Heightfield with Image Sampler

Hi,

I am trying to generate a height field using the image sampler. The image does not seem to be mapping to the surface correctly and I am not sure why. Been scratching my head on this one for a while, and I think it is a simple fix. Can anyone help me?

Thanks,

Ron

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Permalink Reply by Ron Shvartsman on October 27, 2011 at 2:59pm

Have no fear... I have resolved the issue.

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Permalink Reply by MilanK on May 11, 2012 at 5:36pm

Hey, i have similar problem..

i trying to map image on surface (similar like yours, i put .3dm so toy can try)?

I think it simple, but i couldnt make it.

I tryed with surface division..but im stuck..

Thanks!

Attachments:

mapping on surf.3dm, 33 KB

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Permalink Reply by Ron Shvartsman on May 11, 2012 at 6:22pm

Hi,

Your rhino file does not tell me much a there is no associating ghx file. One thing I can tell you straight off, is that you are better off working with a mesh. Mesh contain less information than NURBS and can have practically any topology.

All you need to do is send the vertices of your mesh into the image sampler and use the output values to move the vertices along the vector(s) of your choice.

I will try to dig up the old file but I fear it may be lost... in the abyss.

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Permalink Reply by Michael Pryor on May 11, 2012 at 10:03pm

how to properly set up an image sampler so the image always fits to the surface. It is just as easy with NURBS, mesh, to me
is not desired as it had limited editing afterwards. just connect image sample output to an amplitude component with a vector direction and connect that to the vector in move. http://formularch.blogspot.com/2012/04/gh-image-sample.html