Generate curl requests containing floats

grab.sh

#!/bin/bash
count=1.414
limit=1000

while : ;
do
    out=$(bc -l<<< "$count<$limit")
    [[ $out == 0 ]] && { echo "done" ; exit 0; }

    printf -v index "%020d" ${count//./}
    printf -v url "http://localhost:8000?xmax=-1.444&xmin=-2.444&ymax=3&ymin=2&zoom=$count"

    file=./pngs/$index.png
    echo "requesting $file..."
    curl $url > $file
    count=$(bc<<< "scale=4; ($count*1.414)")
done