mirror of
https://github.com/NGSolve/netgen.git
synced 2024-12-25 21:40:33 +05:00
4033fac1b3
Found via `codespell -q 3 -S ./external_dependencies/pybind11 -L alledges,allright,ane,anormal,ans,apoints,ba,boxs,cancle,childs,co-ordinate,co-ordinates,daty,enty,filld,hel,identifyable,ist,linz,lod,ned,nd,selt,statics,suround,thev,thist,thisy,timere,upto,wel`
1109 lines
23 KiB
C++
1109 lines
23 KiB
C++
#include <mystdlib.h>
|
|
#include <core/register_archive.hpp>
|
|
|
|
#include <myadt.hpp>
|
|
#include <linalg.hpp>
|
|
#include <gprim.hpp>
|
|
|
|
#include <meshing.hpp>
|
|
|
|
#include "stlgeom.hpp"
|
|
#include <vector>
|
|
#include <cctype>
|
|
|
|
namespace netgen
|
|
{
|
|
|
|
|
|
STLTopology :: STLTopology()
|
|
: trias(), topedges(), points(), ht_topedges(NULL),
|
|
trigsperpoint(), neighbourtrigs()
|
|
{
|
|
;
|
|
}
|
|
|
|
STLTopology :: ~STLTopology()
|
|
{
|
|
;
|
|
}
|
|
|
|
|
|
|
|
|
|
STLGeometry * STLTopology :: LoadBinary (istream & ist)
|
|
{
|
|
STLGeometry * geom = new STLGeometry();
|
|
NgArray<STLReadTriangle> readtrigs;
|
|
|
|
PrintMessage(1,"Read STL binary file");
|
|
|
|
if (sizeof(int) != 4 || sizeof(float) != 4)
|
|
{
|
|
PrintWarning("for stl-binary compatibility only use 32 bit compilation!!!");
|
|
}
|
|
|
|
//specific settings for stl-binary format
|
|
const int namelen = 80; //length of name of header in file
|
|
const int nospaces = 2; //number of spaces after a triangle
|
|
|
|
//read header: name
|
|
char buf[namelen+1];
|
|
FIOReadStringE(ist,buf,namelen);
|
|
PrintMessage(5,"header = ",buf);
|
|
|
|
//Read Number of facets
|
|
int nofacets;
|
|
FIOReadInt(ist,nofacets);
|
|
PrintMessage(5,"NO facets = ",nofacets);
|
|
|
|
Point<3> pts[3];
|
|
Vec<3> normal;
|
|
|
|
char spaces[nospaces+1];
|
|
|
|
for (int cntface = 0; cntface < nofacets; cntface++)
|
|
{
|
|
if (cntface % 10000 == 0)
|
|
// { PrintDot(); }
|
|
PrintMessageCR (3, cntface, " triangles loaded\r");
|
|
|
|
float f;
|
|
FIOReadFloat(ist,f); normal(0) = f;
|
|
FIOReadFloat(ist,f); normal(1) = f;
|
|
FIOReadFloat(ist,f); normal(2) = f;
|
|
|
|
for (int j = 0; j < 3; j++)
|
|
{
|
|
FIOReadFloat(ist,f); pts[j](0) = f;
|
|
FIOReadFloat(ist,f); pts[j](1) = f;
|
|
FIOReadFloat(ist,f); pts[j](2) = f;
|
|
}
|
|
|
|
readtrigs.Append (STLReadTriangle (pts, normal));
|
|
FIOReadString(ist,spaces,nospaces);
|
|
}
|
|
PrintMessage (3, nofacets, " triangles loaded\r");
|
|
|
|
geom->InitSTLGeometry(readtrigs);
|
|
|
|
return geom;
|
|
}
|
|
|
|
|
|
void STLTopology :: SaveBinary (const filesystem::path & filename, const char* aname) const
|
|
{
|
|
ofstream ost(filename);
|
|
PrintFnStart("Write STL binary file '",filename,"'");
|
|
|
|
if (sizeof(int) != 4 || sizeof(float) != 4)
|
|
{PrintWarning("for stl-binary compatibility only use 32 bit compilation!!!");}
|
|
|
|
//specific settings for stl-binary format
|
|
const int namelen = 80; //length of name of header in file
|
|
const int nospaces = 2; //number of spaces after a triangle
|
|
|
|
//write header: aname
|
|
int i, j;
|
|
char buf[namelen+1];
|
|
int strend = 0;
|
|
for(i = 0; i <= namelen; i++)
|
|
{
|
|
if (aname[i] == 0) {strend = 1;}
|
|
