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Area.cpp
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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_
#endif
#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_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 <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"
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)
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)
{
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)
{
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: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;
}
bool Area::isCoplanar(const TopoDS_Shape &s1, const TopoDS_Shape &s2) {
if(s1.IsNull() || s2.IsNull()) return false;
if(s1.IsEqual(s2)) return true;
TopoDS_Builder builder;
TopoDS_Compound comp;
builder.MakeCompound(comp);
builder.Add(comp,s1);
builder.Add(comp,s2);
BRepLib_FindSurface planeFinder(comp,-1,Standard_True);
return planeFinder.Found();
}
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;
}
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);
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:{
if(!to_edges) {
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())));
break;
}
//fall through
} default: {
// Discretize all other type of curves
GCPnts_QuasiUniformDeflection discretizer(curve, deflection,
curve.FirstParameter(), curve.LastParameter());
if (discretizer.IsDone () && discretizer.NbPoints () > 1) {
int nbPoints = discretizer.NbPoints ();
//strangly OCC discretizer points are one-based, not zero-based, why?
if(reversed) {
for (int i=nbPoints-1; i>=1; --i) {
gp_Pnt pt = discretizer.Value (i);
ccurve.append(CVertex(Point(pt.X(),pt.Y())));
if(to_edges) {
area.append(ccurve);
ccurve.m_vertices.pop_front();
}
}
}else{
for (int i=2; i<=nbPoints; i++) {
gp_Pnt pt = discretizer.Value (i);
ccurve.append(CVertex(Point(pt.X(),pt.Y())));
if(to_edges) {
area.append(ccurve);
ccurve.m_vertices.pop_front();
}
}
}
}else
Standard_Failure::Raise("Curve discretization failed");
}}
}
if(!to_edges) {
if(BRep_Tool::IsClosed(wire) && !ccurve.IsClosed()) {
AREA_WARN("ccurve not closed");
ccurve.append(ccurve.m_vertices.front());
}
area.append(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 = false;
for(TopExp_Explorer it(shape, TopAbs_SOLID);it.More();) {
haveSolid = true;
break;
}
//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.push_back(Shape(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(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(Area::TraceEnabled())
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;
bool used;
bool hasBox;
EdgeInfo(const TopoDS_Edge &e, bool bbox)
:edge(e),iteration(0) ,used(false),hasBox(false)
{
getEndPoints(e,p1,p2);
if(bbox) hasBox= getBBox(e,box);
}
EdgeInfo(const TopoDS_Edge &e, const gp_Pnt &pt1,
const gp_Pnt &pt2, bool bbox)
:edge(e),p1(pt1),p2(pt2),iteration(0)
,used(false),hasBox(false)
{
if(bbox) hasBox= getBBox(e,box);
}
};
typedef std::list<EdgeInfo> Edges;
Edges edges;
struct EdgeValue {
Edges::iterator it;
bool start;
EdgeValue(Edges::iterator _it, bool _start)
:it(_it),start(_start)
{}
bool operator==(const EdgeValue &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 EdgeValue &v) const {
return v.pt();
}
};
bgi::rtree<EdgeValue,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(EdgeValue(it,true));
vmap.remove(EdgeValue(it,false));
edges.erase(it);
}
void add(Edges::iterator it) {
vmap.insert(EdgeValue(it,true));
vmap.insert(EdgeValue(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);
const TopoDS_Wire &wire = mkWire.Wire();
if(bbox && Area::getWireDirection(wire)>0)
builder.Add(comp,wire.Reversed());
else
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>Precision::SquareConfusion() is used to join points that are close
//but do not coincide with a line segment. The close points my the results
//of rounding issue.
//
void join(double 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<EdgeValue> ret;
ret.reserve(1);
const gp_Pnt &pt = idx?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 othe edge's end point in the middle
void splitEdges() {
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(Area::TraceEnabled())
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(Area::TraceEnabled())
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));
}
}
struct StackInfo {
std::deque<EdgeValue> ret;
int idx;
StackInfo():idx(0){}
};
// 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() {
std::map<int,TopoDS_Edge> edgesToVisit;
for(const auto &info : edges)
edgesToVisit[info.edge.HashCode(INT_MAX)] = info.edge;
std::deque<StackInfo> stack;
int skips = 0;
for(int iteration=1;edgesToVisit.size();++iteration) {
auto it = edgesToVisit.begin();
TopoDS_Edge e = it->second;
edgesToVisit.erase(it);
gp_Pnt pstart,pend;
getEndPoints(e,pstart,pend);
bool skip_me = true;
stack.clear();
while(true) {
stack.emplace_back();
auto &r = stack.back();
for(auto vit=vmap.qbegin(bgi::nearest(pend,INT_MAX));
vit!=vmap.qend();++vit)
{
if(vit->pt().SquareDistance(pend) > Precision::SquareConfusion())
break;
auto &info = *vit->it;
// use 'iteration' to make sure we don't visit an edge twice.
