71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
// Irregular packing example code
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//
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// Author : Chris H. Rycroft (LBL / UC Berkeley)
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// Email : chr@alum.mit.edu
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// Date : August 30th 2011
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#include "voro++.hh"
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using namespace voro;
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// Set up constants for the container geometry
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const double x_min=-6,x_max=6;
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const double y_min=-6,y_max=6;
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const double z_min=-3,z_max=9;
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// Golden ratio constants
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const double Phi=0.5*(1+sqrt(5.0));
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const double phi=0.5*(1-sqrt(5.0));
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// Set up the number of blocks that the container is divided
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// into.
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const int n_x=5,n_y=5,n_z=5;
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// Create a wall class that, whenever called, will replace the Voronoi cell
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// with a prescribed shape, in this case a dodecahedron
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class wall_initial_shape : public wall {
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public:
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wall_initial_shape() {
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// Create a dodecahedron
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v.init(-2,2,-2,2,-2,2);
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v.plane(0,Phi,1);v.plane(0,-Phi,1);v.plane(0,Phi,-1);
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v.plane(0,-Phi,-1);v.plane(1,0,Phi);v.plane(-1,0,Phi);
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v.plane(1,0,-Phi);v.plane(-1,0,-Phi);v.plane(Phi,1,0);
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v.plane(-Phi,1,0);v.plane(Phi,-1,0);v.plane(-Phi,-1,0);
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};
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bool point_inside(double x,double y,double z) {return true;}
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bool cut_cell(voronoicell &c,double x,double y,double z) {
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// Set the cell to be equal to the dodecahedron
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c=v;
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return true;
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}
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bool cut_cell(voronoicell_neighbor &c,double x,double y,double z) {
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// Set the cell to be equal to the dodecahedron
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c=v;
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return true;
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}
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private:
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voronoicell v;
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};
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int main() {
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// Create a container with the geometry given above. This is bigger
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// than the particle packing itself.
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container con(x_min,x_max,y_min,y_max,z_min,z_max,n_x,n_y,n_z,
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false,false,false,8);
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// Create the "initial shape" wall class and add it to the container
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wall_initial_shape(wis);
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con.add_wall(wis);
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// Import the irregular particle packing
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con.import("pack_irregular");
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// Save the particles and Voronoi cells in POV-Ray format
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con.draw_particles_pov("irregular_p.pov");
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con.draw_cells_pov("irregular_v.pov");
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}
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