// Example particle systems // smoke particle_system Examples/Smoke { material Examples/Smoke particle_width 0.02 particle_height 0.02 cull_each true quota 500 billboard_type point sorted true // Area emitter emitter Point { angle 11 emission_rate 15 time_to_live 4 direction 0 1 0 velocity_min 1.5 velocity_max 2.4 } affector ColourImage { image examples/media/particle/smokecolors.png } affector Rotator { rotation_range_start 0 rotation_range_end 360 rotation_speed_range_start -60 rotation_speed_range_end 200 } affector Scaler { rate 1 } }