/
Area.cpp
3435 lines (3113 loc) · 118 KB
/
Area.cpp
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/****************************************************************************
* Copyright (c) 2017 Zheng, Lei (realthunder) <realthunder.dev@gmail.com>*
* *
* 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 <cfloat>
# include <boost/version.hpp>
# include <boost/config.hpp>
# if defined(BOOST_MSVC) && (BOOST_VERSION == 105500)
// for fixing issue https://svn.boost.org/trac/boost/ticket/9332
# include "boost_fix/intrusive/detail/memory_util.hpp"
# include "boost_fix/container/detail/memory_util.hpp"
# endif
# include <boost/geometry.hpp>
# include <boost/geometry/index/rtree.hpp>
# include <boost/geometry/geometries/geometries.hpp>
# include <boost/geometry/geometries/register/point.hpp>
# include <boost/range/adaptor/indexed.hpp>
# include <boost/range/adaptor/transformed.hpp>
# include <BRepLib.hxx>
# include <BRep_Builder.hxx>
# include <BRep_Tool.hxx>
# include <BRepAdaptor_Curve.hxx>
# include <BRepAdaptor_Surface.hxx>
# include <BRepBuilderAPI_FindPlane.hxx>
# include <BRepLib_FindSurface.hxx>
# include <BRepBuilderAPI_MakeEdge.hxx>
# include <BRepBuilderAPI_MakeWire.hxx>
# include <BRepBuilderAPI_MakeFace.hxx>
# include <BRepTools.hxx>
# include <BRepTools_WireExplorer.hxx>
# include <TopoDS.hxx>
# include <TopoDS_Compound.hxx>
# include <TopoDS_Solid.hxx>
# include <TopoDS_Vertex.hxx>
# include <TopExp.hxx>
# include <TopExp_Explorer.hxx>
# include <GeomAbs_JoinType.hxx>
# include <Geom_Circle.hxx>
# include <Geom_Ellipse.hxx>
# include <Geom_Line.hxx>
# include <Geom_Plane.hxx>
# include <Standard_Failure.hxx>
# include <gp_Circ.hxx>
# include <gp_GTrsf.hxx>
# include <Standard_Version.hxx>
# include <GCPnts_QuasiUniformDeflection.hxx>
# include <GCPnts_UniformDeflection.hxx>
# include <GCPnts_UniformAbscissa.hxx>
# include <BRepBndLib.hxx>
# include <BRepLib_MakeFace.hxx>
# include <Bnd_Box.hxx>
# include <BRepBuilderAPI_Copy.hxx>
# include <BRepBuilderAPI_MakeVertex.hxx>
# include <BRepExtrema_DistShapeShape.hxx>
# include <HLRBRep.hxx>
# include <HLRBRep_Algo.hxx>
# include <HLRBRep_HLRToShape.hxx>
# include <HLRAlgo_Projector.hxx>
# include <ShapeFix_ShapeTolerance.hxx>
# include <ShapeExtend_WireData.hxx>
# include <ShapeFix_Wire.hxx>
# include <ShapeAnalysis_FreeBounds.hxx>
# include <TopTools_HSequenceOfShape.hxx>
#endif
#include <Base/Exception.h>
#include <Base/Tools.h>
#include <App/Application.h>
#include <App/Document.h>
#include <Mod/Part/App/PartFeature.h>
#include <Mod/Part/App/FaceMakerBullseye.h>
#include <Mod/Part/App/CrossSection.h>
#include "Area.h"
#include "../libarea/Area.h"
//FIXME: ISO C++11 requires at least one argument for the "..." in a variadic macro
#if defined(__clang__)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
#endif
namespace bg = boost::geometry;
namespace bgi = boost::geometry::index;
typedef bgi::linear<16> RParameters;