if(skip_me && info.edge.IsSame(e)) {
skip_me = false;
info.iteration = iteration;
info.used = true;
continue;
}
if(info.iteration!=iteration) {
info.iteration = iteration;
r.ret.push_back(*vit);
}
}
while(stack.size()) {
auto &r = stack.back();
if(r.idx<(int)r.ret.size()) {
pend = r.ret[r.idx].ptOther();
break;
}
for(auto &v : r.ret)
--v.it->iteration;
stack.pop_back();
if(stack.size())
++stack.back().idx;
}
if(stack.empty()) {
++skips;
break;
}
if(pstart.SquareDistance(pend) > Precision::SquareConfusion())
continue;
BRepBuilderAPI_MakeWire mkWire;
mkWire.Add(e);
for(auto &r : stack) {
const auto &v = r.ret[r.idx];
auto &info = *v.it;
if(!info.used) {
info.used = true;
auto it = edgesToVisit.find(info.edge.HashCode(INT_MAX));
if(it!=edgesToVisit.end())
edgesToVisit.erase(it);
}
if(v.start)
mkWire.Add(info.edge);
else
mkWire.Add(TopoDS::Edge(info.edge.Reversed()));
}
const TopoDS_Wire &wire = mkWire.Wire();
if(Area::getWireDirection(wire)>0)
builder.Add(comp,wire.Reversed());
else
builder.Add(comp,wire);
break;
}
}
return skips;
}
};
void Area::explode(const TopoDS_Shape &shape) {
const TopoDS_Shape &plane = getPlane();
bool haveShape = false;
for(TopExp_Explorer it(shape, TopAbs_FACE); it.More(); it.Next()) {
haveShape = true;
if(myParams.Coplanar!=CoplanarNone && !isCoplanar(it.Current(),plane)){
++mySkippedShapes;
if(myParams.Coplanar == CoplanarForce)
continue;
}
for(TopExp_Explorer itw(it.Current(), TopAbs_WIRE); itw.More(); itw.Next()) {
for(BRepTools_WireExplorer xp(TopoDS::Wire(itw.Current()));xp.More();xp.Next())
addWire(*myArea,BRepBuilderAPI_MakeWire(
TopoDS::Edge(xp.Current())).Wire(),&myTrsf,myParams.Deflection,true);
}
}
if(haveShape) return;
for(TopExp_Explorer it(shape, TopAbs_EDGE); it.More(); it.Next()) {
if(myParams.Coplanar!=CoplanarNone && !isCoplanar(it.Current(),plane)){
++mySkippedShapes;
if(myParams.Coplanar == CoplanarForce)
continue;
}
addWire(*myArea,BRepBuilderAPI_MakeWire(
TopoDS::Edge(it.Current())).Wire(),&myTrsf,myParams.Deflection,true);
}
}
#if 0
static void show(const TopoDS_Shape &shape, const char *name) {
App::Document *pcDoc = App::GetApplication().getActiveDocument();
if (!pcDoc)
pcDoc = App::GetApplication().newDocument();
Part::Feature *pcFeature = (Part::Feature *)pcDoc->addObject("Part::Feature", name);
// copy the data
//TopoShape* shape = new MeshObject(*pShape->getTopoShapeObjectPtr());
pcFeature->Shape.setValue(shape);
//pcDoc->recompute();
}
#endif
template<class Func>
static int foreachSubshape(const TopoDS_Shape &shape, Func func, int type=TopAbs_FACE) {
bool haveShape = false;
switch(type) {
case TopAbs_FACE:
for(TopExp_Explorer it(shape,TopAbs_FACE); it.More(); it.Next()) {
haveShape = true;
func(it.Current(),TopAbs_FACE);
}
if(haveShape) return TopAbs_FACE;
//fall through
case TopAbs_WIRE:
for(TopExp_Explorer it(shape,TopAbs_WIRE); it.More(); it.Next()) {
haveShape = true;
func(it.Current(),TopAbs_WIRE);
}
if(haveShape) return TopAbs_WIRE;
//fall through
default:
for(TopExp_Explorer it(shape,TopAbs_EDGE); it.More(); it.Next()) {
haveShape = true;
func(it.Current(),TopAbs_EDGE);
}
}
return haveShape?TopAbs_EDGE:-1;
}
struct FindPlane {
TopoDS_Shape &myPlaneShape;
gp_Trsf &myTrsf;
double &myZ;
FindPlane(TopoDS_Shape &s, gp_Trsf &t, double &z)
:myPlaneShape(s),myTrsf(t),myZ(z)
{}
void operator()(const TopoDS_Shape &shape, int) {
gp_Trsf trsf;
BRepLib_FindSurface finder(shape.Located(TopLoc_Location()),-1,Standard_True);
if (!finder.Found())
return;
gp_Ax3 pos = GeomAdaptor_Surface(finder.Surface()).Plane().Position();
// TODO: It seemed that FindSurface disregard shape's
// transformation SOMETIME, so we have to transformed the found
// plane manually. Need to figure out WHY!
