On 06/21/2013 09:47 AM, Stephen wrote:
> On 21/06/2013 1:25 PM, James Holsenback wrote:
>> then maybe the once keyword isn't appropriate
>
> Taking into account that the label does not use the full circumference
> of a cylinder. I created a CSG intersection and tried to map that. I
> found it very difficult to get the scaling right. My usual method of
> doing this is to pad the outside of the image with a transparent colour
> so that there are no transformations to worry about. Only working out
> the size of the image within an image. I've never been happy with doing
> that, though.
>
> So I used a bi-cubic patch and planer mapping, that worked better.
>
> I would like to see an example using cylindrical mapping so that image
> was fully visible on only part of the surface.
>

a little more information on the topic:

http://wiki.povray.org/content/Knowledgebase:Language_Questions_and_Tips#Topic_15

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