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| 00:17.49 | Notify | 03BRL-CAD:starseeker * 64854 (brlcad/trunk/include/rt/CMakeLists.txt brlcad/trunk/include/rt/tree.h): More breakout |
| 00:19.03 | starseeker | shoot, andrei_il left |
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| 02:05.58 | starseeker | brad_h: your email address didn't accept a return email, fyi |
| 02:06.25 | starseeker | brad_h: I can try to be on IRC around that time for discussion, but my internet is a bit spotty |
| 02:06.53 | starseeker | brad_h: remember though that the technical mentoring is not just by your assigned mentor but by the community |
| 02:07.26 | starseeker | lots of smart people around here, you'll probably want to listen to them more than to me ;-) |
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| 14:37.10 | dracarys983 | d_rossberg, brlcad, starseeker, ``Erik : I'm trying to find the SA of a hyperboloid made of one sheet. Now, I have a formula for SA of a hyperboloid as a surface of revolution. |
| 14:38.19 | dracarys983 | The integral for SA of hyperboloid which is not a surface of revolution is very complicated. So, I need to make a co-ordinate transformation to get the integral in one variable. |
| 14:38.42 | dracarys983 | It then becomes a surface of revolution and I can apply the formula. |
| 14:40.00 | dracarys983 | My problem is : How do I write the code for making the co-ordinate transformation, calculating the SA and returning back to original co-ordinate system? |
| 14:43.55 | dracarys983 | Actually the transformation part is bugging me. |
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| 15:52.53 | d_rossberg | dracarys983: that's the question :) sounds like some days or more of research |
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| 15:53.55 | d_rossberg | i don't know if there is a method to transform areas with coordinate transformations |
| 15:55.10 | d_rossberg | i did once something similar with cuboids, but these give you a rather bad approximation if you are interested in exact results |
| 15:57.03 | dracarys983 | d_rossberg: Approximation again. Ah. |
| 15:57.21 | dracarys983 | d_rossberg: I guess I can transform the points / vectors of the internal hyp structure that are required in the formula and apply the formula? That won't work? |
| 15:58.32 | d_rossberg | I'm afraid that you can transform the formula - but not the surface |
| 16:00.01 | d_rossberg | or you find a reference/literature somewhere which describes how to do it |
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| 21:18.11 | brad_h | starseeker: got it. as for email, is there a better way of exchanging email instead of thru soureforge? |
| 21:24.26 | ``Erik | most email should be going through the mailing lists to keep everything open |
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| 22:53.17 | brlcad | starseeker: writing our own static analysis checks, coming soon to a theater near you! ... https://bbannier.github.io/blog/2015/05/02/Writing-a-basic-clang-static-analysis-check.html |
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