Thomas de Groot <tho### [at] degrootorg> wrote:
> On 8-3-2018 8:21, mathzhaoliang wrote:
> >
> > This is my work here:
> >
> > https://github.com/zemora/penrose_rubic/blob/master/penrose.png?raw=true
> >
> > I'm not very satified with it because I think it's not as realistic as I want. I
> > tried to reproduce the image here:
> >
> > http://scorpius.github.io/large/pov-3puzzles.jpg
> >
> > but my work is still not as good as there. One problem may be with the "grout",
> > I used plain White plane and
> >
> > { ambient 0.1 diffuse 0.6 specular 0.6 roughness 0.1}
>
> Where the grout is concerned, you could use a normal with your texture.
> Example:
>
> plane {
>    y, 0
>    texture {
>      pigment {rgb 1}
>      finish {
>        ambient 0
>        diffuse 0.6
>        specular 0.6
>        roughness 0.1
>      }
>      normal {
>        granite 0.5
>        scale 0.0001
>      }
>    }
> }
>
> If you are using version 3.7 and up, I suggest you always use ambient 0
> (or leave it out of the finish). You can vary the strength of the
> granite normal by increasing/decreasing the value. The scale in the
> example is set for micronormals. Play with it by increasing/decreasing
> the value until you are satisfied.
>
> --
> Thomas


I'm using 3.7 and if ambient is 0 then the grout in the shadow are all black...

Post a reply to this message