( GERBER_DRAW_ITEM* gerb_item : gerber->GetItems() )
export_non_copper_item( gerb_item, pcb_layer_number );
}
// Copper layers
for( unsigned layer = 0; layer < images->ImagesMaxCount(); ++layer )
{
GERBER_FILE_IMAGE* gerber = images->GetGbrImage( layer );
if( gerber == NULL ) // Graphic layer not yet used
continue;
LAYER_NUM pcb_layer_number = aLayerLookUpTable[layer];
if( pcb_layer_number < 0 || pcb_layer_number > pcbCopperLayerMax )
continue;
for( GERBER_DRAW_ITEM* gerb_item : gerber->GetItems() )
export_copper_item( gerb_item, pcb_layer_number );
}
fprintf( m_fp, ")\n" );
fclose( m_fp );
m_fp = NULL;
return true;
}
void GBR_TO_PCB_EXPORTER::export_non_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
{
bool isArc = false;
double angle = 0;
wxPoint seg_start = aGbrItem->m_Start;
wxPoint seg_end = aGbrItem->m_End;
if( aGbrItem->m_Shape == GBR_POLYGON )
{
writePcbPolygonItem( aGbrItem, aLayer );
return;
}
if( aGbrItem->m_Shape == GBR_ARC )
{
double a = atan2( (double) ( aGbrItem->m_Start.y - aGbrItem->m_ArcCentre.y),
(double) ( aGbrItem->m_Start.x - aGbrItem->m_ArcCentre.x ) );
double b = atan2( (double) ( aGbrItem->m_End.y - aGbrItem->m_ArcCentre.y ),
(double) ( aGbrItem->m_End.x - aGbrItem->m_ArcCentre.x ) );
isArc = true;
angle = RAD2DEG(b - a);
seg_start = aGbrItem->m_ArcCentre;
// Ensure arc orientation is CCW
if( angle < 0 )
angle += 360.0;
}
// Reverse Y axis:
seg_start.y = -seg_start.y;
seg_end.y = -seg_end.y;
writePcbLineItem( isArc, seg_start, seg_end, aGbrItem->m_Size.x, aLayer, angle );
}
void GBR_TO_PCB_EXPORTER::export_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
{
switch( aGbrItem->m_Shape )
{
case GBR_SPOT_CIRCLE:
case GBR_SPOT_RECT:
case GBR_SPOT_OVAL:
// replace spots with vias when possible
export_flashed_copper_item( aGbrItem );
break;
case GBR_ARC:
export_segarc_copper_item( aGbrItem, aLayer );
break;
case GBR_POLYGON:
// One can use a polygon or a zone to output a Gerber region.
// none are perfect.
// The current way is use a polygon, as the zone export
// is exprimental and only for tests.
#if 1
writePcbPolygonItem( aGbrItem, aLayer );
#else
// Only for tests:
writePcbZoneItem( aGbrItem, aLayer );
#endif
break;
default:
export_segline_copper_item( aGbrItem, aLayer );
break;
}
}
void GBR_TO_PCB_EXPORTER::export_segline_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
{
wxPoint seg_start, seg_end;
seg_start = aGbrItem->m_Start;
seg_end = aGbrItem->m_End;
// Reverse Y axis:
seg_start.y = -seg_start.y;
seg_end.y = -seg_end.y;
writeCopperLineItem( seg_start, seg_end, aGbrItem->m_Size.x, aLayer );
}
void GBR_TO_PCB_EXPORTER::writeCopperLineItem( wxPoint& aStart, wxPoint& aEnd,
int aWidth, LAYER_NUM aLayer )
{
fprintf( m_fp, "(segment (start %s %s) (end %s %s) (width %s) (layer %s) (net 0))\n",
Double2Str( MapToPcbUnits(aStart.x) ).c_str(),
Double2Str( MapToPcbUnits(aStart.y) ).c_str(),
Double2Str( MapToPcbUnits(aEnd.x) ).c_str(),
Double2Str( MapToPcbUnits(aEnd.y) ).c_str(),
Double2Str( MapToPcbUnits( aWidth ) ).c_str(),
TO_UTF8( GetPCBDefaultLayerName( aLayer ) ) );
}
void GBR_TO_PCB_EXPORTER::export_segarc_copper_item( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
{
double a = atan2( (double) ( aGbrItem->m_Start.y - aGbrItem->m_ArcCentre.y ),
(double) ( aGbrItem->m_Start.x - aGbrItem->m_ArcCentre.x ) );
double b = atan2( (double) ( aGbrItem->m_End.y - aGbrItem->m_ArcCentre.y ),
(double) ( aGbrItem->m_End.x - aGbrItem->m_ArcCentre.x ) );
wxPoint start = aGbrItem->m_Start;
wxPoint end = aGbrItem->m_End;
/* Because Pcbnew does not know arcs in tracks,
* approximate arc by segments (SEG_COUNT__CIRCLE segment per 360 deg)
* The arc is drawn anticlockwise from the start point to the end point.
*/
#define SEG_COUNT_CIRCLE 16
#define DELTA_ANGLE 2 * M_PI / SEG_COUNT_CIRCLE
// calculate the number of segments from a to b.
