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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2014 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2014 KiCad Developers, see CHANGELOG.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 common_plotGERBER_functions.cpp
* @brief Common GERBER plot routines.
*/
#include <fctsys.h>
#include <gr_basic.h>
#include <trigo.h>
#include <wxstruct.h>
#include <base_struct.h>
#include <common.h>
#include <plot_common.h>
#include <macros.h>
#include <kicad_string.h>
#include <build_version.h>
GERBER_PLOTTER::GERBER_PLOTTER()
{
workFile = 0;
finalFile = 0;
currentAperture = apertures.end();
// number of digits after the point (number of digits of the mantissa
// Be carefull: the Gerber coordinates are stored in an integer
// so 6 digits (inches) or 5 digits (mm) is a good value
// To avoid overflow, 7 digits (inches) or 6 digits is a max.
// with lower values than 6 digits (inches) or 5 digits (mm),
// Creating self-intersecting polygons from non-intersecting polygons
// happen easily.
m_gerberUnitInch = false;
m_gerberUnitFmt = 6;
}
void GERBER_PLOTTER::SetViewport( const wxPoint& aOffset, double aIusPerDecimil,
double aScale, bool aMirror )
{
wxASSERT( !outputFile );
wxASSERT( aMirror == false );
m_plotMirror = false;
plotOffset = aOffset;
wxASSERT( aScale == 1 ); // aScale parameter is not used in Gerber
plotScale = 1; // Plot scale is *always* 1.0
m_IUsPerDecimil = aIusPerDecimil;
// gives now a default value to iuPerDeviceUnit (because the units of the caller is now known)
// which could be modified later by calling SetGerberCoordinatesFormat()
iuPerDeviceUnit = pow( 10.0, m_gerberUnitFmt ) / ( m_IUsPerDecimil * 10000.0 );
// We don't handle the filmbox, and it's more useful to keep the
// origin at the origin
paperSize.x = 0;
paperSize.y = 0;
SetDefaultLineWidth( 100 * aIusPerDecimil ); // Arbitrary default
}
void GERBER_PLOTTER::SetGerberCoordinatesFormat( int aResolution, bool aUseInches )
{
m_gerberUnitInch = aUseInches;
m_gerberUnitFmt = aResolution;
iuPerDeviceUnit = pow( 10.0, m_gerberUnitFmt ) / ( m_IUsPerDecimil * 10000.0 );
if( ! m_gerberUnitInch )
iuPerDeviceUnit *= 25.4; // gerber output in mm
}
void GERBER_PLOTTER::emitDcode( const DPOINT& pt, int dcode )
{
fprintf( outputFile, "X%dY%dD%02d*\n",
KiROUND( pt.x ), KiROUND( pt.y ), dcode );
}
bool GERBER_PLOTTER::StartPlot()
{
wxASSERT( outputFile );
finalFile = outputFile; // the actual gerber file will be created later
// Create a temporary filename to store gerber file
// note tmpfile() does not work under Vista and W7 in user mode
m_workFilename = filename + wxT(".tmp");
workFile = wxFopen( m_workFilename, wxT( "wt" ));
outputFile = workFile;
wxASSERT( outputFile );
if( outputFile == NULL )
return false;
if( ! m_attribFunction.IsEmpty() )
{
fprintf( outputFile, "%%TF.FileFunction,%s*%%\n",
TO_UTF8( m_attribFunction ) );
}
// Set coordinate format to 3.6 or 4.5 absolute, leading zero omitted
// the number of digits for the integer part of coordintes is needed
// in gerber format, but is not very important when omitting leading zeros
// It is fixed here to 3 (inch) or 4 (mm), but is not actually used
int leadingDigitCount = m_gerberUnitInch ? 3 : 4;
fprintf( outputFile, "%%FSLAX%d%dY%d%d*%%\n",
leadingDigitCount, m_gerberUnitFmt,
leadingDigitCount, m_gerberUnitFmt );
fprintf( outputFile,
"G04 Gerber Fmt %d.%d, Leading zero omitted, Abs format (unit %s)*\n",
