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geant4/source/externals/g4tools/include/tools/clist_contour
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Gabriele Cosmo b4a16de652 Import Geant4 11.4.0 source tree
2025-12-05 08:54:02 +01:00

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// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.
#ifndef tools_clist_contour
#define tools_clist_contour
// G.Barrand : inline version of the one found in Lib of OSC 16.11.
// This code is not mine and I keep it "as it is".
// Inheritance :
#include "ccontour"
#include <list>
#include <ostream>
#include <iomanip> //std::setprecision
namespace tools {
// a list of point index referring to the secondary grid
// Let i the index of a point,
typedef std::list<unsigned int> cline_strip;
typedef std::list<cline_strip*> cline_strip_list;
typedef std::vector<cline_strip_list> cline_strip_list_vector;
class clist_contour : public ccontour
{
public: //ccontour
// Adding segment to line strips
// See ccontour::ExportLine for further details
virtual void ExportLine(int iPlane,int x1, int y1, int x2, int y2);
public:
clist_contour();
virtual ~clist_contour(){CleanMemory();}
protected: //G.Barrand
clist_contour(const clist_contour& a_from):ccontour(a_from){}
private: //G.Barrand
clist_contour& operator=(const clist_contour&){return *this;}
public:
// retreiving list of line strip for the i-th contour
cline_strip_list* get_lines(unsigned int iPlane);
// Basic algorithm to concatanate line strip. Not optimized at all !
bool compact_strips ();
// generate contour strips
virtual void generate();
protected: //G.Barrand
// Initializing memory
virtual void InitMemory();
// Cleaning memory and line strips
virtual void CleanMemory();
/// debuggin
void DumpPlane(unsigned int iPlane) const;
// Area given by this function can be positive or negative depending on the winding direction of the contour.
double Area(cline_strip* Line);
double EdgeWeight(cline_strip* pLine, double R);
//bool PrintContour(std::ostream& a_out);
protected:
// Merges pStrip1 with pStrip2 if they have a common end point
bool MergeStrips(cline_strip* pStrip1, cline_strip* pStrip2);
// Merges the two strips with a welding threshold.
bool ForceMerge(cline_strip* pStrip1, cline_strip* pStrip2,double);
// returns true if contour is touching boundary
bool OnBoundary(cline_strip* pStrip);
// L.Garnier : check specials case for CompactStrip
bool SpecialCompactStripCase(double,double,double,double,double);
private:
// array of line strips
cline_strip_list_vector m_vStripLists;
typedef unsigned int UINT;
private:
static const char* _TT(const char* what) {return what;}
static void _TRACE_(const char* /*a_fmt*/,...) {
}
static void _PROBLEM_(const char* what) {::printf("%s",what);}
static bool _ASSERT_RET_(bool what,const char* cmt) {
if(!(what)) {
::printf("debug : ListContour : assert failure in %s\n",cmt);
return false;
}
return true;
}
static bool _ASSERT_MERGE_RET_(bool what,const char* cmt,cline_strip* pStrip2) {
if(!(what)) {
::printf("debug : ListContour : assert failure in %s\n",cmt);
pStrip2->clear();
return false;
}
return true;
}
};
// implementation :
inline clist_contour::clist_contour()
: ccontour()
{
}
inline void clist_contour::generate()
{
// generate line strips
ccontour::generate();
// compact strips
compact_strips ();
}
inline void clist_contour::InitMemory()
{
ccontour::InitMemory();
cline_strip_list::iterator pos;
cline_strip* pStrip;
if (!m_vStripLists.empty())
{
UINT i;
// reseting lists