// we want CNT_PER_360 segments fo a circle
if( a > b )
b += 2 * M_PI;
wxPoint curr_start = start;
wxPoint seg_start, seg_end;
int ii = 1;
for( double rot = a; rot < (b - DELTA_ANGLE); rot += DELTA_ANGLE, ii++ )
{
seg_start = curr_start;
wxPoint curr_end = start;
RotatePoint( &curr_end, aGbrItem->m_ArcCentre,
-RAD2DECIDEG( DELTA_ANGLE * ii ) );
seg_end = curr_end;
// Reverse Y axis:
seg_start.y = -seg_start.y;
seg_end.y = -seg_end.y;
writeCopperLineItem( seg_start, seg_end, aGbrItem->m_Size.x, aLayer );
curr_start = curr_end;
}
if( end != curr_start )
{
seg_start = curr_start;
seg_end = end;
// Reverse Y axis:
seg_start.y = -seg_start.y;
seg_end.y = -seg_end.y;
writeCopperLineItem( seg_start, seg_end, aGbrItem->m_Size.x, aLayer );
}
}
/*
* creates a via from a flashed gerber item.
* Flashed items are usually pads or vias, so we try to export all of them
* using vias
*/
void GBR_TO_PCB_EXPORTER::export_flashed_copper_item( GERBER_DRAW_ITEM* aGbrItem )
{
// First, explore already created vias, before creating a new via
for( unsigned ii = 0; ii < m_vias_coordinates.size(); ii++ )
{
if( m_vias_coordinates[ii] == aGbrItem->m_Start ) // Already created
return;
}
m_vias_coordinates.push_back( aGbrItem->m_Start );
wxPoint via_pos = aGbrItem->m_Start;
int width = (aGbrItem->m_Size.x + aGbrItem->m_Size.y) / 2;
// Reverse Y axis:
via_pos.y = -via_pos.y;
// Layers are Front to Back
fprintf( m_fp, " (via (at %s %s) (size %s)",
Double2Str( MapToPcbUnits(via_pos.x) ).c_str(),
Double2Str( MapToPcbUnits(via_pos.y) ).c_str(),
Double2Str( MapToPcbUnits( width ) ).c_str() );
fprintf( m_fp, " (layers %s %s))\n",
TO_UTF8( GetPCBDefaultLayerName( F_Cu ) ),
TO_UTF8( GetPCBDefaultLayerName( B_Cu ) ) );
}
void GBR_TO_PCB_EXPORTER::writePcbHeader( LAYER_NUM* aLayerLookUpTable )
{
fprintf( m_fp, "(kicad_pcb (version 4) (host Gerbview \"%s\")\n\n",
TO_UTF8( GetBuildVersion() ) );
// Write layers section
fprintf( m_fp, " (layers \n" );
for( int ii = 0; ii < m_pcbCopperLayersCount; ii++ )
{
int id = ii;
if( ii == m_pcbCopperLayersCount-1)
id = B_Cu;
fprintf( m_fp, " (%d %s signal)\n", id, TO_UTF8( GetPCBDefaultLayerName( id ) ) );
}
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::writePcbLineItem( bool aIsArc, wxPoint& aStart, wxPoint& aEnd,
int aWidth, LAYER_NUM aLayer, double aAngle )
{
if( aIsArc && ( aAngle == 360.0 || aAngle == 0 ) )
{
fprintf( m_fp, "(gr_circle (center %s %s) (end %s %s)(layer %s) (width %s))\n",
Double2Str( MapToPcbUnits(aStart.x) ).c_str(),
Double2Str( MapToPcbUnits(aStart.y) ).c_str(),
Double2Str( MapToPcbUnits(aEnd.x) ).c_str(),
Double2Str( MapToPcbUnits(aEnd.y) ).c_str(),
TO_UTF8( GetPCBDefaultLayerName( aLayer ) ),
Double2Str( MapToPcbUnits( aWidth ) ).c_str()
);
}
else if( aIsArc )
{
fprintf( m_fp, "(gr_arc (start %s %s) (end %s %s) (angle %s)(layer %s) (width %s))\n",
Double2Str( MapToPcbUnits(aStart.x) ).c_str(),
Double2Str( MapToPcbUnits(aStart.y) ).c_str(),
Double2Str( MapToPcbUnits(aEnd.x) ).c_str(),
Double2Str( MapToPcbUnits(aEnd.y) ).c_str(),
Double2Str( aAngle ).c_str(),
TO_UTF8( GetPCBDefaultLayerName( aLayer ) ),
Double2Str( MapToPcbUnits( aWidth ) ).c_str()
);
}
else
{
fprintf( m_fp, "(gr_line (start %s %s) (end %s %s)(layer %s) (width %s))\n",
Double2Str( MapToPcbUnits(aStart.x) ).c_str(),
Double2Str( MapToPcbUnits(aStart.y) ).c_str(),
Double2Str( MapToPcbUnits(aEnd.x) ).c_str(),
Double2Str( MapToPcbUnits(aEnd.y) ).c_str(),
TO_UTF8( GetPCBDefaultLayerName( aLayer ) ),
Double2Str( MapToPcbUnits( aWidth ) ).c_str()
);
}
}
void GBR_TO_PCB_EXPORTER::writePcbPolygonItem( GERBER_DRAW_ITEM* aGbrItem, LAYER_NUM aLayer )
{
SHAPE_POLY_SET polys = aGbrItem->m_Polygon;
// 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 ) ).c_str(),
Double2Str( MapToPcbUnits( -poly.CPoint( ii ).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" );
}
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