Hi,

I have just come back to povray after about 7 years and it just seems to get
better and better!

Anyway, my problem is this.

I wish to apply a texture and put a gif on top with some transparent
(filtered) colours. However, this does not seem to work - please help.

Ths colour (#140) is transparent if I comment out the first texture but
shows up in the second.

My code -

texture {
      pigment {
   granite
   colour_map {
    [0.0 colour rgb <0.95,0.98,1>]
    [0.2 colour rgb <0.95,0.98,1>]
    [0.4 colour rgb <0.92,0.93,0.97>]
    [0.8 colour rgb <0.89,0.92,0.95>]
    [1.0 colour rgb <0.95,0.98,1>]
   }
  }
}
texture {
        pigment {
                image_map {
                           gif "logo3.gif" once
                           filter 140, 1.0
                           }
                rotate <0,-90,0>
                scale 1
                translate <0,4.2,0.35>
               }
}

I am using version 3.5 Unix (.Linux.gcc)


Thanks in advance.

David

Post a reply to this message

"David" <dh2### [at] iucrorg> wrote in message
news:web.3f0e7f374965b1c45c8e72650@news.povray.org...
> I have just come back to povray after about 7 years and it just seems to
get
> better and better!

Welcome back. Quite a hiatus from POV-Ray, glad you found your way to here.

> I wish to apply a texture and put a gif on top with some transparent
> (filtered) colours. However, this does not seem to work - please help.
>
> Ths colour (#140) is transparent if I comment out the first texture but
> shows up in the second.

It could be that index 140 isn't pure white (in POV terms being:
<255,255,255>/255) and so not doing as you might be expecting. The keyword
'transmit' might be needed, instead of 'filter'.

> texture {
>       pigment {
>    granite
>    colour_map {
>     [0.0 colour rgb <0.95,0.98,1>]
>     [0.2 colour rgb <0.95,0.98,1>]
>     [0.4 colour rgb <0.92,0.93,0.97>]
>     [0.8 colour rgb <0.89,0.92,0.95>]
>     [1.0 colour rgb <0.95,0.98,1>]
>    }
>   }
> }
> texture {
>         pigment {
>                 image_map {
>                            gif "logo3.gif" once
>                            filter 140, 1.0
>                            }
>                 rotate <0,-90,0>
>                 scale 1
>                 translate <0,4.2,0.35>
>                }
> }
>
> I am using version 3.5 Unix (.Linux.gcc)

Post a reply to this message

Hughes, B. wrote:
>"David" <dh2### [at] iucrorg> wrote in message
>news:web.3f0e7f374965b1c45c8e72650[at]news.povray.org...
>> I have just come back to povray after about 7 years and it just seems to get
>> better and better!
>
>Welcome back. Quite a hiatus from POV-Ray, glad you found your way to here.

Thank you I am very please to be here again.

>
>> I wish to apply a texture and put a gif on top with some transparent
>> (filtered) colours. However, this does not seem to work - please help.
>>
>> Ths colour (#140) is transparent if I comment out the first texture but
>> shows up in the second.
>
>It could be that index 140 isn't pure white (in POV terms being:
><255,255,255>/255) and so not doing as you might be expecting. The keyword
>'transmit' might be needed, instead of 'filter'.
>

Thanks! Using transmit worked! As an aside - It seems the color doesn't have
to be white - the colour I made transparent was pure red.

Thanks again!

Best wishes,

David

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