if (!strend) {buf[i] = aname[i];}
|
|
else {buf[i] = 0;}
|
|
}
|
|
|
|
FIOWriteString(ost,buf,namelen);
|
|
PrintMessage(5,"header = ",buf);
|
|
|
|
//RWrite Number of facets
|
|
int nofacets = GetNT();
|
|
FIOWriteInt(ost,nofacets);
|
|
PrintMessage(5,"NO facets = ", nofacets);
|
|
|
|
float f;
|
|
char spaces[nospaces+1];
|
|
for (i = 0; i < nospaces; i++) {spaces[i] = ' ';}
|
|
spaces[nospaces] = 0;
|
|
|
|
for (i = 1; i <= GetNT(); i++)
|
|
{
|
|
const STLTriangle & t = GetTriangle(i);
|
|
|
|
const Vec<3> & n = t.Normal();
|
|
f = n(0); FIOWriteFloat(ost,f);
|
|
f = n(1); FIOWriteFloat(ost,f);
|
|
f = n(2); FIOWriteFloat(ost,f);
|
|
|
|
for (j = 1; j <= 3; j++)
|
|
{
|
|
const Point3d p = GetPoint(t.PNum(j));
|
|
|
|
f = p.X(); FIOWriteFloat(ost,f);
|
|
f = p.Y(); FIOWriteFloat(ost,f);
|
|
f = p.Z(); FIOWriteFloat(ost,f);
|
|
}
|
|
FIOWriteString(ost,spaces,nospaces);
|
|
}
|
|
PrintMessage(5,"done");
|
|
}
|
|
|
|
|
|
void STLTopology :: SaveSTLE (const filesystem::path & filename) const
|
|
{
|
|
ofstream outf (filename);
|
|
int i, j;
|
|
|
|
outf << GetNT() << endl;
|
|
for (i = 1; i <= GetNT(); i++)
|
|
{
|
|
const STLTriangle & t = GetTriangle(i);
|
|
for (j = 1; j <= 3; j++)
|
|
{
|
|
const Point3d p = GetPoint(t.PNum(j));
|
|
outf << p.X() << " " << p.Y() << " " << p.Z() << endl;
|
|
}
|
|
}
|
|
|
|
|
|
int ned = 0;
|
|
for (i = 1; i <= GetNTE(); i++)
|
|
{
|
|
if (GetTopEdge (i).GetStatus() == ED_CONFIRMED)
|
|
ned++;
|
|
}
|
|
|
|
outf << ned << endl;
|
|
|
|
for (i = 1; i <= GetNTE(); i++)
|
|
{
|
|
const STLTopEdge & edge = GetTopEdge (i);
|
|
if (edge.GetStatus() == ED_CONFIRMED)
|
|
for (j = 1; j <= 2; j++)
|
|
{
|
|
const Point3d p = GetPoint(edge.PNum(j));
|
|
outf << p.X() << " " << p.Y() << " " << p.Z() << endl;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
STLGeometry * STLTopology :: LoadNaomi (istream & ist)
|
|
{
|
|
int i;
|
|
STLGeometry * geom = new STLGeometry();
|
|
NgArray<STLReadTriangle> readtrigs;
|
|
|
|
PrintFnStart("read NAOMI file format");
|
|
|
|
char buf[100];
|
|
Vec<3> normal;
|
|
|
|
//int cntface = 0;
|
|
//int cntvertex = 0;
|
|
double px, py, pz;
|
|
|
|
|
|
int noface, novertex;
|
|
NgArray<Point<3> > readpoints;
|
|
|
|
ist >> buf;
|
|
if (strcmp (buf, "NODES") == 0)
|
|
{
|
|
ist >> novertex;
|
|
PrintMessage(5,"number of vertices = ", novertex);
|
|
for (i = 0; i < novertex; i++)
|
|
{
|
|
ist >> px;
|
|
ist >> py;
|
|
ist >> pz;
|
|
readpoints.Append(Point<3> (px,py,pz));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
PrintFileError("no node information");
|
|
}
|
|
|
|
|
|
ist >> buf;
|
|
if (strcmp (buf, "2D_EDGES") == 0)
|
|
{
|
|
ist >> noface;
|
|
PrintMessage(5,"number of faces=",noface);
|
|
int dummy, p1, p2, p3;
|
|
Point<3> pts[3];
|
|
|
|
for (i = 0; i < noface; i++)
|
|
{
|
|
ist >> dummy; //2
|
|
ist >> dummy; //1
|
|
ist >> p1;
|
|
ist >> p2;
|
|
ist >> p3;
|
|
ist >> dummy; //0
|
|
|
|
pts[0] = readpoints.Get(p1);
|
|
pts[1] = readpoints.Get(p2);
|
|
pts[2] = readpoints.Get(p3);
|
|
|
|
normal = Cross (pts[1]-pts[0], pts[2]-pts[0]) . Normalize();
|
|
|
|
readtrigs.Append (STLReadTriangle (pts, normal));