_ASSERT_(m_vStripLists.size() == get_number_of_planes(),"clist_contour::InitMemory::0");
for (i=0;i<get_number_of_planes();i++)
{
for (pos = m_vStripLists[i].begin(); pos!=m_vStripLists[i].end() ; pos++)
{
pStrip=(*pos);
_ASSERTP_(pStrip,"clist_contour::InitMemory::1");
pStrip->clear();
delete pStrip;
}
m_vStripLists[i].clear();
}
}
else
m_vStripLists.resize(get_number_of_planes());
}
inline void clist_contour::CleanMemory()
{
ccontour::CleanMemory();
cline_strip_list::iterator pos;
cline_strip* pStrip;
UINT i;
// reseting lists
for (i=0;i<m_vStripLists.size();i++) //G.Barrand
{
for (pos=m_vStripLists[i].begin(); pos!=m_vStripLists[i].end();pos++)
{
pStrip=(*pos);
_ASSERTP_(pStrip,"clist_contour::CleanMemory");
pStrip->clear();
delete pStrip;
}
m_vStripLists[i].clear();
}
}
inline void clist_contour::ExportLine(int iPlane,int x1, int y1, int x2, int y2)
{
_ASSERT_(iPlane>=0,"clist_contour::ExportLine::0");
_ASSERT_(iPlane<(int)get_number_of_planes(),"clist_contour::ExportLine::1");
// check that the two points are not at the beginning or end of the some line strip
UINT i1=y1*(m_iColSec+1)+x1;
UINT i2=y2*(m_iColSec+1)+x2;
cline_strip* pStrip;
cline_strip_list::iterator pos;
bool added = false;
for(pos=m_vStripLists[iPlane].begin(); pos!=m_vStripLists[iPlane].end() && !added; pos++)
{
pStrip=(*pos);
_ASSERTP_(pStrip,"clist_contour::ExportLine::2");
// check if points are appendable to this strip
if (i1==pStrip->front())
{
pStrip->insert(pStrip->begin(),i2);
return;
}
if (i1==pStrip->back())
{
pStrip->insert(pStrip->end(),i2);
return;
}
if (i2==pStrip->front())
{
pStrip->insert(pStrip->begin(),i1);
return;
}
if (i2==pStrip->back())
{
pStrip->insert(pStrip->end(),i1);
return;
}
}
// segment was not part of any line strip, creating new one
pStrip=new cline_strip;
pStrip->insert(pStrip->begin(),i1);
pStrip->insert(pStrip->end(),i2);
m_vStripLists[iPlane].insert(m_vStripLists[iPlane].begin(),pStrip);
}
inline bool clist_contour::ForceMerge(cline_strip* pStrip1, cline_strip* pStrip2,double aHeight)
{
cline_strip::iterator pos;
cline_strip::reverse_iterator rpos;
if (pStrip2->empty())
return false;
double x[4], y[4], weldDist;
int index;
index = pStrip1->front();
x[0] = get_xi(index);
y[0] = get_yi(index);
index = pStrip1->back();
x[1] = get_xi(index);
y[1] = get_yi(index);
index = pStrip2->front();
x[2] = get_xi(index);
y[2] = get_yi(index);
index = pStrip2->back();
x[3] = get_xi(index);
y[3] = get_yi(index);
weldDist = 10*(m_dDx*m_dDx+m_dDy*m_dDy);
if (((x[1]-x[2])*(x[1]-x[2])+(y[1]-y[2])*(y[1]-y[2])< weldDist)
|| SpecialCompactStripCase(x[1],x[2],y[1],y[2],aHeight)) // L.Garnier
{
for (pos=pStrip2->begin(); pos!=pStrip2->end();pos++)
{
index=(*pos);
if(!_ASSERT_RET_(index>=0,"clist_contour::ForceMerge::0")) return false;
pStrip1->insert(pStrip1->end(),index);
}
pStrip2->clear();
return true;
}
if (((x[3]-x[0])*(x[3]-x[0])+(y[3]-y[0])*(y[3]-y[0])< weldDist)
|| SpecialCompactStripCase(x[3],x[0],y[3],y[0],aHeight)) // L.Garnier
{
for (rpos=pStrip2->rbegin(); rpos!=pStrip2->rend();rpos++)
{
index=(*rpos);
if(!_ASSERT_RET_(index>=0,"clist_contour::ForceMerge::1")) return false;
pStrip1->insert(pStrip1->begin(),index);
}
pStrip2->clear();
return true;
}
if (((x[1]-x[3])*(x[1]-x[3])+(y[1]-y[3])*(y[1]-y[3])< weldDist)
|| SpecialCompactStripCase(x[1],x[3],y[1],y[3],aHeight)) // L.Garnier
{
for (rpos=pStrip2->rbegin(); rpos!=pStrip2->rend();rpos++)
{
index=(*rpos);
if(!_ASSERT_RET_(index>=0,"clist_contour::ForceMerge::2")) return false;
pStrip1->insert(pStrip1->end(),index);
