A crazy twister effect in 256bytes of DHTML
p01<i id=d><script>setInterval('for(x=_="in solid #",E=Math,o=99,--O;o--;x+="<hr style=\'width:0;margin:auto;border-right:"+E.abs(q?p:P)+_+(9-q)*36+";border-left:"+E.abs(q?P:p)+_+(8+q)*36+"\'>")q=0>(p=E.cos(O+=22))*(P=E.sin(O));d.innerHTML=x',O=9)</script>
Yes, pulling this one was not easy.
How does it work
The twisting bar is rendered using
<hr> elements whose border and color follow a curve. The borders are
solid and sized fraction of
in hence the subtitle of this intro.
q=0>(p=E.cos(O+=22))(P=E.sin(O)) hits three birds. It computes and stores the length of both visible sides of the twisting bar in
P and check and stores which one goes left by compairing
With this three values the
border-left of the
<hr> element can style properly, setting the width to according to the visible sides of the bar and setting the color by casting
q like this
(8+q)36. Combined with the subtitle of this intro, this gives the colors
Hope this answers any questions you had about this effect.
As usual you can this little production, Rubber in solid # on Pouet.net
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