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From: Bruce Sherwood <Bruce_S<herwood@nc...>  20071229 23:39:36

That's a spectacular demonstration of work that needs to be done on the beta version, as it takes 5 seconds (!) to render the scene on my laptop, whereas the display and motion are completely smooth in the production version of VPython. I've added this to the contributed section of vpython.org. Thanks! I deleted the unnecessary line that made the mouse cursor visible, since that's the default and this feature is as yet missing from the beta version, should someone wish to see the extreme slowness of the rendering. Bruce Sherwood Ron Adam wrote: > > > Bruce Sherwood wrote: >> Questions were asked recently about looking outward from the origin >> (or other location) and rotating the view of the surrounding scene. >> As an example of this kind of viewing, see look_around.py in the >> contributed section of vpython.org. >> >> Bruce Sherwood > > Here's a fun demo that uses rotating and spin I meant to submit some > time ago and never did. > > Enjoy, > Ron Adam >  > >  > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ >  > > _______________________________________________ > Visualpythonusers mailing list > Visualpythonusers@... > https://lists.sourceforge.net/lists/listinfo/visualpythonusers 
From: Bruce Sherwood <Bruce_S<herwood@nc...>  20071229 23:05:23

In a test version not yet released I've implemented essentially the scheme suggested by Scott David Daniels, and it works very well. Thanks! I found by timing measurements that a faster scheme with less penalty for the case of sqrt(array) looks like this: def sqrt(x): if type(x) is float: return mathsqrt(x) return numpysqrt(x) This scheme not only solves the problem but actually yields faster square roots of scalar arguments than numpy, by about a factor of 3. So what was conceived as a workaround is actually a performance enhancement. Bruce Sherwood Scott David Daniels wrote: > I (Scott David Daniels) wrote: > >> I'm not sure of the overhead here, but could something like this work? >> >> def sqrt(x): >> try: return math.sqrt(x) >> except TypeError: return numpy.sqrt(x) >> > > If it "kinda" works, the following addition to __init__ should work: > > from numpy import (ceil as _n_ceil, cos as _n_cos, cosh as _n_cosh, > exp as _n_exp, fabs as _n_fabs, floor as _n_floor, > fmod as _n_fmod, frexp as _n_frexp, hypot as _n_hypot, > ldexp as _n_ldexp, log as _n_log, log10 as _n_log10, > modf as _n_modf, sin as _n_sin, sinh as _n_sinh, > sqrt as _n_sqrt, tan as _n_tan, tanh as _n_tanh) > from math import (ceil as _m_ceil, cos as _m_cos, cosh as _m_cosh, > exp as _m_exp, fabs as _m_fabs, floor as _m_floor, > fmod as _m_fmod, frexp as _m_frexp, hypot as _m_hypot, > ldexp as _m_ldexp, log as _m_log, log10 as _m_log10, > modf as _m_modf, sin as _m_sin, sinh as _m_sinh, > sqrt as _m_sqrt, tan as _m_tan, tanh as _m_tanh) > def ceil(x): > try: return _m_ceil(x) > except TypeError: return _n_ceil(x) > def cos(x): > try: return _m_cos(x) > except TypeError: return _n_cos(x) > def cosh(x): > try: return _m_cosh(x) > except TypeError: return _n_cosh(x) > def exp(x): > try: return _m_exp(x) > except TypeError: return _n_exp(x) > def fabs(x): > try: return _m_fabs(x) > except TypeError: return _n_fabs(x) > def floor(x): > try: return _m_floor(x) > except TypeError: return _n_floor(x) > def fmod(x): > try: return _m_fmod(x) > except TypeError: return _n_fmod(x) > def frexp(x): > try: return _m_frexp(x) > except TypeError: return _n_frexp(x) > def hypot(x): > try: return _m_hypot(x) > except TypeError: return _n_hypot(x) > def ldexp(x): > try: return _m_ldexp(x) > except TypeError: return _n_ldexp(x) > def log(x): > try: return _m_log(x) > except TypeError: return _n_log(x) > def log10(x): > try: return _m_log10(x) > except TypeError: return _n_log10(x) > def modf(x): > try: return _m_modf(x) > except TypeError: return _n_modf(x) > def sin(x): > try: return _m_sin(x) > except TypeError: return _n_sin(x) > def sinh(x): > try: return _m_sinh(x) > except TypeError: return _n_sinh(x) > def sqrt(x): > try: return _m_sqrt(x) > except TypeError: return _n_sqrt(x) > def tan(x): > try: return _m_tan(x) > except TypeError: return _n_tan(x) > def tanh(x): > try: return _m_tanh(x) > except TypeError: return _n_tanh(x) > > Scott David Daniels > Scott.Daniels@... > > >  > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Visualpythonusers mailing list > Visualpythonusers@... > https://lists.sourceforge.net/lists/listinfo/visualpythonusers > 
From: Lenore Horner <lhorner@si...>  20071229 20:22:08

