sandbox/Antoonvh/distanceat.c
Distance attenuation
#include "grid/multigrid3D.h"
#include "view.h"
vector u[];
#define BVIEW 1
#include "particles.h" // For init_part. function
int main() {
X0 = Y0 = Z0 = -L0/2.;
init_grid (4); //a 4 x 4 x 4 grid;
init_particles_in_cells();
scatter (loc, s = 45);
save ("nja.png");
free (loc);
}