 | | | pintable displacement | pintable displacement 2004-05-13 - By Graham D Clark
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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/paramProjector/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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