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kicad/pcbnew/exporters/step/step_pcb_model.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2022 Mark Roszko <mark.roszko@gmail.com>
* Copyright (C) 2016 Cirilo Bernardo <cirilo.bernardo@gmail.com>
* Copyright (C) 2016-2024 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
*/
#include <algorithm>
#include <cmath>
#include <sstream>
#include <string>
#include <utility>
#include <wx/filename.h>
#include <wx/filefn.h>
#include <wx/stdpaths.h>
#include <wx/wfstream.h>
#include <wx/zipstrm.h>
#include <wx/stdstream.h>
#include <decompress.hpp>
#include <footprint.h>
#include <pad.h>
#include <pcb_track.h>
#include <kiplatform/io.h>
#include <string_utils.h>
#include <build_version.h>
#include <geometry/shape_segment.h>
#include <geometry/shape_circle.h>
#include <board_stackup_manager/board_stackup.h>
#include <board_stackup_manager/stackup_predefined_prms.h>
#include "step_pcb_model.h"
#include "streamwrapper.h"
#include <IGESCAFControl_Reader.hxx>
#include <IGESCAFControl_Writer.hxx>
#include <IGESControl_Controller.hxx>
#include <IGESData_GlobalSection.hxx>
#include <IGESData_IGESModel.hxx>
#include <Interface_Static.hxx>
#include <Quantity_Color.hxx>
#include <STEPCAFControl_Reader.hxx>
#include <STEPCAFControl_Writer.hxx>
#include <APIHeaderSection_MakeHeader.hxx>
#include <Standard_Failure.hxx>
#include <Standard_Handle.hxx>
#include <Standard_Version.hxx>
#include <TCollection_ExtendedString.hxx>
#include <TDocStd_Document.hxx>
#include <TDocStd_XLinkTool.hxx>
#include <TDataStd_Name.hxx>
#include <TDataStd_TreeNode.hxx>
#include <TDF_LabelSequence.hxx>
#include <TDF_Tool.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <XCAFApp_Application.hxx>
#include <XCAFDoc.hxx>
#include <XCAFDoc_DocumentTool.hxx>
#include <XCAFDoc_ColorTool.hxx>
#include <XCAFDoc_ShapeTool.hxx>
#include <XCAFDoc_Area.hxx>
#include <XCAFDoc_Centroid.hxx>
#include <XCAFDoc_Location.hxx>
#include <XCAFDoc_Volume.hxx>
#include "KI_XCAFDoc_AssemblyGraph.hxx"
#include <BRep_Tool.hxx>
#include <BRepMesh_IncrementalMesh.hxx>
#include <BRepBuilderAPI.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#include <BRepBuilderAPI_GTransform.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <BRepBuilderAPI_MakeFace.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
#include <BRepExtrema_DistShapeShape.hxx>
#include <BRepPrimAPI_MakePrism.hxx>
#include <BRepPrimAPI_MakeCylinder.hxx>
#include <BRepTools.hxx>
#include <BRepLib_MakeWire.hxx>
#include <BRepAdaptor_Surface.hxx>
#include <BRepAlgoAPI_Check.hxx>
#include <BRepAlgoAPI_Cut.hxx>
#include <BRepAlgoAPI_Fuse.hxx>
#include <ShapeUpgrade_UnifySameDomain.hxx>
#include <BRepBndLib.hxx>
#include <Bnd_BoundSortBox.hxx>
#include <Geom_Curve.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <gp_Ax2.hxx>
#include <gp_Dir.hxx>
#include <gp_Pnt.hxx>
#include <GC_MakeArcOfCircle.hxx>
#include <GC_MakeCircle.hxx>
#include <RWGltf_CafWriter.hxx>
#if OCC_VERSION_HEX >= 0x070700
#include <VrmlAPI_CafReader.hxx>
#endif
#include <macros.h>
static constexpr double USER_PREC = 1e-4;
static constexpr double USER_ANGLE_PREC = 1e-6;
// nominal offset from the board
static constexpr double BOARD_OFFSET = 0.05;
// supported file types for 3D models
enum MODEL3D_FORMAT_TYPE
{
FMT_NONE,
FMT_STEP,
FMT_STEPZ,
FMT_IGES,
FMT_EMN,
FMT_IDF,
FMT_WRL,
FMT_WRZ
};
MODEL3D_FORMAT_TYPE fileType( const char* aFileName )
{
wxFileName lfile( wxString::FromUTF8Unchecked( aFileName ) );
if( !lfile.FileExists() )
{
wxString msg;
msg.Printf( wxT( " * fileType(): no such file: %s\n" ),
wxString::FromUTF8Unchecked( aFileName ) );
ReportMessage( msg );
return FMT_NONE;
}
wxString ext = lfile.GetExt().Lower();
if( ext == wxT( "wrl" ) )
return FMT_WRL;
if( ext == wxT( "wrz" ) )
return FMT_WRZ;
if( ext == wxT( "idf" ) )
return FMT_IDF; // component outline
if( ext == wxT( "emn" ) )
return FMT_EMN; // PCB assembly
if( ext == wxT( "stpz" ) || ext == wxT( "gz" ) )
return FMT_STEPZ;
OPEN_ISTREAM( ifile, aFileName );
if( ifile.fail() )
return FMT_NONE;
char iline[82];
memset( iline, 0, 82 );
ifile.getline( iline, 82 );
CLOSE_STREAM( ifile );
iline[81] = 0; // ensure NULL termination when string is too long
// check for STEP in Part 21 format
// (this can give false positives since Part 21 is not exclusively STEP)
if( !strncmp( iline, "ISO-10303-21;", 13 ) )
return FMT_STEP;
std::string fstr = iline;
// check for STEP in XML format
// (this can give both false positive and false negatives)
if( fstr.find( "urn:oid:1.0.10303." ) != std::string::npos )
return FMT_STEP;
// Note: this is a very simple test which can yield false positives; the only
// sure method for determining if a file *not* an IGES model is to attempt
// to load it.
if( iline[72] == 'S' && ( iline[80] == 0 || iline[80] == 13 || iline[80] == 10 ) )
return FMT_IGES;
return FMT_NONE;
}
static VECTOR2D CircleCenterFrom3Points( const VECTOR2D& p1, const VECTOR2D& p2,
const VECTOR2D& p3 )
{
VECTOR2D center;
// Move coordinate origin to p2, to simplify calculations
VECTOR2D b = p1 - p2;
VECTOR2D d = p3 - p2;
double bc = ( b.x * b.x + b.y * b.y ) / 2.0;
double cd = ( -d.x * d.x - d.y * d.y ) / 2.0;
double det = -b.x * d.y + d.x * b.y;
// We're fine with divisions by 0
det = 1.0 / det;
center.x = ( -bc * d.y - cd * b.y ) * det;
center.y = ( b.x * cd + d.x * bc ) * det;
center += p2;
return center;
}
#define APPROX_DBG( stmt )
//#define APPROX_DBG( stmt ) stmt
static SHAPE_LINE_CHAIN approximateLineChainWithArcs( const SHAPE_LINE_CHAIN& aSrc )
{
// An algo that takes 3 points, calculates a circle center,
// then tries to find as many points fitting the circle.
static const double c_radiusDeviation = 1000.0;
static const double c_arcCenterDeviation = 1000.0;
static const double c_relLengthDeviation = 0.8;
static const int c_last_none = -1000; // Meaning the arc cannot be constructed
// Allow larger angles for segments below this size
static const double c_smallSize = pcbIUScale.mmToIU( 0.1 );
static const double c_circleCloseGap = pcbIUScale.mmToIU( 1.0 );
APPROX_DBG( std::cout << std::endl );
if( aSrc.PointCount() < 4 )
return aSrc;
if( !aSrc.IsClosed() )
return aSrc; // non-closed polygons are not supported
SHAPE_LINE_CHAIN dst;
int jEndIdx = aSrc.PointCount() - 3;
for( int i = 0; i < aSrc.PointCount(); i++ )
{
int first = i - 3;
int last = c_last_none;
VECTOR2D p0 = aSrc.CPoint( i - 3 );
VECTOR2D p1 = aSrc.CPoint( i - 2 );
VECTOR2D p2 = aSrc.CPoint( i - 1 );
APPROX_DBG( std::cout << i << " " << aSrc.CPoint( i ) << " " << ( i - 3 ) << " "
<< VECTOR2I( p0 ) << " " << ( i - 2 ) << " " << VECTOR2I( p1 ) << " "
<< ( i - 1 ) << " " << VECTOR2I( p2 ) << std::endl );
VECTOR2D v01 = p1 - p0;
VECTOR2D v12 = p2 - p1;
bool defective = false;
double d01 = v01.EuclideanNorm();
double d12 = v12.EuclideanNorm();
// Check distance differences between 3 first points
defective |= std::abs( d01 - d12 ) > ( std::max( d01, d12 ) * c_relLengthDeviation );
if( !defective )
{
// Check angles between 3 first points
EDA_ANGLE a01( v01 );
EDA_ANGLE a12( v12 );
double a_diff = ( a01 - a12 ).Normalize180().AsDegrees();
defective |= std::abs( a_diff ) < 0.1;
// Larger angles are allowed for smaller geometry
double maxAngleDiff = std::max( d01, d12 ) < c_smallSize ? 46.0 : 30.0;
defective |= std::abs( a_diff ) >= maxAngleDiff;
}
if( !defective )
{
// Find last point lying on the circle created from 3 first points
VECTOR2D center = CircleCenterFrom3Points( p0, p1, p2 );
double radius = ( p0 - center ).EuclideanNorm();
VECTOR2D p_prev = p2;
EDA_ANGLE a_prev( v12 );
for( int j = i; j <= jEndIdx; j++ )
{
VECTOR2D p_test = aSrc.CPoint( j );
EDA_ANGLE a_test( p_test - p_prev );
double rad_test = ( p_test - center ).EuclideanNorm();
double d_tl = ( p_test - p_prev ).EuclideanNorm();
double rad_dev = std::abs( radius - rad_test );
APPROX_DBG( std::cout << " " << j << " " << aSrc.CPoint( j ) << " rad "
<< int64_t( rad_test ) << " ref " << int64_t( radius )
<< std::endl );
if( rad_dev > c_radiusDeviation )
{
APPROX_DBG( std::cout << " " << j
<< " Radius deviation too large: " << int64_t( rad_dev )
<< " > " << c_radiusDeviation << std::endl );
break;
}
// Larger angles are allowed for smaller geometry
double maxAngleDiff =
std::max( std::max( d01, d12 ), d_tl ) < c_smallSize ? 46.0 : 30.0;
double a_diff_test = ( a_prev - a_test ).Normalize180().AsDegrees();
if( std::abs( a_diff_test ) >= maxAngleDiff )
{
APPROX_DBG( std::cout << " " << j << " Angles differ too much " << a_diff_test
<< std::endl );
break;
}
if( std::abs( d_tl - d01 ) > ( std::max( d_tl, d01 ) * c_relLengthDeviation ) )
{
APPROX_DBG( std::cout << " " << j << " Lengths differ too much " << d_tl
<< "; " << d01 << std::endl );
break;
}
last = j;
p_prev = p_test;
a_prev = a_test;
}
}
if( last != c_last_none )
{
// Try to add an arc, testing for self-interference
SHAPE_ARC arc( aSrc.CPoint( first ), aSrc.CPoint( ( first + last ) / 2 ),
aSrc.CPoint( last ), 0 );
if( last > aSrc.PointCount() - 3 && !dst.IsArcSegment( 0 ) )
{
// If we've found an arc at the end, but already added segments at the start, remove them.
