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kicad/pcbnew/import_dxf/dxf2brd_items.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 1992-2018 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 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
*/
// The DXF reader lib (libdxfrw) comes from LibreCAD project, a 2D CAD program
// libdxfrw can be found on http://sourceforge.net/projects/libdxfrw/
// or (latest sources) on
// https://github.com/LibreCAD/LibreCAD/tree/master/libraries/libdxfrw/src
//
// There is no doc to use it, but have a look to
// https://github.com/LibreCAD/LibreCAD/blob/master/librecad/src/lib/filters/rs_filterdxf.cpp
// and https://github.com/LibreCAD/LibreCAD/blob/master/librecad/src/lib/filters/rs_filterdxf.h
// Each time a dxf entity is read, a "call back" fuction is called
// like void DXF2BRD_CONVERTER::addLine( const DRW_Line& data ) when a line is read.
// this function just add the BOARD entity from dxf parameters (start and end point ...)
#include "dxf2brd_items.h"
#include <wx/arrstr.h>
#include <wx/regex.h>
#include <trigo.h>
#include <macros.h>
#include <class_board.h>
#include <class_drawsegment.h>
#include <class_edge_mod.h>
#include <class_pcb_text.h>
#include <class_text_mod.h>
#include "common.h"
// minimum bulge value before resorting to a line segment;
// the value 0.0218 is equivalent to about 5 degrees arc,
#define MIN_BULGE 0.0218
DXF2BRD_CONVERTER::DXF2BRD_CONVERTER() : DL_CreationAdapter()
{
m_xOffset = 0.0; // X coord offset for conversion (in mm)
m_yOffset = 0.0; // Y coord offset for conversion (in mm)
m_DXF2mm = 1.0; // The scale factor to convert DXF units to mm
m_version = 0; // the dxf version, not yet used
m_defaultThickness = 0.2; // default thickness (in mm)
m_brdLayer = Dwgs_User; // The default import layer
m_importAsfootprintGraphicItems = true;
}
DXF2BRD_CONVERTER::~DXF2BRD_CONVERTER()
{
}
// coordinate conversions from dxf to internal units
int DXF2BRD_CONVERTER::mapX( double aDxfCoordX )
{
return Millimeter2iu( m_xOffset + ( aDxfCoordX * m_DXF2mm ) );
}
int DXF2BRD_CONVERTER::mapY( double aDxfCoordY )
{
return Millimeter2iu( m_yOffset - ( aDxfCoordY * m_DXF2mm ) );
}
int DXF2BRD_CONVERTER::mapDim( double aDxfValue )
{
return Millimeter2iu( aDxfValue * m_DXF2mm );
}
int DXF2BRD_CONVERTER::mapWidth( double aDxfWidth )
{
// Always return the default line width
#if 0
// mapWidth returns the aDxfValue if aDxfWidth > 0 m_defaultThickness
if( aDxfWidth > 0.0 )
return Millimeter2iu( aDxfWidth * m_DXF2mm );
#endif
return Millimeter2iu( m_defaultThickness );
}
bool DXF2BRD_CONVERTER::ImportDxfFile( const wxString& aFile )
{
LOCALE_IO locale;
DL_Dxf dxf_reader;
std::string filename = TO_UTF8( aFile );
bool success = true;
if( !dxf_reader.in( filename, this ) ) // if file open failed
success = false;
return success;
}
void DXF2BRD_CONVERTER::reportMsg( const char* aMessage )
{
// Add message to keep trace of not handled dxf entities
m_messages += aMessage;
m_messages += '\n';
}
void DXF2BRD_CONVERTER::addSpline( const DL_SplineData& aData )
{
// Called when starting reading a spline
m_curr_entity.Clear();
m_curr_entity.m_EntityParseStatus = 1;
m_curr_entity.m_EntityFlag = aData.flags;
m_curr_entity.m_EntityType = DL_ENTITY_SPLINE;
m_curr_entity.m_SplineDegree = aData.degree;
m_curr_entity.m_SplineTangentStartX = aData.tangentStartX;
m_curr_entity.m_SplineTangentStartY = aData.tangentStartY;
m_curr_entity.m_SplineTangentEndX = aData.tangentEndX;
m_curr_entity.m_SplineTangentEndY = aData.tangentEndY;
m_curr_entity.m_SplineKnotsCount = aData.nKnots;
m_curr_entity.m_SplineControlCount = aData.nControl;
m_curr_entity.m_SplineFitCount = aData.nFit;
}
void DXF2BRD_CONVERTER::addControlPoint( const DL_ControlPointData& aData )
{
// Called for every spline control point, when reading a spline entity
m_curr_entity.m_SplineControlPointList.push_back( SPLINE_CTRL_POINT( aData.x , aData.y, aData.w ) );
}
void DXF2BRD_CONVERTER::addFitPoint( const DL_FitPointData& aData )
{
// Called for every spline fit point, when reading a spline entity
// we store only the X,Y coord values in a wxRealPoint
m_curr_entity.m_SplineFitPointList.push_back( wxRealPoint( aData.x, aData.y ) );
}
void DXF2BRD_CONVERTER::addKnot( const DL_KnotData& aData)
{
// Called for every spline knot value, when reading a spline entity
m_curr_entity.m_SplineKnotsList.push_back( aData.k );
}
void DXF2BRD_CONVERTER::addLayer( const DL_LayerData& aData )
{
// Not yet useful in Pcbnew.
