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Set subset starting frame to n |
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Set subset starting frame to n percent |
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Set subset ending frame to n |
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Set subset ending frame to n percent |
+SF0.n |
Same as |
+EF0.n |
Same as |
When creating a long animation, it may be handy to render only a portion of the animation to see what it looks like. Suppose you have 100 frames but only want to render frames 30 through 40. If you set Initial_Frame=30 and Final_Frame=40 then the clock would vary from 0.0 to 1.0 from frames 30 through 40 rather than 0.30 through 0.40 as it should. Therefore you should leave Initial_Frame=1 and Final_Frame=100 and use Subset_Start_Frame=30 and Subset_End_Frame=40 to selectively render part of the scene. POV-Ray will then properly compute the clock values.
Usually you will specify the subset using the actual integer frame numbers however an alternate form of the subset commands takes a float value in the range 0.0 <=n.nnn <=1.0 which is interpreted as a fraction of the whole animation. For example, Subset_Start_Frame=0.333 and Subset_End_Frame=0.667 would render the middle 1/3rd of a sequence regardless of the number of frames.
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