44 lines
1.0 KiB
Bash
44 lines
1.0 KiB
Bash
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#!/bin/bash
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LAST=$1
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PI=3.14159265359
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FPS=24
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MULTIPLE=3
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STEP=$(echo "scale=6;360/45" | bc -l)
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AMP=1.0
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STARTANGLE=270
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DOTSIZE_MIN=2
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DOTSIZE_MAX=6
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DOTSIZE_HALF=`echo "scale=6;($DOTSIZE_MAX - $DOTSIZE_MIN) / 2" | bc`
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DOTSIZE=`echo "scale=6;($DOTSIZE_MIN + $DOTSIZE_HALF)" | bc`
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DOTSIZE_MULTIPLE=$DOTSIZE_HALF
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PARTICLES_MIN=300
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PARTICLES_MAX=550
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PARTICLES_HALF=`echo "($PARTICLES_MAX - $PARTICLES_MIN) / 2" | bc`
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PARTICLES=$((PARTICLES_MIN+PARTICLES_HALF))
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PARTICLES_MULTIPLE=$PARTICLES_HALF
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fluctuation () {
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i=$1
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ANGLE=$(echo "scale=6;$STARTANGLE+($i * $STEP)" | bc)
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FLUCTUATION=$(echo "scale=6;s($ANGLE*($PI/180))*$AMP" | bc -l)
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echo $FLUCTUATION
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}
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i=0
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while [ $i -lt $LAST ]; do
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FLUCTUATION=$(fluctuation $i)
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REALTIME=$(echo "scale=1;($i*$MULTIPLE)/$FPS" | bc -l)
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echo "[${i}] $((i*MULTIPLE)) $REALTIME: ${FLUCTUATION}"
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fluc=`fluctuation $i`
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particles=`echo "scale=0;($PARTICLES-($fluc*$PARTICLES_MULTIPLE))/1" | bc`
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dotsize=`echo "scale=6;$DOTSIZE+($fluc*$DOTSIZE_MULTIPLE)" | bc`
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echo $fluc
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echo $particles
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echo $dotsize
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i=$((i+1))
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done
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