}
pStrip2->clear();
return true;
}
if (((x[0]-x[2])*(x[0]-x[2])+(y[0]-y[2])*(y[0]-y[2])< weldDist)
|| SpecialCompactStripCase(x[0],x[2],y[0],y[2],aHeight)) // L.Garnier
{
for (pos=pStrip2->begin(); pos!=pStrip2->end();pos++)
{
index=(*pos);
if(!_ASSERT_RET_(index>=0,"clist_contour::ForceMerge::3")) return false;
pStrip1->insert(pStrip1->begin(),index);
}
pStrip2->clear();
return true;
}
return false;
}
inline bool clist_contour::MergeStrips(cline_strip* pStrip1, cline_strip* pStrip2)
{
cline_strip::iterator pos;
cline_strip::reverse_iterator rpos;
if (pStrip2->empty())
return false;
int index;
// debugging stuff
if (pStrip2->front()==pStrip1->front())
{
// retreiving first element
pStrip2->pop_front();
// adding the rest to strip1
for (pos=pStrip2->begin(); pos!=pStrip2->end();pos++)
{
index=(*pos);
if(!_ASSERT_MERGE_RET_(index>=0,"clist_contour::MergeStrips::0",pStrip2)) return false;
pStrip1->insert(pStrip1->begin(),index);
}
pStrip2->clear();
return true;
}
if (pStrip2->front()==pStrip1->back())
{
pStrip2->pop_front();
// adding the rest to strip1
for (pos=pStrip2->begin(); pos!=pStrip2->end();pos++)
{
index=(*pos);
if(!_ASSERT_MERGE_RET_(index>=0,"clist_contour::MergeStrips::1",pStrip2)) return false;
pStrip1->insert(pStrip1->end(),index);
}
pStrip2->clear();
return true;
}
if (pStrip2->back()==pStrip1->front())
{
pStrip2->pop_back();
// adding the rest to strip1
for (rpos=pStrip2->rbegin(); rpos!=pStrip2->rend();rpos++)
{
index=(*rpos);
if(!_ASSERT_MERGE_RET_(index>=0,"clist_contour::MergeStrips::2",pStrip2)) return false;
pStrip1->insert(pStrip1->begin(),index);
}
pStrip2->clear();
return true;
}
if (pStrip2->back()==pStrip1->back())
{
pStrip2->pop_back();
// adding the rest to strip1
for (rpos=pStrip2->rbegin(); rpos!=pStrip2->rend();rpos++)
{
index=(*rpos);
if(!_ASSERT_MERGE_RET_(index>=0,"clist_contour::MergeStrips::3",pStrip2)) return false;
pStrip1->insert(pStrip1->end(),index);
}
pStrip2->clear();
return true;
}
return false;
}
inline bool clist_contour::compact_strips ()
{
cline_strip* pStrip;
cline_strip* pStripBase = 0;
UINT i;
cline_strip_list::iterator pos,pos2;
cline_strip_list newList;
bool again, changed;
const double weldDist = 10*(m_dDx*m_dDx+m_dDy*m_dDy);
if(!_ASSERT_RET_(m_vStripLists.size() == get_number_of_planes(),"clist_contour::compact_strips ::0")) return false;
for (i=0;i<get_number_of_planes();i++)
{
double planeHeight = get_plane(i);
again=true;
while(again)
{
// REPEAT COMPACT PROCESS UNTILL LAST PROCESS MAKES NO CHANGE
again=false;
// building compacted list
if(!_ASSERT_RET_(newList.empty(),"clist_contour::compact_strips ::1")) return false;
for (pos=m_vStripLists[i].begin(); pos!=m_vStripLists[i].end();pos++)
{
pStrip=(*pos);
for (pos2=newList.begin(); pos2!=newList.end();pos2++)
{
pStripBase=(*pos2);
changed=MergeStrips(pStripBase,pStrip);
if (changed)
again=true;
if (pStrip->empty())
break;
}
if (pStrip->empty())
delete pStrip;
else
newList.insert(newList.begin(),pStrip);
}
// deleting old list
m_vStripLists[i].clear();
cline_strip* pStrip2;
// Copying all
for (pos2=newList.begin(); pos2 != newList.end(); pos2++)
{
pStrip2=(*pos2);
cline_strip::iterator pos1 = pStrip2->begin(),pos3;
while (pos1!=pStrip2->end())
{
pos3 = pos1;
pos3++;
if (pos3==pStrip2->end()) break; //G.Barrand
if ( (*pos1) == (*pos3))
{
/*G.Barrand : we can't compare with pStrip2->end() content.
if ( (*pos3) != (*pStrip2->end()))
pStrip2->erase(pos3);
else
{
pStrip2->erase(pos3);
break;
}
*/
pStrip2->erase(pos3); //G.Barrand.
