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40 lines
1.1 KiB
Plaintext
40 lines
1.1 KiB
Plaintext
5 years ago
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#!/usr/bin/env fish
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# settings:
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set step 0.002 # power increase for each frame
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set start 1 # starting power
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set end 3 # end power
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# internal vars:
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set counter 1 # internal counter for numbering images
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set pos "$start" # current power
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# render a frame. power is $argv[1] and counter is $argv[2]
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function render
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./march.out $argv[1] "out/3/"(num $argv[2])".bmp" > /dev/null
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end
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# pad counter with zeroes to the left
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function num
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printf "%05i" $argv[1]
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end
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# iterate over all frames and draw them
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while test "$pos" -lt "$end"
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render "$pos" "$counter"
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set pos (math "$pos" + "$step")
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set counter (math $counter + 1)
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set percent (math "ceil((($pos - $start) / ($end - $start)) * 100)")
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echo -ne "\r$percent% ($start -> $pos -> $end) "
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end
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echo to convert the frames to a video, use ffmpeg like this:
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echo ffmpeg -r 60 -f image2 -s 1080x1080 -i %05d.bmp -vcodec h264 -crf 20 animation.mp4
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echo
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echo explanation:
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echo " -r 60 60 fps output video"
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echo " -s 1080x1080 video resolution"
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echo " -i %u5d.bmp file name format"
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echo " -vcoded h264 video codec"
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echo " -crf 20 quality. 25 is best, 15 is pretty bad"
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