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kicad/plugins/3d/oce/loadmodel.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2016 Cirilo Bernardo <cirilo.bernardo@gmail.com>
*
* 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 <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <cstring>
#include <map>
#include <vector>
#include <wx/string.h>
#include <wx/wfstream.h>
#if ( defined( DEBUG_OCE ) && DEBUG_OCE > 3 )
#include <wx/filename.h>
#endif
#include <TDocStd_Document.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Shape.hxx>
#include <Quantity_Color.hxx>
#include <XCAFApp_Application.hxx>
#include <AIS_Shape.hxx>
#include <IGESControl_Reader.hxx>
#include <IGESCAFControl_Reader.hxx>
#include <Interface_Static.hxx>
#include <STEPControl_Reader.hxx>
#include <STEPCAFControl_Reader.hxx>
#include <XCAFDoc_DocumentTool.hxx>
#include <XCAFDoc_ColorTool.hxx>
#include <XCAFDoc_ShapeTool.hxx>
#include <BRep_Tool.hxx>
#include <BRepMesh_IncrementalMesh.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Shape.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Compound.hxx>
#include <TopExp_Explorer.hxx>
#include <Quantity_Color.hxx>
#include <Poly_Triangulation.hxx>
#include <Poly_PolygonOnTriangulation.hxx>
#include <Precision.hxx>
#include <TDF_LabelSequence.hxx>
#include <TDF_ChildIterator.hxx>
#include "plugins/3dapi/ifsg_all.h"
// log mask for wxLogTrace
#define MASK_OCE "PLUGIN_OCE"
// precision for mesh creation; 0.07 should be good enough for ECAD viewing
#define USER_PREC (0.14)
// angular deflection for meshing
// 10 deg (36 faces per circle) = 0.17453293
// 20 deg (18 faces per circle) = 0.34906585
// 30 deg (12 faces per circle) = 0.52359878
#define USER_ANGLE (0.52359878)
typedef std::map< Standard_Real, SGNODE* > COLORMAP;
typedef std::map< std::string, SGNODE* > FACEMAP;
typedef std::map< std::string, std::vector< SGNODE* > > NODEMAP;
typedef std::pair< std::string, std::vector< SGNODE* > > NODEITEM;
struct DATA;
bool processNode( const TopoDS_Shape& shape, DATA& data, SGNODE* parent,
std::vector< SGNODE* >* items );
bool processComp( const TopoDS_Shape& shape, DATA& data, SGNODE* parent,
std::vector< SGNODE* >* items );
bool processFace( const TopoDS_Face& face, DATA& data, SGNODE* parent,
std::vector< SGNODE* >* items, Quantity_Color* color );
struct DATA
{
Handle( TDocStd_Document ) m_doc;
Handle( XCAFDoc_ColorTool ) m_color;
Handle( XCAFDoc_ShapeTool ) m_assy;
SGNODE* scene;
SGNODE* defaultColor;
Quantity_Color refColor;
NODEMAP shapes; // SGNODE lists representing a TopoDS_SOLID / COMPOUND
COLORMAP colors; // SGAPPEARANCE nodes
FACEMAP faces; // SGSHAPE items representing a TopoDS_FACE
bool renderBoth; // set TRUE if we're processing IGES
bool hasSolid; // set TRUE if there is no parent SOLID
DATA()
{
scene = NULL;
defaultColor = NULL;
refColor.SetValues( Quantity_NOC_BLACK );
renderBoth = false;
hasSolid = false;
}
~DATA()
{
// destroy any colors with no parent
if( !colors.empty() )
{
COLORMAP::iterator sC = colors.begin();
COLORMAP::iterator eC = colors.end();
while( sC != eC )
{
if( NULL == S3D::GetSGNodeParent( sC->second ) )
S3D::DestroyNode( sC->second );
++sC;
}
colors.clear();
}
if( defaultColor && NULL == S3D::GetSGNodeParent( defaultColor ) )
S3D::DestroyNode(defaultColor);
// destroy any faces with no parent
if( !faces.empty() )
{
FACEMAP::iterator sF = faces.begin();
FACEMAP::iterator eF = faces.end();
while( sF != eF )
{
if( NULL == S3D::GetSGNodeParent( sF->second ) )
S3D::DestroyNode( sF->second );
++sF;
}
faces.clear();
}
// destroy any shapes with no parent
if( !shapes.empty() )
{
NODEMAP::iterator sS = shapes.begin();
NODEMAP::iterator eS = shapes.end();
while( sS != eS )
{
std::vector< SGNODE* >::iterator sV = sS->second.begin();