#if 0
wxString name = wxString::FromUTF8( aData.name.c_str() );
wxLogMessage( name );
#endif
}
void DXF2BRD_CONVERTER::addLine( const DL_LineData& aData )
{
DRAWSEGMENT* segm = ( m_importAsfootprintGraphicItems ) ?
static_cast< DRAWSEGMENT* >( new EDGE_MODULE( NULL ) ) : new DRAWSEGMENT;
segm->SetLayer( ToLAYER_ID( m_brdLayer ) );
wxPoint start( mapX( aData.x1 ), mapY( aData.y1 ) );
segm->SetStart( start );
wxPoint end( mapX( aData.x2 ), mapY( aData.y2 ) );
segm->SetEnd( end );
segm->SetWidth( mapWidth( attributes.getWidth() ) );
m_newItemsList.push_back( segm );
}
void DXF2BRD_CONVERTER::addPolyline(const DL_PolylineData& aData )
{
// Convert DXF Polylines into a series of KiCad Lines and Arcs.
// A Polyline (as opposed to a LWPolyline) may be a 3D line or
// even a 3D Mesh. The only type of Polyline which is guaranteed
// to import correctly is a 2D Polyline in X and Y, which is what
// we assume of all Polylines. The width used is the width of the Polyline.
// per-vertex line widths, if present, are ignored.
m_curr_entity.Clear();
m_curr_entity.m_EntityParseStatus = 1;
m_curr_entity.m_EntityFlag = aData.flags;
m_curr_entity.m_EntityType = DL_ENTITY_POLYLINE;
}
void DXF2BRD_CONVERTER::addVertex( const DL_VertexData& aData )
{
if( m_curr_entity.m_EntityParseStatus == 0 )
return; // Error
int lineWidth = mapWidth( attributes.getWidth() );
const DL_VertexData* vertex = &aData;
if( m_curr_entity.m_EntityParseStatus == 1 ) // This is the first vertex of an entity
{
m_curr_entity.m_LastCoordinate.x = m_xOffset + vertex->x * m_DXF2mm;
m_curr_entity.m_LastCoordinate.y = m_yOffset - vertex->y * m_DXF2mm;
m_curr_entity.m_PolylineStart = m_curr_entity.m_LastCoordinate;
m_curr_entity.m_BulgeVertex = vertex->bulge;
m_curr_entity.m_EntityParseStatus = 2;
return;
}
wxRealPoint seg_end( m_xOffset + vertex->x * m_DXF2mm,
m_yOffset - vertex->y * m_DXF2mm );
if( std::abs( m_curr_entity.m_BulgeVertex ) < MIN_BULGE )
insertLine( m_curr_entity.m_LastCoordinate, seg_end, lineWidth );
else
insertArc( m_curr_entity.m_LastCoordinate, seg_end, m_curr_entity.m_BulgeVertex, lineWidth );
m_curr_entity.m_LastCoordinate = seg_end;
m_curr_entity.m_BulgeVertex = vertex->bulge;
}
void DXF2BRD_CONVERTER::endEntity()
{
if( m_curr_entity.m_EntityType == DL_ENTITY_POLYLINE ||
m_curr_entity.m_EntityType == DL_ENTITY_LWPOLYLINE )
{
// Polyline flags bit 0 indicates closed (1) or open (0) polyline
if( m_curr_entity.m_EntityFlag & 1 )
{
int lineWidth = mapWidth( attributes.getWidth() );
if( std::abs( m_curr_entity.m_BulgeVertex ) < MIN_BULGE )
insertLine( m_curr_entity.m_LastCoordinate, m_curr_entity.m_PolylineStart, lineWidth );
else
insertArc( m_curr_entity.m_LastCoordinate, m_curr_entity.m_PolylineStart,
m_curr_entity.m_BulgeVertex, lineWidth );
}
}
if( m_curr_entity.m_EntityType == DL_ENTITY_SPLINE )
{
int lineWidth = mapWidth( attributes.getWidth() );
insertSpline( lineWidth );
}
m_curr_entity.Clear();
}
void DXF2BRD_CONVERTER::addCircle( const DL_CircleData& aData )
{
DRAWSEGMENT* segm = ( m_importAsfootprintGraphicItems ) ?
