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create/src/Mod/Part/App/PartFeature.cpp

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/***************************************************************************
* Copyright (c) 2002 Jürgen Riegel <juergen.riegel@web.de> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
# include <sstream>
# include <gp_Trsf.hxx>
# include <gp_Ax1.hxx>
# include <BRepBuilderAPI_MakeShape.hxx>
# include <BRepAlgoAPI_Fuse.hxx>
# include <BRepAlgoAPI_Common.hxx>
# include <TopTools_ListIteratorOfListOfShape.hxx>
# include <TopExp.hxx>
# include <TopExp_Explorer.hxx>
# include <TopTools_IndexedMapOfShape.hxx>
# include <Standard_Failure.hxx>
# include <Standard_Version.hxx>
# include <TopoDS_Face.hxx>
# include <gp_Dir.hxx>
# include <gp_Pln.hxx> // for Precision::Confusion()
# include <Bnd_Box.hxx>
# include <BRepBndLib.hxx>
# include <BRepExtrema_DistShapeShape.hxx>
# include <BRepAdaptor_Curve.hxx>
# include <TopoDS.hxx>
# include <GProp_GProps.hxx>
# include <BRepGProp.hxx>
# include <gce_MakeLin.hxx>
# include <BRepIntCurveSurface_Inter.hxx>
# include <IntCurveSurface_IntersectionPoint.hxx>
# include <gce_MakeDir.hxx>
#endif
#include <boost/algorithm/string/predicate.hpp>
#include <boost/bind.hpp>
#include <Base/Console.h>
#include <Base/Writer.h>
#include <Base/Reader.h>
#include <Base/Exception.h>
#include <Base/FileInfo.h>
#include <Base/Stream.h>
#include <Base/Placement.h>
#include <Base/Rotation.h>
#include <App/Application.h>
#include <App/FeaturePythonPyImp.h>
#include <App/Document.h>
#include <App/Link.h>
#include <App/GeoFeatureGroupExtension.h>
#include "PartPyCXX.h"
#include "PartFeature.h"
#include "PartFeaturePy.h"
#include "TopoShapePy.h"
using namespace Part;
FC_LOG_LEVEL_INIT("Part",true,true)
PROPERTY_SOURCE(Part::Feature, App::GeoFeature)
Feature::Feature(void)
{
ADD_PROPERTY(Shape, (TopoDS_Shape()));
}
Feature::~Feature()
{
}
short Feature::mustExecute(void) const
{
return GeoFeature::mustExecute();
}
App::DocumentObjectExecReturn *Feature::recompute(void)
{
try {
return App::GeoFeature::recompute();
}
catch (Standard_Failure& e) {
App::DocumentObjectExecReturn* ret = new App::DocumentObjectExecReturn(e.GetMessageString());
if (ret->Why.empty()) ret->Why = "Unknown OCC exception";
return ret;
}
}
App::DocumentObjectExecReturn *Feature::execute(void)
{
this->Shape.touch();
return GeoFeature::execute();
}
PyObject *Feature::getPyObject(void)
{
if (PythonObject.is(Py::_None())){
// ref counter is set to 1
PythonObject = Py::Object(new PartFeaturePy(this),true);
}
return Py::new_reference_to(PythonObject);
}
App::DocumentObject *Feature::getSubObject(const char *subname,
PyObject **pyObj, Base::Matrix4D *pmat, bool transform, int depth) const
{
// having '.' inside subname means it is referencing some children object,
// instead of any sub-element from ourself
if(subname && !Data::ComplexGeoData::isMappedElement(subname) && strchr(subname,'.'))
return App::DocumentObject::getSubObject(subname,pyObj,pmat,transform,depth);
Base::Matrix4D _mat;
auto &mat = pmat?*pmat:_mat;
if(transform)
mat *= Placement.getValue().toMatrix();
if(!pyObj) {
#if 0
if(subname==0 || *subname==0 || Shape.getShape().hasSubShape(subname))
return const_cast<Feature*>(this);
return nullptr;
#else
// TopoShape::hasSubShape is kind of slow, let's cut outself some slack here.
return const_cast<Feature*>(this);
#endif
}
try {
TopoShape ts(Shape.getShape());
bool doTransform = mat!=ts.getTransform();
if(doTransform)
ts.setShape(ts.getShape().Located(TopLoc_Location()));
if(subname && *subname && !ts.isNull())
ts = ts.getSubShape(subname);
if(doTransform && !ts.isNull()) {
static int sCopy = -1;
if(sCopy<0) {
ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath(
"User parameter:BaseApp/Preferences/Mod/Part/General");
sCopy = hGrp->GetBool("CopySubShape",false)?1:0;
}
bool copy = sCopy?true:false;
if(!copy) {
// Work around OCC bug on transforming circular edge with an
// offset surface. The bug probably affect other shape type,
// too.
