Re: pfCopy or pfClone? What happen to pfCopyGSet?

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John Rohlf (jrohlf++at++tubes)
Wed, 23 Aug 95 17:54:16 PDT

>
>
> Hi,
>
> I am considering options to copy or clone a terrain database to have
> one on the top of the other. The purpose of this is to attach two
> different textures to the two separate but geometrically equal terrains.
> Its nice to be able to pfClone the whole group and/or dcs of the terrain
> and move it a few meters up or down. Once I've cloned it can I change
> the terrain texture of one without changing the texture on the other? Can I
> get at the gset and gstate to do this?

        pfClone() is currently intended for instancing and does not
duplicate objects below pfGeodes, e.g, pfGeoSets. I suggest you
write your own traversal which clones the scene graph including
pfGeoSets and pfGeoStates.

> How about the option of using pfCopy? I can copy the Geode and the
> group but again how can I get the gstate to change the texture? Granted
> that this is possible, if I change the texture of the copy will it change
> the texture of the original?

        pfCopy is not yet implemented for pfNodes.

> Last one. I noticed that in the Performer 1.2 manual there is a brief
> reference to the the pfCopyGSet (pg 243) which it says that it can "Make a
> copy" of the GSet. However, online man pages does not have any
> reference to it. I suspect that this was omitted from the library but
> not the hardcopy manual pages. It sure would be nice to be able to copy
> the geometry sets so as to be able to create a new geode with a new
> gstate and thus a new texture. I tried to pfCopy the geometries but got
> a core dump.

        pfCopy will copy geosets but will not recursively copy
that which the geoset references.

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