static_cast< DRAWSEGMENT* >( new EDGE_MODULE( NULL ) ) : new DRAWSEGMENT;
segm->SetLayer( ToLAYER_ID( m_brdLayer ) );
segm->SetShape( S_CIRCLE );
wxPoint center( mapX( aData.cx ), mapY( aData.cy ) );
segm->SetCenter( center );
wxPoint circle_start( mapX( aData.cx + aData.radius ), mapY( aData.cy ) );
segm->SetArcStart( circle_start );
segm->SetWidth( mapWidth( attributes.getWidth() ) );
m_newItemsList.push_back( segm );
}
/*
* Import Arc entities.
*/
void DXF2BRD_CONVERTER::addArc( const DL_ArcData& aData )
{
DRAWSEGMENT* segm = ( m_importAsfootprintGraphicItems ) ?
static_cast< DRAWSEGMENT* >( new EDGE_MODULE( NULL ) ) : new DRAWSEGMENT;
segm->SetLayer( ToLAYER_ID( m_brdLayer ) );
segm->SetShape( S_ARC );
// Init arc centre:
wxPoint center( mapX( aData.cx ), mapY( aData.cy ) );
segm->SetCenter( center );
// Init arc start point
double arcStartx = aData.radius;
double arcStarty = 0;
double startangle = aData.angle1;
double endangle = aData.angle2;
RotatePoint( &arcStartx, &arcStarty, -RAD2DECIDEG( startangle ) );
wxPoint arcStart( mapX( arcStartx + aData.cx ),
mapY( arcStarty + aData.cy ) );
segm->SetArcStart( arcStart );
// calculate arc angle (arcs are CCW, and should be < 0 in Pcbnew)
double angle = -RAD2DECIDEG( endangle - startangle );
if( angle > 0.0 )
angle -= 3600.0;
segm->SetAngle( angle );
segm->SetWidth( mapWidth( attributes.getWidth() ) );
m_newItemsList.push_back( segm );
}
void DXF2BRD_CONVERTER::addText( const DL_TextData& aData )
{
BOARD_ITEM* brdItem;
EDA_TEXT* textItem;
if( m_importAsfootprintGraphicItems )
{
TEXTE_MODULE* modText = new TEXTE_MODULE( NULL );
brdItem = static_cast< BOARD_ITEM* >( modText );
textItem = static_cast< EDA_TEXT* >( modText );
}
else
{
TEXTE_PCB* pcbText = new TEXTE_PCB( NULL );
brdItem = static_cast< BOARD_ITEM* >( pcbText );
textItem = static_cast< EDA_TEXT* >( pcbText );
}
brdItem->SetLayer( ToLAYER_ID( m_brdLayer ) );
wxPoint refPoint( mapX( aData.ipx ), mapY( aData.ipy ) );
wxPoint secPoint( mapX( aData.apx ), mapY( aData.apy ) );
if( aData.vJustification != 0 || aData.hJustification != 0 || aData.hJustification == 4 )
{
if( aData.hJustification != 3 && aData.hJustification != 5 )
{
wxPoint tmp = secPoint;
secPoint = refPoint;
refPoint = tmp;
}
}
switch( aData.vJustification )
{
case 0: //DRW_Text::VBaseLine:
textItem->SetVertJustify( GR_TEXT_VJUSTIFY_BOTTOM );
break;
case 1: //DRW_Text::VBottom:
textItem->SetVertJustify( GR_TEXT_VJUSTIFY_BOTTOM );
break;
case 2: //DRW_Text::VMiddle:
textItem->SetVertJustify( GR_TEXT_VJUSTIFY_CENTER );
break;
case 3: //DRW_Text::VTop:
textItem->SetVertJustify( GR_TEXT_VJUSTIFY_TOP );
break;
}
switch( aData.hJustification )
{
case 0: //DRW_Text::HLeft:
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
break;
case 1: //DRW_Text::HCenter:
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_CENTER );
break;
case 2: //DRW_Text::HRight:
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
break;
case 3: //DRW_Text::HAligned:
// no equivalent options in text pcb.
