//Surfaces with critical points //by Adam Coffman //June 2006 camera { location <-0.825,0.575,1.2> look_at <0,0, 0> } #include "colors.inc" background{White} poly { 4 < 2,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-2,0,0,0,0> sturm pigment { brick rgb <0,0,0,0,0> rgb <0,0,1,0,.6> brick_size <50,0.035,50> mortar 0.00475 translate <2,0.0010025,2> } bounded_by { cylinder{<0,3,0> <0,-3,0> 0.5 } } clipped_by { bounded_by } } light_source{<0.5,20,0> White} light_source{<-40,0,0.5> White shadowless} light_source{<40,0,0.5> White shadowless} light_source{<0,0.5,40> White shadowless}