frustum.pov
View Options

			#version 3.6;

			// Right-handed coordinate system in which the z-axis points upwards
			camera {
			location <20,-50,30>
			sky z
			right -0.3ximage_width/image_height
			up 0.3*z
			look_at <0,0,3>
			}

			// White background
			background{rgb 1}

			// Two lights with slightly different colors
			light_source{<-8,-20,30> color rgb <0.77,0.75,0.75>}
			light_source{<20,-15,5> color rgb <0.38,0.40,0.40>}

			// Radius of the Voronoi cell network, and the particle radius
			#declare r=0.025;
			#declare s=0.1;

			// Particles
			union{
			#include "frustum_p.pov"
			scale 10
			pigment{rgb <0.4,0.85,0.95>} finish{reflection 0.1 specular 0.3 ambient 0.42 metallic}
			}

			// Voronoi cells
			union{
			#include "frustum_v.pov"
			scale 10
			pigment{rgb <0.5,0.5,0.51>} finish{specular 0.3 ambient 0.42 reflection 0.4 metallic}
			}

lammps/lib/voro++/examples/walls/frustum.pov706c4ccdaefdlammm-master