std::vector< SGNODE* >::iterator eV = sS->second.end();
while( sV != eV )
{
if( NULL == S3D::GetSGNodeParent( *sV ) )
S3D::DestroyNode( *sV );
++sV;
}
sS->second.clear();
++sS;
}
shapes.clear();
}
if( scene )
S3D::DestroyNode(scene);
return;
}
// find collection of tagged nodes
bool GetShape( const std::string& id, std::vector< SGNODE* >*& listPtr )
{
listPtr = NULL;
NODEMAP::iterator item;
item = shapes.find( id );
if( item == shapes.end() )
return false;
listPtr = &item->second;
return true;
}
// find collection of tagged nodes
SGNODE* GetFace( const std::string& id )
{
FACEMAP::iterator item;
item = faces.find( id );
if( item == faces.end() )
return NULL;
return item->second;
}
// return color if found; if not found, create SGAPPEARANCE
SGNODE* GetColor( Quantity_Color* colorObj )
{
if( NULL == colorObj )
{
if( defaultColor )
return defaultColor;
IFSG_APPEARANCE app( true );
app.SetShininess( 0.05 );
app.SetSpecular( 0.04, 0.04, 0.04 );
app.SetAmbient( 0.1, 0.1, 0.1 );
app.SetDiffuse( 0.6,0.6, 0.6 );
defaultColor = app.GetRawPtr();
return defaultColor;
}
Standard_Real id = colorObj->Distance( refColor );
std::map< Standard_Real, SGNODE* >::iterator item;
item = colors.find( id );
if( item != colors.end() )
return item->second;
IFSG_APPEARANCE app( true );
app.SetShininess( 0.1 );
app.SetSpecular( 0.12, 0.12, 0.12 );
app.SetAmbient( 0.1, 0.1, 0.1 );
app.SetDiffuse( colorObj->Red(), colorObj->Green(), colorObj->Blue() );
colors.insert( std::pair< Standard_Real, SGNODE* >( id, app.GetRawPtr() ) );
return app.GetRawPtr();
}
};
enum FormatType
{
FMT_NONE = 0,
FMT_STEP = 1,
FMT_IGES = 2
};
FormatType fileType( const char* aFileName )
{
wxString fname( wxString::FromUTF8Unchecked( aFileName ) );
wxFileInputStream ifile( fname );
if( !ifile.IsOk() )
return FMT_NONE;
char iline[82];
memset( iline, 0, 82 );
ifile.Read( iline, 82 );
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;
}
void getTag( TDF_Label& label, std::string& aTag )
{
if( label.IsNull() )
return;
std::string rtag; // tag in reverse
aTag.clear();
int id = label.Tag();
std::ostringstream ostr;
ostr << id;
rtag = ostr.str();
ostr.str( "" );
ostr.clear();
TDF_Label nlab = label.Father();
while( !nlab.IsNull() )
{
rtag.append( 1, ':' );
id = nlab.Tag();
ostr << id;
rtag.append( ostr.str() );
ostr.str( "" );
ostr.clear();
nlab = nlab.Father();
};
std::string::reverse_iterator bI = rtag.rbegin();
std::string::reverse_iterator eI = rtag.rend();
while( bI != eI )
{
aTag.append( 1, *bI );
++bI;
}
return;
}
bool getColor( DATA& data, TDF_Label label, Quantity_Color& color )
{
while( true )
{
if( data.m_color->GetColor( label, XCAFDoc_ColorGen, color ) )
return true;
else if( data.m_color->GetColor( label, XCAFDoc_ColorSurf, color ) )
return true;
else if( data.m_color->GetColor( label, XCAFDoc_ColorCurv, color ) )
return true;
label = label.Father();
if( label.IsNull() )
break;
};
return false;
}
void addItems( SGNODE* parent, std::vector< SGNODE* >* lp )
{
if( NULL == lp )
return;
std::vector< SGNODE* >::iterator sL = lp->begin();
std::vector< SGNODE* >::iterator eL = lp->end();
SGNODE* item;
while( sL != eL )
{
item = *sL;
if( NULL == S3D::GetSGNodeParent( item ) )
S3D::AddSGNodeChild( parent, item );
else
S3D::AddSGNodeRef( parent, item );
++sL;
}
return;
}
bool readIGES( Handle(TDocStd_Document)& m_doc, const char* fname )
{
IGESCAFControl_Reader reader;
IFSelect_ReturnStatus stat = reader.ReadFile( fname );
reader.PrintCheckLoad( Standard_False, IFSelect_ItemsByEntity );
if( stat != IFSelect_RetDone )
return false;
// Enable file-defined shape precision
if( !Interface_Static::SetIVal( "read.precision.mode", 0 ) )
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( m_doc ) )
return false;
// are there any shapes to translate?
