algorithmic modeling for Rhino
No rendering, no post-processing, images are grasshopper previews.
Animation in comments.
Ive been playing with previews a little bit in past, but seeing Andrews almost ambient occlusion shading. http://www.grasshopper3d.com/video/heads-up-display-with-human
I thought i would try lighting effects. This just works on mesh rays to the light source, determining whether they should be light or dark. One issue here is that the shadows should be sharper where its closer, instead of blurrier.
www.tyrertecture.com
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I didn't actually do any mapping, though that may have been easier. I cant totally remember the finer points, but essentially I started with maybe an icosahedron, weaverbird 'loop' subdivided it a few times. Then created a simple 'S' shape curve along each mesh edge. Then used exoskeleton to mesh all the curves. More effort went into the light and shadow effects than the actual shape.
Hi Nick, I am also trying to map some pattern on the sphere but it doesn't work properly. did you map pattern on the sphere directly or use other polyhedron surface? Can you give me some hints?
Nick - You're right, it could be done by just taking a line from a point on the plane to the top of the sphere and intersecting it to get the corresponding point on the sphere.
Vicente, i'm not sure i quite follow. I remember your post about AO, it was very helpful. but i haven't tried to recreate that, i had just never considered using a background mesh to enhance the effects that i was doing on the main object.
Daniel, i had not seen those particular stereographic sculptures before, its an interesting concept, and i may be mistaken, but should be alarmingly simple to create. Did you have a blog post about it a few years ago?
As Andrew suggested, in this animation http://www.grasshopper3d.com/video/more-dla first I had proper ambient occlusion by intersecting several rays per vertex in random directions (as I did here, also in one of your images) but then realized a single ray plus mesh blur looked good enough and was much much faster (you commented on the definition, you must have missed the AO part).
Nice!
Have you seen these stereographic projection sculptures by Henry Segerman:
on second thought you could also just use "blur mesh" and then do a weighted interpolation between the blurred mesh colors and the sharp mesh colors
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