TopExp_Explorer exp(ts.getShape(),TopAbs_EDGE);
if(exp.More()) {
auto edge = TopoDS::Edge(exp.Current());
exp.Next();
if(!exp.More()) {
BRepAdaptor_Curve curve(edge);
copy = curve.GetType() == GeomAbs_Circle;
}
}
}
ts.transformShape(mat,copy,true);
}
*pyObj = Py::new_reference_to(shape2pyshape(ts));
return const_cast<Feature*>(this);
}
catch(Standard_Failure &e) {
// FIXME: Do not handle the exception here because it leads to a flood of irrelevant and
// annoying error messages.
// For example: https://forum.freecadweb.org/viewtopic.php?f=19&t=42216
// Instead either raise a sub-class of Base::Exception and let it handle by the calling
// instance or do simply nothing. For now the error message is degraded to a log message.
std::ostringstream str;
Standard_CString msg = e.GetMessageString();
#if OCC_VERSION_HEX >= 0x070000
// Avoid name mangling
str << e.DynamicType()->get_type_name() << " ";
#else
str << typeid(e).name() << " ";
#endif
if (msg) {str << msg;}
else {str << "No OCCT Exception Message";}
str << ": " << getFullName();
if (subname)
str << '.' << subname;
FC_LOG(str.str());
return 0;
}
}
TopoDS_Shape Feature::getShape(const App::DocumentObject *obj, const char *subname,
bool needSubElement, Base::Matrix4D *pmat, App::DocumentObject **powner,
bool resolveLink, bool transform)
{
return getTopoShape(obj,subname,needSubElement,pmat,powner,resolveLink,transform,true).getShape();
}
struct ShapeCache {
std::unordered_map<const App::Document*,
std::map<std::pair<const App::DocumentObject*, std::string> ,TopoShape> > cache;
bool inited = false;
void init() {
if(inited)
return;
inited = true;
App::GetApplication().signalDeleteDocument.connect(
boost::bind(&ShapeCache::slotDeleteDocument, this, _1));
App::GetApplication().signalDeletedObject.connect(
boost::bind(&ShapeCache::slotClear, this, _1));
App::GetApplication().signalChangedObject.connect(
boost::bind(&ShapeCache::slotChanged, this, _1,_2));
}
void slotDeleteDocument(const App::Document &doc) {
cache.erase(&doc);
}
void slotChanged(const App::DocumentObject &obj, const App::Property &prop) {
const char *propName = prop.getName();
if(!propName)
return;
if(strcmp(propName,"Shape")==0
|| strcmp(propName,"Group")==0
|| strstr(propName,"Touched")!=0)
slotClear(obj);
}
void slotClear(const App::DocumentObject &obj) {
auto it = cache.find(obj.getDocument());
if(it==cache.end())
return;
auto &map = it->second;
for(auto it2=map.lower_bound(std::make_pair(&obj,std::string()));
it2!=map.end() && it2->first.first==&obj;)
{
it2 = map.erase(it2);
}
}
bool getShape(const App::DocumentObject *obj, TopoShape &shape, const char *subname=0) {
init();
auto &entry = cache[obj->getDocument()];
if(!subname) subname = "";
auto it = entry.find(std::make_pair(obj,std::string(subname)));
if(it!=entry.end()) {
shape = it->second;
return !shape.isNull();
}
return false;
}
void setShape(const App::DocumentObject *obj, const TopoShape &shape, const char *subname=0) {
init();
if(!subname) subname = "";
cache[obj->getDocument()][std::make_pair(obj,std::string(subname))] = shape;
}
};
static ShapeCache _ShapeCache;
void Feature::clearShapeCache() {
_ShapeCache.cache.clear();
}
static TopoShape _getTopoShape(const App::DocumentObject *obj, const char *subname,