Try http://www.wiili.org/index.php/Main_Page. Lenore Horner On Dec 29, 2007, at 11:39 AM, John Brawley wrote: > >  Original Message  > From: <visualpythonusersrequest@...> >> Message: 6 >> Date: Fri, 28 Dec 2007 01:35:49 0500 >> From: Bruce Sherwood <Bruce_Sherwood@...> >> Subject: [Visualpythonusers] Wii interface >> >> A friend sent me the following link to very interesting work on using >> the Wii controller with a regular computer, in highly innovative >> ways: >> >> http://www.cs.cmu.edu/~johnny/projects/wii/ >> >> Bruce Sherwood > > Hi Bruce; > This link appears not to work. Backediting the URL to the .edu > domain > gets a page with many broken image links.... > I was interested in reading on the Wii controller linkedto a > computer, > but is there a way to get _to_ that article? > > Peace > JB > jb@... > Web: http://tetrahedraverse.com > > > >  >  > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Visualpythonusers mailing list > Visualpythonusers@... > https://lists.sourceforge.net/lists/listinfo/visualpythonusers 
From: Ron Adam <rrr@ro...>  20071229 20:19:18

Bruce Sherwood wrote: > Questions were asked recently about looking outward from the origin (or > other location) and rotating the view of the surrounding scene. As an > example of this kind of viewing, see look_around.py in the contributed > section of vpython.org. > > Bruce Sherwood Here's a fun demo that uses rotating and spin I meant to submit some time ago and never did. Enjoy, Ron Adam 
From: Bruce Sherwood <Bruce_S<herwood@nc...>  20071229 18:04:21

It worked yesterday.... If you search YouTube for johnny lee wii you'll find the presentations. I also found that procrastineering.com will get you to one of Johnny Lee's sites. Bruce Sherwood John Brawley wrote: >  Original Message  > From: <visualpythonusersrequest@...> > >> Message: 6 >> Date: Fri, 28 Dec 2007 01:35:49 0500 >> From: Bruce Sherwood <Bruce_Sherwood@...> >> Subject: [Visualpythonusers] Wii interface >> >> A friend sent me the following link to very interesting work on using >> the Wii controller with a regular computer, in highly innovative ways: >> >> http://www.cs.cmu.edu/~johnny/projects/wii/ >> >> Bruce Sherwood >> > > Hi Bruce; > This link appears not to work. Backediting the URL to the .edu domain > gets a page with many broken image links.... > I was interested in reading on the Wii controller linkedto a computer, > but is there a way to get _to_ that article? > > Peace > JB > jb@... > Web: http://tetrahedraverse.com > > > 
From: John Brawley <jb@te...>  20071229 17:43:31