leadingDigitCount, m_gerberUnitFmt,
m_gerberUnitInch ? "inch" : "mm" );
wxString Title = creator + wxT( " " ) + GetBuildVersion();
fprintf( outputFile, "G04 Created by KiCad (%s) date %s*\n",
TO_UTF8( Title ), TO_UTF8( DateAndTime() ) );
/* Mass parameter: unit = INCHES/MM */
if( m_gerberUnitInch )
fputs( "%MOIN*%\n", outputFile );
else
fputs( "%MOMM*%\n", outputFile );
/* Specify linear interpol (G01) */
fputs( "G01*\n", outputFile );
fputs( "G04 APERTURE LIST*\n", outputFile );
/* Select the default aperture */
SetCurrentLineWidth( -1 );
return true;
}
bool GERBER_PLOTTER::EndPlot()
{
char line[1024];
wxString msg;
wxASSERT( outputFile );
/* Outfile is actually a temporary file i.e. workFile */
fputs( "M02*\n", outputFile );
fflush( outputFile );
fclose( workFile );
workFile = wxFopen( m_workFilename, wxT( "rt" ));
wxASSERT( workFile );
outputFile = finalFile;
// Placement of apertures in RS274X
while( fgets( line, 1024, workFile ) )
{
fputs( line, outputFile );
if( strcmp( strtok( line, "\n\r" ), "G04 APERTURE LIST*" ) == 0 )
{
writeApertureList();
fputs( "G04 APERTURE END LIST*\n", outputFile );
}
}
fclose( workFile );
fclose( finalFile );
::wxRemoveFile( m_workFilename );
outputFile = 0;
return true;
}
void GERBER_PLOTTER::SetDefaultLineWidth( int width )
{
defaultPenWidth = width;
currentAperture = apertures.end();
}
void GERBER_PLOTTER::SetCurrentLineWidth( int width )
{
int pen_width;
if( width > 0 )
pen_width = width;
else
pen_width = defaultPenWidth;
selectAperture( wxSize( pen_width, pen_width ), APERTURE::Plotting );
currentPenWidth = pen_width;
}
std::vector<APERTURE>::iterator GERBER_PLOTTER::getAperture( const wxSize& size,
APERTURE::APERTURE_TYPE type )
{
int last_D_code = 9;
// Search an existing aperture
std::vector<APERTURE>::iterator tool = apertures.begin();
while( tool != apertures.end() )
{
last_D_code = tool->DCode;
if( (tool->Type == type) && (tool->Size == size) )
return tool;
tool++;
}
// Allocate a new aperture
APERTURE new_tool;
new_tool.Size = size;
new_tool.Type = type;
new_tool.DCode = last_D_code + 1;
apertures.push_back( new_tool );
return apertures.end() - 1;
}
void GERBER_PLOTTER::selectAperture( const wxSize& size,
APERTURE::APERTURE_TYPE type )
{
wxASSERT( outputFile );
if( ( currentAperture == apertures.end() )
|| ( currentAperture->Type != type )
|| ( currentAperture->Size != size ) )
{
// Pick an existing aperture or create a new one
currentAperture = getAperture( size, type );
fprintf( outputFile, "D%d*\n", currentAperture->DCode );
}
}
void GERBER_PLOTTER::writeApertureList()
{
wxASSERT( outputFile );
char cbuf[1024];
// Init
for( std::vector<APERTURE>::iterator tool = apertures.begin();
tool != apertures.end(); tool++ )
{
// apertude sizes are in inch or mm, regardless the
// coordinates format
double fscale = 0.0001 * plotScale / m_IUsPerDecimil; // inches
if(! m_gerberUnitInch )
fscale *= 25.4; // size in mm
char* text = cbuf + sprintf( cbuf, "%%ADD%d", tool->DCode );
/* Please note: the Gerber specs for mass parameters say that
exponential syntax is *not* allowed and the decimal point should
also be always inserted. So the %g format is ruled out, but %f is fine
(the # modifier forces the decimal point). Sadly the %f formatter
can't remove trailing zeros but thats not a problem, since nothing
forbid it (the file is only slightly longer) */
switch( tool->Type )
{
case APERTURE::Circle:
sprintf( text, "C,%#f*%%\n", tool->Size.x * fscale );