int toRemove = last - ( aSrc.PointCount() - 3 );
while( toRemove )
{
dst.RemoveShape( 0 );
toRemove--;
}
}
SHAPE_LINE_CHAIN testChain = dst;
testChain.Append( arc );
testChain.Append( aSrc.Slice( last, std::max( last, aSrc.PointCount() - 3 ) ) );
testChain.SetClosed( aSrc.IsClosed() );
if( !testChain.SelfIntersectingWithArcs() )
{
// Add arc
dst.Append( arc );
APPROX_DBG( std::cout << " Add arc start " << arc.GetP0() << " mid "
<< arc.GetArcMid() << " end " << arc.GetP1() << std::endl );
i = last + 3;
}
else
{
// Self-interference
last = c_last_none;
APPROX_DBG( std::cout << " Self-intersection check failed" << std::endl );
}
}
if( last == c_last_none )
{
if( first < 0 )
jEndIdx = first + aSrc.PointCount();
// Add point
dst.Append( p0 );
APPROX_DBG( std::cout << " Add pt " << VECTOR2I( p0 ) << std::endl );
}
}
dst.SetClosed( true );
// Try to merge arcs
int iarc0 = dst.ArcIndex( 0 );
int iarc1 = dst.ArcIndex( dst.GetSegmentCount() - 1 );
if( iarc0 != -1 && iarc1 != -1 )
{
APPROX_DBG( std::cout << "Final arcs " << iarc0 << " " << iarc1 << std::endl );
if( iarc0 == iarc1 )
{
SHAPE_ARC arc = dst.Arc( iarc0 );
VECTOR2D p0 = arc.GetP0();
VECTOR2D p1 = arc.GetP1();
// If we have only one arc and the gap is small, make it a circle
if( ( p1 - p0 ).EuclideanNorm() < c_circleCloseGap )
{
dst.Clear();
dst.Append( SHAPE_ARC( arc.GetCenter(), arc.GetP0(), ANGLE_360 ) );
}
}
else
{
// Merge first and last arcs if they are similar
SHAPE_ARC arc0 = dst.Arc( iarc0 );
SHAPE_ARC arc1 = dst.Arc( iarc1 );
VECTOR2D ac0 = arc0.GetCenter();
VECTOR2D ac1 = arc1.GetCenter();
double ar0 = arc0.GetRadius();
double ar1 = arc1.GetRadius();
if( std::abs( ar0 - ar1 ) <= c_radiusDeviation
&& ( ac0 - ac1 ).EuclideanNorm() <= c_arcCenterDeviation )
{
dst.RemoveShape( 0 );
dst.RemoveShape( -1 );
SHAPE_ARC merged( arc1.GetP0(), arc1.GetArcMid(), arc0.GetP1(), 0 );
dst.Append( merged );
}
}
}
return dst;
}
static TopoDS_Shape getOneShape( Handle( XCAFDoc_ShapeTool ) aShapeTool )
{
TDF_LabelSequence theLabels;
aShapeTool->GetFreeShapes( theLabels );
TopoDS_Shape aShape;
if( theLabels.Length() == 1 )
return aShapeTool->GetShape( theLabels.Value( 1 ) );
TopoDS_Compound aCompound;
BRep_Builder aBuilder;
aBuilder.MakeCompound( aCompound );
for( TDF_LabelSequence::Iterator anIt( theLabels ); anIt.More(); anIt.Next() )
{
TopoDS_Shape aFreeShape;
if( !aShapeTool->GetShape( anIt.Value(), aFreeShape ) )
continue;
aBuilder.Add( aCompound, aFreeShape );
}
if( aCompound.NbChildren() > 0 )
aShape = aCompound;
return aShape;
}
// Apply scaling to shapes within theLabel.
// Based on XCAFDoc_Editor::RescaleGeometry
static Standard_Boolean rescaleShapes( const TDF_Label& theLabel, const gp_XYZ& aScale )
{
if( theLabel.IsNull() )
{
Message::SendFail( "Null label." );
return Standard_False;
}
if( Abs( aScale.X() ) <= gp::Resolution() || Abs( aScale.Y() ) <= gp::Resolution()
|| Abs( aScale.Z() ) <= gp::Resolution() )
{
Message::SendFail( "Scale factor is too small." );
return Standard_False;
}
Handle( XCAFDoc_ShapeTool ) aShapeTool = XCAFDoc_DocumentTool::ShapeTool( theLabel );
if( aShapeTool.IsNull() )
{
Message::SendFail( "Couldn't find XCAFDoc_ShapeTool attribute." );
return Standard_False;
}
Handle( KI_XCAFDoc_AssemblyGraph ) aG = new KI_XCAFDoc_AssemblyGraph( theLabel );
if( aG.IsNull() )
{
Message::SendFail( "Couldn't create assembly graph." );
return Standard_False;
}
Standard_Boolean anIsDone = Standard_True;
// clang-format off
gp_GTrsf aGTrsf;
aGTrsf.SetVectorialPart( gp_Mat( aScale.X(), 0, 0,
0, aScale.Y(), 0,
0, 0, aScale.Z() ) );
// clang-format on
BRepBuilderAPI_GTransform aBRepTrsf( aGTrsf );
for( Standard_Integer idx = 1; idx <= aG->NbNodes(); idx++ )
{
const KI_XCAFDoc_AssemblyGraph::NodeType aNodeType = aG->GetNodeType( idx );
if( ( aNodeType != KI_XCAFDoc_AssemblyGraph::NodeType_Part )
&& ( aNodeType != KI_XCAFDoc_AssemblyGraph::NodeType_Occurrence ) )
{
continue;
}
const TDF_Label& aLabel = aG->GetNode( idx );
if( aNodeType == KI_XCAFDoc_AssemblyGraph::NodeType_Part )
{
const TopoDS_Shape aShape = aShapeTool->GetShape( aLabel );
aBRepTrsf.Perform( aShape, Standard_True );
if( !aBRepTrsf.IsDone() )
{
Standard_SStream aSS;
TCollection_AsciiString anEntry;
TDF_Tool::Entry( aLabel, anEntry );
aSS << "Shape " << anEntry << " is not scaled!";
Message::SendFail( aSS.str().c_str() );
anIsDone = Standard_False;
return Standard_False;
}
TopoDS_Shape aScaledShape = aBRepTrsf.Shape();
aShapeTool->SetShape( aLabel, aScaledShape );
// Update sub-shapes
TDF_LabelSequence aSubshapes;
aShapeTool->GetSubShapes( aLabel, aSubshapes );
for( TDF_LabelSequence::Iterator anItSs( aSubshapes ); anItSs.More(); anItSs.Next() )
{
const TDF_Label& aLSs = anItSs.Value();
const TopoDS_Shape aSs = aShapeTool->GetShape( aLSs );
const TopoDS_Shape aSs1 = aBRepTrsf.ModifiedShape( aSs );
aShapeTool->SetShape( aLSs, aSs1 );
}
// These attributes will be recomputed eventually, but clear them just in case
aLabel.ForgetAttribute( XCAFDoc_Area::GetID() );
aLabel.ForgetAttribute( XCAFDoc_Centroid::GetID() );
aLabel.ForgetAttribute( XCAFDoc_Volume::GetID() );
}
else if( aNodeType == KI_XCAFDoc_AssemblyGraph::NodeType_Occurrence )
{
TopLoc_Location aLoc = aShapeTool->GetLocation( aLabel );
gp_Trsf aTrsf = aLoc.Transformation();
aTrsf.SetTranslationPart( aTrsf.TranslationPart().Multiplied( aScale ) );
XCAFDoc_Location::Set( aLabel, aTrsf );
}
}
if( !anIsDone )
{
return Standard_False;
}
aShapeTool->UpdateAssemblies();
return anIsDone;
}
// Sets names in assembly to <aPrefix> (<old name>), or to <aPrefix>
static Standard_Boolean prefixNames( const TDF_Label& aLabel,
const TCollection_ExtendedString& aPrefix )
{
Handle( KI_XCAFDoc_AssemblyGraph ) aG = new KI_XCAFDoc_AssemblyGraph( aLabel );
if( aG.IsNull() )
{
Message::SendFail( "Couldn't create assembly graph." );
return Standard_False;
}
Standard_Boolean anIsDone = Standard_True;
for( Standard_Integer idx = 1; idx <= aG->NbNodes(); idx++ )
{
const TDF_Label& lbl = aG->GetNode( idx );
Handle( TDataStd_Name ) nameHandle;
if( lbl.FindAttribute( TDataStd_Name::GetID(), nameHandle ) )
{
TCollection_ExtendedString name;
name += aPrefix;
name += " (";
name += nameHandle->Get();
name += ")";
TDataStd_Name::Set( lbl, name );
}
else
{
TDataStd_Name::Set( lbl, aPrefix );
}
}
return anIsDone;
}
STEP_PCB_MODEL::STEP_PCB_MODEL( const wxString& aPcbName )
{
m_app = XCAFApp_Application::GetApplication();
m_app->NewDocument( "MDTV-XCAF", m_doc );
m_assy = XCAFDoc_DocumentTool::ShapeTool( m_doc->Main() );
m_assy_label = m_assy->NewShape();
m_hasPCB = false;
m_components = 0;
m_precision = USER_PREC;
m_angleprec = USER_ANGLE_PREC;
m_mergeOCCMaxDist = OCC_MAX_DISTANCE_TO_MERGE_POINTS;
m_minx = 1.0e10; // absurdly large number; any valid PCB X value will be smaller
m_pcbName = aPcbName;
m_maxError = pcbIUScale.mmToIU( ARC_TO_SEGMENT_MAX_ERROR_MM );
m_fuseShapes = false;
// TODO: make configurable
m_platingThickness = pcbIUScale.mmToIU( 0.025 );
}
STEP_PCB_MODEL::~STEP_PCB_MODEL()
{
if( m_doc->CanClose() == CDM_CCS_OK )
m_doc->Close();
}
bool STEP_PCB_MODEL::AddPadShape( const PAD* aPad, const VECTOR2D& aOrigin, bool aVia )
{
bool success = true;
for( PCB_LAYER_ID pcb_layer : aPad->GetLayerSet().Seq() )
{
if( !IsCopperLayer( pcb_layer ) )
continue;
if( !m_enabledLayers.Contains( pcb_layer ) )
continue;
TopoDS_Shape curr_shape;
double Zpos, thickness;
getLayerZPlacement( pcb_layer, Zpos, thickness );
if( !aVia )
{
// Pad surface as a separate face for FEM simulations.
