#version 3.5; global_settings {assumed_gamma 1.0} camera {location <0, 0,-12.0> look_at 0 angle 30 } #declare Container_T= texture { pigment {rgbt <1,1,1,1>} finish {ambient 0 diffuse 0} } #declare Scale=2; box { //The reference <-1,-1,0>,<1,1,.3> hollow texture {Container_T} interior { media { intervals 1 samples 1,1 emission 1 } } translate <-2.1,0,0> } box { //Object scaled twice as big <-1,-1,0>,<1,1,.3> //looks different but same hollow //particle density texture {Container_T} interior { media { intervals 1 samples 1,1 emission 1 } } scale Scale translate<0,0,12> } box { //Object scaled twice as big <-1,-1,0>,<1,1,.3> //looks the same but particle hollow //density scaled down texture {Container_T} interior { media { intervals 1 samples 1,1 emission 1/Scale } } scale Scale translate<0,0,12> translate<4.2,0,0> }