|
|
|
|
}
|
|
PrintMessage(5,"read ", readtrigs.Size(), " triangles");
|
|
}
|
|
else
|
|
{
|
|
PrintMessage(5,"read='",buf,"'\n");
|
|
PrintFileError("ERROR: no Triangle information");
|
|
}
|
|
|
|
geom->InitSTLGeometry(readtrigs);
|
|
|
|
return geom;
|
|
}
|
|
|
|
void STLTopology :: Save (const filesystem::path & filename) const
|
|
{
|
|
PrintFnStart("Write stl-file '",filename, "'");
|
|
|
|
ofstream fout(filename);
|
|
fout << "solid\n";
|
|
|
|
char buf1[50];
|
|
char buf2[50];
|
|
char buf3[50];
|
|
|
|
int i, j;
|
|
for (i = 1; i <= GetNT(); i++)
|
|
{
|
|
const STLTriangle & t = GetTriangle(i);
|
|
|
|
fout << "facet normal ";
|
|
const Vec3d& n = GetTriangle(i).Normal();
|
|
|
|
sprintf(buf1,"%1.9g",n.X());
|
|
sprintf(buf2,"%1.9g",n.Y());
|
|
sprintf(buf3,"%1.9g",n.Z());
|
|
|
|
fout << buf1 << " " << buf2 << " " << buf3 << "\n";
|
|
fout << "outer loop\n";
|
|
|
|
for (j = 1; j <= 3; j++)
|
|
{
|
|
const Point3d p = GetPoint(t.PNum(j));
|
|
|
|
sprintf(buf1,"%1.9g",p.X());
|
|
sprintf(buf2,"%1.9g",p.Y());
|
|
sprintf(buf3,"%1.9g",p.Z());
|
|
|
|
fout << "vertex " << buf1 << " " << buf2 << " " << buf3 << "\n";
|
|
}
|
|
|
|
fout << "endloop\n";
|
|
fout << "endfacet\n";
|
|
}
|
|
fout << "endsolid\n";
|
|
|
|
|
|
// write also NETGEN surface mesh:
|
|
ofstream fout2("geom.surf");
|
|
fout2 << "surfacemesh" << endl;
|
|
fout2 << GetNP() << endl;
|
|
for (i = 1; i <= GetNP(); i++)
|
|
{
|
|
for (j = 0; j < 3; j++)
|
|
{
|
|
fout2.width(8);
|
|
fout2 << GetPoint(i)(j);
|
|
}
|
|
|
|
fout2 << endl;
|
|
}
|
|
|
|
fout2 << GetNT() << endl;
|
|
for (i = 1; i <= GetNT(); i++)
|
|
{
|
|
const STLTriangle & t = GetTriangle(i);
|
|
for (j = 1; j <= 3; j++)
|
|
{
|
|
fout2.width(8);
|
|
fout2 << t.PNum(j);
|
|
}
|
|
fout2 << endl;
|
|
}
|
|
}
|
|
|
|
|
|
STLGeometry * STLTopology ::Load (istream & ist)
|
|
{
|
|
// Check if the file starts with "solid". If not, the file is binary
|
|
{
|
|
// binary header is 80 bytes, so don't load more than that
|
|
constexpr int buflen = 80;
|
|
char buf[buflen+1];
|
|
FIOReadStringE(ist,buf,buflen);
|
|
|
|
// ignore whitespaces at start of line
|
|
int istart;
|
|
for (istart=0; istart<buflen-5; istart++)
|
|
if(std::isblank(buf[istart])==0)
|
|
break;
|
|
|
|
for (auto i : Range(buflen))
|
|
ist.unget();
|
|
|
|
// does not start with "solid" -> binary file
|
|
if (strncmp(buf+istart, "solid", 5) != 0)
|
|
return LoadBinary(ist);
|
|
|
|
// Check if there is a non-printable character in first 80 bytes
|
|
for (auto i : Range(istart, buflen))
|
|
if(std::isprint(buf[i])==0 && std::isspace(buf[i])==0)
|
|
return LoadBinary(ist);
|
|
}
|
|
|
|
STLGeometry * geom = new STLGeometry();
|
|
|
|
NgArray<STLReadTriangle> readtrigs;
|
|
|
|
char buf[100];
|
|
Point<3> pts[3];
|
|
Vec<3> normal;
|
|
|
|
int cntface = 0;
|
|
int vertex = 0;
|
|
bool badnormals = false;
|
|
ist >> buf; // skip first line
|
|
|
|
while (ist.good())
|
|
{
|
|
ist >> buf;
|
|
|
|
int n = strlen (buf);
|
|
for (int i = 0; i < n; i++)
|
|
buf[i] = tolower (buf[i]);
|
|
|
|
if (strcmp (buf, "facet") == 0)
|
|
{
|
|
cntface++;
|
|
}
|
|
|
|
if (strcmp (buf, "normal") == 0)
|
|