if( pcb_layer == F_Cu )
thickness += 0.01;
else if( pcb_layer == B_Cu )
thickness -= 0.01;
}
TopoDS_Shape testShape;
// Make a shape on copper layers
std::shared_ptr<SHAPE> effShapePtr = aPad->GetEffectiveShape( pcb_layer );
wxCHECK( effShapePtr->Type() == SHAPE_TYPE::SH_COMPOUND, false );
SHAPE_COMPOUND* compoundShape = static_cast<SHAPE_COMPOUND*>( effShapePtr.get() );
std::vector<TopoDS_Shape> topodsShapes;
for( SHAPE* shape : compoundShape->Shapes() )
{
if( shape->Type() == SHAPE_TYPE::SH_SEGMENT || shape->Type() == SHAPE_TYPE::SH_CIRCLE )
{
VECTOR2I start, end;
int width = 0;
if( shape->Type() == SHAPE_TYPE::SH_SEGMENT )
{
SHAPE_SEGMENT* sh_seg = static_cast<SHAPE_SEGMENT*>( shape );
start = sh_seg->GetSeg().A;
end = sh_seg->GetSeg().B;
width = sh_seg->GetWidth();
}
else if( shape->Type() == SHAPE_TYPE::SH_CIRCLE )
{
SHAPE_CIRCLE* sh_circ = static_cast<SHAPE_CIRCLE*>( shape );
start = end = sh_circ->GetCenter();
width = sh_circ->GetRadius() * 2;
}
TopoDS_Shape topods_shape;
if( MakeShapeAsThickSegment( topods_shape, start, end, width, thickness, Zpos,
aOrigin ) )
{
topodsShapes.emplace_back( topods_shape );
if( testShape.IsNull() )
{
MakeShapeAsThickSegment( testShape, start, end, width, 0.0,
Zpos + thickness, aOrigin );
}
}
else
{
success = false;
}
}
else
{
SHAPE_POLY_SET polySet;
shape->TransformToPolygon( polySet, ARC_HIGH_DEF, ERROR_INSIDE );
success &= MakeShapes( topodsShapes, polySet, false, thickness, Zpos, aOrigin );
if( testShape.IsNull() )
{
std::vector<TopoDS_Shape> testShapes;
MakeShapes( testShapes, polySet, false, 0.0, Zpos + thickness, aOrigin );
if( testShapes.size() > 0 )
testShape = testShapes.front();
}
}
}
// Fuse shapes
if( topodsShapes.size() == 1 )
{
m_board_copper_pads.emplace_back( topodsShapes.front() );
}
else
{
BRepAlgoAPI_Fuse mkFuse;
TopTools_ListOfShape shapeArguments, shapeTools;
for( TopoDS_Shape& sh : topodsShapes )
{
if( sh.IsNull() )
continue;
if( shapeArguments.IsEmpty() )
shapeArguments.Append( sh );
else
shapeTools.Append( sh );
}
mkFuse.SetRunParallel( true );
mkFuse.SetToFillHistory( false );
mkFuse.SetArguments( shapeArguments );
mkFuse.SetTools( shapeTools );
mkFuse.Build();
if( mkFuse.IsDone() )
{
TopoDS_Shape fusedShape = mkFuse.Shape();
ShapeUpgrade_UnifySameDomain unify( fusedShape, true, true, false );
unify.History() = nullptr;
unify.Build();
TopoDS_Shape unifiedShapes = unify.Shape();
if( !unifiedShapes.IsNull() )
{
m_board_copper_pads.emplace_back( unifiedShapes );
}
else
{
ReportMessage(
_( "** ShapeUpgrade_UnifySameDomain produced a null shape **\n" ) );
m_board_copper_pads.emplace_back( fusedShape );
}
}
else
{
for( TopoDS_Shape& sh : topodsShapes )
m_board_copper_pads.emplace_back( sh );
}
}
if( !aVia && !testShape.IsNull() )
{
if( pcb_layer == F_Cu || pcb_layer == B_Cu )
{
wxString name;
name << "Pad_";
if( pcb_layer == F_Cu )
name << 'F' << '_';
else if( pcb_layer == B_Cu )
name << 'B' << '_';
name << aPad->GetParentFootprint()->GetReferenceAsString() << '_'
<< aPad->GetNumber() << '_' << aPad->GetShortNetname();
gp_Pnt point( pcbIUScale.IUTomm( aPad->GetX() - aOrigin.x ),
-pcbIUScale.IUTomm( aPad->GetY() - aOrigin.y ), Zpos + thickness );
m_pad_points[name] = { point, testShape };
}
}
}
if( aPad->GetAttribute() == PAD_ATTRIB::PTH && aPad->IsOnLayer( F_Cu )
&& aPad->IsOnLayer( B_Cu ) )
{
double f_pos, f_thickness;
double b_pos, b_thickness;
getLayerZPlacement( F_Cu, f_pos, f_thickness );
getLayerZPlacement( B_Cu, b_pos, b_thickness );
double top = std::max( f_pos, f_pos + f_thickness );
double bottom = std::min( b_pos, b_pos + b_thickness );
TopoDS_Shape plating;
std::shared_ptr<SHAPE_SEGMENT> seg_hole = aPad->GetEffectiveHoleShape();
double width = std::min( aPad->GetDrillSize().x, aPad->GetDrillSize().y );
if( MakeShapeAsThickSegment( plating, seg_hole->GetSeg().A, seg_hole->GetSeg().B, width,
( top - bottom ), bottom, aOrigin ) )
{
m_board_copper_pads.push_back( plating );
}
else
{
success = false;
}
}
if( !success ) // Error
ReportMessage( wxT( "OCC error adding pad/via polygon.\n" ) );
return success;
}
bool STEP_PCB_MODEL::AddViaShape( const PCB_VIA* aVia, const VECTOR2D& aOrigin )
{
// A via is very similar to a round pad. So, for now, used AddPadHole() to
// create a via+hole shape
PAD dummy( nullptr );
int hole = aVia->GetDrillValue();
dummy.SetDrillSize( VECTOR2I( hole, hole ) );
dummy.SetPosition( aVia->GetStart() );
dummy.SetSize( VECTOR2I( aVia->GetWidth(), aVia->GetWidth() ) );
if( AddPadHole( &dummy, aOrigin ) )
{
if( !AddPadShape( &dummy, aOrigin, true ) )
return false;
}
return true;
}
bool STEP_PCB_MODEL::AddTrackSegment( const PCB_TRACK* aTrack, const VECTOR2D& aOrigin )
{
PCB_LAYER_ID pcblayer = aTrack->GetLayer();
if( !m_enabledLayers.Contains( pcblayer ) )
return true;
TopoDS_Shape shape;
double zposition, thickness;
getLayerZPlacement( pcblayer, zposition, thickness );
bool success = MakeShapeAsThickSegment( shape, aTrack->GetStart(), aTrack->GetEnd(),
aTrack->GetWidth(), thickness, zposition, aOrigin );
if( success )
m_board_copper_tracks.push_back( shape );
return success;
}
void STEP_PCB_MODEL::getLayerZPlacement( const PCB_LAYER_ID aLayer, double& aZPos,
double& aThickness )
{
// Offsets above copper in mm
static const double c_silkscreenAboveCopper = 0.04;
static const double c_soldermaskAboveCopper = 0.015;
if( IsCopperLayer( aLayer ) )
{
getCopperLayerZPlacement( aLayer, aZPos, aThickness );
}
else if( IsFrontLayer( aLayer ) )
{
double f_pos, f_thickness;
getCopperLayerZPlacement( F_Cu, f_pos, f_thickness );
double top = std::max( f_pos, f_pos + f_thickness );
if( aLayer == F_SilkS )
aZPos = top + c_silkscreenAboveCopper;
else
aZPos = top + c_soldermaskAboveCopper;
aThickness = 0.0; // Normal points up
}
else if( IsBackLayer( aLayer ) )
{
double b_pos, b_thickness;
getCopperLayerZPlacement( B_Cu, b_pos, b_thickness );
double bottom = std::min( b_pos, b_pos + b_thickness );
if( aLayer == B_SilkS )
aZPos = bottom - c_silkscreenAboveCopper;
else
aZPos = bottom - c_soldermaskAboveCopper;
aThickness = -0.0; // Normal points down
}
}
void STEP_PCB_MODEL::getCopperLayerZPlacement( const PCB_LAYER_ID aLayer, double& aZPos,
double& aThickness )
{
int z = 0;
int thickness = 0;
bool wasPrepreg = false;
const std::vector<BOARD_STACKUP_ITEM*>& materials = m_stackup.GetList();
// Iterate from bottom to top
for( auto it = materials.rbegin(); it != materials.rend(); ++it )
{
const BOARD_STACKUP_ITEM* item = *it;
if( item->GetType() == BS_ITEM_TYPE_COPPER )
{
if( aLayer == B_Cu )
{
// This is the first encountered layer
thickness = -item->GetThickness();
break;
}
// Inner copper position is usually inside prepreg
if( wasPrepreg && item->GetBrdLayerId() != F_Cu )
thickness = -item->GetThickness();
else
thickness = item->GetThickness();
if( item->GetBrdLayerId() == aLayer )
break;
if( item->GetBrdLayerId() != B_Cu )
z += item->GetThickness();
}
else if( item->GetType() == BS_ITEM_TYPE_DIELECTRIC )
{
wasPrepreg = ( item->GetTypeName() == KEY_PREPREG );
// Dielectric can have sub-layers. Layer 0 is the main layer
// Not frequent, but possible
thickness = 0;
for( int idx = 0; idx < item->GetSublayersCount(); idx++ )
thickness += item->GetThickness( idx );
z += thickness;
}
}
aZPos = pcbIUScale.IUTomm( z );
aThickness = pcbIUScale.IUTomm( thickness );
}
void STEP_PCB_MODEL::getBoardBodyZPlacement( double& aZPos, double& aThickness )
{
double f_pos, f_thickness;
double b_pos, b_thickness;
getLayerZPlacement( F_Cu, f_pos, f_thickness );
getLayerZPlacement( B_Cu, b_pos, b_thickness );
double top = std::min( f_pos, f_pos + f_thickness );
double bottom = std::max( b_pos, b_pos + b_thickness );
aThickness = ( top - bottom );
aZPos = bottom;
wxASSERT( aZPos == 0.0 );
}
bool STEP_PCB_MODEL::AddCopperPolygonShapes( const SHAPE_POLY_SET* aPolyShapes, PCB_LAYER_ID aLayer,
const VECTOR2D& aOrigin, bool aTrack )
{
bool success = true;
if( aPolyShapes->IsEmpty() )
return true;
if( !m_enabledLayers.Contains( aLayer ) )
return true;
double z_pos, thickness;
getLayerZPlacement( aLayer, z_pos, thickness );
if( !MakeShapes( aTrack ? m_board_copper_tracks : m_board_copper_zones, *aPolyShapes, true,
thickness, z_pos, aOrigin ) )
{
ReportMessage(
wxString::Format( wxT( "Could not add shape (%d points) to copper layer on %s.\n" ),
aPolyShapes->FullPointCount(), LayerName( aLayer ) ) );
success = false;
}
return success;
}
bool STEP_PCB_MODEL::AddPadHole( const PAD* aPad, const VECTOR2D& aOrigin )
{
if( aPad == nullptr || !aPad->GetDrillSize().x )
return false;
const double margin = 0.01; // a small margin on the Z axix to be sure the hole
// is bigger than the board with copper
// must be > OCC_MAX_DISTANCE_TO_MERGE_POINTS
double f_pos, f_thickness;
double b_pos, b_thickness;
getLayerZPlacement( F_Cu, f_pos, f_thickness );
getLayerZPlacement( B_Cu, b_pos, b_thickness );
double top = std::max( f_pos, f_pos + f_thickness );
double bottom = std::min( b_pos, b_pos + b_thickness );
double holeZsize = ( top - bottom ) + ( margin * 2 );
std::shared_ptr<SHAPE_SEGMENT> seg_hole = aPad->GetEffectiveHoleShape();
double boardDrill = std::min( aPad->GetDrillSize().x, aPad->GetDrillSize().y );
int platingThickness = aPad->GetAttribute() == PAD_ATTRIB::PTH ? m_platingThickness : 0;
double copperDrill = boardDrill - platingThickness * 2;
TopoDS_Shape copperHole, boardHole;
if( MakeShapeAsThickSegment( copperHole, seg_hole->GetSeg().A, seg_hole->GetSeg().B,
copperDrill, holeZsize, bottom - margin, aOrigin ) )
{
m_copperCutouts.push_back( copperHole );
}
else
{
return false;
}
if( MakeShapeAsThickSegment( boardHole, seg_hole->GetSeg().A, seg_hole->GetSeg().B, boardDrill,
holeZsize, bottom - margin, aOrigin ) )
{
m_boardCutouts.push_back( boardHole );
}
else
{
return false;
}
return true;
}
bool STEP_PCB_MODEL::AddComponent( const std::string& aFileNameUTF8, const std::string& aRefDes,
bool aBottom, VECTOR2D aPosition, double aRotation, VECTOR3D aOffset,
VECTOR3D aOrientation, VECTOR3D aScale, bool aSubstituteModels )
{
if( aFileNameUTF8.empty() )