break;
case APERTURE::Rect:
sprintf( text, "R,%#fX%#f*%%\n",
tool->Size.x * fscale,
tool->Size.y * fscale );
break;
case APERTURE::Plotting:
sprintf( text, "C,%#f*%%\n", tool->Size.x * fscale );
break;
case APERTURE::Oval:
sprintf( text, "O,%#fX%#f*%%\n",
tool->Size.x * fscale,
tool->Size.y * fscale );
break;
}
fputs( cbuf, outputFile );
}
}
void GERBER_PLOTTER::PenTo( const wxPoint& aPos, char plume )
{
wxASSERT( outputFile );
DPOINT pos_dev = userToDeviceCoordinates( aPos );
switch( plume )
{
case 'Z':
break;
case 'U':
emitDcode( pos_dev, 2 );
break;
case 'D':
emitDcode( pos_dev, 1 );
}
penState = plume;
}
void GERBER_PLOTTER::Rect( const wxPoint& p1, const wxPoint& p2, FILL_T fill, int width )
{
std::vector< wxPoint > cornerList;
// Build corners list
cornerList.push_back( p1 );
wxPoint corner(p1.x, p2.y);
cornerList.push_back( corner );
cornerList.push_back( p2 );
corner.x = p2.x;
corner.y = p1.y;
cornerList.push_back( corner );
cornerList.push_back( p1 );
PlotPoly( cornerList, fill, width );
}
void GERBER_PLOTTER::Circle( const wxPoint& aCenter, int aDiameter, FILL_T aFill, int aWidth )
{
Arc( aCenter, 0, 3600, aDiameter / 2, aFill, aWidth );
}
void GERBER_PLOTTER::Arc( const wxPoint& aCenter, double aStAngle, double aEndAngle,
int aRadius, FILL_T aFill, int aWidth )
{
wxASSERT( outputFile );
wxPoint start, end;
start.x = aCenter.x + KiROUND( cosdecideg( aRadius, aStAngle ) );
start.y = aCenter.y - KiROUND( sindecideg( aRadius, aStAngle ) );
SetCurrentLineWidth( aWidth );
MoveTo( start );
end.x = aCenter.x + KiROUND( cosdecideg( aRadius, aEndAngle ) );
end.y = aCenter.y - KiROUND( sindecideg( aRadius, aEndAngle ) );
DPOINT devEnd = userToDeviceCoordinates( end );
DPOINT devCenter = userToDeviceCoordinates( aCenter ) - userToDeviceCoordinates( start );
fprintf( outputFile, "G75*\n" ); // Multiquadrant mode
if( aStAngle < aEndAngle )
fprintf( outputFile, "G03" );
else
fprintf( outputFile, "G02" );
fprintf( outputFile, "X%dY%dI%dJ%dD01*\n",
KiROUND( devEnd.x ), KiROUND( devEnd.y ),
KiROUND( devCenter.x ), KiROUND( devCenter.y ) );
fprintf( outputFile, "G01*\n" ); // Back to linear interp.
}
void GERBER_PLOTTER:: PlotPoly( const std::vector< wxPoint >& aCornerList,
FILL_T aFill, int aWidth )
{
if( aCornerList.size() <= 1 )
return;
// Gerber format does not know filled polygons with thick outline
// Therefore, to plot a filled polygon with outline having a thickness,
// one should plot outline as thick segments
SetCurrentLineWidth( aWidth );
if( aFill )
{
fputs( "G36*\n", outputFile );
MoveTo( aCornerList[0] );
for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
LineTo( aCornerList[ii] );
FinishTo( aCornerList[0] );
fputs( "G37*\n", outputFile );
}
if( aWidth > 0 )
{
MoveTo( aCornerList[0] );
for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
LineTo( aCornerList[ii] );
// Ensure the thick outline is closed for filled polygons
// (if not filled, could be only a polyline)
if( aFill && ( aCornerList[aCornerList.size()-1] != aCornerList[0] ) )
LineTo( aCornerList[0] );
PenFinish();
}
}
void GERBER_PLOTTER::FlashPadCircle( const wxPoint& pos, int diametre, EDA_DRAW_MODE_T trace_mode )
{
wxASSERT( outputFile );
wxSize size( diametre, diametre );
switch( trace_mode )
{
case LINE:
case SKETCH:
SetCurrentLineWidth( -1 );
Circle( pos, diametre - currentPenWidth, NO_FILL );
break;
case FILLED:
DPOINT pos_dev = userToDeviceCoordinates( pos );
