Editing Light (section)

= User Hint = 
<gallery>
Image:Ll.gif|Moving lights make for a cool effect; you can make this look better by smoothing out the distances and ranges.
</gallery>:
One neat trick, for rendering a "sunset" on your protein is to turn off all the lights, then render the scene as you move the light across the scene.  The shadows move across the protein based on the light position and it looks like the sun is setting.



== The Code ==
Here's the code for the animated GIF shown above.
<source lang="python">
python
cmd.set("light", ll)
for x in range(10):
        l = [ -0.4 + 2*float(x/10.), -0.4, -1  ]
        print l
        cmd.set("light", l)
        cmd.ray()
        cmd.png("lll" + str(x) + ".png" )
for x in range(10):
        l[0] -= 2*float(x/10.)
        print l
        cmd.set("light", l)
        cmd.ray()
        cmd.png("llll" + str(x) + ".png" )
python end
</source>
Then, in the shell do
<source lang="bash">
convert lll* llll* light_movie.gif
</source>