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
break;
case 4: //DRW_Text::HMiddle:
// no equivalent options in text pcb.
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_CENTER );
break;
case 5: //DRW_Text::HFit:
// no equivalent options in text pcb.
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
break;
}
#if 0
wxString sty = wxString::FromUTF8( aData.style.c_str() );
sty = sty.ToLower();
if( aData.textgen == 2 )
{
// Text dir = left to right;
} else if( aData.textgen == 4 )
{
// Text dir = top to bottom;
} else
{
}
#endif
wxString text = toNativeString( wxString::FromUTF8( aData.text.c_str() ) );
textItem->SetTextPos( refPoint );
textItem->SetTextAngle( aData.angle * 10 );
// The 0.8 factor gives a better height/width ratio with our font
textItem->SetTextWidth( mapDim( aData.height * 0.8 ) );
textItem->SetTextHeight( mapDim( aData.height ) );
textItem->SetThickness( mapWidth( aData.height * 0.15 ) ); // Gives a reasonable text thickness
textItem->SetText( text );
m_newItemsList.push_back( static_cast< BOARD_ITEM* >( brdItem ) );
}
void DXF2BRD_CONVERTER::addMText( const DL_MTextData& aData )
{
wxString text = toNativeString( wxString::FromUTF8( aData.text.c_str() ) );
wxString attrib, tmp;
/* Some texts start by '\' and have formating chars (font name, font option...)
* ending with ';'
* Here are some mtext formatting codes:
* Format code Purpose
* \0...\o Turns overline on and off
* \L...\l Turns underline on and off
* \~ Inserts a nonbreaking space
\\ Inserts a backslash
\\\{...\} Inserts an opening and closing brace
\\ \File name; Changes to the specified font file
\\ \Hvalue; Changes to the text height specified in drawing units
\\ \Hvaluex; Changes the text height to a multiple of the current text height
\\ \S...^...; Stacks the subsequent text at the \, #, or ^ symbol
\\ \Tvalue; Adjusts the space between characters, from.75 to 4 times
\\ \Qangle; Changes obliquing angle
\\ \Wvalue; Changes width factor to produce wide text
\\ \A Sets the alignment value; valid values: 0, 1, 2 (bottom, center, top) while( text.StartsWith( wxT("\\") ) )
*/
while( text.StartsWith( wxT( "\\" ) ) )
{
attrib << text.BeforeFirst( ';' );
tmp = text.AfterFirst( ';' );
text = tmp;
}
BOARD_ITEM* brdItem;
EDA_TEXT* textItem;
if( m_importAsfootprintGraphicItems )
{
TEXTE_MODULE* modText = new TEXTE_MODULE( NULL );
brdItem = static_cast< BOARD_ITEM* >( modText );
textItem = static_cast< EDA_TEXT* >( modText );
}
else
{
TEXTE_PCB* pcbText = new TEXTE_PCB( NULL );
brdItem = static_cast< BOARD_ITEM* >( pcbText );
textItem = static_cast< EDA_TEXT* >( pcbText );
}
brdItem->SetLayer( ToLAYER_ID( m_brdLayer ) );
wxPoint textpos( mapX( aData.ipx ), mapY( aData.ipy ) );
textItem->SetTextPos( textpos );
textItem->SetTextAngle( aData.angle * 10 );
// The 0.8 factor gives a better height/width ratio with our font
textItem->SetTextWidth( mapDim( aData.height * 0.8 ) );
textItem->SetTextHeight( mapDim( aData.height ) );
textItem->SetThickness( mapWidth( aData.height * 0.15 ) ); // Gives a reasonable text thickness
textItem->SetText( text );
// Initialize text justifications:
if( aData.attachmentPoint <= 3 )
{
textItem->SetVertJustify( GR_TEXT_VJUSTIFY_TOP );
}
else if( aData.attachmentPoint <= 6 )
{
textItem->SetVertJustify( GR_TEXT_VJUSTIFY_CENTER );
}
else
{
textItem->SetVertJustify( GR_TEXT_VJUSTIFY_BOTTOM );
}
if( aData.attachmentPoint % 3 == 1 )
{
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
}
else if( aData.attachmentPoint % 3 == 2 )
{
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_CENTER );
}
else
{
textItem->SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
}
#if 0 // These setting have no meaning in Pcbnew
if( data.alignH == 1 )
{
// Text is left to right;
}
else if( data.alignH == 3 )
{
// Text is top to bottom;
}
else
{
// use ByStyle;
}
if( aData.alignV == 1 )
{
// use AtLeast;
}
else
{
// useExact;
}
#endif
m_newItemsList.push_back( static_cast< BOARD_ITEM* >( brdItem ) );
}
void DXF2BRD_CONVERTER::setVariableInt( const std::string& key, int value, int code )
{
// Called for every int variable in the DXF file (e.g. "$INSUNITS").
