covering a surface with an image?

Any tips on how to cover a surface with an image? We don't want to sample a small part of the image using image sampler or color different regions different colors from a sampling. Rather, we want to put the full image on the full surface (at least as close as possible). Imagine like in Times Square where the entire face of a building projects an advertisement. We want to fill the roof of a building with an image.

Thanks! Lili and Christina

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Permalink Reply by Systemiq on August 5, 2011 at 4:45pm

The easiest solution is probably to bake your surface and edit the properties in Rhino (select surface, hit F3, go to Material, assign by Basic, check Texture, load a map file, play with tiling settings).

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Permalink Reply by Christina Cogdell on August 5, 2011 at 4:50pm

Thanks, but unfortunately our building surface is a dynamic surface in grasshopper that forms around a moveable point, so it can't be baked into rhino and still be flexible/dynamic. Is there any way to do this easily only in grasshopper?

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Permalink Reply by Andrew Heumann on August 5, 2011 at 5:14pm

Not as far as I know. I suspect the best you could do would be to mesh your surface very densely and color the vertices according to an image sampler.

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Permalink Reply by Systemiq on August 5, 2011 at 5:33pm

Is your project some type of interactive installation or performance ?

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Permalink Reply by Andrew Heumann on August 6, 2011 at 6:12pm

Something like this works nicely, and is quite fast:

Attachments:

image_on_srf.gh, 1.8 MB

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Permalink Reply by Michael Pryor on August 6, 2011 at 7:08pm

interesting

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Permalink Reply by Martin Miller on August 5, 2011 at 7:16pm

As with any digital image it is only a set of samplings broken into pixels and then your eye fills in the blends between different color pixels. You'd have to use the image sampler and subdivide the surface to match the pixel grid, this will give you a surface that is fully accurate to the original image, though it may also give you a very heavy and slow surface, lastly you preview to in the dynamic grasshopper form.

good luck

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Permalink Reply by Christina Cogdell on August 7, 2011 at 2:20pm

Thanks, everyone. I'll try it. Lili and I have a class project that requires the dynamic/moveable design part, so it's not a performance or interactive installation outside of class. But it's good to learn more about grasshopper and I'm totally impressed with the generosity of people in this forum. Thanks!