This file contains the definition of a set of n-dimensional points with integer coordinates and several operations on such a set. More...
#include "chomp/system/config.h"#include "chomp/system/textfile.h"#include <iostream>#include <fstream>#include <ctime>#include <cstdlib>#include <cctype>Go to the source code of this file.
Classes | |
| class | chomp::homology::psethashstat |
| This is a small class used only to collect and display statistics on how successful the hashing procedures were. More... | |
| class | chomp::homology::tPointset< coordtype > |
| This class represents a set of points in R^n with integer coordinates. More... | |
| class | chomp::homology::tNeighbors< coordtype > |
| This class can be used for iterating point's neighbors. More... | |
| class | chomp::homology::tRectangle< coordtype > |
| This class can be used for iterating a rectangular set of points, given its left and right bound. More... | |
Namespaces | |
| namespace | chomp |
This namespace contains the entire CHomP library interface. | |
| namespace | chomp::homology |
This namespace contains the core of the homology computation procedures and related classes and templates contained in the CHomP C++ library. | |
Defines | |
| #define | INSIDE 1 |
| #define | OUTSIDE 0 |
| #define | CELL 0 |
| #define | CUBE 1 |
Typedefs | |
| typedef short int | chomp::homology::coordinate |
| The default type of coordinates. | |
| typedef tPointset< coordinate > | chomp::homology::pointset |
| The pointset class with the default type of coordinates. | |
| typedef tNeighbors< coordinate > | chomp::homology::neighbors |
| The neighbors class with the default type of coordinates. | |
| typedef tRectangle< coordinate > | chomp::homology::rectangle |
| The rectangle class with the default type of coordinates. | |
Functions | |
| template<class coordtype > | |
| int | chomp::homology::thesame (const coordtype *c1, const coordtype *c2, int dim) |
| Compare two points. Returns true iff they have the same coordinates. | |
| template<class coordtype > | |
| void | chomp::homology::copycoord (coordtype *destination, const coordtype *source, int dim) |
| Copies the coordinates of one point to another. | |
| template<class coordtype > | |
| void | chomp::homology::wrapcoord (coordtype *destination, const coordtype *source, const coordtype *wrap, int dim) |
| Wraps coordinates stored in 'c' accordint to the wrap table 'wrap' and store the result in the table called 'result'. | |
| bool | chomp::homology::numberisprime (unsigned n) |
| Verifies if the given number is a prime number. | |
| unsigned | chomp::homology::ceilprimenumber (unsigned n) |
| Computes the smallest prime number greater than or equal to the given number. | |
| template<class coordtype > | |
| int_t | chomp::homology::pointhashkey (const coordtype *c, int dim, int_t hashsize) |
| Generates the main hashing key for points. | |
| template<class coordtype > | |
| int_t | chomp::homology::pointhashadd (const coordtype *c, int dim, int_t hashsize) |
| Generates the second hashing key for points. | |
| template<class coordtype > | |
| coordtype | chomp::homology::rounddown (double x) |
| Rounds down the given real number to an integral type. | |
| template<class coordtype > | |
| void | chomp::homology::roundpoint (const double *p, coordtype *c, const double *grid, int dim) |
| Rounds down the double coordinates of a point to integer ones. | |
| template<class coordtype > | |
| void | chomp::homology::cubemiddle (coordtype *c, double *p, double *grid, int dim) |
| Computes the middle of a cube with its left lower etc. | |
| template<class coordtype > | |
| coordtype * | chomp::homology::allocatepoint (int dim, char *errormessage=NULL) |
| Allocate a point with 'new'. In case of failure throw an error message. | |
| template<class coordtype > | |
| int | chomp::homology::countneighbors (const tPointset< coordtype > &p, const coordtype *c, int which=1, int maxcount=0) |
| Counts how many neighbors of the point there are in the set, depending on 'which': 1 = in the set, 0 = out of the set. | |
| template<class coordtype > | |
| int | chomp::homology::countneighbors (const tPointset< coordtype > &p, const tPointset< coordtype > &q, const coordtype *c, int which=1, int maxcount=0) |
| Counts neighbors with respect to the union of the sets 'p' and 'q'. | |
| template<class coordtype > | |
| int | chomp::homology::attheborder (const tPointset< coordtype > &p, const coordtype *c) |
| Verifies if the point is at the border of a given set. | |
| template<class coordtype > | |
| int_t | chomp::homology::findboundarypoint (tPointset< coordtype > &p, int_t n, int direction=1) |
| Finds a boundary point starting at the given one. | |
| template<class coordtype > | |
| int_t | chomp::homology::findboundarypoint (tPointset< coordtype > &p, tPointset< coordtype > &q, int_t n, int direction=1) |
| Finds a point in 'p' at the boundary of the union of 'p' and 'q'. | |
| template<class coordtype > | |
| tPointset< coordtype > * | chomp::homology::computeboundary (tPointset< coordtype > &p) |
| Creates the set of all the boundary points with the 'new' operator. | |
| template<class coordtype > | |
| void | chomp::homology::computeboundary (tPointset< coordtype > &p, tPointset< coordtype > &b) |
| Computes the boundary points of the given set and adds them to the other set of points. | |
