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Difference between revisions of "Stereo ray"

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  png big-left-image.png
 
  png big-left-image.png
  
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== Script ==
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== Example ==
  
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A user on the PyMol list wrote a very nice little stereo ray tracing script.  Just copy this to a text file.  Then, in PyMol run
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<syntaxhighlight lang="python">
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run dirName/scriptName.pym
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import stereo_ray
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where '''dirName''' is where you put it, and '''scriptName''' is what you named the file then run one something like the example lines given:
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stereo_ray output, 1000, 600
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<source lang="python">
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stereo_ray MyImages.png
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EXAMPLE
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</syntaxhighlight>
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  stereo_ray output, 1000, 600
 
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  stereo_ray secondImage.png
 
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</source>
 
 
This will create to images, one with an L and one with an R suffix.  Just paste the two images next to each other (in some image editing program) and you're done.
 
This will create to images, one with an L and one with an R suffix.  Just paste the two images next to each other (in some image editing program) and you're done.
  
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<source lang="python">
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== Python Code ==
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from pymol import cmd
 
  
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def stereo_ray(output='', width='', height=''):
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{{Template:PymolScriptRepoDownload|stereo_ray.py}}
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  '''
 
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DESCRIPTION
 
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  "stereo_ray" ray-traces the current scene twice (separated by
 
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  a six-degree rotation around the y axis)
 
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  and saves a pair of images that can be combined in any image
 
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  manipulation software to form a stereoimage.
 
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  The first argument, the output file name, is mandatory.
 
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  The second and third arguments, the size of the image, are not.
 
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  If the width is given, the height will be calculated.
 
  
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USAGE
 
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  stereo_ray filename [, width [, height]]
 
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EXAMPLE
 
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  stereo_ray output, 1000, 600
 
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  stereo_ray secondImage.png
 
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  '''
 
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  if output == '':
 
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      print 'no output filename defined\n'
 
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      print 'try: \'stereo_ray filename\''
 
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      return -1
 
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      # abort if no output file name given
 
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  if width == '':
 
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      width,height = cmd.get_session()['main'][0:2]
 
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      # get dimensions from viewer if not given
 
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  elif height == '':
 
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      oldWidth,oldHeight = cmd.get_session()['main'][0:2]
 
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      height = int(width)*oldHeight/oldWidth
 
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      # calculate height from proportions of viewer if
 
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      # only width is given
 
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  cmd.ray(width, height, angle=-3)
 
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  cmd.png(output+"_r")
 
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  cmd.ray(width, height, angle=3)
 
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  cmd.png(output+"_l")
 
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cmd.extend('stereo_ray',stereo_ray)
 
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</source>
 
  
 
[[Category:Script_Library|Stereo Ray]]
 
[[Category:Script_Library|Stereo Ray]]
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[[Category:UI_Scripts]]

Revision as of 23:06, 7 December 2011

Left Image
Right Image
Combined Images


Manually

To get a stereo diagram you need two images. The left image is rotated +3 degrees and the right image is rotated -3 degrees.

To obtain the left image, type: 

ray angle=+3
png left-image.png

Likewise, to obtain the right image, type: 

ray angle=-3
png right-image.png

You still use any other ray based modifications, such as: 

ray 1600,1200,angle=+3
png big-left-image.png

Example

import stereo_ray 
stereo_ray output, 1000, 600
stereo_ray MyImages.png

This will create to images, one with an L and one with an R suffix. Just paste the two images next to each other (in some image editing program) and you're done.

Python Code

Download: stereo_ray.py
This code has been put under version control in the project Pymol-script-repo
Retrieved from "http://wiki.pymol.org/index.php?title=Stereo_ray&oldid=10484"