James Holsenback <nom### [at] nonecom> wrote:
> On 02/25/2012 12:27 PM, sniper wrote:
> > Hello!
> >
> > I have made an object, say dodecahedron. I defined vertices, then faces and
> > finally the cell. Then I transform the cell to an object. And then I scaled and
> > rotated it. Is there a possibility to transform back changed object for
> > achieving its coordinates of vertices? If no, how I could do this
> > mathematically? Thanks.
> >
> >
> there are some functions that you can use: vtransform (i think) take a
> look at descriptions in the docs AND in the distribution include file
> (transform.inc) ... there's some good stuff in there ;-)
>
> http://wiki.povray.org/content/Documentation:Reference_Section_7.5#transforms.inc
>
> but usually most folks (not all) do scaling, rotating with the object at
> <0,0,0> the place it ...

Thank you for the answer. I have studied these references but it seems no
possibility to achieve the coordinates of vertices of an object.
I have another idea, but also need help in its realization. I have coordinates
of a dodecahedron and its centroid, say <x,y,z>, so i could calculate the
distance from a given point to the centroid. I want to scale the dodecahedron
twice and achieve new coordinates of the vertices of dodecahedron. So the
distance between centroid in <x,y,z> and a given new point increases also twice.
How I could specify the direction?

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