selectAperture( size, APERTURE::Circle );
emitDcode( pos_dev, 3 );
break;
}
}
void GERBER_PLOTTER::FlashPadOval( const wxPoint& pos, const wxSize& aSize, double orient,
EDA_DRAW_MODE_T trace_mode )
{
wxASSERT( outputFile );
int x0, y0, x1, y1, delta;
wxSize size( aSize );
/* Plot a flashed shape. */
if( ( orient == 0 || orient == 900 || orient == 1800 || orient == 2700 )
&& trace_mode == FILLED )
{
if( orient == 900 || orient == 2700 ) /* orientation turned 90 deg. */
EXCHG( size.x, size.y );
DPOINT pos_dev = userToDeviceCoordinates( pos );
selectAperture( size, APERTURE::Oval );
emitDcode( pos_dev, 3 );
}
else /* Plot pad as a segment. */
{
if( size.x > size.y )
{
EXCHG( size.x, size.y );
if( orient < 2700 )
orient += 900;
else
orient -= 2700;
}
if( trace_mode == FILLED )
{
/* XXX to do: use an aperture macro to declare the rotated pad */
/* The pad is reduced to an oval with dy > dx */
delta = size.y - size.x;
x0 = 0;
y0 = -delta / 2;
x1 = 0;
y1 = delta / 2;
RotatePoint( &x0, &y0, orient );
RotatePoint( &x1, &y1, orient );
ThickSegment( wxPoint( pos.x + x0, pos.y + y0 ),
wxPoint( pos.x + x1, pos.y + y1 ),
size.x, trace_mode );
}
else
{
sketchOval( pos, size, orient, -1 );
}
}
}
void GERBER_PLOTTER::FlashPadRect( const wxPoint& pos, const wxSize& aSize,
double orient, EDA_DRAW_MODE_T trace_mode )
{
wxASSERT( outputFile );
wxSize size( aSize );
// Plot as an aperture flash
switch( int( orient ) )
{
case 900:
case 2700: // rotation of 90 degrees or 270 swaps sizes
EXCHG( size.x, size.y );
// Pass through
case 0:
case 1800:
switch( trace_mode )
{
case LINE:
case SKETCH:
SetCurrentLineWidth( -1 );
Rect( wxPoint( pos.x - (size.x - currentPenWidth) / 2,
pos.y - (size.y - currentPenWidth) / 2 ),
wxPoint( pos.x + (size.x - currentPenWidth) / 2,
pos.y + (size.y - currentPenWidth) / 2 ),
NO_FILL );
break;
case FILLED:
DPOINT pos_dev = userToDeviceCoordinates( pos );
selectAperture( size, APERTURE::Rect );
emitDcode( pos_dev, 3 );
break;
}
break;
default: // plot pad shape as polygon
{
// XXX to do: use an aperture macro to declare the rotated pad
wxPoint coord[4];
// coord[0] is assumed the lower left
// coord[1] is assumed the upper left
// coord[2] is assumed the upper right
// coord[3] is assumed the lower right
/* Trace the outline. */
coord[0].x = -size.x/2; // lower left
coord[0].y = size.y/2;
coord[1].x = -size.x/2; // upper left
coord[1].y = -size.y/2;
coord[2].x = size.x/2; // upper right
coord[2].y = -size.y/2;
coord[3].x = size.x/2; // lower right
coord[3].y = size.y/2;
FlashPadTrapez( pos, coord, orient, trace_mode );
}
break;
}
}
void GERBER_PLOTTER::FlashPadTrapez( const wxPoint& aPadPos, const wxPoint* aCorners,
double aPadOrient, EDA_DRAW_MODE_T aTrace_Mode )
{
// XXX to do: use an aperture macro to declare the pad
// polygon corners list
std::vector< wxPoint > cornerList;
for( int ii = 0; ii < 4; ii++ )
cornerList.push_back( aCorners[ii] );
// Draw the polygon and fill the interior as required
for( unsigned ii = 0; ii < 4; ii++ )
{
RotatePoint( &cornerList[ii], aPadOrient );
cornerList[ii] += aPadPos;
}
// Close the polygon
cornerList.push_back( cornerList[0] );
SetCurrentLineWidth( -1 );
PlotPoly( cornerList, aTrace_Mode==FILLED ? FILLED_SHAPE : NO_FILL );
}
void GERBER_PLOTTER::SetLayerPolarity( bool aPositive )
{
if( aPositive )
fprintf( outputFile, "%%LPD*%%\n" );
else
fprintf( outputFile, "%%LPC*%%\n" );
}
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