5 ms·
better than that damned teapot.
by riffic 5y ago
better than that damned teapot.
- phkahler 5y agoThe teapot was actually designed with Bezier surfaces. That makes it a whole different animal.
- tinus_hn 5y agoThe teapot is a design, the bunny is a scan. That is the most important difference.
- dahart 5y agoWhat do you mean exactly? The teapot was "scanned" from a physical model, not designed from scratch. I'm quoting "scanned" because it was a manual process, and it'd be fair to say there was a little bit of design involved. But the primary distinction you made here between design and scan isn't really accurate without more qualification or explanation. You can see pictures of the original physical teapot model and the scan data (drawings) on the WP page https://en.wikipedia.org/wiki/Utah_teapot https://en.wikipedia.org/wiki/Utah_teapot
- jreese 5y agoThe page you link to even talks about it being a model rather than a scan: > It is a mathematical model of an ordinary Melitta-brand teapot > The teapot model was created in 1975 by early computer graphics researcher Martin Newell, a member of the pioneering graphics program at the University of Utah.[3] It was one of the first to be modeled (using bézier curves) rather than precisely measured.
- dahart 5y agoYes that's correct. It wasn't scanned in the typical meaning of "scan" at the time, by digitizing the vertices of a triangle mesh. But it also wasn't an original design from scratch - which is what calling it a "design" seems to imply. The Bezier curves were plotted out to match the reference model, the Melitta teapot, so it was in a sense, a manual eyeballed scan. Calling it a "design" as something in opposition to a scan just seems a bit misleading. There is some overlap of those two terms with the Utah Teapot. The shape wasn't an original design, just the topology and representation were, and the digitizing process was manual and approximate, right?
- boulos 5y agoRight. Both the teapot and Ivan’s VW are “manual scans”. The teapot even got “accidentally” stretched by Jim Blinn and most copies use that one. In searching for that evidence (Wikipedia says citation needed!), I rediscovered Frank Crow’s great write up from 1987 (which includes a scan of the graph paper!): https://www.computer.org/csdl/magazine/cg/1987/01/mcg1987010008/13rRUygT7ct https://www.computer.org/csdl/magazine/cg/1987/01/mcg1987010... aka https://s3.amazonaws.com/ieeecs.cdn.csdl.content/mags/cg/1987/01/mcg1987010008.pdf?AWSAccessKeyId=ASIA2Z6GPE73N5537GPZ&Expires=1622076613&Signature=WRPHAtVONvsOUoU%2B2nDvKKyJlrQ%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEJH%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJIMEYCIQD%2Bo%2FKPvCCVim7oYNGo8Csguo5elWTuETiG%2FQs1Zn9VEgIhAMmm9WFL6AOkoZjisxeTD8oPrgi0j0Bh%2FD3m3FP%2BolhzKp0CCDoQABoMNzQyOTA4NzAwNjYyIgytKu77mp6UMUBBucsq%2BgEVmDnKo%2BOCxS8KySy3Fft1sLdHhEpeZ0y78tL1%2FUA0aHTuyOFVfPbFBUzHNj9cG%2F2VwnkKyvTpoMyhliwWEAOWeJbJcYXAC9X4PU56vIJrbqfKn0l6WSrr6yt9RKYwiIwcJ%2BI2H%2BODL08jB7RFq5FyLKPQdneb4596a7PQS%2Fq5Ro5vxOWVrO7YaYmuBKTX25MTgvyHk1fgtHjbHpoKaqP9yw%2B%2BppOa0p5a99T3pTWHOL%2BFNks3S5eiVZPdnpF40HJnx%2F%2BbIt4W6edBgpm5Mf6oiz%2BCQgKXKKh1vbrjU9uYdgBZjBAvTXvqwSih8eAwA7A0msUTtsBmp1UdMMHRu4UGOpkBhE2jvDVX1FD93AMLYnQDMAI0hdj83s1Dy6x%2B4O1i%2BzGNyGOGc1e2HqBs6%2BieATKmXX0iOExuY1IaAnuTyLdbyJRz4xMoigdK%2BwzWUxW%2FIHDkUdYZ1WFMfEnv%2BPKVG1xrZvoAW894fOQvzkd0PWSlLO4%2Fplr5DNdX2B0YdkzEGHWwHiMe3z9Q4OS3Wv4dTgjFH0VCp2YwSdn2 https://s3.amazonaws.com/ieeecs.cdn.csdl.content/mags/cg/198...
- tinus_hn 5y agoPerhaps design is not the right word, it’s manually modeled. When you are using the model it doesn’t really matter whether there is a physics reference or not, the data from a manually built model is just pretty different from a scan. Like a drawing vs a photo.
- dahart 5y agoYeah manually modeled from reference seems like a perfectly fine summary. ‘Drawing’ as a one word summary still tends to imply a pure creative process and not a reproduction process. But, the article @boulos shared is the best description, and the article does describe it as a “sketch” next to a picture of the hand-plot on graph paper.
- paulpauper 5y agothe teapot was done 2 decades earlier. much more impressive technologically. think about trying to display pixelated graphics in 3d on 70s tech. mind blown.