bool needSubElement, Base::Matrix4D *pmat, App::DocumentObject **powner,
bool resolveLink, bool noElementMap, std::vector<App::DocumentObject*> &linkStack)
{
TopoShape shape;
if(!obj) return shape;
PyObject *pyobj = 0;
Base::Matrix4D mat;
if(powner) *powner = 0;
std::string _subname;
auto subelement = Data::ComplexGeoData::findElementName(subname);
if(!needSubElement && subname) {
// strip out element name if not needed
if(subelement && *subelement) {
_subname = std::string(subname,subelement);
subname = _subname.c_str();
}
}
if(_ShapeCache.getShape(obj,shape,subname)) {
if(noElementMap) {
// shape.resetElementMap();
// shape.Tag = 0;
// shape.Hasher.reset();
}
}
App::DocumentObject *linked = 0;
App::DocumentObject *owner = 0;
Base::Matrix4D linkMat;
// App::StringHasherRef hasher;
// long tag;
{
Base::PyGILStateLocker lock;
owner = obj->getSubObject(subname,shape.isNull()?&pyobj:0,&mat,false);
if(!owner)
return shape;
// tag = owner->getID();
// hasher = owner->getDocument()->getStringHasher();
linked = owner->getLinkedObject(true,&linkMat,false);
if(pmat) {
if(resolveLink && obj!=owner)
*pmat = mat * linkMat;
else
*pmat = mat;
}
if(!linked)
linked = owner;
if(powner)
*powner = resolveLink?linked:owner;
if(!shape.isNull())
return shape;
if(pyobj && PyObject_TypeCheck(pyobj,&TopoShapePy::Type)) {
shape = *static_cast<TopoShapePy*>(pyobj)->getTopoShapePtr();
if(!shape.isNull()) {
if(obj->getDocument() != linked->getDocument())
_ShapeCache.setShape(obj,shape,subname);
if(noElementMap) {
// shape.resetElementMap();
// shape.Tag = 0;
// shape.Hasher.reset();
}
Py_DECREF(pyobj);
return shape;
}
}
Py_XDECREF(pyobj);
}
// nothing can be done if there is sub-element references
if(needSubElement && subelement && *subelement)
return shape;
bool scaled = false;
if(obj!=owner) {
if(_ShapeCache.getShape(owner,shape)) {
auto scaled = shape.transformShape(mat,false,true);
if(owner->getDocument()!=obj->getDocument()) {
// shape.reTagElementMap(obj->getID(),obj->getDocument()->getStringHasher());
_ShapeCache.setShape(obj,shape,subname);
} else if(scaled)
_ShapeCache.setShape(obj,shape,subname);
}
if(!shape.isNull()) {
if(noElementMap) {
// shape.resetElementMap();
// shape.Tag = 0;
// shape.Hasher.reset();
}
return shape;
}
}
auto link = owner->getExtensionByType<App::LinkBaseExtension>(true);
if(owner!=linked
&& (!link || (!link->_ChildCache.getSize()
&& link->getSubElements().size()<=1)))
{
// if there is a linked object, and there is no child cache (which is used
// for special handling of plain group), obtain shape from the linked object
shape = Feature::getTopoShape(linked,0,false,0,0,false,false);
if(shape.isNull())
return shape;
if(owner==obj)
shape.transformShape(mat*linkMat,false,true);
else
shape.transformShape(linkMat,false,true);
// shape.reTagElementMap(tag,hasher);
} else {
if(link || owner->getExtensionByType<App::GeoFeatureGroupExtension>(true))
linkStack.push_back(owner);
// Construct a compound of sub objects
std::vector<TopoShape> shapes;
// Acceleration for link array. Unlike non-array link, a link array does
// not return the linked object when calling getLinkedObject().
// Therefore, it should be handled here.