{
|
|
ist >> normal(0)
|
|
>> normal(1)
|
|
>> normal(2);
|
|
normal.Normalize();
|
|
}
|
|
|
|
if (strcmp (buf, "vertex") == 0)
|
|
{
|
|
ist >> pts[vertex](0)
|
|
>> pts[vertex](1)
|
|
>> pts[vertex](2);
|
|
|
|
vertex++;
|
|
|
|
if (vertex == 3)
|
|
{
|
|
if (normal.Length() <= 1e-5)
|
|
|
|
{
|
|
normal = Cross (pts[1]-pts[0], pts[2]-pts[0]);
|
|
normal.Normalize();
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
Vec<3> hnormal = Cross (pts[1]-pts[0], pts[2]-pts[0]);
|
|
hnormal.Normalize();
|
|
|
|
if (normal * hnormal < 0.5)
|
|
badnormals = true;
|
|
}
|
|
|
|
vertex = 0;
|
|
|
|
if ( (Dist2 (pts[0], pts[1]) > 1e-16) &&
|
|
(Dist2 (pts[0], pts[2]) > 1e-16) &&
|
|
(Dist2 (pts[1], pts[2]) > 1e-16) )
|
|
|
|
{
|
|
readtrigs.Append (STLReadTriangle (pts, normal));
|
|
|
|
if (readtrigs.Size() % 100000 == 0)
|
|
PrintMessageCR (3, readtrigs.Size(), " triangles loaded\r");
|
|
}
|
|
else
|
|
{
|
|
cout << "Skipping flat triangle "
|
|
<< "l1 = " << Dist(pts[0], pts[1])
|
|
<< ", l2 = " << Dist(pts[0], pts[2])
|
|
<< ", l3 = " << Dist(pts[2], pts[1]) << endl;
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
PrintMessage (3, readtrigs.Size(), " triangles loaded");
|
|
|
|
if (badnormals)
|
|
{
|
|
PrintWarning("File has normal vectors which differ extremely from geometry->correct with stldoctor!!!");
|
|
}
|
|
|
|
geom->InitSTLGeometry(readtrigs);
|
|
return geom;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void STLTopology :: InitSTLGeometry(const NgArray<STLReadTriangle> & readtrigs)
|
|
{
|
|
// const double geometry_tol_fact = 1E6;
|
|
// distances lower than max_box_size/tol are ignored
|
|
|
|
trias.SetSize(0);
|
|
points.SetSize(0);
|
|
|
|
PrintMessage(3,"number of triangles = ", readtrigs.Size());
|
|
|
|
if (!readtrigs.Size()) return;
|
|
|
|
|
|
boundingbox.Set (readtrigs[0][0]);
|
|
for (int i = 0; i < readtrigs.Size(); i++)
|
|
for (int k = 0; k < 3; k++)
|
|
boundingbox.Add (readtrigs[i][k]);
|
|
|
|
PrintMessage(5,"boundingbox: ", Point3d(boundingbox.PMin()), " - ",
|
|
Point3d(boundingbox.PMax()));
|
|
|
|
Box<3> bb = boundingbox;
|
|
bb.Increase (1);
|
|
|
|
pointtree = new Point3dTree (bb.PMin(), bb.PMax());
|
|
|
|
NgArray<int> pintersect;
|
|
|
|
pointtol = boundingbox.Diam() * stldoctor.geom_tol_fact;
|
|
PrintMessage(5,"point tolerance = ", pointtol);
|
|
PrintMessageCR(5,"identify points ...");
|
|
|
|
for(int i = 0; i < readtrigs.Size(); i++)
|
|
{
|
|
const STLReadTriangle & t = readtrigs[i];
|
|
|
|
STLTriangle st;
|
|
st.SetNormal (t.Normal());
|
|
|
|
for (int k = 0; k < 3; k++)
|
|
{
|
|
Point<3> p = t[k];
|
|
|
|
Point<3> pmin = p - Vec<3> (pointtol, pointtol, pointtol);
|
|
Point<3> pmax = p + Vec<3> (pointtol, pointtol, pointtol);
|
|
|
|
pointtree->GetIntersecting (pmin, pmax, pintersect);
|
|
|
|
if (pintersect.Size() > 1)
|
|
PrintError("too many close points");
|
|
int foundpos = -1;
|
|
if (pintersect.Size())
|
|
foundpos = pintersect[0];
|
|
|
|
if (foundpos == -1)
|
|
{
|
|
foundpos = AddPoint(p);
|
|
pointtree->Insert (p, foundpos);
|
|
}
|
|
if (Dist(p, points[foundpos]) > 1e-10)
|
|
cout << "identify close points: " << p << " " << points[foundpos]