BOOST_GEOMETRY_REGISTER_POINT_3D_GET_SET(
gp_Pnt,double,bg::cs::cartesian,X,Y,Z,SetX,SetY,SetZ)
#define AREA_LOG FC_LOG
#define AREA_WARN FC_WARN
#define AREA_ERR FC_ERR
#define AREA_TRACE FC_TRACE
#define AREA_XYZ FC_XYZ
#define AREA_XY AREA_XY
#ifdef FC_DEBUG
# define AREA_DBG FC_WARN
#else
# define AREA_DBG(...) do{}while(0)
#endif
FC_LOG_LEVEL_INIT("Path.Area",true,true)
using namespace Path;
CAreaParams::CAreaParams()
:PARAM_INIT(PARAM_FNAME,AREA_PARAMS_CAREA)
{}
AreaParams::AreaParams()
:PARAM_INIT(PARAM_FNAME,AREA_PARAMS_AREA)
{}
CAreaConfig::CAreaConfig(const CAreaParams &p, bool noFitArcs)
{
#define AREA_CONF_SAVE_AND_APPLY(_param) \
PARAM_FNAME(_param) = BOOST_PP_CAT(CArea::get_,PARAM_FARG(_param))();\
BOOST_PP_CAT(CArea::set_,PARAM_FARG(_param))(p.PARAM_FNAME(_param));
PARAM_FOREACH(AREA_CONF_SAVE_AND_APPLY,AREA_PARAMS_CAREA)
// Arc fitting is lossy. We shall reduce the number of unnecessary fit
if(noFitArcs)
CArea::set_fit_arcs(false);
}
CAreaConfig::~CAreaConfig() {
#define AREA_CONF_RESTORE(_param) \
BOOST_PP_CAT(CArea::set_,PARAM_FARG(_param))(PARAM_FNAME(_param));
PARAM_FOREACH(AREA_CONF_RESTORE,AREA_PARAMS_CAREA)
}
//////////////////////////////////////////////////////////////////////////////
TYPESYSTEM_SOURCE(Path::Area, Base::BaseClass)
bool Area::s_aborting;
Area::Area(const AreaParams *params)
:myParams(s_params)
,myHaveFace(false)
,myHaveSolid(false)
,myShapeDone(false)
,myProjecting(false)
,mySkippedShapes(0)
{
if(params)
setParams(*params);
}
Area::Area(const Area &other, bool deep_copy)
:Base::BaseClass(other)
,myShapes(other.myShapes)
,myTrsf(other.myTrsf)
,myParams(other.myParams)
,myWorkPlane(other.myWorkPlane)
,myHaveFace(other.myHaveFace)
,myHaveSolid(other.myHaveSolid)
,myShapeDone(false)
,myProjecting(false)
,mySkippedShapes(0)
{
if(!deep_copy || !other.isBuilt())
return;
if(other.myArea)
myArea.reset(new CArea(*other.myArea));
myShapePlane = other.myShapePlane;
myShape = other.myShape;
myShapeDone = other.myShapeDone;
mySections.reserve(other.mySections.size());
for(shared_ptr<Area> area:other.mySections)
mySections.push_back(make_shared<Area>(*area,true));
}
Area::~Area() {
clean();
}
void Area::setPlane(const TopoDS_Shape &shape) {
clean();
if(shape.IsNull()) {
myWorkPlane.Nullify();
return;
}
gp_Trsf trsf;
TopoDS_Shape plane = findPlane(shape,trsf);
if (plane.IsNull())
throw Base::ValueError("shape is not planar");
myWorkPlane = plane;
myTrsf = trsf;
}
static bool getShapePlane(const TopoDS_Shape &shape, gp_Pln &pln) {
if(shape.IsNull())
return false;
if(shape.ShapeType() == TopAbs_FACE) {
BRepAdaptor_Surface adapt(TopoDS::Face(shape));
if(adapt.GetType() != GeomAbs_Plane)
return false;
pln = adapt.Plane();
return true;
}
BRepLib_FindSurface finder(shape.Located(TopLoc_Location()),-1,Standard_True);
if (!finder.Found())
return false;
// TODO: It seemed that FindSurface disregard shape's
// transformation SOMETIME, so we have to transformed the found
// plane manually. Need to figure out WHY!