if( key == "$DWGCODEPAGE" )
{
m_codePage = value;
return;
}
if( key == "$INSUNITS" ) // Drawing units
{
switch( value )
{
case 1: // inches
m_DXF2mm = 25.4;
break;
case 2: // feet
m_DXF2mm = 304.8;
break;
case 4: // mm
m_DXF2mm = 1.0;
break;
case 5: // centimeters
m_DXF2mm = 10.0;
break;
case 6: // meters
m_DXF2mm = 1000.0;
break;
case 8: // microinches
m_DXF2mm = 2.54e-5;
break;
case 9: // mils
m_DXF2mm = 0.0254;
break;
case 10: // yards
m_DXF2mm = 914.4;
break;
case 11: // Angstroms
m_DXF2mm = 1.0e-7;
break;
case 12: // nanometers
m_DXF2mm = 1.0e-6;
break;
case 13: // micrometers
m_DXF2mm = 1.0e-3;
break;
case 14: // decimeters
m_DXF2mm = 100.0;
break;
default:
// use the default of 1.0 for:
// 0: Unspecified Units
// 3: miles
// 7: kilometers
// 15: decameters
// 16: hectometers
// 17: gigameters
// 18: AU
// 19: lightyears
// 20: parsecs
m_DXF2mm = 1.0;
break;
}
return;
}
}
void DXF2BRD_CONVERTER::setVariableString( const std::string& key, const std::string& value,
int code )
{
// Called for every string variable in the DXF file (e.g. "$ACADVER").
}
wxString DXF2BRD_CONVERTER::toDxfString( const wxString& aStr )
{
wxString res;
int j = 0;
for( unsigned i = 0; i<aStr.length(); ++i )
{
int c = aStr[i];
if( c > 175 || c < 11 )
{
res.append( aStr.Mid( j, i - j ) );
j = i;
switch( c )
{
case 0x0A:
res += wxT( "\\P" );
break;
// diameter:
#ifdef __WINDOWS_
// windows, as always, is special.
case 0x00D8:
#else
case 0x2205:
#endif
res += wxT( "%%C" );
break;
// degree:
case 0x00B0:
res += wxT( "%%D" );
break;
// plus/minus
case 0x00B1:
res += wxT( "%%P" );
break;
default:
j--;
break;
}
j++;
}
}
res.append( aStr.Mid( j ) );
return res;
}
wxString DXF2BRD_CONVERTER::toNativeString( const wxString& aData )
{
wxString res;
// Ignore font tags:
int j = 0;
for( unsigned i = 0; i < aData.length(); ++i )
{
if( aData[ i ] == 0x7B ) // is '{' ?
{
if( aData[ i + 1 ] == 0x5c && aData[ i + 2 ] == 0x66 ) // is "\f" ?