|
|
<< ", dist = " << Dist(p, points[foundpos])
|
|
<< endl;
|
|
st[k] = foundpos;
|
|
}
|
|
|
|
if ( (st[0] == st[1]) ||
|
|
(st[0] == st[2]) ||
|
|
(st[1] == st[2]) )
|
|
{
|
|
PrintError("STL Triangle degenerated");
|
|
}
|
|
else
|
|
{
|
|
AddTriangle(st);
|
|
}
|
|
|
|
}
|
|
PrintMessage(5,"identify points ... done");
|
|
FindNeighbourTrigs();
|
|
}
|
|
|
|
|
|
|
|
|
|
int STLTopology :: GetPointNum (const Point<3> & p)
|
|
{
|
|
Point<3> pmin = p - Vec<3> (pointtol, pointtol, pointtol);
|
|
Point<3> pmax = p + Vec<3> (pointtol, pointtol, pointtol);
|
|
|
|
NgArray<int> pintersect;
|
|
|
|
pointtree->GetIntersecting (pmin, pmax, pintersect);
|
|
if (pintersect.Size() == 1)
|
|
return pintersect[0];
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
void STLTopology :: FindNeighbourTrigs()
|
|
{
|
|
// if (topedges.Size()) return;
|
|
|
|
PushStatusF("Find Neighbour Triangles");
|
|
|
|
PrintMessage(5,"build topology ...");
|
|
|
|
// build up topology tables
|
|
|
|
int nt = GetNT();
|
|
|
|
INDEX_2_HASHTABLE<int> * oldedges = ht_topedges;
|
|
ht_topedges = new INDEX_2_HASHTABLE<int> (GetNP()+1);
|
|
topedges.SetSize(0);
|
|
|
|
for (int i = 1; i <= nt; i++)
|
|
{
|
|
STLTriangle & trig = GetTriangle(i);
|
|
|
|
|
|
for (int j = 1; j <= 3; j++)
|
|
{
|
|
int pi1 = trig.PNumMod (j+1);
|
|
int pi2 = trig.PNumMod (j+2);
|
|
|
|
INDEX_2 i2(pi1, pi2);
|
|
i2.Sort();
|
|
|
|
int enr;
|
|
int othertn;
|
|
|
|
if (ht_topedges->Used(i2))
|
|
{
|
|
enr = ht_topedges->Get(i2);
|
|
topedges.Elem(enr).TrigNum(2) = i;
|
|
|
|
othertn = topedges.Get(enr).TrigNum(1);
|
|
STLTriangle & othertrig = GetTriangle(othertn);
|
|
|
|
trig.NBTrigNum(j) = othertn;
|
|
trig.EdgeNum(j) = enr;
|
|
for (int k = 1; k <= 3; k++)
|
|
if (othertrig.EdgeNum(k) == enr)
|
|
othertrig.NBTrigNum(k) = i;
|
|
}
|
|
else
|
|
{
|
|
topedges.Append (STLTopEdge (pi1, pi2, i, 0));
|
|
enr = topedges.Size();
|
|
ht_topedges->Set (i2, enr);
|
|
trig.EdgeNum(j) = enr;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
PrintMessage(5,"topology built, checking");
|
|
|
|
topology_ok = 1;
|
|
int ne = GetNTE();
|
|
|
|
for (int i = 1; i <= nt; i++)
|
|
GetTriangle(i).flags.toperror = 0;
|
|
|
|
for (int i = 1; i <= nt; i++)
|
|
for (int j = 1; j <= 3; j++)
|
|
{
|
|
const STLTopEdge & edge = GetTopEdge (GetTriangle(i).EdgeNum(j));
|
|
if (edge.TrigNum(1) != i && edge.TrigNum(2) != i)
|
|
{
|
|
topology_ok = 0;
|
|
GetTriangle(i).flags.toperror = 1;
|
|
}
|
|
}
|
|
|
|
for (int i = 1; i <= ne; i++)
|
|
{
|
|
const STLTopEdge & edge = GetTopEdge (i);
|
|
if (!edge.TrigNum(2))
|
|
{
|
|
topology_ok = 0;
|
|
GetTriangle(edge.TrigNum(1)).flags.toperror = 1;
|
|
}
|
|
}
|
|
|
|
if (topology_ok)
|
|
{
|
|
orientation_ok = 1;
|
|
for (int i = 1; i <= nt; i++)
|
|
{
|
|
const STLTriangle & t = GetTriangle (i);
|
|
for (int j = 1; j <= 3; j++)
|
|
{
|
|
const STLTriangle & nbt = GetTriangle (t.NBTrigNum(j));
|
|
if (!t.IsNeighbourFrom (nbt))
|
|
orientation_ok = 0;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
orientation_ok = 0;
|
|
|
|
|
|
|
|
status = STL_GOOD;
|
|
statustext = "";
|
|