{
ReportMessage( wxString::Format( wxT( "No model defined for component %s.\n" ), aRefDes ) );
return false;
}
wxString fileName( wxString::FromUTF8( aFileNameUTF8.c_str() ) );
ReportMessage( wxString::Format( wxT( "Add component %s.\n" ), aRefDes ) );
// first retrieve a label
TDF_Label lmodel;
wxString errorMessage;
if( !getModelLabel( aFileNameUTF8, aScale, lmodel, aSubstituteModels, &errorMessage ) )
{
if( errorMessage.IsEmpty() )
ReportMessage( wxString::Format( wxT( "No model for filename '%s'.\n" ), fileName ) );
else
ReportMessage( errorMessage );
return false;
}
// calculate the Location transform
TopLoc_Location toploc;
if( !getModelLocation( aBottom, aPosition, aRotation, aOffset, aOrientation, toploc ) )
{
ReportMessage(
wxString::Format( wxT( "No location data for filename '%s'.\n" ), fileName ) );
return false;
}
// add the located sub-assembly
TDF_Label llabel = m_assy->AddComponent( m_assy_label, lmodel, toploc );
if( llabel.IsNull() )
{
ReportMessage( wxString::Format( wxT( "Could not add component with filename '%s'.\n" ),
fileName ) );
return false;
}
// attach the RefDes name
TCollection_ExtendedString refdes( aRefDes.c_str() );
TDataStd_Name::Set( llabel, refdes );
return true;
}
void STEP_PCB_MODEL::SetEnabledLayers( const LSET& aLayers )
{
m_enabledLayers = aLayers;
}
void STEP_PCB_MODEL::SetFuseShapes( bool aValue )
{
m_fuseShapes = aValue;
}
void STEP_PCB_MODEL::SetStackup( const BOARD_STACKUP& aStackup )
{
m_stackup = aStackup;
}
void STEP_PCB_MODEL::SetNetFilter( const wxString& aFilter )
{
m_netFilter = aFilter;
}
void STEP_PCB_MODEL::SetBoardColor( double r, double g, double b )
{
m_boardColor[0] = r;
m_boardColor[1] = g;
m_boardColor[2] = b;
}
void STEP_PCB_MODEL::SetCopperColor( double r, double g, double b )
{
m_copperColor[0] = r;
m_copperColor[1] = g;
m_copperColor[2] = b;
}
void STEP_PCB_MODEL::OCCSetMergeMaxDistance( double aDistance )
{
// Ensure a minimal value (in mm)
m_mergeOCCMaxDist = aDistance;
}
bool STEP_PCB_MODEL::isBoardOutlineValid()
{
return m_pcb_labels.size() > 0;
}
// A helper function to know if a SHAPE_LINE_CHAIN is encoding a circle (now unused)
#if 0
static bool IsChainCircle( const SHAPE_LINE_CHAIN& aChain )
{
// If aChain is a circle it
// - contains only one arc
// - this arc has the same start and end point
const std::vector<SHAPE_ARC>& arcs = aChain.CArcs();
if( arcs.size() == 1 )
{
const SHAPE_ARC& arc = arcs[0];
if( arc. GetP0() == arc.GetP1() )
return true;
}
return false;
}
#endif
bool STEP_PCB_MODEL::MakeShapeAsCylinder( TopoDS_Shape& aShape,
const SHAPE_LINE_CHAIN& aChain, double aThickness,
double aZposition, const VECTOR2D& aOrigin )
{
if( !aShape.IsNull() )
return false; // there is already data in the shape object
if( !aChain.IsClosed() )
return false; // the loop is not closed
const std::vector<SHAPE_ARC>& arcs = aChain.CArcs();
const SHAPE_ARC& arc = arcs[0];
TopoDS_Shape base_shape;
base_shape = BRepPrimAPI_MakeCylinder(
pcbIUScale.IUTomm( arc.GetRadius() ), aThickness ).Shape();
gp_Trsf shift;
shift.SetTranslation( gp_Vec( pcbIUScale.IUTomm( arc.GetCenter().x - aOrigin.x ),
-pcbIUScale.IUTomm( arc.GetCenter().y - aOrigin.y ),
aZposition ) );
BRepBuilderAPI_Transform round_shape( base_shape, shift );
aShape = round_shape;
if( aShape.IsNull() )
{
ReportMessage( wxT( "failed to create a cylinder vertical shape\n" ) );
return false;
}
return true;
}
bool STEP_PCB_MODEL::MakeShapeAsThickSegment( TopoDS_Shape& aShape,
VECTOR2D aStartPoint, VECTOR2D aEndPoint,
double aWidth, double aThickness,
double aZposition, const VECTOR2D& aOrigin )
{
// make a wide segment from 2 lines and 2 180 deg arcs
// We need 6 points (3 per arcs)
VECTOR2D coords[6];
// We build a horizontal segment, and after rotate it
double len = ( aEndPoint - aStartPoint ).EuclideanNorm();
double h_width = aWidth/2.0;
// First is end point of first arc, and also start point of first line
coords[0] = VECTOR2D{ 0.0, h_width };
// end point of first line and start point of second arc
coords[1] = VECTOR2D{ len, h_width };
// middle point of second arc
coords[2] = VECTOR2D{ len + h_width, 0.0 };
// start point of second line and end point of second arc
coords[3] = VECTOR2D{ len, -h_width };
// end point of second line and start point of first arc
coords[4] = VECTOR2D{ 0, -h_width };
// middle point of first arc
coords[5] = VECTOR2D{ -h_width, 0.0 };
// Rotate and move to segment position
EDA_ANGLE seg_angle( aEndPoint - aStartPoint );
for( int ii = 0; ii < 6; ii++ )
{
RotatePoint( coords[ii], VECTOR2D{ 0, 0 }, -seg_angle ),
coords[ii] += aStartPoint;
}
// Convert to 3D points
gp_Pnt coords3D[ 6 ];
for( int ii = 0; ii < 6; ii++ )
{
coords3D[ii] = gp_Pnt( pcbIUScale.IUTomm( coords[ii].x - aOrigin.x ),
-pcbIUScale.IUTomm( coords[ii].y - aOrigin.y ), aZposition );
}
// Build OpenCascade shape outlines
BRepBuilderAPI_MakeWire wire;
bool success = true;
// Short segments (distance between end points < m_mergeOCCMaxDist(in mm)) must be
// skipped because OCC merge end points, and a null shape is created
bool short_seg = pcbIUScale.IUTomm( len ) <= m_mergeOCCMaxDist;
try
{
TopoDS_Edge edge;
if( short_seg )
{
Handle( Geom_Circle ) circle = GC_MakeCircle( coords3D[1], // arc1 start point
coords3D[2], // arc1 mid point
coords3D[5] // arc2 mid point
);
edge = BRepBuilderAPI_MakeEdge( circle );
wire.Add( edge );
}
else
{
edge = BRepBuilderAPI_MakeEdge( coords3D[0], coords3D[1] );
wire.Add( edge );
Handle( Geom_TrimmedCurve ) arcOfCircle =
GC_MakeArcOfCircle( coords3D[1], // start point
coords3D[2], // mid point
coords3D[3] // end point
);
edge = BRepBuilderAPI_MakeEdge( arcOfCircle );
wire.Add( edge );
edge = BRepBuilderAPI_MakeEdge( coords3D[3], coords3D[4] );
wire.Add( edge );
Handle( Geom_TrimmedCurve ) arcOfCircle2 =
GC_MakeArcOfCircle( coords3D[4], // start point
coords3D[5], // mid point
coords3D[0] // end point
);
edge = BRepBuilderAPI_MakeEdge( arcOfCircle2 );
wire.Add( edge );
}
}
catch( const Standard_Failure& e )
{
ReportMessage( wxString::Format( wxT( "build shape segment: OCC exception: %s\n" ),
e.GetMessageString() ) );
return false;
}
BRepBuilderAPI_MakeFace face;
try
{
gp_Pln plane( coords3D[0], gp::DZ() );
face = BRepBuilderAPI_MakeFace( plane, wire );
}
catch( const Standard_Failure& e )
{
ReportMessage( wxString::Format( wxT( "MakeShapeThickSegment: OCC exception: %s\n" ),
e.GetMessageString() ) );
return false;
}
if( aThickness != 0.0 )
{
aShape = BRepPrimAPI_MakePrism( face, gp_Vec( 0, 0, aThickness ) );
if( aShape.IsNull() )
{
ReportMessage( wxT( "failed to create a prismatic shape\n" ) );
return false;
}
}
else
{
aShape = face;
}
return success;
}
static wxString formatBBox( const BOX2I& aBBox )
{
wxString str;
UNITS_PROVIDER up( pcbIUScale, EDA_UNITS::MILLIMETRES );
str << "x0: " << up.StringFromValue( aBBox.GetLeft(), false ) << "; ";
str << "y0: " << up.StringFromValue( aBBox.GetTop(), false ) << "; ";
str << "x1: " << up.StringFromValue( aBBox.GetRight(), false ) << "; ";
str << "y1: " << up.StringFromValue( aBBox.GetBottom(), false );
return str;
}
bool STEP_PCB_MODEL::MakeShapes( std::vector<TopoDS_Shape>& aShapes, const SHAPE_POLY_SET& aPolySet, bool aConvertToArcs,
double aThickness, double aZposition, const VECTOR2D& aOrigin )
{
SHAPE_POLY_SET simplified = aPolySet;
simplified.Simplify( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
auto toPoint = [&]( const VECTOR2D& aKiCoords ) -> gp_Pnt
{
return gp_Pnt( pcbIUScale.IUTomm( aKiCoords.x - aOrigin.x ),
-pcbIUScale.IUTomm( aKiCoords.y - aOrigin.y ), aZposition );
};
for( const SHAPE_POLY_SET::POLYGON& polygon : simplified.CPolygons() )
{
auto makeWireFromChain = [&]( BRepLib_MakeWire& aMkWire,
const SHAPE_LINE_CHAIN& aChain ) -> bool
{
try
{
auto addSegment = [&]( const VECTOR2I& aPt0, const VECTOR2I& aPt1 ) -> bool
{
if( aPt0 == aPt1 )
return false;
gp_Pnt start = toPoint( aPt0 );
gp_Pnt end = toPoint( aPt1 );
// Do not export too short segments: they create broken shape because OCC thinks
// start point and end point are at the same place
double seg_len = std::hypot( end.X() - start.X(), end.Y() - start.Y() );
if( seg_len <= m_mergeOCCMaxDist )
return false;
BRepBuilderAPI_MakeEdge mkEdge( start, end );
if( !mkEdge.IsDone() || mkEdge.Edge().IsNull() )
{
ReportMessage( wxString::Format( wxT( "failed to make segment edge at (%d "
"%d) -> (%d %d), skipping\n" ),
aPt0.x, aPt0.y, aPt1.x, aPt1.y ) );
}
else
{
aMkWire.Add( mkEdge.Edge() );
if( aMkWire.Error() != BRepLib_WireDone )
{
ReportMessage( wxString::Format( wxT( "failed to add segment edge "
"at (%d %d) -> (%d %d)\n" ),
aPt0.x, aPt0.y, aPt1.x, aPt1.y ) );
return false;
}
}
return true;
};
auto addArc = [&]( const VECTOR2I& aPt0, const SHAPE_ARC& aArc ) -> bool
{
// Do not export too short segments: they create broken shape because OCC thinks
Handle( Geom_Curve ) curve;
if( aArc.GetCentralAngle() == ANGLE_360 )
{
gp_Ax2 axis = gp::XOY();
axis.SetLocation( toPoint( aArc.GetCenter() ) );
curve = GC_MakeCircle( axis, pcbIUScale.IUTomm( aArc.GetRadius() ) )
.Value();
}
else
{
curve = GC_MakeArcOfCircle( toPoint( aPt0 ), toPoint( aArc.GetArcMid() ),
toPoint( aArc.GetP1() ) )
.Value();
}
if( curve.IsNull() )
return false;
aMkWire.Add( BRepBuilderAPI_MakeEdge( curve ) );
if( !aMkWire.IsDone() )
{
ReportMessage( wxString::Format(
wxT( "failed to add arc curve from (%d %d), arc p0 "
"(%d %d), mid (%d %d), p1 (%d %d)\n" ),
aPt0.x, aPt0.y, aArc.GetP0().x, aArc.GetP0().y, aArc.GetArcMid().x,
aArc.GetArcMid().y, aArc.GetP1().x, aArc.GetP1().y ) );
return false;
}
return true;
};
VECTOR2I firstPt;
VECTOR2I lastPt;
bool isFirstShape = true;
for( int i = 0; i <= aChain.PointCount() && i != -1; i = aChain.NextShape( i ) )
{
if( i == 0 )
{
if( aChain.IsArcSegment( 0 )
&& aChain.IsArcSegment( aChain.PointCount() - 1 )
&& aChain.ArcIndex( 0 ) == aChain.ArcIndex( aChain.PointCount() - 1 ) )
{
// Skip first arc (we should encounter it later)
int nextShape = aChain.NextShape( i );
// If nextShape points to the end, then we have a circle.