//
// ADD NOTE: Okay, one thing I find out that for face shape, this
// FindSurface may produce plane at the wrong position, so use
// adaptor to get the underlying surface plane directly (see
// above). It remains to be seen that if FindSurface has the same
// problem on wires
pln = GeomAdaptor_Surface(finder.Surface()).Plane();
pln.Transform(shape.Location().Transformation());
return true;
}
bool Area::isCoplanar(const TopoDS_Shape &s1, const TopoDS_Shape &s2) {
if(s1.IsNull() || s2.IsNull()) return false;
if(s1.IsSame(s2)) return true;
gp_Pln pln1,pln2;
if(!getShapePlane(s1,pln1) || !getShapePlane(s2,pln2))
return false;
return pln1.Position().IsCoplanar(pln2.Position(),Precision::Confusion(),Precision::Confusion());
}
int Area::addShape(CArea &area, const TopoDS_Shape &shape, const gp_Trsf *trsf,
double deflection, const TopoDS_Shape *plane, bool force_coplanar,
CArea *areaOpen, bool to_edges, bool reorient)
{
bool haveShape = false;
int skipped = 0;
for (TopExp_Explorer it(shape, TopAbs_FACE); it.More(); it.Next()) {
haveShape = true;
const TopoDS_Face &face = TopoDS::Face(it.Current());
if(plane && !isCoplanar(face,*plane)) {
++skipped;
if(force_coplanar) continue;
}
for (TopExp_Explorer it(face, TopAbs_WIRE); it.More(); it.Next())
addWire(area,TopoDS::Wire(it.Current()),trsf,deflection);
}
if(haveShape) return skipped;
CArea _area;
CArea _areaOpen;
for (TopExp_Explorer it(shape, TopAbs_WIRE); it.More(); it.Next()) {
haveShape = true;
const TopoDS_Wire &wire = TopoDS::Wire(it.Current());
if(plane && !isCoplanar(wire,*plane)) {
++skipped;
if(force_coplanar) continue;
}
if(BRep_Tool::IsClosed(wire))
addWire(_area,wire,trsf,deflection);
else if(to_edges) {
for (TopExp_Explorer it(wire, TopAbs_EDGE); it.More(); it.Next())
addWire(_areaOpen,BRepBuilderAPI_MakeWire(
TopoDS::Edge(it.Current())).Wire(),trsf,deflection,true);
}else
addWire(_areaOpen,wire,trsf,deflection);
}
if(!haveShape) {
for (TopExp_Explorer it(shape, TopAbs_EDGE); it.More(); it.Next()) {
if(plane && !isCoplanar(it.Current(),*plane)) {
++skipped;
if(force_coplanar) continue;
}
TopoDS_Wire wire = BRepBuilderAPI_MakeWire(
TopoDS::Edge(it.Current())).Wire();
addWire(BRep_Tool::IsClosed(wire)?_area:_areaOpen,wire,trsf,deflection);
}
}
if(reorient)
_area.Reorder();
area.m_curves.splice(area.m_curves.end(),_area.m_curves);
if(areaOpen)
areaOpen->m_curves.splice(areaOpen->m_curves.end(),_areaOpen.m_curves);
else
area.m_curves.splice(area.m_curves.end(),_areaOpen.m_curves);
return skipped;
}
static std::vector<gp_Pnt> discretize(const TopoDS_Edge &edge, double deflection) {
std::vector<gp_Pnt> ret;
BRepAdaptor_Curve curve(edge);
Standard_Real efirst,elast,first,last;
efirst = curve.FirstParameter();
elast = curve.LastParameter();
bool reversed = (edge.Orientation()==TopAbs_REVERSED);
// push the first point
ret.push_back(curve.Value(reversed?elast:efirst));
Handle(Geom_Curve) c = BRep_Tool::Curve(edge, first, last);
first = c->FirstParameter();
last = c->LastParameter();
if(efirst>elast) {
if(first<last)
std::swap(first,last);
}else if(first>last)
std::swap(first,last);
// NOTE: OCCT QuasiUniformDeflection has a bug cause it to return only
// partial points for some (BSpline) curve if we pass in the edge trimmed
// first and last parameters. Passing the original curve first and last
// parameters works fine. The following algorithm uses the original curve
// parameters, and skip those out of range. The algorithm shall work the
// same for any other discetization algorithm, althgouth it seems only
// QuasiUniformDeflection has this bug.