if (!topology_ok || !orientation_ok)
|
|
{
|
|
status = STL_ERROR;
|
|
if (!topology_ok)
|
|
statustext = "Topology not ok";
|
|
else
|
|
statustext = "Orientation not ok";
|
|
}
|
|
|
|
|
|
PrintMessage(3,"topology_ok = ",topology_ok);
|
|
PrintMessage(3,"orientation_ok = ",orientation_ok);
|
|
PrintMessage(3,"topology found");
|
|
|
|
// generate point -> trig table
|
|
|
|
trigsperpoint.SetSize(GetNP());
|
|
for (int i = 1; i <= GetNT(); i++)
|
|
for (int j = 1; j <= 3; j++)
|
|
trigsperpoint.Add1(GetTriangle(i).PNum(j),i);
|
|
|
|
|
|
//check trigs per point:
|
|
/*
|
|
for (i = 1; i <= GetNP(); i++)
|
|
{
|
|
if (trigsperpoint.EntrySize(i) < 3)
|
|
{
|
|
(*testout) << "ERROR: Point " << i << " has " << trigsperpoint.EntrySize(i) << " triangles!!!" << endl;
|
|
}
|
|
}
|
|
*/
|
|
topedgesperpoint.SetSize (GetNP());
|
|
for (int i = 1; i <= ne; i++)
|
|
for (int j = 1; j <= 2; j++)
|
|
topedgesperpoint.Add1 (GetTopEdge (i).PNum(j), i);
|
|
|
|
PrintMessage(5,"point -> trig table generated");
|
|
|
|
|
|
|
|
// transfer edge data:
|
|
// .. to be done
|
|
delete oldedges;
|
|
|
|
|
|
|
|
// for (STLTrigId ti = 0; ti < GetNT(); ti++)
|
|
for (STLTrigId ti : Range(trias))
|
|
{
|
|
STLTriangle & trig = trias[ti];
|
|
for (int k = 0; k < 3; k++)
|
|
{
|
|
STLPointId pi = trig[k]; // - STLBASE;
|
|
STLPointId pi2 = trig[(k+1)%3]; // - STLBASE;
|
|
STLPointId pi3 = trig[(k+2)%3]; // - STLBASE;
|
|
|
|
// vector along edge
|
|
Vec<3> ve = points[pi2] - points[pi];
|
|
ve.Normalize();
|
|
|
|
// vector along third point
|
|
Vec<3> vt = points[pi3] - points[pi];
|
|
vt -= (vt * ve) * ve;
|
|
vt.Normalize();
|
|
|
|
Vec<3> vn = trig.GeomNormal (points);
|
|
vn.Normalize();
|
|
|
|
double phimin = 10, phimax = -1; // out of (0, 2 pi)
|
|
|
|
for (int j = 0; j < trigsperpoint[pi].Size(); j++)
|
|
{
|
|
STLTrigId ti2 = trigsperpoint[pi][j]; // - STLBASE;
|
|
const STLTriangle & trig2 = trias[ti2];
|
|
|
|
if (ti == ti2) continue;
|
|
|
|
bool hasboth = 0;
|
|
for (int l = 0; l < 3; l++)
|
|
if (trig2[l] /* - STLBASE */ == pi2)
|
|
{
|
|
hasboth = 1;
|
|
break;
|
|
}
|
|
if (!hasboth) continue;
|
|
|
|
STLPointId pi4(0);
|
|
for (int l = 0; l < 3; l++)
|
|
if (trig2[l] /* - STLBASE */ != pi && trig2[l] /* - STLBASE */ != pi2)
|
|
pi4 = trig2[l] /* - STLBASE */;
|
|
|
|
Vec<3> vt2 = points[pi4] - points[pi];
|
|
|
|
double phi = atan2 (vt2 * vn, vt2 * vt);
|
|
if (phi < 0) phi += 2 * M_PI;
|
|
|
|
if (phi < phimin)
|
|
{
|
|
phimin = phi;
|
|
trig.NBTrig (0, (k+2)%3) = ti2; // + STLBASE;
|
|
}
|
|
if (phi > phimax)
|
|
{
|
|
phimax = phi;
|
|
trig.NBTrig (1, (k+2)%3) = ti2; // + STLBASE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
if (status == STL_GOOD)
|
|
{
|
|
// for compatibility:
|
|
neighbourtrigs.SetSize(GetNT());
|
|
for (int i = 1; i <= GetNT(); i++)
|
|
for (int k = 1; k <= 3; k++)
|
|
AddNeighbourTrig (i, GetTriangle(i).NBTrigNum(k));
|
|
}
|
|
else
|
|
{
|
|
// assemble neighbourtrigs (should be done only for illegal topology):
|
|
|
|
neighbourtrigs.SetSize(GetNT());
|
|
|
|
int tr, found;
|
|
int wrongneighbourfound = 0;
|
|
for (int i = 1; i <= GetNT(); i++)
|
|
{
|
|
