 | | | pintable displacement | pintable displacement 2004-05-13 - By kim aldis
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Nice effect, Graham.
> -- --Original Message-- --
> From: owner-xsi@(protected)
> [mailto:owner-xsi@(protected)] On Behalf Of Graham D Clark
> Sent: 13 May 2004 11:48
> To: XSI@(protected)
> Subject: RE: pintable displacement
>
> Nice Ben.
>
> Probably not looking for a scripting solution but if so. (in
> Houdini even for simple pinatable it requires some
> expressions) Via scripting you can set the extrusion values
> by whatever, postion in camera view, or postion on grid, I
> assume you want the later, so retrieve the position values of
> each poly rative to the object in x and y and use that to
> retireive the rgb values of an image clip at that x,y (using
> getpixel or getpixel array) to drive the extrusion value.
>
> Actually here's the "original" pintable Houdini tutorial ;)
> with example file:
> http://www.sidefx.com/community/download/samples/pin_table/index.html
>
> Another way using camera projection in XSI instead of object space:
> http://www.grahamdclark.com/Studentresources/tutorials/paramPr
> ojector/fa
> cecb.mov
>
> -- ---- ---- ---- ---- ---- --
> http://www.grahamdclark.com
> 2nd hand TD
>
>
>
> > -- --Original Message-- --
> > From: owner-xsi@(protected)
> > [mailto:owner-xsi@(protected)] On Behalf Of Ben Kilgore
> > Sent: May 12, 2004 9:45 PM
> > To: XSI@(protected)
> > Subject: Re: pintable displacement
> >
> >
> > http://www.semiote.com/temp/pintable.jpg
> >
> > texture map is 4096x4096...mapped square to the grid.
> >
> > ben
> >
> > -- -- Original Message -- --
> > From: "Andras Ikladi" <kodiak@(protected)>
> > To: <XSI@(protected)>
> > Sent: Wednesday, May 12, 2004 4:32 PM
> > Subject: Re: pintable displacement
> >
> >
> > > + wrote:
> > >
> > > > because this is not a clean solution and would create unwanted
> > > > displacement noise on the geometry (wouldn't be
> perfectly sharp) i
> > > > guess. as i asked, i'm interested to know how i can drive the
> > > > displacement or extrusion of polygon faces (with the
> > merge-off like
> > > > way so they're independent) via displacement maps as seen on the
> > example.
> > > >
> > > Why not just use animated pushmap on a surface and a bunch
> > of instanced
> > > and surface constrained sticks?
> > > Or you could use Helge's tools.
> > > (i don't really know them personally, but i remember some
> > of them suited
> > > for this problem..
> > > like scatter and some animatable weighmaps)
> > >
> > > here is the original houdini tutorial btw:
> > > http://www.techimage.co.uk/pdfs/pinboard1.1.pdf
> > >
> > > Andras
> > >
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