 Original Message  From: <visualpythonusersrequest@...> > Message: 6 > Date: Fri, 28 Dec 2007 01:35:49 0500 > From: Bruce Sherwood <Bruce_Sherwood@...> > Subject: [Visualpythonusers] Wii interface > > A friend sent me the following link to very interesting work on using > the Wii controller with a regular computer, in highly innovative ways: > > http://www.cs.cmu.edu/~johnny/projects/wii/ > > Bruce Sherwood Hi Bruce; This link appears not to work. Backediting the URL to the .edu domain gets a page with many broken image links.... I was interested in reading on the Wii controller linkedto a computer, but is there a way to get _to_ that article? Peace JB jb@... Web: http://tetrahedraverse.com 
From: Bruce Sherwood <Bruce_S<herwood@nc...>  20071229 06:21:49

Questions were asked recently about looking outward from the origin (or other location) and rotating the view of the surrounding scene. As an example of this kind of viewing, see look_around.py in the contributed section of vpython.org. Bruce Sherwood 
From: Bruce Sherwood <Bruce_S<herwood@nc...>  20071229 02:19:59

Thanks for the suggestion. I'll look into this workaround. Bruce Sherwood Scott David Daniels wrote: > I (Scott David Daniels) wrote: > >> I'm not sure of the overhead here, but could something like this work? >> >> def sqrt(x): >> try: return math.sqrt(x) >> except TypeError: return numpy.sqrt(x) >> > > If it "kinda" works, the following addition to __init__ should work: > > from numpy import (ceil as _n_ceil, cos as _n_cos, cosh as _n_cosh, > exp as _n_exp, fabs as _n_fabs, floor as _n_floor, > fmod as _n_fmod, frexp as _n_frexp, hypot as _n_hypot, > ldexp as _n_ldexp, log as _n_log, log10 as _n_log10, > modf as _n_modf, sin as _n_sin, sinh as _n_sinh, > sqrt as _n_sqrt, tan as _n_tan, tanh as _n_tanh) > from math import (ceil as _m_ceil, cos as _m_cos, cosh as _m_cosh, > exp as _m_exp, fabs as _m_fabs, floor as _m_floor, > fmod as _m_fmod, frexp as _m_frexp, hypot as _m_hypot, > ldexp as _m_ldexp, log as _m_log, log10 as _m_log10, > modf as _m_modf, sin as _m_sin, sinh as _m_sinh, > sqrt as _m_sqrt, tan as _m_tan, tanh as _m_tanh) > def ceil(x): > try: return _m_ceil(x) > except TypeError: return _n_ceil(x) > def cos(x): > try: return _m_cos(x) > except TypeError: return _n_cos(x) > def cosh(x): > try: return _m_cosh(x) > except TypeError: return _n_cosh(x) > def exp(x): > try: return _m_exp(x) > except TypeError: return _n_exp(x) > def fabs(x): > try: return _m_fabs(x) > except TypeError: return _n_fabs(x) > def floor(x): > try: return _m_floor(x) > except TypeError: return _n_floor(x) > def fmod(x): > try: return _m_fmod(x) > except TypeError: return _n_fmod(x) > def frexp(x): > try: return _m_frexp(x) > except TypeError: return _n_frexp(x) > def hypot(x): > try: return _m_hypot(x) > except TypeError: return _n_hypot(x) > def ldexp(x): > try: return _m_ldexp(x) > except TypeError: return _n_ldexp(x) > def log(x): > try: return _m_log(x) > except TypeError: return _n_log(x) > def log10(x): > try: return _m_log10(x) > except TypeError: return _n_log10(x) > def modf(x): > try: return _m_modf(x) > except TypeError: return _n_modf(x) > def sin(x): > try: return _m_sin(x) > except TypeError: return _n_sin(x) > def sinh(x): > try: return _m_sinh(x) > except TypeError: return _n_sinh(x) > def sqrt(x): > try: return _m_sqrt(x) > except TypeError: return _n_sqrt(x) > def tan(x): > try: return _m_tan(x) > except TypeError: return _n_tan(x) > def tanh(x): > try: return _m_tanh(x) > except TypeError: return _n_tanh(x) > > Scott David Daniels > Scott.Daniels@... > > >  > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Visualpythonusers mailing list > Visualpythonusers@... > https://lists.sourceforge.net/lists/listinfo/visualpythonusers > 