// NOTE: QuasiUniformDeflection has trouble with some B-Spline, see
// https://forum.freecadweb.org/viewtopic.php?f=15&t=42628
//
// GCPnts_QuasiUniformDeflection discretizer(curve, deflection, first, last);
//
GCPnts_UniformDeflection discretizer(curve, deflection, first, last);
if (!discretizer.IsDone ())
Standard_Failure::Raise("Curve discretization failed");
if(discretizer.NbPoints () > 1) {
int nbPoints = discretizer.NbPoints ();
//strangely OCC discretizer points are one-based, not zero-based, why?
if(reversed) {
for (int i=nbPoints-1; i>=1; --i) {
auto param = discretizer.Parameter(i);
if(first<last) {
if(param<efirst || param>elast)
continue;
}else if(param>efirst || param<elast)
continue;
ret.push_back(discretizer.Value(i));
}
}else{
for (int i=2; i<=nbPoints; i++) {
auto param = discretizer.Parameter(i);
if(first<last) {
if(param<efirst || param>elast)
continue;
}else if(param>efirst || param<elast)
continue;
ret.push_back(discretizer.Value(i));
}
}
}
// push the last point
ret.push_back(curve.Value(reversed?efirst:elast));
return ret;
}
void Area::addWire(CArea &area, const TopoDS_Wire& wire,
const gp_Trsf *trsf, double deflection, bool to_edges)
{
CCurve ccurve;
BRepTools_WireExplorer xp(trsf?TopoDS::Wire(
wire.Moved(TopLoc_Location(*trsf))):wire);
if(!xp.More()) {
AREA_TRACE("empty wire");
return;
}
gp_Pnt p = BRep_Tool::Pnt(xp.CurrentVertex());
ccurve.append(CVertex(Point(p.X(),p.Y())));
for (;xp.More();xp.Next()) {
const TopoDS_Edge &edge = TopoDS::Edge(xp.Current());
BRepAdaptor_Curve curve(edge);
bool reversed = (xp.Current().Orientation()==TopAbs_REVERSED);
p = curve.Value(reversed?curve.FirstParameter():curve.LastParameter());
switch (curve.GetType()) {
case GeomAbs_Line: {
ccurve.append(CVertex(Point(p.X(),p.Y())));
if(to_edges) {
area.append(ccurve);
ccurve.m_vertices.pop_front();
}
break;
} case GeomAbs_Circle:{
double first = curve.FirstParameter();
double last = curve.LastParameter();
gp_Circ circle = curve.Circle();
gp_Dir dir = circle.Axis().Direction();
gp_Pnt center = circle.Location();
int type = dir.Z()<0?-1:1;
if(reversed) type = -type;
if(fabs(first-last)>M_PI) {
// Split arc(circle) larger than half circle. Because gcode
// can't handle full circle?
gp_Pnt mid = curve.Value((last-first)*0.5+first);
ccurve.append(CVertex(type,Point(mid.X(),mid.Y()),
Point(center.X(),center.Y())));
}
ccurve.append(CVertex(type,Point(p.X(),p.Y()),
Point(center.X(),center.Y())));
if(to_edges) {
ccurve.UnFitArcs();
CCurve c;
c.append(ccurve.m_vertices.front());
auto it = ccurve.m_vertices.begin();
for(++it;it!=ccurve.m_vertices.end();++it) {
c.append(*it);
area.append(c);
c.m_vertices.pop_front();
}
ccurve.m_vertices.clear();
ccurve.append(c.m_vertices.front());
}
break;
} default: {
// Discretize all other type of curves
const auto &pts = discretize(edge,deflection);
for(size_t i=1;i<pts.size();++i) {
auto &pt = pts[i];
ccurve.append(CVertex(Point(pt.X(),pt.Y())));
if(to_edges) {
area.append(ccurve);
ccurve.m_vertices.pop_front();
}
}
}}
}
if(!to_edges) {
if(BRep_Tool::IsClosed(wire) && !ccurve.IsClosed()) {
AREA_WARN("ccurve not closed");
ccurve.append(ccurve.m_vertices.front());
}
area.move(std::move(ccurve));
}
}
void Area::clean(bool deleteShapes) {
myShapeDone = false;
mySections.clear();
myShape.Nullify();
myArea.reset();
myAreaOpen.reset();
myShapePlane.Nullify();
if(deleteShapes){
myShapes.clear();
myHaveFace = false;
myHaveSolid = false;
}
}
static inline ClipperLib::ClipType toClipperOp(short op) {
switch(op){
case Area::OperationUnion:
return ClipperLib::ctUnion;
break;
case Area::OperationDifference:
return ClipperLib::ctDifference;
break;
case Area::OperationIntersection:
return ClipperLib::ctIntersection;
break;
case Area::OperationXor:
return ClipperLib::ctXor;
break;
default:
throw Base::ValueError("invalid Operation");
}
}
void Area::add(const TopoDS_Shape &shape,short op) {
if(shape.IsNull())
throw Base::ValueError("null shape");
if(op!=OperationCompound)
toClipperOp(op);
bool haveSolid = TopExp_Explorer(shape, TopAbs_SOLID).More();
//TODO: shall we support Shells?
