IMP logo
IMP Reference Guide  develop.d247202c1c,2019/10/23
The Integrative Modeling Platform
grid.cpp

Show some of the basics of using a grid from C++.Copyright 2007-2019 IMP Inventors. All rights reserved.

/**
* \example grid.cpp
* \brief Show some of the basics of using a grid from C++.
*
* Copyright 2007-2019 IMP Inventors. All rights reserved.
*
*/
#include <IMP/flags.h>
#include <algorithm>
int main(int argc, char *argv[]) {
"Show some of the basics of using a grid from C++.");
IMP::algebra::Vector3D(10, 10, 10));
// declare a grid covering the space 0 to 100 with a cell size of 1 and
// default value of 0
// unfortunately, due to swig GridD takes lots of redundant template
// parameters
double> Grid;
Grid grid(1, bb, 0);
// fill it with a gradient
IMP_FOREACH(Grid::Index i, grid.get_all_indexes()) {
IMP::algebra::Vector3D c = grid.get_center(i);
}
// we can get smooth values at off-grid points
// it is boring below .5
std::cout << "Smooth" << std::endl;
for (double x = .5; x < 4; x += .1) {
grid, IMP::algebra::Vector3D(x, x, x));
std::cout << vo << " ";
}
std::cout << std::endl;
// we can get chunky values at off-grid points instead
std::cout << "Chunky" << std::endl;
for (double x = .5; x < 4; x += .1) {
double vo = grid[IMP::algebra::Vector3D(x, x, x)];
std::cout << vo << " ";
}
std::cout << std::endl;
return EXIT_SUCCESS;
}