}
else
pos1++;
}
if (pStrip2->size()!=1)
m_vStripLists[i].insert(m_vStripLists[i].begin(),pStrip2 );
else
delete pStrip2;
}
// emptying temp list
newList.clear();
} // OF WHILE(AGAIN) (LAST COMPACT PROCESS MADE NO CHANGES)
if (m_vStripLists[i].empty())
continue;
///////////////////////////////////////////////////////////////////////
// compact more
int index,count;
size_t Nstrip,j;
Nstrip = m_vStripLists[i].size();
std::vector<bool> closed(Nstrip);
double x,y;
// First let's find the open and closed lists in m_vStripLists
for(pos2 = m_vStripLists[i].begin(), j=0, count=0; pos2 != m_vStripLists[i].end(); pos2++, j++)
{
pStrip = (*pos2);
// is it open ?
if (pStrip->front() != pStrip->back())
{
index = pStrip->front();
x = get_xi(index); y = get_yi(index);
index = pStrip->back();
x -= get_xi(index); y -= get_yi(index);
// is it "almost closed" ?
if ((x*x+y*y < weldDist) ||
SpecialCompactStripCase(get_xi(pStrip->front()), // L.Garnier
get_xi(pStrip->back()),
get_yi(pStrip->front()),
get_yi(pStrip->back()),
planeHeight))
{
closed[j] = true;
// close it !!! Added by L.Garnier
pStrip->push_back(pStrip->front());
//
}
else
{
closed[j] = false;
// updating not closed counter...
count ++;
}
}
else
closed[j] = true;
}
// is there any open strip ?
if (count > 1)
{
// Merge the open strips into NewList
pos = m_vStripLists[i].begin();
for(j=0;j<Nstrip;j++)
{
if (closed[j] == false )
{
pStrip = (*pos);
newList.insert(newList.begin(),pStrip);
pos = m_vStripLists[i].erase(pos);
}
else
pos ++;
}
// are they open strips to process ?
while(newList.size()>1)
{
pStripBase = newList.front();
// merge the rest to pStripBase
again = true;
while (again)
{
again = false;
pos = newList.begin();
for(pos++; pos!=newList.end();)
{
pStrip = (*pos);
changed = ForceMerge(pStripBase,pStrip,planeHeight);
if (changed)
{
again = true;
delete pStrip;
pos = newList.erase(pos);
}
else
pos ++;
}
} // while(again)
index = pStripBase->front();
x = get_xi(index); y = get_yi(index);
index = pStripBase->back();
x -= get_xi(index); y -= get_yi(index);
// if pStripBase is closed or not
if ((x*x+y*y < weldDist) ||
SpecialCompactStripCase(get_xi(pStripBase->front()), // L.Garnier
get_xi(pStripBase->back()),
get_yi(pStripBase->front()),
get_yi(pStripBase->back()),
planeHeight))
{
// close it !!! Added by L.Garnier
if ((x!=0) || (y!=0)) {
pStripBase->push_back(pStripBase->front());
}
//
m_vStripLists[i].insert(m_vStripLists[i].begin(),pStripBase);
newList.pop_front();
}
else
{
if (OnBoundary(pStripBase))
{
_TRACE_(_TT("# open strip ends on boundary, continue.\n"));
m_vStripLists[i].insert(m_vStripLists[i].begin(),pStripBase);
newList.pop_front();
}
else
{
_PROBLEM_(_TT("unpaird open strip at 1!\n"));
//exit(0);
return false;
}
}
} // while(newList.size()>1);
if (newList.size() ==1)
{
pStripBase = newList.front();
index = pStripBase->front(); // L.Garnier
x = get_xi(index); y = get_yi(index); // L.Garnier
index = pStripBase->back(); // L.Garnier
x -= get_xi(index); y -= get_yi(index); // L.Garnier
// is it "almost closed", give last chance...5*weldDist
if (x*x+y*y < 3*weldDist) // L.Garnier
{
