I'm using POV-Ray 3.1g.  The documentation includes an example of a surface
of revolution (see "Surface of Revolution Object" under the help index) for
creating a goblet.  The image shown in the help file shows both front and
back sides of the object reflecting, but when I run the same code I get
reflection from the front only.
Is there some magic configuration option for enabling reflection from both
sides of a surface?  What am I missing?

Thanks,

Mark Harris

Post a reply to this message

"Mark Harris" <mh### [at] csappstateedu> wrote :
>
> Is there some magic configuration option for enabling reflection from both
> sides of a surface?  What am I missing?

    I just looked at it and it's not you, it's the sample code. They seem to
have forgotten to use the "open" command after the point list. That leaves a
cap on the surface which is reflecting the bluish gray background.

    <3.0,  10.0>,
    <4.0,  11.0>
    open

    ^^^^ add that and it should help.

Post a reply to this message

Mark Harris wrote:
> 
> I'm using POV-Ray 3.1g.  The documentation includes an example of a surface
> of revolution (see "Surface of Revolution Object" under the help index) for
> creating a goblet.  The image shown in the help file shows both front and
> back sides of the object reflecting, but when I run the same code I get
> reflection from the front only.
> Is there some magic configuration option for enabling reflection from both
> sides of a surface?  What am I missing?

the "open" keyword, if I understand correctly your question.
As provided in the help file, the sor is ended with an horizontal
disc at both end.

Post a reply to this message