if( reader.NbShapes() < 1 )
return false;
return true;
}
bool readSTEP( Handle(TDocStd_Document)& m_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(false); // don't use label names
reader.SetLayerMode(false); // ignore LAYER data
if ( !reader.Transfer( m_doc ) )
{
m_doc->Close();
return false;
}
// are there any shapes to translate?
if( reader.NbRootsForTransfer() < 1 )
return false;
return true;
}
SCENEGRAPH* LoadModel( char const* filename )
{
DATA data;
Handle(XCAFApp_Application) m_app = XCAFApp_Application::GetApplication();
m_app->NewDocument( "MDTV-XCAF", data.m_doc );
FormatType modelFmt = fileType( filename );
switch( modelFmt )
{
case FMT_IGES:
data.renderBoth = true;
if( !readIGES( data.m_doc, filename ) )
return NULL;
break;
case FMT_STEP:
if( !readSTEP( data.m_doc, filename ) )
return NULL;
break;
default:
return NULL;
break;
}
data.m_assy = XCAFDoc_DocumentTool::ShapeTool( data.m_doc->Main() );
data.m_color = XCAFDoc_DocumentTool::ColorTool( data.m_doc->Main() );
// retrieve all free shapes
TDF_LabelSequence frshapes;
data.m_assy->GetFreeShapes( frshapes );
int nshapes = frshapes.Length();
int id = 1;
bool ret = false;
// create the top level SG node
IFSG_TRANSFORM topNode( true );
data.scene = topNode.GetRawPtr();
while( id <= nshapes )
{
TopoDS_Shape shape = data.m_assy->GetShape( frshapes.Value(id) );
if ( !shape.IsNull() && processNode( shape, data, data.scene, NULL ) )
ret = true;
++id;
};
if( !ret )
return NULL;
SCENEGRAPH* scene = (SCENEGRAPH*)data.scene;
// DEBUG: WRITE OUT VRML2 FILE TO CONFIRM STRUCTURE
#if ( defined( DEBUG_OCE ) && DEBUG_OCE > 3 )
if( data.scene )
{
wxFileName fn( wxString::FromUTF8Unchecked( filename ) );
wxString output;
if( FMT_STEP == modelFmt )
output = wxT( "_step-" );
else
output = wxT( "_iges-" );
output.append( fn.GetName() );
output.append( wxT(".wrl") );
S3D::WriteVRML( output.ToUTF8(), true, data.scene, true, true );
}
#endif
// set to NULL to prevent automatic destruction of the scene data
data.scene = NULL;
return scene;
}
bool processShell( const TopoDS_Shape& shape, DATA& data, SGNODE* parent,
std::vector< SGNODE* >* items, Quantity_Color* color )
{
TopoDS_Iterator it;
bool ret = false;
for( it.Initialize( shape, false, false ); it.More(); it.Next() )
{
const TopoDS_Face& face = TopoDS::Face( it.Value() );
if( processFace( face, data, parent, items, color ) )
ret = true;
}
return ret;
}
bool processSolid( const TopoDS_Shape& shape, DATA& data, SGNODE* parent,
std::vector< SGNODE* >* items )
{
TDF_Label label;
data.hasSolid = true;
std::string partID;
Quantity_Color col;
Quantity_Color* lcolor = NULL;
// Search the whole model first to make sure something exists (may or may not have color)
if( !data.m_assy->Search( shape, label ) )
{
static int i = 0;
std::ostringstream ostr;
ostr << "KMISC_" << i++;
partID = ostr.str();
}
else
{
bool found_color = false;
if( getColor( data, label, col ) )
{
found_color = true;
lcolor = &col;
}
// If the top-level label doesn't have the color information, search components
if( !found_color )
{
if( data.m_assy->Search( shape, label, Standard_False, Standard_True, Standard_True ) &&
getColor( data, label, col ) )
{
found_color = true;
lcolor = &col;
}
}
// If the components do not have color information, search all components without location
if( !found_color )
{
if( data.m_assy->Search( shape, label, Standard_False, Standard_False, Standard_True ) &&
getColor( data, label, col ) )
{
found_color = true;
lcolor = &col;
}
}
// Our last chance to find the color looks for color as a subshape of top-level simple shapes
if( !found_color )
{