if( nextShape != -1 )
i = nextShape;
}
}
if( isFirstShape )
lastPt = aChain.CPoint( i );
bool isArc = aChain.IsArcSegment( i );
if( aChain.IsArcStart( i ) )
{
const SHAPE_ARC& currentArc = aChain.Arc( aChain.ArcIndex( i ) );
if( isFirstShape )
{
firstPt = currentArc.GetP0();
lastPt = firstPt;
}
if( addSegment( lastPt, currentArc.GetP0() ) )
lastPt = currentArc.GetP0();
if( addArc( lastPt, currentArc ) )
lastPt = currentArc.GetP1();
}
else if( !isArc )
{
const SEG& seg = aChain.CSegment( i );
if( isFirstShape )
{
firstPt = seg.A;
lastPt = firstPt;
}
if( addSegment( lastPt, seg.A ) )
lastPt = seg.A;
if( addSegment( lastPt, seg.B ) )
lastPt = seg.B;
}
isFirstShape = false;
}
if( lastPt != firstPt )
addSegment( lastPt, firstPt );
}
catch( const Standard_Failure& e )
{
ReportMessage( wxString::Format( wxT( "makeWireFromChain: OCC exception: %s\n" ),
e.GetMessageString() ) );
return false;
}
return true;
};
auto tryMakeWire = [&makeWireFromChain,
&aZposition]( const SHAPE_LINE_CHAIN& aContour ) -> TopoDS_Wire
{
TopoDS_Wire wire;
BRepLib_MakeWire mkWire;
makeWireFromChain( mkWire, aContour );
if( mkWire.IsDone() )
{
wire = mkWire.Wire();
}
else
{
ReportMessage(
wxString::Format( _( "Wire not done (contour points %d): OCC error %d\n" ),
static_cast<int>( aContour.PointCount() ),
static_cast<int>( mkWire.Error() ) ) );
ReportMessage( wxString::Format( _( "z: %g; bounding box: %s\n" ), aZposition,
formatBBox( aContour.BBox() ) ) );
}
if( !wire.IsNull() )
{
BRepAlgoAPI_Check check( wire, false, true );
check.Perform();
if( !check.IsValid() )
{
ReportMessage( wxString::Format( _( "\nWire self-interference check "
"failed\n" ) ) );
ReportMessage( wxString::Format( _( "z: %g; bounding box: %s\n" ), aZposition,
formatBBox( aContour.BBox() ) ) );
wire.Nullify();
}
}
return wire;
};
BRepBuilderAPI_MakeFace mkFace;
for( size_t contId = 0; contId < polygon.size(); contId++ )
{
try
{
TopoDS_Wire wire;
// Try to approximate the polygon with arcs first
if( aConvertToArcs )
wire = tryMakeWire( approximateLineChainWithArcs( polygon[contId] ) );
// Fall back to original shape
if( wire.IsNull() )
{
wire = tryMakeWire( polygon[contId] );
if( aConvertToArcs && !wire.IsNull() )
ReportMessage( wxString::Format( _( "Using non-simplified polygon.\n" ) ) );
}
if( contId == 0 ) // Outline
{
if( !wire.IsNull() )
mkFace = BRepBuilderAPI_MakeFace( wire );
else
{
ReportMessage( wxString::Format( _( "\n** Outline skipped **\n" ) ) );
ReportMessage( wxString::Format( _( "z: %g; bounding box: %s\n" ),
aZposition,
formatBBox( polygon[contId].BBox() ) ) );
continue;
}
}
else // Hole
{
if( !wire.IsNull() )
mkFace.Add( wire );
else
{
ReportMessage( wxString::Format( _( "\n** Hole skipped **\n" ) ) );
ReportMessage( wxString::Format( _( "z: %g; bounding box: %s\n" ),
aZposition,
formatBBox( polygon[contId].BBox() ) ) );
}
}
}
catch( const Standard_Failure& e )
{
ReportMessage(
wxString::Format( wxT( "MakeShapes (contour %d): OCC exception: %s\n" ),
static_cast<int>( contId ), e.GetMessageString() ) );
return false;
}
}
if( mkFace.IsDone() )
{
if( aThickness != 0.0 )
{
TopoDS_Shape prism = BRepPrimAPI_MakePrism( mkFace, gp_Vec( 0, 0, aThickness ) );
aShapes.push_back( prism );
if( prism.IsNull() )
{
ReportMessage( wxT( "Failed to create a prismatic shape\n" ) );
return false;
}
}
else
{
aShapes.push_back( mkFace );
}
}
else
{
wxASSERT( false );
}
}
return true;
}
bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin, bool aPushBoardBody )
{
if( m_hasPCB )
{
if( !isBoardOutlineValid() )
return false;
return true;
}
Handle( XCAFDoc_ColorTool ) colorTool = XCAFDoc_DocumentTool::ColorTool( m_doc->Main() );
m_hasPCB = true; // whether or not operations fail we note that CreatePCB has been invoked
// Support for more than one main outline (more than one board)
ReportMessage( wxString::Format( wxT( "Build board outlines (%d outlines) with %d points.\n" ),
aOutline.OutlineCount(), aOutline.FullPointCount() ) );
double boardThickness;
double boardZPos;
getBoardBodyZPlacement( boardZPos, boardThickness );
#if 0
// This code should work, and it is working most of time
// However there are issues if the main outline is a circle with holes:
// holes from vias and pads are not working
// see bug https://gitlab.com/kicad/code/kicad/-/issues/17446
// (Holes are missing from STEP export with circular PCB outline)
// Hard to say if the bug is in our code or in OCC 7.7
if( !MakeShapes( m_board_outlines, aOutline, false, boardThickness, boardZPos, aOrigin ) )
{
// Error
ReportMessage( wxString::Format(
wxT( "OCC error creating main outline.\n" ) ) );
}
#else
// Workaround for bug #17446 Holes are missing from STEP export with circular PCB outline
for( const SHAPE_POLY_SET::POLYGON& polygon : aOutline.CPolygons() )
{
for( size_t contId = 0; contId < polygon.size(); contId++ )
{
const SHAPE_LINE_CHAIN& contour = polygon[contId];
SHAPE_POLY_SET polyset;
polyset.Append( contour );
if( contId == 0 ) // main Outline
{
if( !MakeShapes( m_board_outlines, polyset, false, boardThickness, boardZPos,
aOrigin ) )
{
ReportMessage( wxT( "OCC error creating main outline.\n" ) );
}
}
else // Hole inside the main outline
{
if( !MakeShapes( m_boardCutouts, polyset, false, boardThickness, boardZPos,
aOrigin ) )
{
ReportMessage( wxT( "OCC error creating hole in main outline.\n" ) );
}
}
}
}
#endif
// Even if we've disabled board body export, we still need the shapes for bounding box calculations.
Bnd_Box brdBndBox;
for( const TopoDS_Shape& brdShape : m_board_outlines )
BRepBndLib::Add( brdShape, brdBndBox );
// subtract cutouts (if any)
ReportMessage( wxString::Format( wxT( "Build board cutouts and holes (%d hole(s)).\n" ),
(int) ( m_boardCutouts.size() + m_copperCutouts.size() ) ) );
auto buildBSB = [&brdBndBox]( std::vector<TopoDS_Shape>& input, Bnd_BoundSortBox& bsbHoles )
{
// We need to encompass every location we'll need to test in the global bbox,
// otherwise Bnd_BoundSortBox doesn't work near the boundaries.