SetThreadPercent((double)i/(double)GetNT()*100.);
|
|
if (multithread.terminate)
|
|
{
|
|
PopStatus();
|
|
return;
|
|
}
|
|
|
|
for (int k = 1; k <= 3; k++)
|
|
{
|
|
for (int j = 1; j <= trigsperpoint.EntrySize(GetTriangle(i).PNum(k)); j++)
|
|
{
|
|
tr = trigsperpoint.Get(GetTriangle(i).PNum(k),j);
|
|
if (i != tr && (GetTriangle(i).IsNeighbourFrom(GetTriangle(tr))
|
|
|| GetTriangle(i).IsWrongNeighbourFrom(GetTriangle(tr))))
|
|
{
|
|
if (GetTriangle(i).IsWrongNeighbourFrom(GetTriangle(tr)))
|
|
{
|
|
/*(*testout) << "ERROR: triangle " << i << " has a wrong neighbour triangle!!!" << endl;*/
|
|
wrongneighbourfound ++;
|
|
}
|
|
|
|
found = 0;
|
|
for (int ii = 1; ii <= NONeighbourTrigs(i); ii++)
|
|
{if (NeighbourTrig(i,ii) == tr) {found = 1;break;};}
|
|
if (! found) {AddNeighbourTrig(i,tr);}
|
|
}
|
|
}
|
|
}
|
|
if (NONeighbourTrigs(i) != 3)
|
|
{
|
|
PrintError("TRIG ",i," has ",NONeighbourTrigs(i)," neighbours!!!!");
|
|
for (int kk=1; kk <= NONeighbourTrigs(i); kk++)
|
|
{
|
|
PrintMessage(5,"neighbour-trig",kk," = ",int(NeighbourTrig(i,kk)));
|
|
}
|
|
};
|
|
}
|
|
if (wrongneighbourfound)
|
|
{
|
|
PrintError("++++++++++++++++++++\n");
|
|
PrintError(wrongneighbourfound, " wrong oriented neighbourtriangles found!");
|
|
PrintError("try to correct it (with stldoctor)!");
|
|
PrintError("++++++++++++++++++++\n");
|
|
|
|
status = STL_ERROR;
|
|
statustext = "STL Mesh not consistent";
|
|
|
|
multithread.terminate = 1;
|
|
#ifdef STAT_STREAM
|
|
(*statout) << "non-conform stl geometry \\hline" << endl;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
TopologyChanged();
|
|
|
|
PopStatus();
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void STLTopology :: GetTrianglesInBox (/*
|
|
const Point<3> & pmin,
|
|
const Point<3> & pmax,
|
|
*/
|
|
const Box<3> & box,
|
|
NgArray<int> & btrias) const
|
|
{
|
|
if (searchtree)
|
|
|
|
searchtree -> GetIntersecting (box.PMin(), box.PMax(), btrias);
|
|
|
|
else
|
|
{
|
|
int i;
|
|
Box<3> box1 = box;
|
|
box1.Increase (1e-4);
|
|
|
|
btrias.SetSize(0);
|
|
|
|
int nt = GetNT();
|
|
for (i = 1; i <= nt; i++)
|
|
{
|
|
if (box1.Intersect (GetTriangle(i).box))
|
|
{
|
|
btrias.Append (i);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void STLTopology :: AddTriangle(const STLTriangle& t)
|
|
{
|
|
trias.Append(t);
|
|
|
|
const Point<3> & p1 = GetPoint (t.PNum(1));
|
|
const Point<3> & p2 = GetPoint (t.PNum(2));
|
|
const Point<3> & p3 = GetPoint (t.PNum(3));
|
|
|
|
Box<3> box;
|
|
box.Set (p1);
|
|
box.Add (p2);
|
|
box.Add (p3);
|
|
/*
|
|
// Point<3> pmin(p1), pmax(p1);
|
|
pmin.SetToMin (p2);
|
|
pmin.SetToMin (p3);
|
|
pmax.SetToMax (p2);
|
|
pmax.SetToMax (p3);
|
|
*/
|
|
|
|
trias.Last().box = box;
|
|
trias.Last().center = Center (p1, p2, p3);
|
|
double r1 = Dist (p1, trias.Last().center);
|
|
double r2 = Dist (p2, trias.Last().center);
|
|
double r3 = Dist (p3, trias.Last().center);
|
|
trias.Last().rad = max2 (max2 (r1, r2), r3);
|
|
|
|
if (geomsearchtreeon)
|
|
{searchtree->Insert (box.PMin(), box.PMax(), trias.Size());}
|
|
}
|
|
|
|
|
|
|
|
|
|
int STLTopology :: GetLeftTrig(int p1, int p2) const
|
|
{
|
|
int i;
|
|