| template<class coordtype > | |
| void | chomp::homology::enhancepoint (tPointset< coordtype > &p, coordtype *c) |
| Enhances the set by adding the neighborhood of the point with given coordinates. | |
| template<class coordtype > | |
| void | chomp::homology::enhancepoint (tPointset< coordtype > &p, int_t n) |
| Enhances the set by adding the neighborhood of the point with given number. | |
| template<class coordtype > | |
| void | chomp::homology::enhance (tPointset< coordtype > &p) |
| Enhances the set of points by adding to it all the neighbors of all the points in the set. | |
| template<class coordtype > | |
| int | chomp::homology::read (textfile &f, coordtype *c, int maxdim) |
| Reads a point from a text file and removes a pair of parentheses, braces or brackets if present. | |
| template<class coordtype > | |
| int | chomp::homology::read (std::istream &in, coordtype *c, int maxdim) |
| Reads a point from a text file and removes a pair of parentheses, braces or brackets if present. | |
| template<class coordtype > | |
| int | chomp::homology::write (std::ostream &out, const coordtype *c, int dim, char parenthesis=40, char closing=0) |
| template<class coordtype > | |
| int | chomp::homology::readcubeorcell (std::istream &in, coordtype *left, coordtype *right, int maxdim, int *type=NULL) |
| Reads a cube or a cell from a text file. | |
| template<class coordtype > | |
| int_t | chomp::homology::read (textfile &f, tPointset< coordtype > &p, int_t first=0, int_t howmany=-1, coordtype *wrap=NULL, int maxdim=0, int quiet=0, tPointset< coordtype > *notthese=NULL) |
| Reads a set of points from an input stream (starting at the point given). | |
| template<class coordtype > | |
| int_t | chomp::homology::read (std::istream &in, tPointset< coordtype > &p, int_t first=0, int_t howmany=-1, coordtype *wrap=NULL, int maxdim=0, int quiet=0, tPointset< coordtype > *notthese=NULL) |
| Reads a set of points from an input stream (starting at the point given). | |
| template<class coordtype > | |
| int_t | chomp::homology::read (textfile &f, tPointset< coordtype > &p, coordtype *wrap, int maxdim, int quiet=0, tPointset< coordtype > *notthese=NULL) |
| Reads a set of points from an input stream (starting at the point given). | |
| template<class coordtype > | |
| int_t | chomp::homology::read (std::istream &in, tPointset< coordtype > &p, coordtype *wrap, int maxdim, int quiet=0, tPointset< coordtype > *notthese=NULL) |
| Reads a set of points from an input stream (starting at the point given). | |
| template<class coordtype > | |
| textfile & | chomp::homology::operator>> (textfile &f, tPointset< coordtype > &p) |
| Reads a set of points from an input stream (starting at the point given). | |
| template<class coordtype > | |
| std::istream & | chomp::homology::operator>> (std::istream &in, tPointset< coordtype > &p) |
| Reads a set of points from an input stream (starting at the point given). | |
| template<class coordtype > | |
| int_t | chomp::homology::write (std::ostream &out, tPointset< coordtype > &p, int_t first=0, int_t howmany=-1, int quiet=0) |
| Writes a set of points to a file (starting at the point given). | |
| template<class coordtype > | |
| std::ostream & | chomp::homology::operator<< (std::ostream &out, tPointset< coordtype > &p) |
| Writes a set of points to a file (starting at the point given). | |
| std::ostream & | chomp::homology::operator<< (std::ostream &out, const psethashstat &s) |
| Writes the information gathered in a hashing statistics collector object to an output stream. | |
| template<class coordtype > | |
| int | chomp::homology::countneighbors (const tPointset< coordtype > &p, const tPointset< coordtype > &q, coordtype *c, int which, int maxcount) |
| template<class coordtype > | |
| void | chomp::homology::computeboundary (const tPointset< coordtype > &p, tPointset< coordtype > &b) |
| template<class coordtype > | |
| int | chomp::homology::readcoordinates (std::istream &in, coordtype *coord, int maxdim, int closing) |
| Reads the coordinates of a point. | |
| template<class coordtype > | |
| int | chomp::homology::readcoordinates (std::istream &in, coordtype *coord, int maxdim) |
This file contains the definition of a set of n-dimensional points with integer coordinates and several operations on such a set.
The access to individual points is the same as to an array, with the operator []. However, the hashing tables are used for fast searching for specific points.
The type of coordinates is a template of the classes and functions defined in this file. It must be some integer-like type, e.g., short int or long int.
Additional data structures and functions related to the sets of points are also defined in this file, including classes for iterating neighborhoods of points and points in a specific rectangular range.
Definition in file pointset.h.
| #define CELL 0 |
Definition at line 342 of file pointset.h.
| #define CUBE 1 |
Definition at line 343 of file pointset.h.
| #define INSIDE 1 |
Definition at line 259 of file pointset.h.
Referenced by chomp::homology::countneighbors().
| #define OUTSIDE 0 |
Definition at line 260 of file pointset.h.
Referenced by chomp::homology::attheborder(), chomp::homology::countneighbors(), and chomp::homology::findboundarypoint().
1.7.1