{
// found font tag, append parsed part
res.append( aData.Mid( j, i - j ) );
// skip to ';'
for( unsigned k = i + 3; k < aData.length(); ++k )
{
if( aData[ k ] == 0x3B )
{
i = j = ++k;
break;
}
}
// add to '}'
for( unsigned k = i; k < aData.length(); ++k )
{
if( aData[ k ] == 0x7D )
{
res.append( aData.Mid( i, k - i ) );
i = j = ++k;
break;
}
}
}
}
}
res.append( aData.Mid( j ) );
#if 1
wxRegEx regexp;
// Line feed:
regexp.Compile( wxT( "\\\\P" ) );
regexp.Replace( &res, wxT( "\n" ) );
// Space:
regexp.Compile( wxT( "\\\\~" ) );
regexp.Replace( &res, wxT( " " ) );
// diameter:
regexp.Compile( wxT( "%%[cC]" ) );
#ifdef __WINDOWS__
// windows, as always, is special.
regexp.Replace( &res, wxChar( 0xD8 ) );
#else
// Empty_set, diameter is 0x2300
regexp.Replace( &res, wxChar( 0x2205 ) );
#endif
// degree:
regexp.Compile( wxT( "%%[dD]" ) );
regexp.Replace( &res, wxChar( 0x00B0 ) );
// plus/minus
regexp.Compile( wxT( "%%[pP]" ) );
regexp.Replace( &res, wxChar( 0x00B1 ) );
#endif
return res;
}
void DXF2BRD_CONVERTER::addTextStyle( const DL_StyleData& aData )
{
// TODO
}
void DXF2BRD_CONVERTER::insertLine( const wxRealPoint& aSegStart,
const wxRealPoint& aSegEnd, int aWidth )
{
DRAWSEGMENT* segm = ( m_importAsfootprintGraphicItems ) ?
static_cast< DRAWSEGMENT* >( new EDGE_MODULE( NULL ) ) : new DRAWSEGMENT;
wxPoint segment_startpoint( Millimeter2iu( aSegStart.x ), Millimeter2iu( aSegStart.y ) );
wxPoint segment_endpoint( Millimeter2iu( aSegEnd.x ), Millimeter2iu( aSegEnd.y ) );
segm->SetLayer( ToLAYER_ID( m_brdLayer ) );
segm->SetStart( segment_startpoint );
segm->SetEnd( segment_endpoint );
segm->SetWidth( aWidth );
m_newItemsList.push_back( segm );
}
void DXF2BRD_CONVERTER::insertArc( const wxRealPoint& aSegStart, const wxRealPoint& aSegEnd,
double aBulge, int aWidth )
{
DRAWSEGMENT* segm = ( m_importAsfootprintGraphicItems ) ?
static_cast< DRAWSEGMENT* >( new EDGE_MODULE( NULL ) ) : new DRAWSEGMENT;
wxPoint segment_startpoint( Millimeter2iu( aSegStart.x ), Millimeter2iu( aSegStart.y ) );
wxPoint segment_endpoint( Millimeter2iu( aSegEnd.x ), Millimeter2iu( aSegEnd.y ) );
// ensure aBulge represents an angle from +/- ( 0 .. approx 359.8 deg )
if( aBulge < -2000.0 )
aBulge = -2000.0;
else if( aBulge > 2000.0 )
aBulge = 2000.0;
double ang = 4.0 * atan( aBulge );
// reflect the Y values to put everything in a RHCS
wxRealPoint sp( aSegStart.x, -aSegStart.y );
wxRealPoint ep( aSegEnd.x, -aSegEnd.y );
// angle from end->start
double offAng = atan2( ep.y - sp.y, ep.x - sp.x );
// length of subtended segment = 1/2 distance between the 2 points
double d = 0.5 * sqrt( (sp.x - ep.x) * (sp.x - ep.x) + (sp.y - ep.y) * (sp.y - ep.y) );
// midpoint of the subtended segment
double xm = ( sp.x + ep.x ) * 0.5;
double ym = ( sp.y + ep.y ) * 0.5;
double radius = d / sin( ang * 0.5 );
if( radius < 0.0 )
radius = -radius;
// calculate the height of the triangle with base d and hypotenuse r
double dh2 = radius * radius - d * d;
// this should only ever happen due to rounding errors when r == d
if( dh2 < 0.0 )
dh2 = 0.0;
double h = sqrt( dh2 );
if( ang < 0.0 )
offAng -= M_PI_2;
else
offAng += M_PI_2;
// for angles greater than 180 deg we need to flip the
// direction in which the arc center is found relative
// to the midpoint of the subtended segment.