Bnd_Box brdWithHolesBndBox = brdBndBox;
Handle( Bnd_HArray1OfBox ) holeBoxSet = new Bnd_HArray1OfBox( 0, input.size() - 1 );
for( size_t i = 0; i < input.size(); i++ )
{
Bnd_Box bbox;
BRepBndLib::Add( input[i], bbox );
brdWithHolesBndBox.Add( bbox );
( *holeBoxSet )[i] = bbox;
}
bsbHoles.Initialize( brdWithHolesBndBox, holeBoxSet );
};
auto subtractShapes = []( const wxString& aWhat, std::vector<TopoDS_Shape>& aShapesList,
std::vector<TopoDS_Shape>& aHolesList, Bnd_BoundSortBox& aBSBHoles )
{
// Remove holes for each item (board body or bodies, one can have more than one board)
int cnt = 0;
for( TopoDS_Shape& shape : aShapesList )
{
Bnd_Box shapeBbox;
BRepBndLib::Add( shape, shapeBbox );
const TColStd_ListOfInteger& indices = aBSBHoles.Compare( shapeBbox );
TopTools_ListOfShape holelist;
for( const Standard_Integer& index : indices )
holelist.Append( aHolesList[index] );
if( cnt == 0 )
ReportMessage( wxString::Format( _( "Build holes for %s\n" ), aWhat ) );
cnt++;
if( cnt % 10 == 0 )
ReportMessage( wxString::Format( _( "Cutting %d/%d %s\n" ), cnt,
(int) aShapesList.size(), aWhat ) );
if( holelist.IsEmpty() )
continue;
TopTools_ListOfShape cutArgs;
cutArgs.Append( shape );
BRepAlgoAPI_Cut cut;
cut.SetRunParallel( true );
cut.SetToFillHistory( false );
cut.SetArguments( cutArgs );
cut.SetTools( holelist );
cut.Build();
if( cut.HasErrors() || cut.HasWarnings() )
{
ReportMessage( wxString::Format(
_( "\n** Got problems while cutting %s number %d **\n" ), aWhat, cnt ) );
shapeBbox.Dump();
if( cut.HasErrors() )
{
ReportMessage( _( "Errors:\n" ) );
cut.DumpErrors( std::cout );
}
if( cut.HasWarnings() )
{
ReportMessage( _( "Warnings:\n" ) );
cut.DumpWarnings( std::cout );
}
std::cout << "\n";
}
shape = cut.Shape();
}
};
if( m_boardCutouts.size() )
{
Bnd_BoundSortBox bsbHoles;
buildBSB( m_boardCutouts, bsbHoles );
subtractShapes( _( "shapes" ), m_board_outlines, m_boardCutouts, bsbHoles );
}
if( m_copperCutouts.size() )
{
Bnd_BoundSortBox bsbHoles;
buildBSB( m_copperCutouts, bsbHoles );
subtractShapes( _( "pads" ), m_board_copper_pads, m_copperCutouts, bsbHoles );
subtractShapes( _( "tracks" ), m_board_copper_tracks, m_copperCutouts, bsbHoles );
subtractShapes( _( "zones" ), m_board_copper_zones, m_copperCutouts, bsbHoles );
}
// push the board to the data structure
ReportMessage( wxT( "\nGenerate board full shape.\n" ) );
auto pushToAssembly = [&]( std::vector<TopoDS_Shape>& aShapesList, Quantity_Color aColor,
const wxString& aShapeName )
{
int i = 1;
for( TopoDS_Shape& shape : aShapesList )
{
Handle( TDataStd_TreeNode ) node;
// Dont expand the component or else coloring it gets hard
TDF_Label lbl = m_assy->AddComponent( m_assy_label, shape, false );
m_pcb_labels.push_back( lbl );
if( m_pcb_labels.back().IsNull() )
break;
lbl.FindAttribute( XCAFDoc::ShapeRefGUID(), node );
TDF_Label shpLbl = node->Father()->Label();
if( !shpLbl.IsNull() )
{
colorTool->SetColor( shpLbl, aColor, XCAFDoc_ColorSurf );
wxString shapeName;
if( aShapesList.size() > 1 )
{
shapeName = wxString::Format( wxT( "%s_%s_%d" ), m_pcbName, aShapeName, i );
}
else
{
shapeName = wxString::Format( wxT( "%s_%s" ), m_pcbName, aShapeName );
}
TCollection_ExtendedString partname( shapeName.ToUTF8().data() );
TDataStd_Name::Set( shpLbl, partname );
}
i++;
}
};
// AddComponent adds a label that has a reference (not a parent/child relation) to the real
// label. We need to extract that real label to name it for the STEP output cleanly
// Why are we trying to name the bare board? Because CAD tools like SolidWorks do fun things
// like "deduplicate" imported STEPs by swapping STEP assembly components with already
// identically named assemblies. So we want to avoid having the PCB be generally defaulted
// to "Component" or "Assembly".
// Init colors for the board body and the copper items (if any)
Quantity_Color board_color( m_boardColor[0], m_boardColor[1], m_boardColor[2],
Quantity_TOC_RGB );
Quantity_Color copper_color( m_copperColor[0], m_copperColor[1], m_copperColor[2],
Quantity_TOC_RGB );
if( m_fuseShapes )
{
ReportMessage( wxT( "Fusing shapes\n" ) );
auto iterateCopperItems = [this]( std::function<void( TopoDS_Shape& )> aFn )
{
for( TopoDS_Shape& shape : m_board_copper_tracks )
aFn( shape );
for( TopoDS_Shape& shape : m_board_copper_zones )
aFn( shape );
for( TopoDS_Shape& shape : m_board_copper_pads )
aFn( shape );
};
BRepAlgoAPI_Fuse mkFuse;
TopTools_ListOfShape shapeArguments, shapeTools;
iterateCopperItems(
[&]( TopoDS_Shape& sh )
{
if( sh.IsNull() )
return;
if( shapeArguments.IsEmpty() )
shapeArguments.Append( sh );
else
shapeTools.Append( sh );
} );
mkFuse.SetRunParallel( true );
mkFuse.SetToFillHistory( false );
mkFuse.SetArguments( shapeArguments );
mkFuse.SetTools( shapeTools );
mkFuse.Build();
if( mkFuse.HasErrors() || mkFuse.HasWarnings() )
{
ReportMessage( _( "** Got problems while fusing shapes **\n" ) );
if( mkFuse.HasErrors() )
{
ReportMessage( _( "Errors:\n" ) );
mkFuse.DumpErrors( std::cout );
}
if( mkFuse.HasWarnings() )
{
ReportMessage( _( "Warnings:\n" ) );
mkFuse.DumpWarnings( std::cout );
}
std::cout << "\n";
}
if( mkFuse.IsDone() )
{
ReportMessage( wxT( "Removing extra edges/faces\n" ) );
TopoDS_Shape fusedShape = mkFuse.Shape();
ShapeUpgrade_UnifySameDomain unify( fusedShape, true, true, false );
unify.History() = nullptr;
unify.Build();
TopoDS_Shape unifiedShapes = unify.Shape();
if( !unifiedShapes.IsNull() )
{
m_board_copper_fused.emplace_back( unifiedShapes );
}
else
{
ReportMessage( _( "** ShapeUpgrade_UnifySameDomain produced a null shape **\n" ) );
m_board_copper_fused.emplace_back( fusedShape );
}
m_board_copper_tracks.clear();
m_board_copper_zones.clear();
m_board_copper_pads.clear();
}
}
pushToAssembly( m_board_copper_tracks, copper_color, "track" );
pushToAssembly( m_board_copper_zones, copper_color, "zone" );
pushToAssembly( m_board_copper_pads, copper_color, "pad" );
pushToAssembly( m_board_copper_fused, copper_color, "copper" );
if( aPushBoardBody )
pushToAssembly( m_board_outlines, board_color, "PCB" );
#if( defined OCC_VERSION_HEX ) && ( OCC_VERSION_HEX > 0x070101 )
m_assy->UpdateAssemblies();
#endif
return true;
}
#ifdef SUPPORTS_IGES
// write the assembly model in IGES format
bool STEP_PCB_MODEL::WriteIGES( const wxString& aFileName )
{
if( !isBoardOutlineValid() )
{
ReportMessage( wxString::Format( wxT( "No valid PCB assembly; cannot create output file "
"'%s'.\n" ),
aFileName ) );
return false;
}
wxFileName fn( aFileName );
IGESControl_Controller::Init();
IGESCAFControl_Writer writer;
writer.SetColorMode( Standard_True );
writer.SetNameMode( Standard_True );
IGESData_GlobalSection header = writer.Model()->GlobalSection();
header.SetFileName( new TCollection_HAsciiString( fn.GetFullName().ToAscii() ) );
header.SetSendName( new TCollection_HAsciiString( "KiCad electronic assembly" ) );
header.SetAuthorName(
new TCollection_HAsciiString( Interface_Static::CVal( "write.iges.header.author" ) ) );
header.SetCompanyName(
new TCollection_HAsciiString( Interface_Static::CVal( "write.iges.header.company" ) ) );
writer.Model()->SetGlobalSection( header );
if( Standard_False == writer.Perform( m_doc, aFileName.c_str() ) )
return false;
return true;
}
#endif
bool STEP_PCB_MODEL::WriteSTEP( const wxString& aFileName, bool aOptimize )
{
if( !isBoardOutlineValid() )
{
ReportMessage( wxString::Format( wxT( "No valid PCB assembly; cannot create output file "
"'%s'.\n" ),
aFileName ) );
return false;
}
wxFileName fn( aFileName );
STEPCAFControl_Writer writer;
writer.SetColorMode( Standard_True );
writer.SetNameMode( Standard_True );
// This must be set before we "transfer" the document.
// Should default to kicad_pcb.general.title_block.title,
// but in the meantime, defaulting to the basename of the output
// target is still better than "open cascade step translter v..."
// UTF8 should be ok from ISO 10303-21:2016, but... older stuff? use boring ascii
if( !Interface_Static::SetCVal( "write.step.product.name", fn.GetName().ToAscii() ) )
ReportMessage( wxT( "Failed to set step product name, but will attempt to continue." ) );
// Setting write.surfacecurve.mode to 0 reduces file size and write/read times.
// But there are reports that this mode might be less compatible in some cases.
if( !Interface_Static::SetIVal( "write.surfacecurve.mode", aOptimize ? 0 : 1 ) )
ReportMessage( wxT( "Failed to set surface curve mode, but will attempt to continue." ) );
if( Standard_False == writer.Transfer( m_doc, STEPControl_AsIs ) )
return false;
APIHeaderSection_MakeHeader hdr( writer.ChangeWriter().Model() );
// Note: use only Ascii7 chars, non Ascii7 chars (therefore UFT8 chars)
// are creating issues in the step file
hdr.SetName( new TCollection_HAsciiString( fn.GetFullName().ToAscii() ) );
// TODO: how to control and ensure consistency with IGES?
hdr.SetAuthorValue( 1, new TCollection_HAsciiString( "Pcbnew" ) );
hdr.SetOrganizationValue( 1, new TCollection_HAsciiString( "Kicad" ) );
hdr.SetOriginatingSystem( new TCollection_HAsciiString( "KiCad to STEP converter" ) );
hdr.SetDescriptionValue( 1, new TCollection_HAsciiString( "KiCad electronic assembly" ) );
bool success = true;
// Creates a temporary file with a ascii7 name, because writer does not know unicode filenames.
