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modified hyperbolic translaiton class to remove unnecessary function for matrix access; created new function to recover individual generator

This commit is contained in:
Iordan Iordanov 2018-09-10 10:37:27 +02:00
parent 8fb3cf2c13
commit 00d1ddcdfe
3 changed files with 38 additions and 54 deletions
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2
Periodic_4_hyperbolic_triangulation_2/demo/Periodic_4_hyperbolic_triangulation_2/include/internal/Qt/TriangulationGraphicsItem.h
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@ -146,7 +146,7 @@ public:
void initializeTranslations() {
std::vector<Matrix> gens;
T::Hyperbolic_translation::get_generators(gens);
T::Hyperbolic_translation::generators(gens);
std::vector<Matrix> tmp;
for (int j = 0; j < gens.size(); j++) {
tmp.push_back(gens[j]);

2
Periodic_4_hyperbolic_triangulation_2/demo/Periodic_4_hyperbolic_triangulation_2/include/internal/hyperbolic_billiards_animation.h
View File

@ -187,7 +187,7 @@ MainWindow::animate() {
// in this set with high probability.
//std::cout << " ..checking generators "; std::cout.flush();
std::vector<Hyperbolic_translation> gens;
Hyperbolic_translation::get_generators(gens);
Hyperbolic_translation::generators(gens);
for (int i = 0; i < gens.size(); i++) {
o = gens[i];
if (check(dt.construct_point(p,o)) == CGAL::ON_BOUNDED_SIDE) {

88
Periodic_4_hyperbolic_triangulation_2/include/CGAL/Hyperbolic_octagon_translation.h
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@ -36,15 +36,15 @@ class Hyperbolic_octagon_translation {
public:
typedef unsigned short int Word_letter;
enum Generator {
A = 0,
B_BAR,
C,
D_BAR,
A_BAR,
B,
C_BAR,
D
enum Generator: Word_letter {
A = 0,
B_BAR = 1,
C = 2,
D_BAR = 3,
A_BAR = 4,
B = 5,
C_BAR = 6,
D = 7
};
private:
@ -58,24 +58,33 @@ private:
static std::map<std::string, Matrix> gmap;
static std::map<std::string, Matrix> init_gmap() {
typedef typename std::pair<FT,FT> Complex;
typedef typename std::pair<Complex,Complex> Coefficient;
std::vector<Coefficient> mcf;
get_generator_coefficients(mcf);
// Create matrix coefficients
FT sq2 = CGAL::sqrt(FT(2));
FT xi = FT(1) + sq2;
FT rxi = CGAL::sqrt(xi);
// All matrices have the same _alpha
ECplx alpha(xi,FT(0));
std::map<std::string, Matrix> m;
vector<Matrix> g;
for (int i = 0; i < mcf.size(); i++) {
Complex a = mcf[i].first;
Complex b = mcf[i].second;
ECplx alpha(a.first, a.second);
ECplx beta(b.first, b.second);
g.push_back( Matrix(alpha, beta) );
// This vector holds the different _betas
std::vector< ECplx > beta;
beta.push_back( ECplx( sq2 * rxi, 0 ) );
beta.push_back( ECplx( rxi, rxi ) );
beta.push_back( ECplx( 0, sq2 * rxi ) );
beta.push_back( ECplx( -rxi, rxi ) );
beta.push_back( ECplx( -sq2 * rxi, 0 ) );
beta.push_back( ECplx( -rxi, -rxi ) );
beta.push_back( ECplx( 0, -sq2 * rxi ) );
beta.push_back( ECplx( rxi, -rxi ) );
std::vector<Matrix> g;
for (int i = 0; i < 8; i++) {
g.push_back(Matrix(alpha, beta[i]));
}
std::map<std::string, Matrix> m;
m["_"] = Matrix();
m["0527"] = g[A]*g[B]*g[C]*g[D];
@ -215,8 +224,11 @@ public:
return _wrd.to_string();
}
static Self generator(const Word_letter wl) {
return Self(wl);
}
static void get_generators(std::vector<Self>& gens) {
static void generators(std::vector<Self>& gens) {
gens.push_back(Self(A));
gens.push_back(Self(B_BAR));
gens.push_back(Self(C));
@ -227,34 +239,6 @@ public:
gens.push_back(Self(D));
}
static void get_generator_coefficients(std::vector< std::pair< std::pair<FT,FT>,
std::pair<FT,FT> > >& gens) {
typedef typename std::pair<FT,FT> Complex;
typedef typename std::pair<Complex,Complex> Matrix;
FT sq2 = CGAL::sqrt(FT(2));
FT xi = FT(1) + sq2;
FT rxi = CGAL::sqrt(xi);
Complex alpha(xi,FT(0)); // all matrices have the same _alpha
// This vector holds the different _betas
std::vector< Complex > beta;
beta.push_back( Complex( sq2 * rxi, 0 ) );
beta.push_back( Complex( rxi, rxi ) );
beta.push_back( Complex( 0, sq2 * rxi ) );
beta.push_back( Complex( -rxi, rxi ) );
beta.push_back( Complex( -sq2 * rxi, 0 ) );
beta.push_back( Complex( -rxi, -rxi ) );
beta.push_back( Complex( 0, -sq2 * rxi ) );
beta.push_back( Complex( rxi, -rxi ) );
for (int i = 0; i < 8; i++) {
gens.push_back(Matrix(alpha, beta[i]));
}
}
};