for (i = 1; i <= trigsperpoint.EntrySize(p1); i++)
|
|
{
|
|
if (GetTriangle(trigsperpoint.Get(p1,i)).HasEdge(p1,p2)) {return trigsperpoint.Get(p1,i);}
|
|
}
|
|
PrintSysError("ERROR in GetLeftTrig !!!");
|
|
|
|
return 0;
|
|
}
|
|
|
|
int STLTopology :: GetRightTrig(int p1, int p2) const
|
|
{
|
|
return GetLeftTrig(p2,p1);
|
|
}
|
|
|
|
|
|
int STLTopology :: NeighbourTrigSorted(int trig, int edgenum) const
|
|
{
|
|
STLPointId p1, p2;
|
|
STLPointId psearch = GetTriangle(trig).PNum(edgenum);
|
|
|
|
for (int i = 1; i <= 3; i++)
|
|
{
|
|
GetTriangle(trig).GetNeighbourPoints(GetTriangle(NeighbourTrig(trig,i)),p1,p2);
|
|
if (p1 == psearch) {return NeighbourTrig(trig,i);}
|
|
}
|
|
|
|
PrintSysError("ERROR in NeighbourTrigSorted");
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
int STLTopology :: GetTopEdgeNum (int pi1, int pi2) const
|
|
{
|
|
if (!ht_topedges) return 0;
|
|
|
|
INDEX_2 i2(pi1, pi2);
|
|
i2.Sort();
|
|
|
|
if (!ht_topedges->Used(i2)) return 0;
|
|
return ht_topedges->Get(i2);
|
|
}
|
|
|
|
|
|
|
|
|
|
void STLTopology :: InvertTrig (int trig)
|
|
{
|
|
if (trig >= 1 && trig <= GetNT())
|
|
{
|
|
GetTriangle(trig).ChangeOrientation();
|
|
FindNeighbourTrigs();
|
|
}
|
|
else
|
|
{
|
|
PrintUserError("no triangle selected!");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
void STLTopology :: DeleteTrig (int trig)
|
|
{
|
|
if (trig >= 1 && trig <= GetNT())
|
|
{
|
|
trias.DeleteElement(trig);
|
|
FindNeighbourTrigs();
|
|
}
|
|
else
|
|
{
|
|
PrintUserError("no triangle selected!");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void STLTopology :: OrientAfterTrig (int trig)
|
|
{
|
|
int starttrig = trig;
|
|
|
|
if (starttrig >= 1 && starttrig <= GetNT())
|
|
{
|
|
|
|
NgArray <int> oriented;
|
|
oriented.SetSize(GetNT());
|
|
int i;
|
|
for (i = 1; i <= oriented.Size(); i++)
|
|
{
|
|
oriented.Elem(i) = 0;
|
|
}
|
|
|
|
oriented.Elem(starttrig) = 1;
|
|
|
|
int k;
|
|
|
|
NgArray <int> list1;
|
|
list1.SetSize(0);
|
|
NgArray <int> list2;
|
|
list2.SetSize(0);
|
|
list1.Append(starttrig);
|
|
|
|
int cnt = 1;
|
|
int end = 0;
|
|
int nt;
|
|
while (!end)
|
|
{
|
|
end = 1;
|
|
for (i = 1; i <= list1.Size(); i++)
|
|
{
|
|
const STLTriangle& tt = GetTriangle(list1.Get(i));
|
|
for (k = 1; k <= 3; k++)
|
|
{
|
|
nt = tt.NBTrigNum (k); // NeighbourTrig(list1.Get(i),k);
|
|
if (oriented.Get(nt) == 0)
|
|
{
|
|
if (tt.IsWrongNeighbourFrom(GetTriangle(nt)))
|
|
{
|
|
GetTriangle(nt).ChangeOrientation();
|
|
}
|
|
oriented.Elem(nt) = 1;
|
|
list2.Append(nt);
|
|
cnt++;
|
|
end = 0;
|
|
}
|
|
}
|
|
}
|
|
list1.SetSize(0);
|
|
for (i = 1; i <= list2.Size(); i++)
|
|
{
|
|
list1.Append(list2.Get(i));
|
|
}
|
|
list2.SetSize(0);
|
|
}
|
|
|
|
PrintMessage(5,"NO corrected triangles = ",cnt);
|
|
if (cnt == GetNT())
|
|
{
|
|
PrintMessage(5,"ALL triangles oriented in same way!");
|
|
}
|
|
else
|
|
{
|
|
PrintWarning("NOT ALL triangles oriented in same way!");
|
|
}
|
|
|
|
// topedges.SetSize(0);
|
|
FindNeighbourTrigs();
|
|
}
|
|
else
|
|
{
|
|
PrintUserError("no triangle selected!");
|
|
}
|
|
}
|
|
|
|
static RegisterClassForArchive<STLTopology> stltop;
|
|
}
|