if((!haveSolid && myHaveSolid) ||
(haveSolid && !myHaveSolid && !myShapes.empty()))
throw Base::ValueError("mixing solid and planar shapes is not allowed");
myHaveSolid = haveSolid;
clean();
if(op!=OperationCompound && myShapes.empty())
op = OperationUnion;
myShapes.emplace_back(op,shape);
}
void Area::setParams(const AreaParams ¶ms) {
#define AREA_SRC(_param) params.PARAM_FNAME(_param)
// Validate all enum type of parameters
PARAM_ENUM_CHECK(AREA_SRC,PARAM_ENUM_EXCEPT,AREA_PARAMS_CONF);
if(params!=myParams) {
clean();
myParams = params;
}
}
void Area::addToBuild(CArea &area, const TopoDS_Shape &shape) {
if(myParams.Fill==FillAuto && !myHaveFace) {
TopExp_Explorer it(shape, TopAbs_FACE);
myHaveFace = it.More();
}
TopoDS_Shape plane = getPlane();
CArea areaOpen;
mySkippedShapes += addShape(area,shape,&myTrsf,myParams.Deflection,
myParams.Coplanar==CoplanarNone?NULL:&plane,
myHaveSolid||myParams.Coplanar==CoplanarForce,&areaOpen,
myParams.OpenMode==OpenModeEdges,myParams.Reorient);
if(myProjecting) {
// when projecting, we force all wires to be CCW in order to remove
// inner holes
for(auto &c : area.m_curves) {
if(c.IsClosed() && c.IsClockwise())
c.Reverse();
}
}
if(areaOpen.m_curves.size()) {
if(&area == myArea.get() || myParams.OpenMode == OpenModeNone)
myAreaOpen->m_curves.splice(myAreaOpen->m_curves.end(),areaOpen.m_curves);
else
AREA_WARN("open wires discarded in clipping shapes");
}
}
static inline void getEndPoints(const TopoDS_Edge &e, gp_Pnt &p1, gp_Pnt &p2) {
p1 = BRep_Tool::Pnt(TopExp::FirstVertex(e));
p2 = BRep_Tool::Pnt(TopExp::LastVertex(e));
}
static inline void getEndPoints(const TopoDS_Wire &wire, gp_Pnt &p1, gp_Pnt &p2) {
BRepTools_WireExplorer xp(wire);
p1 = BRep_Tool::Pnt(TopoDS::Vertex(xp.CurrentVertex()));
for(;xp.More();xp.Next());
p2 = BRep_Tool::Pnt(TopoDS::Vertex(xp.CurrentVertex()));
}
struct WireJoiner {
typedef bg::model::box<gp_Pnt> Box;
static bool getBBox(const TopoDS_Edge &e, Box &box) {
Bnd_Box bound;
BRepBndLib::Add(e,bound);
bound.SetGap(0.1);
if (bound.IsVoid()) {
if(FC_LOG_INSTANCE.isEnabled(FC_LOGLEVEL_LOG))
AREA_WARN("failed to get bound of edge");
return false;
}
Standard_Real xMin, yMin, zMin, xMax, yMax, zMax;
bound.Get(xMin, yMin, zMin, xMax, yMax, zMax);
box = Box(gp_Pnt(xMin,yMin,zMin), gp_Pnt(xMax,yMax,zMax));
return true;
}
struct EdgeInfo {
TopoDS_Edge edge;
gp_Pnt p1;
gp_Pnt p2;
Box box;
int iteration;