if( data.m_assy->Search( shape, label, Standard_False, Standard_False, Standard_False ) &&
getColor( data, label, col ) )
{
found_color = true;
lcolor = &col;
}
}
getTag( label, partID );
}
TopoDS_Iterator it;
IFSG_TRANSFORM childNode( parent );
SGNODE* pptr = childNode.GetRawPtr();
TopLoc_Location loc = shape.Location();
bool ret = false;
if( !loc.IsIdentity() )
{
gp_Trsf T = loc.Transformation();
gp_XYZ coord = T.TranslationPart();
childNode.SetTranslation( SGPOINT( coord.X(), coord.Y(), coord.Z() ) );
gp_XYZ axis;
Standard_Real angle;
if( T.GetRotation( axis, angle ) )
childNode.SetRotation( SGVECTOR( axis.X(), axis.Y(), axis.Z() ), angle );
}
std::vector< SGNODE* >* component = NULL;
if( !partID.empty() )
data.GetShape( partID, component );
if( component )
{
addItems( pptr, component );
if( NULL != items )
items->push_back( pptr );
}
// instantiate the solid
std::vector< SGNODE* > itemList;
for( it.Initialize( shape, false, false ); it.More(); it.Next() )
{
const TopoDS_Shape& subShape = it.Value();
if( processShell( subShape, data, pptr, &itemList, lcolor ) )
ret = true;
}
if( !ret )
childNode.Destroy();
else if( NULL != items )
items->push_back( pptr );
return ret;
}
bool processComp( const TopoDS_Shape& shape, DATA& data, SGNODE* parent,
std::vector< SGNODE* >* items )
{
TopoDS_Iterator it;
IFSG_TRANSFORM childNode( parent );
SGNODE* pptr = childNode.GetRawPtr();
TopLoc_Location loc = shape.Location();
bool ret = false;
if( !loc.IsIdentity() )
{
gp_Trsf T = loc.Transformation();
gp_XYZ coord = T.TranslationPart();
childNode.SetTranslation( SGPOINT( coord.X(), coord.Y(), coord.Z() ) );
gp_XYZ axis;
Standard_Real angle;
if( T.GetRotation( axis, angle ) )
childNode.SetRotation( SGVECTOR( axis.X(), axis.Y(), axis.Z() ), angle );
}
for( it.Initialize( shape, false, false ); it.More(); it.Next() )
{
const TopoDS_Shape& subShape = it.Value();
TopAbs_ShapeEnum stype = subShape.ShapeType();
data.hasSolid = false;
switch( stype )
{
case TopAbs_COMPOUND:
case TopAbs_COMPSOLID:
if( processComp( subShape, data, pptr, items ) )
ret = true;
break;
case TopAbs_SOLID:
if( processSolid( subShape, data, pptr, items ) )
ret = true;
break;
case TopAbs_SHELL:
if( processShell( subShape, data, pptr, items, NULL ) )
ret = true;
break;
case TopAbs_FACE:
if( processFace( TopoDS::Face( subShape ), data, pptr, items, NULL ) )
ret = true;
break;
default:
break;
}
}
if( !ret )
childNode.Destroy();
else if( NULL != items )
items->push_back( pptr );
return ret;
}
bool processNode( const TopoDS_Shape& shape, DATA& data, SGNODE* parent,
std::vector< SGNODE* >* items )
{
TopAbs_ShapeEnum stype = shape.ShapeType();
bool ret = false;
data.hasSolid = false;
switch( stype )
{
case TopAbs_COMPOUND:
case TopAbs_COMPSOLID:
if( processComp( shape, data, parent, items ) )
ret = true;
break;
case TopAbs_SOLID:
if( processSolid( shape, data, parent, items ) )
ret = true;
break;
case TopAbs_SHELL:
if( processShell( shape, data, parent, items, NULL ) )
ret = true;
break;
case TopAbs_FACE:
if( processFace( TopoDS::Face( shape ), data, parent, items, NULL ) )
ret = true;
break;
default:
break;
}
return ret;
}
bool processFace( const TopoDS_Face& face, DATA& data, SGNODE* parent,
std::vector< SGNODE* >* items, Quantity_Color* color )
{
if( Standard_True == face.IsNull() )
return false;
bool reverse = ( face.Orientation() == TopAbs_REVERSED );
SGNODE* ashape = NULL;
std::string partID;
TDF_Label label;
bool useBothSides = false;
// for IGES renderBoth = TRUE; for STEP if a shell or face is not a descendant
// of a SOLID then hasSolid = false and we must render both sides
if( data.renderBoth || !data.hasSolid )