wxString currCWD = wxGetCwd();
wxString workCWD = fn.GetPath();
if( !workCWD.IsEmpty() )
wxSetWorkingDirectory( workCWD );
char tmpfname[] = "$tempfile$.step";
if( Standard_False == writer.Write( tmpfname ) )
success = false;
if( success )
{
// Preserve the permissions of the current file
KIPLATFORM::IO::DuplicatePermissions( fn.GetFullPath(), tmpfname );
if( !wxRenameFile( tmpfname, fn.GetFullName(), true ) )
{
ReportMessage( wxString::Format( wxT( "Cannot rename temporary file '%s' to '%s'.\n" ),
tmpfname,
fn.GetFullName() ) );
success = false;
}
}
wxSetWorkingDirectory( currCWD );
return success;
}
bool STEP_PCB_MODEL::WriteBREP( const wxString& aFileName )
{
if( !isBoardOutlineValid() )
{
ReportMessage( wxString::Format( wxT( "No valid PCB assembly; cannot create output file "
"'%s'.\n" ),
aFileName ) );
return false;
}
// s_assy = shape tool for the source
Handle( XCAFDoc_ShapeTool ) s_assy = XCAFDoc_DocumentTool::ShapeTool( m_doc->Main() );
// retrieve assembly as a single shape
TopoDS_Shape shape = getOneShape( s_assy );
wxFileName fn( aFileName );
wxFFileOutputStream ffStream( fn.GetFullPath() );
wxStdOutputStream stdStream( ffStream );
#if OCC_VERSION_HEX >= 0x070600
BRepTools::Write( shape, stdStream, false, false, TopTools_FormatVersion_VERSION_1 );
#else
BRepTools::Write( shape, stdStream );
#endif
return true;
}
bool STEP_PCB_MODEL::WriteXAO( const wxString& aFileName )
{
wxFileName fn( aFileName );
wxFFileOutputStream ffStream( fn.GetFullPath() );
wxStdOutputStream file( ffStream );
if( !ffStream.IsOk() )
{
ReportMessage( wxString::Format( "Could not open file '%s'", fn.GetFullPath() ) );
return false;
}
// s_assy = shape tool for the source
Handle( XCAFDoc_ShapeTool ) s_assy = XCAFDoc_DocumentTool::ShapeTool( m_doc->Main() );
// retrieve assembly as a single shape
const TopoDS_Shape shape = getOneShape( s_assy );
std::map<wxString, std::vector<int>> groups[4];
TopExp_Explorer exp;
int faceIndex = 0;
for( exp.Init( shape, TopAbs_FACE ); exp.More(); exp.Next() )
{
TopoDS_Shape subShape = exp.Current();
Bnd_Box bbox;
BRepBndLib::Add( subShape, bbox );
for( const auto& [padKey, pair] : m_pad_points )
{
const auto& [point, padTestShape] = pair;
if( bbox.IsOut( point ) )
continue;
BRepAdaptor_Surface surface( TopoDS::Face( subShape ) );
if( surface.GetType() != GeomAbs_Plane )
continue;
BRepExtrema_DistShapeShape dist( padTestShape, subShape );
dist.Perform();
if( !dist.IsDone() )
continue;
if( dist.Value() < Precision::Approximation() )
{
// Push as a face group
groups[2][padKey].push_back( faceIndex );
}
}
faceIndex++;
}
// Based on Gmsh code
file << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" << std::endl;
file << "<XAO version=\"1.0\" author=\"KiCad\">" << std::endl;
file << " <geometry name=\"" << fn.GetName() << "\">" << std::endl;
file << " <shape format=\"BREP\"><![CDATA[";
#if OCC_VERSION_HEX < 0x070600
BRepTools::Write( shape, file );
#else
BRepTools::Write( shape, file, Standard_True, Standard_True, TopTools_FormatVersion_VERSION_1 );
#endif
file << "]]></shape>" << std::endl;
file << " <topology>" << std::endl;
TopTools_IndexedMapOfShape mainMap;
TopExp::MapShapes( shape, mainMap );
std::set<int> topo[4];
static const TopAbs_ShapeEnum c_dimShapeTypes[] = { TopAbs_VERTEX, TopAbs_EDGE, TopAbs_FACE,
TopAbs_SOLID };
static const std::string c_dimLabel[] = { "vertex", "edge", "face", "solid" };
static const std::string c_dimLabels[] = { "vertices", "edges", "faces", "solids" };
for( int dim = 0; dim < 4; dim++ )
{
for( exp.Init( shape, c_dimShapeTypes[dim] ); exp.More(); exp.Next() )
{
TopoDS_Shape subShape = exp.Current();
int idx = mainMap.FindIndex( subShape );
if( idx && !topo[dim].count( idx ) )
topo[dim].insert( idx );
}
}
for( int dim = 0; dim <= 3; dim++ )
{
std::string labels = c_dimLabels[dim];
std::string label = c_dimLabel[dim];
file << " <" << labels << " count=\"" << topo[dim].size() << "\">" << std::endl;
int index = 0;
for( auto p : topo[dim] )
{
std::string name( "" );
file << " <" << label << " index=\"" << index << "\" "
<< "name=\"" << name << "\" "
<< "reference=\"" << p << "\"/>" << std::endl;
index++;
}
file << " </" << labels << ">" << std::endl;
}
file << " </topology>" << std::endl;
file << " </geometry>" << std::endl;
file << " <groups count=\""
<< groups[0].size() + groups[1].size() + groups[2].size() + groups[3].size() << "\">"
<< std::endl;
for( int dim = 0; dim <= 3; dim++ )
{
std::string label = c_dimLabel[dim];
for( auto g : groups[dim] )
{
//std::string name = model->getPhysicalName( dim, g.first );
wxString name = g.first;
if( name.empty() )
{ // create same unique name as for MED export
std::ostringstream gs;
gs << "G_" << dim << "D_" << g.first;
name = gs.str();
}
file << " <group name=\"" << name << "\" dimension=\"" << label;
//#if 1
// // Gmsh XAO extension: also save the physical tag, so that XAO can be used
// // to serialize OCC geometries, ready to be used by GetDP, GmshFEM & co
// file << "\" tag=\"" << g.first;
//#endif
file << "\" count=\"" << g.second.size() << "\">" << std::endl;
for( auto index : g.second )
{
file << " <element index=\"" << index << "\"/>" << std::endl;
}
file << " </group>" << std::endl;
}
}
file << " </groups>" << std::endl;
file << " <fields count=\"0\"/>" << std::endl;
file << "</XAO>" << std::endl;
return true;
}
bool STEP_PCB_MODEL::getModelLabel( const std::string& aFileNameUTF8, VECTOR3D aScale, TDF_Label& aLabel,
bool aSubstituteModels, wxString* aErrorMessage )
{
std::string model_key = aFileNameUTF8 + "_" + std::to_string( aScale.x )
+ "_" + std::to_string( aScale.y ) + "_" + std::to_string( aScale.z );
MODEL_MAP::const_iterator mm = m_models.find( model_key );
if( mm != m_models.end() )
{
aLabel = mm->second;
return true;
}
aLabel.Nullify();
Handle( TDocStd_Document ) doc;
m_app->NewDocument( "MDTV-XCAF", doc );
wxString fileName( wxString::FromUTF8( aFileNameUTF8.c_str() ) );
MODEL3D_FORMAT_TYPE modelFmt = fileType( aFileNameUTF8.c_str() );
switch( modelFmt )
{
case FMT_IGES:
if( !readIGES( doc, aFileNameUTF8.c_str() ) )
{
ReportMessage( wxString::Format( wxT( "readIGES() failed on filename '%s'.\n" ),
fileName ) );
return false;
}
break;
case FMT_STEP:
if( !readSTEP( doc, aFileNameUTF8.c_str() ) )
{
ReportMessage( wxString::Format( wxT( "readSTEP() failed on filename '%s'.\n" ),
fileName ) );
return false;
}
break;
case FMT_STEPZ:
{
// To export a compressed step file (.stpz or .stp.gz file), the best way is to
// decaompress it in a temporaty file and load this temporary file
wxFFileInputStream ifile( fileName );
wxFileName outFile( fileName );
outFile.SetPath( wxStandardPaths::Get().GetTempDir() );
outFile.SetExt( wxT( "step" ) );
wxFileOffset size = ifile.GetLength();
if( size == wxInvalidOffset )
{
ReportMessage( wxString::Format( wxT( "getModelLabel() failed on filename '%s'.\n" ),
fileName ) );
return false;
}
{
bool success = false;
wxFFileOutputStream ofile( outFile.GetFullPath() );
if( !ofile.IsOk() )
return false;
char* buffer = new char[size];
ifile.Read( buffer, size );
std::string expanded;
try
{
expanded = gzip::decompress( buffer, size );
success = true;
}
catch( ... )
{
ReportMessage( wxString::Format( wxT( "failed to decompress '%s'.\n" ),
fileName ) );
}
if( expanded.empty() )
{
ifile.Reset();
ifile.SeekI( 0 );
wxZipInputStream izipfile( ifile );
std::unique_ptr<wxZipEntry> zip_file( izipfile.GetNextEntry() );
if( zip_file && !zip_file->IsDir() && izipfile.CanRead() )
{
izipfile.Read( ofile );
success = true;
}
}
else
{
ofile.Write( expanded.data(), expanded.size() );
}
delete[] buffer;
ofile.Close();
if( success )
{
std::string altFileNameUTF8 = TO_UTF8( outFile.GetFullPath() );
success =
getModelLabel( altFileNameUTF8, VECTOR3D( 1.0, 1.0, 1.0 ), aLabel, false );
}
return success;
}
break;
}
case FMT_WRL:
case FMT_WRZ:
/* WRL files are preferred for internal rendering, due to superior material properties, etc.
* However they are not suitable for MCAD export.
*
* If a .wrl file is specified, attempt to locate a replacement file for it.
*
* If a valid replacement file is found, the label for THAT file will be associated with
* the .wrl file
*/
if( aSubstituteModels )
{
wxFileName wrlName( fileName );
wxString basePath = wrlName.GetPath();
wxString baseName = wrlName.GetName();
// List of alternate files to look for
// Given in order of preference
// (Break if match is found)
wxArrayString alts;
// Step files
alts.Add( wxT( "stp" ) );
alts.Add( wxT( "step" ) );
alts.Add( wxT( "STP" ) );
alts.Add( wxT( "STEP" ) );
alts.Add( wxT( "Stp" ) );
alts.Add( wxT( "Step" ) );
alts.Add( wxT( "stpz" ) );
alts.Add( wxT( "stpZ" ) );
alts.Add( wxT( "STPZ" ) );
alts.Add( wxT( "step.gz" ) );
alts.Add( wxT( "stp.gz" ) );
// IGES files
alts.Add( wxT( "iges" ) );
alts.Add( wxT( "IGES" ) );
alts.Add( wxT( "igs" ) );
alts.Add( wxT( "IGS" ) );
//TODO - Other alternative formats?
for( const auto& alt : alts )
{
wxFileName altFile( basePath, baseName + wxT( "." ) + alt );
if( altFile.IsOk() && altFile.FileExists() )
{
std::string altFileNameUTF8 = TO_UTF8( altFile.GetFullPath() );
// When substituting a STEP/IGS file for VRML, do not apply the VRML scaling
// to the new STEP model. This process of auto-substitution is janky as all
// heck so let's not mix up un-displayed scale factors with potentially
// mis-matched files. And hope that the user doesn't have multiples files
// named "model.wrl" and "model.stp" referring to different parts.
// TODO: Fix model handling in v7. Default models should only be STP.