TopoShape baseShape;
std::string op;
if(link && link->getElementCountValue()) {
linked = link->getTrueLinkedObject(false);
if(linked && linked!=owner) {
baseShape = Feature::getTopoShape(linked,0,false,0,0,false,false);
// if(!link->getShowElementValue())
// baseShape.reTagElementMap(owner->getID(),owner->getDocument()->getStringHasher());
}
}
for(auto &sub : owner->getSubObjects()) {
if(sub.empty()) continue;
int visible;
std::string childName;
App::DocumentObject *parent=0;
Base::Matrix4D mat;
App::DocumentObject *subObj=0;
if(sub.find('.')==std::string::npos)
visible = 1;
else {
subObj = owner->resolve(sub.c_str(), &parent, &childName,0,0,&mat,false);
if(!parent || !subObj)
continue;
if(linkStack.size()
&& parent->getExtensionByType<App::GroupExtension>(true,false))
{
visible = linkStack.back()->isElementVisible(childName.c_str());
}else
visible = parent->isElementVisible(childName.c_str());
}
if(visible==0)
continue;
TopoShape shape;
if(!subObj || baseShape.isNull()) {
shape = _getTopoShape(owner,sub.c_str(),true,0,&subObj,false,false,linkStack);
if(shape.isNull())
continue;
if(visible<0 && subObj && !subObj->Visibility.getValue())
continue;
}else{
if(link && !link->getShowElementValue())
shape = baseShape.makETransform(mat,(TopoShape::indexPostfix()+childName).c_str());
else {
shape = baseShape.makETransform(mat);
// shape.reTagElementMap(subObj->getID(),subObj->getDocument()->getStringHasher());
}
}
shapes.push_back(shape);
}
if(linkStack.size() && linkStack.back()==owner)
linkStack.pop_back();
if(shapes.empty())
return shape;
// shape.Tag = tag;
// shape.Hasher = hasher;
shape.makECompound(shapes);
}
_ShapeCache.setShape(owner,shape);
if(owner!=obj) {
scaled = shape.transformShape(mat,false,true);
if(owner->getDocument()!=obj->getDocument()) {
// shape.reTagElementMap(obj->getID(),obj->getDocument()->getStringHasher());
_ShapeCache.setShape(obj,shape,subname);
}else if(scaled)
_ShapeCache.setShape(obj,shape,subname);
}
if(noElementMap) {
// shape.resetElementMap();
// shape.Tag = 0;
// shape.Hasher.reset();
}
return shape;
}
TopoShape Feature::getTopoShape(const App::DocumentObject *obj, const char *subname,
bool needSubElement, Base::Matrix4D *pmat, App::DocumentObject **powner,
bool resolveLink, bool transform, bool noElementMap)
{
if(!obj || !obj->getNameInDocument())
return TopoShape();
std::vector<App::DocumentObject*> linkStack;
// NOTE! _getTopoShape() always return shape without top level
// transformation for easy shape caching, i.e. with `transform` set
// to false. So we manually apply the top level transform if asked.
Base::Matrix4D mat;
auto shape = _getTopoShape(obj, subname, needSubElement, &mat,
powner, resolveLink, noElementMap, linkStack);
Base::Matrix4D topMat;
if(pmat || transform) {
// Obtain top level transformation
if(pmat)
topMat = *pmat;
if(transform)
obj->getSubObject(0,0,&topMat);
// Apply the top level transformation
if(!shape.isNull())
shape.transformShape(topMat,false,true);
if(pmat)
*pmat = topMat * mat;
}
return shape;
}
App::DocumentObject *Feature::getShapeOwner(const App::DocumentObject *obj, const char *subname)
{
if(!obj) return 0;
auto owner = obj->getSubObject(subname);
if(owner) {
auto linked = owner->getLinkedObject(true);
if(linked)
owner = linked;
}
return owner;
}
void Feature::onChanged(const App::Property* prop)
{
// if the placement has changed apply the change to the point data as well
if (prop == &this->Placement) {
TopoShape& shape = const_cast<TopoShape&>(this->Shape.getShape());
shape.setTransform(this->Placement.getValue().toMatrix());
}
// if the point data has changed check and adjust the transformation as well
else if (prop == &this->Shape) {
if (this->isRecomputing()) {
TopoShape& shape = const_cast<TopoShape&>(this->Shape.getShape());
shape.setTransform(this->Placement.getValue().toMatrix());
}
else {
Base::Placement p;
// shape must not be null to override the placement
if (!this->Shape.getValue().IsNull()) {
p.fromMatrix(this->Shape.getShape().getTransform());
if (p != this->Placement.getValue())
this->Placement.setValue(p);
}
}
}
GeoFeature::onChanged(prop);
}
TopLoc_Location Feature::getLocation() const
{
Base::Placement pl = this->Placement.getValue();
Base::Rotation rot(pl.getRotation());
Base::Vector3d axis;
double angle;
rot.getValue(axis, angle);
gp_Trsf trf;
trf.SetRotation(gp_Ax1(gp_Pnt(), gp_Dir(axis.x, axis.y, axis.z)), angle);
trf.SetTranslationPart(gp_Vec(pl.getPosition().x,pl.getPosition().y,pl.getPosition().z));
return TopLoc_Location(trf);
}
ShapeHistory Feature::buildHistory(BRepBuilderAPI_MakeShape& mkShape, TopAbs_ShapeEnum type,
const TopoDS_Shape& newS, const TopoDS_Shape& oldS)
{
ShapeHistory history;
history.type = type;
TopTools_IndexedMapOfShape newM, oldM;
TopExp::MapShapes(newS, type, newM); // map containing all old objects of type "type"
TopExp::MapShapes(oldS, type, oldM); // map containing all new objects of type "type"
// Look at all objects in the old shape and try to find the modified object in the new shape
for (int i=1; i<=oldM.Extent(); i++) {
bool found = false;
TopTools_ListIteratorOfListOfShape it;
// Find all new objects that are a modification of the old object (e.g. a face was resized)
for (it.Initialize(mkShape.Modified(oldM(i))); it.More(); it.Next()) {
found = true;
for (int j=1; j<=newM.Extent(); j++) { // one old object might create several new ones!