pos.Transform(shape.Location().Transformation());
// We only use right hand coordinate, hence gp_Ax2 instead of gp_Ax3
// This means that no matter what the work plane face oriented, we
// will treat it as face upward in a right hand coordinate system.
if(!pos.Direct())
pos = gp_Ax3(pos.Ax2());
gp_Dir dir(pos.Direction());
trsf.SetTransformation(pos);
if(fabs(dir.X())<Precision::Confusion() &&
fabs(dir.Y())<Precision::Confusion())
{
TopExp_Explorer it(shape,TopAbs_VERTEX);
const auto &pt = BRep_Tool::Pnt(TopoDS::Vertex(it.Current()));
if(!myPlaneShape.IsNull() && myZ > pt.Z())
return;
myZ = pt.Z();
}else if(!myPlaneShape.IsNull())
return;
myPlaneShape = shape;
myTrsf = trsf;
}
};
TopoDS_Shape Area::findPlane(const TopoDS_Shape &shape, gp_Trsf &trsf)
{
TopoDS_Shape plane;
double top_z;
foreachSubshape(shape,FindPlane(plane,trsf,top_z));
return plane;
}
std::list<TopoDS_Wire> Area::project(const TopoDS_Shape &solid)
{
TIME_INIT2(t,t1);
Handle_HLRBRep_Algo brep_hlr = NULL;
try {
brep_hlr = new HLRBRep_Algo();
brep_hlr->Add(solid, 0);
HLRAlgo_Projector projector(gp_Ax2(gp_Pnt(),gp_Dir(0,0,1)));
brep_hlr->Projector(projector);
brep_hlr->Update();
brep_hlr->Hide();
} catch (...) {
AREA_ERR("error occurred while projecting shape");
}
TIME_PRINT(t1,"HLRBrep_Algo");
WireJoiner joiner;
try {
#define ADD_HLR_SHAPE(_name) \
shape = hlrToShape._name##Compound();\
if(!shape.IsNull()){\
BRepLib::BuildCurves3d(shape);\
joiner.add(shape,true);\
}
TopoDS_Shape shape;
HLRBRep_HLRToShape hlrToShape(brep_hlr);
ADD_HLR_SHAPE(V)
// ADD_HLR_SHAPE(H)
ADD_HLR_SHAPE(OutLineV);
// ADD_HLR_SHAPE(OutLineH);
}
catch (...) {
AREA_ERR("error occurred while extracting edges");
}
TIME_PRINT(t1,"WireJoiner init");
joiner.splitEdges();
TIME_PRINT(t1,"WireJoiner splitEdges");
// for(const auto &v : joiner.edges) {
// joiner.builder.Add(joiner.comp,BRepBuilderAPI_MakeWire(v.edge).Wire());
// }
int skips = joiner.findClosedWires();
TIME_PRINT(t1,"WireJoiner findClosedWires");
if(skips) AREA_WARN("skipped " << skips << " open edges");
std::list<TopoDS_Wire> wires;
Area area(&myParams);
area.myParams.Explode = false;
area.myParams.FitArcs = false;
area.myParams.Reorient = false;
area.myParams.Coplanar = CoplanarNone;
area.add(joiner.comp, OperationUnion);
TopoDS_Shape shape = area.getShape();
TIME_PRINT(t1,"Clipper wire union");
if(shape.IsNull()) {
AREA_ERR("poject failed");
}else{
for(TopExp_Explorer xp(shape, TopAbs_WIRE); xp.More(); xp.Next())
wires.push_back(TopoDS::Wire(xp.Current()));
}
TIME_PRINT(t,"project total");
return std::move(wires);
}
std::vector<shared_ptr<Area> > Area::makeSections(
PARAM_ARGS(PARAM_FARG,AREA_PARAMS_SECTION_EXTRA),
const std::vector<double> &_heights,