useBothSides = true;
if( data.m_assy->FindShape( face, label, Standard_False ) )
getTag( label, partID );
if( !partID.empty() )
ashape = data.GetFace( partID );
if( ashape )
{
if( NULL == S3D::GetSGNodeParent( ashape ) )
S3D::AddSGNodeChild( parent, ashape );
else
S3D::AddSGNodeRef( parent, ashape );
if( NULL != items )
items->push_back( ashape );
if( useBothSides )
{
std::string id2 = partID;
id2.append( "b" );
SGNODE* shapeB = data.GetFace( id2 );
if( NULL == S3D::GetSGNodeParent( shapeB ) )
S3D::AddSGNodeChild( parent, shapeB );
else
S3D::AddSGNodeRef( parent, shapeB );
if( NULL != items )
items->push_back( shapeB );
}
return true;
}
TopLoc_Location loc;
Standard_Boolean isTessellate (Standard_False);
Handle(Poly_Triangulation) triangulation = BRep_Tool::Triangulation( face, loc );
if( triangulation.IsNull() || triangulation->Deflection() > USER_PREC + Precision::Confusion() )
isTessellate = Standard_True;
if (isTessellate)
{
BRepMesh_IncrementalMesh IM(face, USER_PREC, Standard_False, USER_ANGLE );
triangulation = BRep_Tool::Triangulation( face, loc );
}
if( triangulation.IsNull() == Standard_True )
return false;
Quantity_Color lcolor;
// check for a face color; this has precedence over SOLID colors
do
{
TDF_Label L;
if( data.m_color->ShapeTool()->Search( face, L ) )
{
if( data.m_color->GetColor( L, XCAFDoc_ColorGen, lcolor )
|| data.m_color->GetColor( L, XCAFDoc_ColorCurv, lcolor )
|| data.m_color->GetColor( L, XCAFDoc_ColorSurf, lcolor ) )
color = &lcolor;
}
} while( 0 );
SGNODE* ocolor = data.GetColor( color );
// create a SHAPE and attach the color and data,
// then attach the shape to the parent and return TRUE
IFSG_SHAPE vshape( true );
IFSG_FACESET vface( vshape );
IFSG_COORDS vcoords( vface );
IFSG_COORDINDEX coordIdx( vface );
if( NULL == S3D::GetSGNodeParent( ocolor ) )
S3D::AddSGNodeChild( vshape.GetRawPtr(), ocolor );
else
S3D::AddSGNodeRef( vshape.GetRawPtr(), ocolor );
const TColgp_Array1OfPnt& arrPolyNodes = triangulation->Nodes();
const Poly_Array1OfTriangle& arrTriangles = triangulation->Triangles();
std::vector< SGPOINT > vertices;
std::vector< int > indices;
std::vector< int > indices2;
gp_Trsf tx;
for(int i = 1; i <= triangulation->NbNodes(); i++)
{
gp_XYZ v( arrPolyNodes(i).Coord() );
vertices.push_back( SGPOINT( v.X(), v.Y(), v.Z() ) );
}
for(int i = 1; i <= triangulation->NbTriangles(); i++)
{
int a, b, c;
arrTriangles( i ).Get( a, b, c );
a--;
if( reverse )
{
int tmp = b - 1;
b = c - 1;
c = tmp;
} else {
b--;
c--;
}
indices.push_back( a );
indices.push_back( b );
indices.push_back( c );
if( useBothSides )
{
indices2.push_back( b );
indices2.push_back( a );
indices2.push_back( c );
}
}
vcoords.SetCoordsList( vertices.size(), &vertices[0] );
coordIdx.SetIndices( indices.size(), &indices[0] );
vface.CalcNormals( NULL );
vshape.SetParent( parent );
if( !partID.empty() )
data.faces.insert( std::pair< std::string,
SGNODE* >( partID, vshape.GetRawPtr() ) );
// The outer surface of an IGES model is indeterminate so
// we must render both sides of a surface.
if( useBothSides )
{
std::string id2 = partID;
id2.append( "b" );
IFSG_SHAPE vshape2( true );
IFSG_FACESET vface2( vshape2 );
IFSG_COORDS vcoords2( vface2 );
IFSG_COORDINDEX coordIdx2( vface2 );
S3D::AddSGNodeRef( vshape2.GetRawPtr(), ocolor );
vcoords2.SetCoordsList( vertices.size(), &vertices[0] );
coordIdx2.SetIndices( indices2.size(), &indices2[0] );
vface2.CalcNormals( NULL );
vshape2.SetParent( parent );
if( !partID.empty() )
data.faces.insert( std::pair< std::string,
SGNODE* >( id2, vshape2.GetRawPtr() ) );
}
return true;
}
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