m_vStripLists[i].insert(m_vStripLists[i].begin(),pStripBase);
newList.pop_front();
}
else if (OnBoundary(pStripBase))
{
_TRACE_(_TT("# open strip ends on boundary, continue.\n"));
m_vStripLists[i].insert(m_vStripLists[i].begin(),pStripBase);
newList.pop_front();
}
else
{
_PROBLEM_(_TT("unpaird open strip at 2!\n"));
DumpPlane(i);
//exit(0);
return false;
}
}
newList.clear();
}
else if (count == 1)
{
pos = m_vStripLists[i].begin();
for(j=0;j<Nstrip;j++)
{
if (closed[j] == false )
{
pStripBase = (*pos);
break;
}
pos ++;
}
index = pStripBase->front(); // L.Garnier
x = get_xi(index); y = get_yi(index); // L.Garnier
index = pStripBase->back(); // L.Garnier
x -= get_xi(index); y -= get_yi(index); // L.Garnier
// is it "almost closed", give last chance...5*weldDist
if (x*x+y*y < 2*weldDist) // L.Garnier
{
//close it!!
pStripBase->push_back(pStripBase->front()); // L.Garnier
}
else if (OnBoundary(pStripBase))
{
_TRACE_(_TT("# open strip ends on boundary, continue.\n"));
pStripBase->push_back(pStripBase->front()); // L.Garnier
}
else
{
_TRACE_(_TT("unpaird open strip at 3!"));
DumpPlane(i);
return false; // L.Garnier
//exit(0);
}
newList.clear(); // L.Garnier
}
}
return true;
}
inline bool clist_contour::OnBoundary(cline_strip* pStrip)
{
bool e1,e2;
int index = pStrip->front();
double x = get_xi(index), y = get_yi(index);
if (x==m_pLimits[0] || x == m_pLimits[1] ||
y == m_pLimits[2] || y == m_pLimits[3])
e1 = true;
else
e1 = false;
index = pStrip->back();
x = get_xi(index); y = get_yi(index);
if (x==m_pLimits[0] || x == m_pLimits[1] ||
y == m_pLimits[2] || y == m_pLimits[3])
e2 = true;
else
e2 = false;
return (e1 && e2);
}
inline void clist_contour::DumpPlane(UINT iPlane) const
{
cline_strip_list::const_iterator pos;
UINT i;
cline_strip* pStrip;
/*_ASSERT_(iPlane>=0,"clist_contour::DumpPlane");*/
_ASSERT_(iPlane<get_number_of_planes(),"clist_contour::DumpPlane::0");
_TRACE_(_TT("Level : %d"),get_plane(iPlane));
_TRACE_(_TT("Number of strips : %d\r\n"),m_vStripLists[iPlane].size());
_TRACE_(_TT("i np start end xstart ystart xend yend\r\n"));
for (pos = m_vStripLists[iPlane].begin(), i=0; pos != m_vStripLists[iPlane].end(); pos++, i++)
{
pStrip=*pos;
_ASSERTP_(pStrip,"clist_contour::DumpPlane::1");
_TRACE_(_TT("%d %d %d %d %g %g %g %g\r\n"),i,pStrip->size(),pStrip->front(),pStrip->back(),
get_xi(pStrip->front()),get_yi(pStrip->front()),
get_xi(pStrip->back()),get_yi(pStrip->back()) );
}
}
inline double clist_contour::Area(cline_strip* Line)
{
// if Line is not closed, return 0;
double Ar = 0, x, y, x0,y0,x1, y1;
int index;
cline_strip::iterator pos;
pos = Line->begin();
index = (*pos);
x0 = x = get_xi(index);
y0 = y = get_yi(index);
pos ++;
for(;pos!=Line->end();pos++)
{
index = (*pos);
x1 = get_xi(index);
y1 = get_yi(index);
// Ar += (x1-x)*(y1+y);
Ar += (y1-y)*(x1+x)-(x1-x)*(y1+y);
x = x1;
y = y1;
}
//Ar += (x0-x)*(y0+y);
Ar += (y0-y)*(x0+x)-(x0-x)*(y0+y);
// if not closed curve, return 0;
if ((x0-x)*(x0-x) + (y0-y)*(y0-y)>20*(m_dDx*m_dDx+m_dDy*m_dDy))
{
Ar = 0;
_TRACE_(_TT("# open curve!\n"));
}
//else Ar /= -2;
else Ar/=4;
// result is \int ydex/2 alone the implicit direction.