if( ang < -M_PI )
offAng += M_PI;
else if( ang > M_PI )
offAng -= M_PI;
// center point
double cx = h * cos( offAng ) + xm;
double cy = h * sin( offAng ) + ym;
segm->SetLayer( ToLAYER_ID( m_brdLayer ) );
segm->SetShape( S_ARC );
segm->SetCenter( wxPoint( Millimeter2iu( cx ), Millimeter2iu( -cy ) ) );
if( ang < 0.0 )
{
segm->SetArcStart( wxPoint( Millimeter2iu( ep.x ), Millimeter2iu( -ep.y ) ) );
segm->SetAngle( RAD2DECIDEG( ang ) );
}
else
{
segm->SetArcStart( wxPoint( Millimeter2iu( sp.x ), Millimeter2iu( -sp.y ) ) );
segm->SetAngle( RAD2DECIDEG( -ang ) );
}
segm->SetWidth( aWidth );
m_newItemsList.push_back( segm );
return;
}
#include "tinyspline_lib/tinysplinecpp.h"
void DXF2BRD_CONVERTER::insertSpline( int aWidth )
{
#if 0 // Debug only
wxLogMessage("spl deg %d kn %d ctr %d fit %d",
m_curr_entity.m_SplineDegree,
m_curr_entity.m_SplineKnotsList.size(),
m_curr_entity.m_SplineControlPointList.size(),
m_curr_entity.m_SplineFitPointList.size() );
#endif
// Very basic conversion to segments
unsigned imax = m_curr_entity.m_SplineControlPointList.size();
if( imax < 2 ) // malformed spline
return;
#if 0 // set to 1 to approximate the spline by segments between 2 control points
wxPoint startpoint( mapX( m_curr_entity.m_SplineControlPointList[0].m_x ),
mapY( m_curr_entity.m_SplineControlPointList[0].m_y ) );
for( unsigned int ii = 1; ii < imax; ++ii )
{
wxPoint endpoint( mapX( m_curr_entity.m_SplineControlPointList[ii].m_x ),
mapY( m_curr_entity.m_SplineControlPointList[ii].m_y ) );
if( startpoint != endpoint )
{
DRAWSEGMENT* segm = ( m_importAsfootprintGraphicItems ) ?
static_cast< DRAWSEGMENT* >( new EDGE_MODULE( NULL ) ) :
new DRAWSEGMENT;
segm->SetLayer( ToLAYER_ID( m_brdLayer ) );
segm->SetStart( startpoint );
segm->SetEnd( endpoint );
segm->SetWidth( aWidth );
m_newItemsList.push_back( segm );
startpoint = endpoint;
}
}
#else // Use bezier curves, supported by pcbnew, to approximate the spline
tinyspline::BSpline dxfspline( m_curr_entity.m_SplineControlPointList.size(),
/* coord dim */ 2, m_curr_entity.m_SplineDegree );
std::vector<double> ctrlp;
for( unsigned ii = 0; ii < imax; ++ii )
{
ctrlp.push_back( m_curr_entity.m_SplineControlPointList[ii].m_x );
ctrlp.push_back( m_curr_entity.m_SplineControlPointList[ii].m_y );
}
dxfspline.setCtrlp( ctrlp );
dxfspline.setKnots( m_curr_entity.m_SplineKnotsList );
tinyspline::BSpline beziers( dxfspline.toBeziers() );
std::vector<double> coords = beziers.ctrlp();
// Each Bezier curve uses 4 vertices (a start point, 2 control points and a end point).
// So we can have more than one Bezier curve ( there are one curve each four vertices)
for( unsigned ii = 0; ii < coords.size(); ii += 8 )
{
DRAWSEGMENT* segm = ( m_importAsfootprintGraphicItems ) ?
static_cast< DRAWSEGMENT* >( new EDGE_MODULE( NULL ) ) :
new DRAWSEGMENT;
segm->SetLayer( ToLAYER_ID( m_brdLayer ) );
segm->SetShape( S_CURVE );
segm->SetStart( wxPoint( mapX( coords[ii] ), mapY( coords[ii+1] ) ) );
segm->SetBezControl1( wxPoint( mapX( coords[ii+2] ), mapY( coords[ii+3] ) ) );
segm->SetBezControl2( wxPoint( mapX( coords[ii+4] ), mapY( coords[ii+5] ) ) );
segm->SetEnd( wxPoint( mapX( coords[ii+6] ), mapY( coords[ii+7] ) ) );
segm->SetWidth( aWidth );
segm->RebuildBezierToSegmentsPointsList( aWidth );
m_newItemsList.push_back( segm );
}
#endif
}
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