(sorry, bad day continues) fixed type in the sample usage:
# first, load the function from a .py file run turn_y_light.py # now use it... turn y,3 turn_y_light(3) ray png image1.png turn y,-6 turn_y_light(-6) ray png image2.png -- mailto:war...@delanoscientific.com Warren L. DeLano, Ph.D. Principal DeLano Scientific LLC Voice (650)-346-1154 Fax (650)-593-4020 -----Original Message----- From: pymol-users-ad...@lists.sourceforge.net [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of Warren L. DeLano Sent: Wednesday, April 30, 2003 1:54 PM To: 'Anthony Duff'; pymol-users@lists.sourceforge.net Cc: f.h.j.van.hoe...@chem.rug.nl Subject: RE: [PyMOL] RE: Stereo pictures, light vector and shadows Yep, I blew it -- neglected to check my work. Scratch all of my previous emails on the subject. The following function (turn_y_light.py) will correctly rotate the light in order to offset the effect of "turn y,#" def turn_y_light(rot): # assuming "rot" has angle in degrees rot_rad = math.pi*rot/180.0 (X0,Y0,Z0)=cmd.get_setting_tuple("light")[1] X1= X0*math.cos(rot_rad) + Z0*math.sin(rot_rad) Y1= Y0 Z1= Z0*math.cos(rot_rad) - X0*math.sin(rot_rad) cmd.set("light",[X1,Y1,Z1]) sample usage: # first, load the function from a .py file run turn_y_light.py # now use it... turn y,3 turn_y_list(3) ray png image1.png turn y,-6 turn_y_light(-6) ray png image2.png Sorry for the confusion! Warren -- mailto:war...@delanoscientific.com Warren L. DeLano, Ph.D. Principal DeLano Scientific LLC Voice (650)-346-1154 Fax (650)-593-4020 -----Original Message----- From: pymol-users-ad...@lists.sourceforge.net [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of Anthony Duff Sent: Tuesday, April 29, 2003 9:08 PM To: pymol-users@lists.sourceforge.net Subject: Re: [PyMOL] RE: Stereo pictures, light vector and shadows Warren's script is not quite right. The value -0.902 is not correct. Apparently, my picture, with a stick peptide casting a shadow on the inner surface of a deep crevice, is particularly demanding. I have done the vector calculations. See the attached excel worksheet for light vectors for any desired stereo angle. I am using the script below. It produces perfect shadows and reflections. turn y, 3 set light=[-0.43709,-0.34800,-0.82937] ray 1120,818 png image.l.png turn y, -6 set light=[-0.34800,-0.34800,-0.87051] ray 1120,818 png image.r.png Anthony At 05:10 AM 24/04/2003, Warren L. DeLano wrote: >In the script I just posted, I used unit vectors to specify the light >direction and simply rotated that vector by 6 degrees. The first vector >is merely [-0.4,-0.4,-1.0] normalized. The second is that same vector >rotated 6 degrees about the Y axis. > >I then loaded the output into Illustrator and was able to view both >cross-eye and wall-eye stereo pairs with clean shadows. > > > > > > Try using this sequence to create your stereo pair: > > > > set light=[-0.348,-0.348,-0.870] > > ray > > png image1.png > > turn y,6 > > set light=[-0.437,-0.348,-0.902] > > ray > > png image2.png > > turn y,-6 > > > > Cheers, > > Warren ---------------------------------------------------------------------- Anthony Duff Postdoctoral Fellow School of Molecular and Microbial Biosciences Biochemistry Building, G08 University of Sydney, NSW 2006 Australia Phone. 61-2-9351-7817 Fax. 61-2-9351-4726 ---------------------------------------------------------------------- ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ PyMOL-users mailing list PyMOL-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pymol-users