return Ar;
}
inline double clist_contour:: EdgeWeight(cline_strip* pLine, double R)
{
cline_strip::iterator pos;
int count = 0,index;
double x,y;
for(pos = pLine->begin(); pos!=pLine->end(); pos++)
{
index = (*pos);
x = get_xi(index);
y = get_yi(index);
if (fabs(x) > R || fabs(y) > R)
count ++;
}
return (double)count/pLine->size();
}
//G.Barrand : from .h to .cxx to avoid _ASSERT_ in .h
inline cline_strip_list* clist_contour::get_lines(unsigned int iPlane) {
/*_ASSERT_(iPlane>=0);*/
_ASSERT_(iPlane<get_number_of_planes(),"clist_contour::get_lines");
return &m_vStripLists[iPlane];
}
// Added by L.Garnier
inline bool clist_contour::SpecialCompactStripCase(double aXfront,double aXback,double aYfront,double aYback,double actualHeight)
{
// To solve the case of a list of strips
// which appeared to be open but should correspond to a closed
// contour.
// With the today generate() algorithm, it appears that we fall
// on this case when the begin and end points
// are on a horizontal or vertical line.
// (case where front()->x == back()->x or front()->y == back()->y).
// We try to detect in this method this situation and decide to close
// or not the line. To do that we check the heigth of intermediate
// points to see if there are on the same contour; if so we close
// the line (and return true), if not we do nothing (and return false).
// check if we could realy close it
float marge = 1; // *m_dDy or *m_dDx. 1 seems to be good and normal, but why
// not 2 in certain cases???
double distToNext =0;
// try to get the correct hight
if (get_plane(0)>= actualHeight) {
return false;
}
if (get_number_of_planes() >1){
distToNext = get_plane(1)-get_plane(0);
} else {
return false;
}
if ((aYback-aYfront) == 0) {
double temp;
double av;
double eg;
double ap;
if (aXfront==m_pLimits[0] && aXback == m_pLimits[1]) return false;
if (aXfront==m_pLimits[1] && aXback == m_pLimits[0]) return false;
if (aXfront > aXback ) {
temp = aXfront;
aXfront = aXback;
aXback = temp;
}
for(double check=aXfront+m_dDx;
check<aXback;
check+=m_dDx) {
av = ((*m_pFieldFcn)(check,aYback-marge*m_dDy,m_pFieldFcnData)-actualHeight);
eg = ((*m_pFieldFcn)(check,aYback,m_pFieldFcnData)-actualHeight);
ap = ((*m_pFieldFcn)(check,aYback+marge*m_dDy,m_pFieldFcnData)-actualHeight);
if ((av>distToNext) && (ap>distToNext) && (eg>distToNext)) {
return false;
} else if ((av<0) && (ap<0) && (eg<0)) {
return false;
}
}
return true;
} else if ((aXback-aXfront) == 0) {
double temp;
double av;
double eg;
double ap;
if (aYfront==m_pLimits[3] && aYback == m_pLimits[2]) return false;
if (aYfront==m_pLimits[2] && aYback == m_pLimits[3]) return false;
if (aYfront > aYback ) {
temp = aYfront;
aYfront = aYback;
aYback = temp;
}
for(double check=aYfront+m_dDy;
check<aYback;
check+=m_dDy) {
av = ((*m_pFieldFcn)(aXback-marge*m_dDx,check,m_pFieldFcnData)-actualHeight);
eg = ((*m_pFieldFcn)(aXback,check,m_pFieldFcnData)-actualHeight);
ap = ((*m_pFieldFcn)(aXback+marge*m_dDx,check,m_pFieldFcnData)-actualHeight);
if ((av>distToNext) && (ap>distToNext) && (eg>distToNext)) {
return false;
} else if ((av<0) && (ap<0) && (eg<0)) {
return false;
}
}
return true;
}
return false;
}
}
#endif
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