if (newM(j).IsPartner(it.Value())) {
history.shapeMap[i-1].push_back(j-1); // adjust indices to start at zero
break;
}
}
}
// Find all new objects that were generated from an old object (e.g. a face generated from an edge)
for (it.Initialize(mkShape.Generated(oldM(i))); it.More(); it.Next()) {
found = true;
for (int j=1; j<=newM.Extent(); j++) {
if (newM(j).IsPartner(it.Value())) {
history.shapeMap[i-1].push_back(j-1);
break;
}
}
}
if (!found) {
// Find all old objects that don't exist any more (e.g. a face was completely cut away)
if (mkShape.IsDeleted(oldM(i))) {
history.shapeMap[i-1] = std::vector<int>();
}
else {
// Mop up the rest (will this ever be reached?)
for (int j=1; j<=newM.Extent(); j++) {
if (newM(j).IsPartner(oldM(i))) {
history.shapeMap[i-1].push_back(j-1);
break;
}
}
}
}
}
return history;
}
ShapeHistory Feature::joinHistory(const ShapeHistory& oldH, const ShapeHistory& newH)
{
ShapeHistory join;
join.type = oldH.type;
for (ShapeHistory::MapList::const_iterator it = oldH.shapeMap.begin(); it != oldH.shapeMap.end(); ++it) {
int old_shape_index = it->first;
if (it->second.empty())
join.shapeMap[old_shape_index] = ShapeHistory::List();
for (ShapeHistory::List::const_iterator jt = it->second.begin(); jt != it->second.end(); ++jt) {
ShapeHistory::MapList::const_iterator kt = newH.shapeMap.find(*jt);
if (kt != newH.shapeMap.end()) {
ShapeHistory::List& ary = join.shapeMap[old_shape_index];
ary.insert(ary.end(), kt->second.begin(), kt->second.end());
}
}
}
return join;
}
/// returns the type name of the ViewProvider
const char* Feature::getViewProviderName(void) const {
return "PartGui::ViewProviderPart";
}
const App::PropertyComplexGeoData* Feature::getPropertyOfGeometry() const
{
return &Shape;
}
// ---------------------------------------------------------
PROPERTY_SOURCE(Part::FilletBase, Part::Feature)
FilletBase::FilletBase()
{
ADD_PROPERTY(Base,(0));
ADD_PROPERTY(Edges,(0,0,0));
Edges.setSize(0);
}
short FilletBase::mustExecute() const
{
if (Base.isTouched() || Edges.isTouched())
return 1;
return 0;
}
// ---------------------------------------------------------
PROPERTY_SOURCE(Part::FeatureExt, Part::Feature)
namespace App {
/// @cond DOXERR
PROPERTY_SOURCE_TEMPLATE(Part::FeaturePython, Part::Feature)
template<> const char* Part::FeaturePython::getViewProviderName(void) const {
return "PartGui::ViewProviderPython";
}
template<> PyObject* Part::FeaturePython::getPyObject(void) {
if (PythonObject.is(Py::_None())) {
// ref counter is set to 1
PythonObject = Py::Object(new FeaturePythonPyT<Part::PartFeaturePy>(this),true);
}
return Py::new_reference_to(PythonObject);
}
/// @endcond
// explicit template instantiation
template class PartExport FeaturePythonT<Part::Feature>;
}
// ----------------------------------------------------------------
/*
#include <GProp_GProps.hxx>
#include <BRepGProp.hxx>
#include <gce_MakeLin.hxx>
#include <BRepIntCurveSurface_Inter.hxx>
#include <IntCurveSurface_IntersectionPoint.hxx>
#include <gce_MakeDir.hxx>
*/
std::vector<Part::cutFaces> Part::findAllFacesCutBy(
const TopoDS_Shape& shape, const TopoDS_Shape& face, const gp_Dir& dir)
{
// Find the centre of gravity of the face
GProp_GProps props;
BRepGProp::SurfaceProperties(face,props);
gp_Pnt cog = props.CentreOfMass();
// create a line through the centre of gravity
gp_Lin line = gce_MakeLin(cog, dir);
// Find intersection of line with all faces of the shape
std::vector<cutFaces> result;
BRepIntCurveSurface_Inter mkSection;
// TODO: Less precision than Confusion() should be OK?