int iStart[2]; // adjacent list index start for p1 and p2
int iEnd[2]; // adjacent list index end
bool used;
bool hasBox;
EdgeInfo(const TopoDS_Edge &e, bool bbox)
:edge(e),hasBox(false)
{
getEndPoints(e,p1,p2);
if(bbox) hasBox= getBBox(e,box);
reset();
}
EdgeInfo(const TopoDS_Edge &e, const gp_Pnt &pt1,
const gp_Pnt &pt2, bool bbox)
:edge(e),p1(pt1),p2(pt2),hasBox(false)
{
if(bbox) hasBox= getBBox(e,box);
reset();
}
void reset() {
iteration = 0;
used = false;
iStart[0] = iStart[1] = iEnd[0] = iEnd[1] = -1;
}
};
typedef std::list<EdgeInfo> Edges;
Edges edges;
struct VertexInfo {
Edges::iterator it;
bool start;
VertexInfo(Edges::iterator it, bool start)
:it(it),start(start)
{}
bool operator==(const VertexInfo &other) const {
return it==other.it && start==other.start;
}
const gp_Pnt &pt() const {
return start?it->p1:it->p2;
}
const gp_Pnt &ptOther() const {
return start?it->p2:it->p1;
}
};
struct PntGetter
{
typedef const gp_Pnt& result_type;
result_type operator()(const VertexInfo &v) const {
return v.pt();
}
};
bgi::rtree<VertexInfo,RParameters, PntGetter> vmap;
struct BoxGetter
{
typedef const Box& result_type;
result_type operator()(Edges::iterator it) const {
return it->box;
}
};
bgi::rtree<Edges::iterator,RParameters, BoxGetter> boxMap;
BRep_Builder builder;
TopoDS_Compound comp;
WireJoiner() {
builder.MakeCompound(comp);
}
void remove(Edges::iterator it) {
if(it->hasBox)
boxMap.remove(it);
vmap.remove(VertexInfo(it,true));
vmap.remove(VertexInfo(it,false));
edges.erase(it);
}
void add(Edges::iterator it) {
vmap.insert(VertexInfo(it,true));
vmap.insert(VertexInfo(it,false));
if(it->hasBox)
boxMap.insert(it);
}
void add(const TopoDS_Edge &e, bool bbox=false) {
// if(BRep_Tool::IsClosed(e)){
// BRepBuilderAPI_MakeWire mkWire;
// mkWire.Add(e);
// TopoDS_Wire wire = mkWire.Wire();
// builder.Add(comp,wire);
// return;
// }
gp_Pnt p1,p2;
getEndPoints(e,p1,p2);
// if(p1.SquareDistance(p2) < Precision::SquareConfusion())
// return;
edges.emplace_front(e,p1,p2,bbox);
add(edges.begin());
}
void add(const TopoDS_Shape &shape, bool bbox=false) {
for(TopExp_Explorer xp(shape,TopAbs_EDGE); xp.More(); xp.Next())
add(TopoDS::Edge(xp.Current()),bbox);
}
//This algorithm tries to join connected edges into wires
//
//tol*tol>Precision::SquareConfusion() can be used to join points that are
//close but do not coincide with a line segment. The close points may be
//the results of rounding issue.