// Have option to override this in DISPLAY.
if( getModelLabel( altFileNameUTF8, VECTOR3D( 1.0, 1.0, 1.0 ), aLabel, false ) )
{
return true;
}
}
}
// VRML models only work when exporting to glTF
// Also OCCT < 7.9.0 fail to load most VRML 2.0 models because of Switch nodes
if( readVRML( doc, aFileNameUTF8.c_str() ) )
{
Handle( XCAFDoc_ShapeTool ) shapeTool =
XCAFDoc_DocumentTool::ShapeTool( doc->Main() );
prefixNames( shapeTool->Label(),
TCollection_ExtendedString( baseName.c_str().AsChar() ) );
}
else
{
ReportMessage( wxString::Format( wxT( "readVRML() failed on filename '%s'.\n" ),
fileName ) );
return false;
}
}
else // Substitution is not allowed
{
if( aErrorMessage )
aErrorMessage->Printf( wxT( "Cannot load any VRML model for this export.\n" ) );
return false;
}
break;
// TODO: implement IDF and EMN converters
default:
return false;
}
aLabel = transferModel( doc, m_doc, aScale );
if( aLabel.IsNull() )
{
ReportMessage( wxString::Format( wxT( "Could not transfer model data from file '%s'.\n" ),
fileName ) );
return false;
}
// attach the PART NAME ( base filename: note that in principle
// different models may have the same base filename )
wxFileName afile( fileName );
std::string pname( afile.GetName().ToUTF8() );
TCollection_ExtendedString partname( pname.c_str() );
TDataStd_Name::Set( aLabel, partname );
m_models.insert( MODEL_DATUM( model_key, aLabel ) );
++m_components;
return true;
}
bool STEP_PCB_MODEL::getModelLocation( bool aBottom, VECTOR2D aPosition, double aRotation, VECTOR3D aOffset, VECTOR3D aOrientation,
TopLoc_Location& aLocation )
{
// Order of operations:
// a. aOrientation is applied -Z*-Y*-X
// b. aOffset is applied
// Top ? add thickness to the Z offset
// c. Bottom ? Rotate on X axis (in contrast to most ECAD which mirror on Y),
// then rotate on +Z
// Top ? rotate on -Z
// d. aPosition is applied
//
// Note: Y axis is inverted in KiCad
gp_Trsf lPos;
lPos.SetTranslation( gp_Vec( aPosition.x, -aPosition.y, 0.0 ) );
// Offset board thickness
aOffset.z += BOARD_OFFSET;
double boardThickness;
double boardZPos;
getBoardBodyZPlacement( boardZPos, boardThickness );
double top = std::max( boardZPos, boardZPos + boardThickness );
double bottom = std::min( boardZPos, boardZPos + boardThickness );
gp_Trsf lRot;
if( aBottom )
{
aOffset.z -= bottom;
lRot.SetRotation( gp_Ax1( gp_Pnt( 0.0, 0.0, 0.0 ), gp_Dir( 0.0, 0.0, 1.0 ) ), aRotation );
lPos.Multiply( lRot );
lRot.SetRotation( gp_Ax1( gp_Pnt( 0.0, 0.0, 0.0 ), gp_Dir( 1.0, 0.0, 0.0 ) ), M_PI );
lPos.Multiply( lRot );
}
else
{
aOffset.z += top;
lRot.SetRotation( gp_Ax1( gp_Pnt( 0.0, 0.0, 0.0 ), gp_Dir( 0.0, 0.0, 1.0 ) ), aRotation );
lPos.Multiply( lRot );
}
gp_Trsf lOff;
lOff.SetTranslation( gp_Vec( aOffset.x, aOffset.y, aOffset.z ) );
lPos.Multiply( lOff );
gp_Trsf lOrient;
lOrient.SetRotation( gp_Ax1( gp_Pnt( 0.0, 0.0, 0.0 ), gp_Dir( 0.0, 0.0, 1.0 ) ),
-aOrientation.z );
lPos.Multiply( lOrient );
lOrient.SetRotation( gp_Ax1( gp_Pnt( 0.0, 0.0, 0.0 ), gp_Dir( 0.0, 1.0, 0.0 ) ),
-aOrientation.y );
lPos.Multiply( lOrient );
lOrient.SetRotation( gp_Ax1( gp_Pnt( 0.0, 0.0, 0.0 ), gp_Dir( 1.0, 0.0, 0.0 ) ),
-aOrientation.x );
lPos.Multiply( lOrient );
aLocation = TopLoc_Location( lPos );
return true;
}
bool STEP_PCB_MODEL::readIGES( Handle( TDocStd_Document )& doc, const char* fname )
{
IGESControl_Controller::Init();
IGESCAFControl_Reader reader;
IFSelect_ReturnStatus stat = reader.ReadFile( fname );
if( stat != IFSelect_RetDone )
return false;
// Enable user-defined shape precision
if( !Interface_Static::SetIVal( "read.precision.mode", 1 ) )
return false;
// Set the shape conversion precision to USER_PREC (default 0.0001 has too many triangles)
if( !Interface_Static::SetRVal( "read.precision.val", USER_PREC ) )
return false;
// set other translation options
reader.SetColorMode( true ); // use model colors
reader.SetNameMode( false ); // don't use IGES label names
reader.SetLayerMode( false ); // ignore LAYER data
if( !reader.Transfer( doc ) )
{
if( doc->CanClose() == CDM_CCS_OK )
doc->Close();
return false;
}
// are there any shapes to translate?
if( reader.NbShapes() < 1 )
{
if( doc->CanClose() == CDM_CCS_OK )
doc->Close();
return false;
}
return true;
}
bool STEP_PCB_MODEL::readSTEP( Handle( TDocStd_Document )& doc, const char* fname )
{
STEPCAFControl_Reader reader;
IFSelect_ReturnStatus stat = reader.ReadFile( fname );
if( stat != IFSelect_RetDone )
return false;
// Enable user-defined shape precision
if( !Interface_Static::SetIVal( "read.precision.mode", 1 ) )
return false;
// Set the shape conversion precision to USER_PREC (default 0.0001 has too many triangles)
if( !Interface_Static::SetRVal( "read.precision.val", USER_PREC ) )
return false;
// set other translation options
reader.SetColorMode( true ); // use model colors
reader.SetNameMode( true ); // use label names
reader.SetLayerMode( false ); // ignore LAYER data
if( !reader.Transfer( doc ) )
{
if( doc->CanClose() == CDM_CCS_OK )
doc->Close();
return false;
}
// are there any shapes to translate?
if( reader.NbRootsForTransfer() < 1 )
{
if( doc->CanClose() == CDM_CCS_OK )
doc->Close();
return false;
}
return true;
}
bool STEP_PCB_MODEL::readVRML( Handle( TDocStd_Document ) & doc, const char* fname )
{
#if OCC_VERSION_HEX >= 0x070700
VrmlAPI_CafReader reader;
RWMesh_CoordinateSystemConverter conv;
conv.SetInputLengthUnit( 2.54 );
reader.SetCoordinateSystemConverter( conv );
reader.SetDocument( doc );
if( !reader.Perform( TCollection_AsciiString( fname ), Message_ProgressRange() ) )
return false;
return true;
#else
return false;
#endif
}
TDF_Label STEP_PCB_MODEL::transferModel( Handle( TDocStd_Document ) & source,
Handle( TDocStd_Document ) & dest, VECTOR3D aScale )
{
// transfer data from Source into a top level component of Dest
// s_assy = shape tool for the source
Handle( XCAFDoc_ShapeTool ) s_assy = XCAFDoc_DocumentTool::ShapeTool( source->Main() );
// retrieve all free shapes within the assembly
TDF_LabelSequence frshapes;
s_assy->GetFreeShapes( frshapes );
// d_assy = shape tool for the destination
Handle( XCAFDoc_ShapeTool ) d_assy = XCAFDoc_DocumentTool::ShapeTool( dest->Main() );
// create a new shape within the destination and set the assembly tool to point to it
TDF_Label d_targetLabel = d_assy->NewShape();
if( frshapes.Size() == 1 )
{
TDocStd_XLinkTool link;
link.Copy( d_targetLabel, frshapes.First() );
}
else
{
// Rare case
for( TDF_Label& s_shapeLabel : frshapes )
{
TDF_Label d_component = d_assy->NewShape();
TDocStd_XLinkTool link;
link.Copy( d_component, s_shapeLabel );
d_assy->AddComponent( d_targetLabel, d_component, TopLoc_Location() );
}
}
if( aScale.x != 1.0 || aScale.y != 1.0 || aScale.z != 1.0 )
rescaleShapes( d_targetLabel, gp_XYZ( aScale.x, aScale.y, aScale.z ) );
return d_targetLabel;
}
bool STEP_PCB_MODEL::WriteGLTF( const wxString& aFileName )
{
if( !isBoardOutlineValid() )
{
ReportMessage( wxString::Format( wxT( "No valid PCB assembly; cannot create output file "
"'%s'.\n" ),
aFileName ) );
return false;
}
TDF_LabelSequence freeShapes;
m_assy->GetFreeShapes( freeShapes );
ReportMessage( wxT( "Meshing model\n" ) );
// GLTF is a mesh format, we have to trigger opencascade to mesh the shapes we composited into the asesmbly
// To mesh models, lets just grab the free shape root and execute on them
for( Standard_Integer i = 1; i <= freeShapes.Length(); ++i )
{
TDF_Label label = freeShapes.Value( i );
TopoDS_Shape shape;
m_assy->GetShape( label, shape );
// These deflection values basically affect the accuracy of the mesh generated, a tighter
// deflection will result in larger meshes
// We could make this a tunable parameter, but for now fix it
const Standard_Real linearDeflection = 0.01;
const Standard_Real angularDeflection = 0.5;
BRepMesh_IncrementalMesh mesh( shape, linearDeflection, Standard_False, angularDeflection,
Standard_True );
}
wxFileName fn( aFileName );
const char* tmpGltfname = "$tempfile$.glb";
RWGltf_CafWriter cafWriter( tmpGltfname, true );
cafWriter.SetTransformationFormat( RWGltf_WriterTrsfFormat_Compact );
cafWriter.ChangeCoordinateSystemConverter().SetInputLengthUnit( 0.001 );
cafWriter.ChangeCoordinateSystemConverter().SetInputCoordinateSystem(
RWMesh_CoordinateSystem_Zup );
#if OCC_VERSION_HEX >= 0x070700
cafWriter.SetParallel( true );
#endif
TColStd_IndexedDataMapOfStringString metadata;
metadata.Add( TCollection_AsciiString( "pcb_name" ),
TCollection_ExtendedString( fn.GetName().wc_str() ) );
metadata.Add( TCollection_AsciiString( "source_pcb_file" ),
TCollection_ExtendedString( fn.GetFullName().wc_str() ) );
metadata.Add( TCollection_AsciiString( "generator" ),
TCollection_AsciiString( wxString::Format( wxS( "KiCad %s" ), GetSemanticVersion() ).ToAscii() ) );
metadata.Add( TCollection_AsciiString( "generated_at" ),
TCollection_AsciiString( GetISO8601CurrentDateTime().ToAscii() ) );
bool success = true;
// Creates a temporary file with a ascii7 name, because writer does not know unicode filenames.
wxString currCWD = wxGetCwd();
wxString workCWD = fn.GetPath();
if( !workCWD.IsEmpty() )
wxSetWorkingDirectory( workCWD );
success = cafWriter.Perform( m_doc, metadata, Message_ProgressRange() );
if( success )
{
// Preserve the permissions of the current file
KIPLATFORM::IO::DuplicatePermissions( fn.GetFullPath(), tmpGltfname );
if( !wxRenameFile( tmpGltfname, fn.GetFullName(), true ) )
{
ReportMessage( wxString::Format( wxT( "Cannot rename temporary file '%s' to '%s'.\n" ),
tmpGltfname, fn.GetFullName() ) );
success = false;
}
}
wxSetWorkingDirectory( currCWD );
return success;
}
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