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Cool Tips & Tricks ::: Javascripts and Java ::: Snowfall tip + question
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Topic: Snowfall tip + question  (?)  Click to receive email notification of replies Click to stop receiving email notification of replies email this topic to a friend
Terisa Grey

Registered User
ezSupporter
Posts: 1
Posted: 12/3/05 1:38 pm    
Snowfall tip + question
I wasn't sure if anyone had posted something to this effect, if so, I'm sorry.

But, I recently picked up the snowfall code from www.dynamicdrive.com and replaced the snowflake gif with a blood drop. It turned out to be a cool effect.

If anyone is interested all you have to do is make a very small graphic, save it as a .gif file [transparency], then place the link in the code as directed. If anyone wants the blood drop, I'd be glad to make another or email it to them.

I do have a question regarding this script though. Is there a way to may it look more like the blood drops are running down the page, instead of fluttering? I'm including the url so the mod[s] can take a peek. Another script or tweaking this one would be great!

Thanks in advance.


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Te1emachus

Registered User
Posts: 887
Posted: 12/3/05 3:03 pm    
Re: Snowfall tip + question
Very cute, and yes, here's a tweaked copy which will keep them from floating left and right on the page:
 
<script type="text/javascript">

/******************************************
* Snow Effect Script- By Altan d.o.o. (http://www.altan.hr/snow/index.html)
* Visit Dynamic Drive DHTML code library (http://www.dynamicdrive.com/) for full source code
* Last updated Nov 9th, 05' by DD. This notice must stay intact for use
******************************************/
 
  //Configure below to change URL path to the snow image
  var snowsrc="http://img217.imageshack.us/img217/2960/blooddropgif6vt.gif"
  // Configure below to change number of snow to render
  var no = 8;
  // Configure whether snow should disappear after x seconds (0=never):
  var hidesnowtime = 0;
  // Configure how much snow should drop down before fading ("windowheight" or "pageheight")
  var snowdistance = "pageheight";

///////////Stop Config//////////////////////////////////

  var ie4up = (document.all) ? 1 : 0;
  var ns6up = (document.getElementById&&!document.all) ? 1 : 0;

    function iecompattest(){
    return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
    }

  var dx, xp, yp;    // coordinate and position variables
  var am, stx, sty;  // amplitude and step variables
  var i, spread = 0, doc_width = 800, doc_height = 600;
 
  if (ns6up) {
    doc_width = self.innerWidth;
    doc_height = self.innerHeight;
  } else if (ie4up) {
    doc_width = iecompattest().clientWidth;
    doc_height = iecompattest().clientHeight;
  }

  dx = new Array();
  xp = new Array();
  yp = new Array();
  am = new Array();
  stx = new Array();
  sty = new Array();
  snowsrc=(snowsrc.indexOf("dynamicdrive.com")!=-1)? "http://img217.imageshack.us/img217/2960/blooddropgif6vt.gif" : snowsrc
  for (i = 0; i < no; ++ i) {  
    dx[i] = 0;                        // set coordinate variables
    xp[i] = Math.random()*(doc_width-50);  // set position variables
    yp[i] = Math.random()*doc_height;
    am[i] = Math.random()*20;         // set amplitude variables
    stx[i] = 0.02 + Math.random()/10; // set step variables
    sty[i] = 0.7 + Math.random();     // set step variables
        if (ie4up||ns6up) {
      if (i == 0) {
        document.write("<div id=\"dot"+ i +"\" style=\"position: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a href=\"http://dynamicdrive.com\"><img src='"+snowsrc+"' border=\"0\"><\/a><\/div>");
      } else {
        document.write("<div id=\"dot"+ i +"\" style=\"position: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"><\/div>");
      }
    }
  }

  function snowIE_NS6() {  // IE and NS6 main animation function
    doc_width = ns6up?window.innerWidth-10 : iecompattest().clientWidth-10;
        doc_height=(window.innerHeight && snowdistance=="windowheight")? window.innerHeight : (ie4up && snowdistance=="windowheight")?  iecompattest().clientHeight : (ie4up && !window.opera && snowdistance=="pageheight")? iecompattest().scrollHeight : iecompattest().offsetHeight;
    for (i = 0; i < no; ++ i) {  // iterate for every dot
      yp[i] += sty[i];
      if (yp[i] > doc_height-50) {
        xp[i] = Math.random()*(doc_width-am[i]-30);
        yp[i] = 0;
        stx[i] = 0.02 + Math.random()/10;
        sty[i] = 0.7 + Math.random();
      }
      dx[i] += stx[i];
      document.getElementById("dot"+i).style.top=yp[i]+"px";
      if (spread <= no) document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i])+"px";  
      spread++;
    }
    snowtimer=setTimeout("snowIE_NS6()", 10);
  }

    function hidesnow(){
        if (window.snowtimer) clearTimeout(snowtimer)
        for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="hidden"
    }
        

if (ie4up||ns6up){
    snowIE_NS6();
        if (hidesnowtime>0)
        setTimeout("hidesnow()", hidesnowtime*1000)
        }

</script>


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Terisa Grey

Registered User
ezSupporter
Posts: 2
Posted: 12/3/05 3:07 pm    
Re: Snowfall tip + question
Thanks. I saw you on both of my boards and I kept hanging around to see what you would say about it. :-) I didn't expect you to tweak it for me, though...thanks a bunch!

EDIT***

I popped it in and it looks just like I wanted! Thanks so much!!

Edited by: Terisa Grey at: 12/3/05 3:20 pm

  reply to this message

Te1emachus

Registered User
Posts: 889
Posted: 12/3/05 3:26 pm    
Re: Snowfall tip + question
You're welcome. :)


  reply to this message

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