for (mkSection.Init(shape, line, Precision::Confusion()); mkSection.More(); mkSection.Next()) {
gp_Pnt iPnt = mkSection.Pnt();
double dsq = cog.SquareDistance(iPnt);
if (dsq < Precision::Confusion())
continue; // intersection with original face
// Find out which side of the original face the intersection is on
gce_MakeDir mkDir(cog, iPnt);
if (!mkDir.IsDone())
continue; // some error (appears highly unlikely to happen, though...)
if (mkDir.Value().IsOpposite(dir, Precision::Confusion()))
continue; // wrong side of face (opposite to extrusion direction)
cutFaces newF;
newF.face = mkSection.Face();
newF.distsq = dsq;
result.push_back(newF);
}
return result;
}
bool Part::checkIntersection(const TopoDS_Shape& first, const TopoDS_Shape& second,
const bool quick, const bool touch_is_intersection) {
Bnd_Box first_bb, second_bb;
BRepBndLib::Add(first, first_bb);
first_bb.SetGap(0);
BRepBndLib::Add(second, second_bb);
second_bb.SetGap(0);
// Note: This test fails if the objects are touching one another at zero distance
// Improving reliability: If it fails sometimes when touching and touching is intersection,
// then please check further unless the user asked for a quick potentially unreliable result
if (first_bb.IsOut(second_bb) && !touch_is_intersection)
return false; // no intersection
if (quick && !first_bb.IsOut(second_bb))
return true; // assumed intersection
// Try harder
// This has been disabled because of:
// https://www.freecadweb.org/tracker/view.php?id=3065
//extrema method
/*BRepExtrema_DistShapeShape extrema(first, second);
if (!extrema.IsDone())
return true;
if (extrema.Value() > Precision::Confusion())
return false;
if (extrema.InnerSolution())
return true;
//here we should have touching shapes.
if (touch_is_intersection)
{
//non manifold condition. 1 has to be a face
for (int index = 1; index < extrema.NbSolution() + 1; ++index)
{
if (extrema.SupportTypeShape1(index) == BRepExtrema_IsInFace || extrema.SupportTypeShape2(index) == BRepExtrema_IsInFace)
return true;
}
return false;
}
else
return false;*/
//boolean method.
if (touch_is_intersection) {
// If both shapes fuse to a single solid, then they intersect
BRepAlgoAPI_Fuse mkFuse(first, second);
if (!mkFuse.IsDone())
return false;
if (mkFuse.Shape().IsNull())
return false;
// Did we get one or two solids?
TopExp_Explorer xp;
xp.Init(mkFuse.Shape(),TopAbs_SOLID);
if (xp.More()) {
// At least one solid
xp.Next();
return (xp.More() == Standard_False);
} else {
return false;
}
} else {
// If both shapes have common material, then they intersect
BRepAlgoAPI_Common mkCommon(first, second);
if (!mkCommon.IsDone())
return false;
if (mkCommon.Shape().IsNull())
return false;
// Did we get a solid?
TopExp_Explorer xp;
xp.Init(mkCommon.Shape(),TopAbs_SOLID);
return (xp.More() == Standard_True);
}
}
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