Hi, I'm trying to render a surface I exported from a VTK visualisation software,
but there are some strange lights under the surface

The bottom part of my figure is here:

https://s32.postimg.org/7y35aegp1/sample.png


I'm using this settings at the beginning of my POV file

#include "rad_def.inc"
#include "colors.inc"

// For the mesh2 textures:
#declare my_texture = finish { phong 1 phong_size 20 ambient 0
                                   reflection{metallic 0}
                              };

global_settings {
      max_trace_level 30
      assumed_gamma 1.5
      radiosity { Rad_Settings( Radiosity_Fast, on, on ) }
      photons { spacing 0.005 }
      }

background { color rgb <1.000000, 1.000000, 1.000000>}

camera {
 perspective
 location <8.196152, 8.196152, 8.196152>
 sky <0.000000, 0.000000, 1.000000>
 right <-1, 0, 0>
 angle 30.000000
 look_at <0.000000, 0.000000, -0.000000>
}

light_source { <-3, -3, 4.>
               color White
               area_light <6, 0, 0>, <0, 6, 0>, 6, 6
               area_illumination on
               photons {area_light}
               jitter
               // adaptive 1
             }

plane
{
    <0, 0, 1>, -1
    texture{ pigment { color rgb < 1, 1, 1 > }
             finish{ ambient 0 diffuse 0.5 }
         }
}

....


Is there a way to fix that? I tried increasing the max_trace_level but it
doesn't change, neither with the photons although I didn't specify photons in
the main figure (it gets too slow)

Post a reply to this message