//
void join(double tol) {
tol = tol*tol;
while(edges.size()) {
auto it = edges.begin();
BRepBuilderAPI_MakeWire mkWire;
mkWire.Add(it->edge);
gp_Pnt pstart(it->p1),pend(it->p2);
remove(it);
bool done = false;
for(int idx=0;!done&&idx<2;++idx) {
while(edges.size()) {
std::vector<VertexInfo> ret;
ret.reserve(1);
const gp_Pnt &pt = idx==0?pstart:pend;
vmap.query(bgi::nearest(pt,1),std::back_inserter(ret));
assert(ret.size()==1);
double d = ret[0].pt().SquareDistance(pt);
if(d > tol) break;
const auto &info = *ret[0].it;
bool start = ret[0].start;
if(d > Precision::SquareConfusion()) {
// insert a filling edge to solve the tolerance problem
const gp_Pnt &pt = ret[idx].pt();
if(idx)
mkWire.Add(BRepBuilderAPI_MakeEdge(pend,pt).Edge());
else
mkWire.Add(BRepBuilderAPI_MakeEdge(pt,pstart).Edge());
}
if(idx==1 && start) {
pend = info.p2;
mkWire.Add(info.edge);
}else if(idx==0 && !start) {
pstart = info.p1;
mkWire.Add(info.edge);
}else if(idx==0 && start) {
pstart = info.p2;
mkWire.Add(TopoDS::Edge(info.edge.Reversed()));
}else {
pend = info.p1;
mkWire.Add(TopoDS::Edge(info.edge.Reversed()));
}
remove(ret[0].it);
if(pstart.SquareDistance(pend)<=Precision::SquareConfusion()){
done = true;
break;
}
}
}
builder.Add(comp,mkWire.Wire());
}
}
// split any edges that are intersected by other edge's end point in the middle
void splitEdges() {
#if (BOOST_VERSION < 105500)
throw Base::RuntimeError("Module must be built with boost version >= 1.55");
#else
for(auto it=edges.begin();it!=edges.end();) {
const auto &info = *it;
if(!info.hasBox) {
++it;
continue;
}
gp_Pnt pstart(info.p1), pend(info.p2);
gp_Pnt pt;
bool intersects = false;
for(auto vit=boxMap.qbegin(bgi::intersects(info.box));
!intersects && vit!=boxMap.qend();
++vit)
{
const auto &other = *(*vit);
if(info.edge.IsSame(other.edge)) continue;
for(int i=0; i<2; ++i) {
const gp_Pnt &p = i?other.p1:other.p2;
if(pstart.SquareDistance(p)<=Precision::SquareConfusion() ||
pend.SquareDistance(p)<=Precision::SquareConfusion())
continue;
BRepExtrema_DistShapeShape extss(
BRepBuilderAPI_MakeVertex(p),info.edge);
if(extss.IsDone() && extss.NbSolution()) {
const gp_Pnt &pp = extss.PointOnShape2(1);
if(pp.SquareDistance(p)<=Precision::SquareConfusion()) {
pt = pp;
intersects = true;
break;
}
}else if(FC_LOG_INSTANCE.isEnabled(FC_LOGLEVEL_LOG))
AREA_WARN("BRepExtrema_DistShapeShape failed");
}
}
if(!intersects) {
++it;
continue;
}
Standard_Real first,last;
Handle_Geom_Curve curve = BRep_Tool::Curve(it->edge, first, last);
bool reversed = pstart.SquareDistance(curve->Value(last))<=
Precision::SquareConfusion();
BRepBuilderAPI_MakeEdge mkEdge1,mkEdge2;
if(reversed) {
mkEdge1.Init(curve, pt, pstart);
mkEdge2.Init(curve, pend, pt);
}else{
mkEdge1.Init(curve, pstart, pt);
mkEdge2.Init(curve, pt, pend);
}
if(!mkEdge1.IsDone() || !mkEdge2.IsDone()) {
if(FC_LOG_INSTANCE.isEnabled(FC_LOGLEVEL_LOG))
AREA_WARN((reversed?"reversed ":"")<<"edge split failed "<<
AREA_XYZ(pstart)<<", " << AREA_XYZ(pt)<< ", "<<AREA_XYZ(pend)<<
", "<<", err: " << mkEdge1.Error() << ", " << mkEdge2.Error());
++it;
continue;
}
Edges::iterator itNext=it;
++itNext;
remove(it);
add(it=edges.emplace(itNext,mkEdge1.Edge(),true));
add(edges.emplace(itNext,mkEdge2.Edge(),true));
}
#endif
}
// This algorithm tries to find a set of closed wires that includes as many
// edges (added by calling add() ) as possible. One edge may be included
// in more than one closed wires if it connects to more than one edges.
int findClosedWires() {
#if (BOOST_VERSION < 105500)
throw Base::RuntimeError("Module must be built with boost version >= 1.55");
#else
// It seems OCC projector sometimes mess up the tolerance of edges
// which are supposed to be connected. So use a lesser precision
// below, and call makeCleanWire to fix the tolerance
const double tol = 1e-10;
std::vector<VertexInfo> adjacentList;
std::set<EdgeInfo*> edgesToVisit;
int count = 0;
int skips = 0;
for(auto &info : edges)
info.reset();
FC_TIME_INIT(t);
int rcount = 0;
for(auto &info : edges) {
#if OCC_VERSION_HEX >= 0x070000
if(BRep_Tool::IsClosed(info.edge))
#else
if(info.p1.SquareDistance(info.p2)<tol)
#endif
{
builder.Add(comp,BRepBuilderAPI_MakeWire(info.edge).Wire());
++count;
continue;
}
gp_Pnt pt[2];
pt[0] = info.p1;
pt[1] = info.p2;
for(int i=0;i<2;++i) {
if(info.iStart[i]>=0)
continue;
info.iEnd[i] = info.iStart[i] = (int)adjacentList.size();
// populate adjacent list
for(auto vit=vmap.qbegin(bgi::nearest(pt[i],INT_MAX));vit!=vmap.qend();++vit) {
++rcount;
if(vit->pt().SquareDistance(pt[i]) > tol)
break;
auto &vinfo = *vit;
// yes, we push ourself too, because other edges require
// this info in the adjacent list. We'll do filtering later.
adjacentList.push_back(vinfo);
++info.iEnd[i];
}
// copy the adjacent indices to all connected edges
for(int j=info.iStart[i];j<info.iEnd[i];++j) {
auto &other = adjacentList[j];
auto &otherInfo = *other.it;
if(&otherInfo != &info) {
int k = other.start?0:1;
otherInfo.iStart[k] = info.iStart[i];
otherInfo.iEnd[k] = info.iEnd[i];
}
}
}
if(info.iStart[0]!=info.iEnd[0] && info.iStart[1]!=info.iEnd[1]) {
// add the edge only if it is connected to some other edges on
// both ends
edgesToVisit.insert(&info);
}else
++skips;
}
FC_TIME_LOG(t,"rtree::nearest (" << rcount << ')');
struct StackInfo {
size_t iStart;
size_t iEnd;
size_t iCurrent;
StackInfo(size_t idx):iStart(idx),iEnd(idx),iCurrent(idx){}
};
std::vector<StackInfo> stack;
std::vector<VertexInfo> vertexStack;
for(int iteration=1;edgesToVisit.size();++iteration) {
EdgeInfo *currentInfo = *edgesToVisit.begin();
int currentIdx = 1; // used to tell whether search connection from the start(0) or end(1)
TopoDS_Edge &e = currentInfo->edge;
edgesToVisit.erase(edgesToVisit.begin());
gp_Pnt pstart=currentInfo->p1;
gp_Pnt pend=currentInfo->p2;
currentInfo->used = true;
currentInfo->iteration = iteration;
stack.clear();
vertexStack.clear();
// pstart and pend is the start and end vertex of the current wire
while(true) {
// push a new stack entry
stack.emplace_back(vertexStack.size());
auto &r = stack.back();
// this loop is to find all edges connected to pend, and save them into stack.back()
for(int i=currentInfo->iStart[currentIdx];i<currentInfo->iEnd[currentIdx];++i) {
auto &info = *adjacentList[i].it;
if(info.iteration!=iteration) {
info.iteration = iteration;
vertexStack.push_back(adjacentList[i]);
++r.iEnd;
}
}
while(true) {
auto &r = stack.back();
if(r.iCurrent<r.iEnd) {
// now pick one edge from stack.back(), connect it to
// pend, then extend pend
auto &vinfo = vertexStack[r.iCurrent];
pend = vinfo.ptOther();
// update current edge info
currentInfo = &(*vinfo.it);
currentIdx = vinfo.start?1:0;
break;
}
// if no edge left in stack.back(), then pop it, and try again
vertexStack.erase(vertexStack.begin()+r.iStart,vertexStack.end());
stack.pop_back();
if(stack.empty())
break;
++stack.back().iCurrent;
}
if(stack.empty()) {
// If stack is empty, it means this wire is open. Try a new
// starting edge
++skips;
break;
}
if(pstart.SquareDistance(pend) > tol) {
// if the wire is not closed yet, continue search for the
// next connected edge
continue;
}
Handle(ShapeExtend_WireData) wireData = new ShapeExtend_WireData();
wireData->Add(e);
for(auto &r : stack) {
const auto &v = vertexStack[r.iCurrent];
auto &info = *v.it;
if(v.start)
wireData->Add(info.edge);
else
wireData->Add(TopoDS::Edge(info.edge.Reversed()));
}