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Tuesday, March 6, 2012

Cara Membuat Efek Salju V.2

pada topik sebelumnya saya sudah membahas cara membuat efek salju, pada topik ini saya akan membahas memberi efek salju Versi 2 ,..
langsung aja ya Go Two Te Ka Pe /.  

  1.  Login Blogger masuk Dashboard
  2.  Langsung ke Design / rancangan 
  3.  Click Edit HTML (jangan lupa centang dlu Expand All widget)
  4.  Copy/Paste code dibawah ini tepat dibawah code  ]]></b:skin>

    <script type='text/javascript'>
    //<![CDATA[
    /*
       DHTML Snowstorm! OO-style Jascript-based Snow effect
       ----------------------------------------------------
       Version 1.4.20091115 (Previous rev: v1.3.20081215)
       Code by Scott Schiller - http://schillmania.com
       ----------------------------------------------------
     
       Initializes after body onload() by default (via addEventHandler() call at bottom.)
       To customize properties, edit below or override configuration after this script
       has run (but before body.onload), eg. snowStorm.snowStick = false;

    */

    var snowStorm = null;

    function SnowStorm() {

      // --- PROPERTIES ---

      this.flakesMax = 128;           // Limit total amount of snow made (falling + sticking)
      this.flakesMaxActive = 64;      // Limit amount of snow falling at once (less = lower CPU use)
      this.animationInterval = 33;    // Theoretical "miliseconds per frame" measurement. 20 = fast + smooth, but high CPU use. 50 = more conservative, but slower
      this.flakeBottom = null;        // Integer for Y axis snow limit, 0 or null for "full-screen" snow effect
      this.targetElement = null;      // element which snow will be appended to (document body if null/undefined) - can be an element ID string, or a DOM node reference
      this.followMouse = true;        // Snow will change movement with the user's mouse
      this.snowColor = '#fff';        // Don't eat (or use?) yellow snow.
      this.snowCharacter = '&bull;';  // &bull; = bullet, &middot; is square on some systems etc.
      this.snowStick = true;          // Whether or not snow should "stick" at the bottom. When off, will never collect.
      this.useMeltEffect = true;      // When recycling fallen snow (or rarely, when falling), have it "melt" and fade out if browser supports it
      this.useTwinkleEffect = false;  // Allow snow to randomly "flicker" in and out of view while falling
      this.usePositionFixed = false;  // true = snow not affected by window scroll. may increase CPU load, disabled by default - if enabled, used only where supported

      // --- less-used bits ---

      this.flakeLeftOffset = 0;       // amount to subtract from edges of container
      this.flakeRightOffset = 0;      // amount to subtract from edges of container
      this.flakeWidth = 8;            // max pixel width for snow element
      this.flakeHeight = 8;           // max pixel height for snow element
      this.vMaxX = 5;                 // Maximum X velocity range for snow
      this.vMaxY = 4;                 // Maximum Y velocity range
      this.zIndex = 0;                // CSS stacking order applied to each snowflake

      // --- End of user section ---

      // jslint global declarations
      /*global window, document, navigator, clearInterval, setInterval */

      var addEvent = (typeof(window.attachEvent)=='undefined'?function(o,evtName,evtHandler) {
        return o.addEventListener(evtName,evtHandler,false);
      }:function(o,evtName,evtHandler) {
        return o.attachEvent('on'+evtName,evtHandler);
      });

      var removeEvent = (typeof(window.attachEvent)=='undefined'?function(o,evtName,evtHandler) {
        return o.removeEventListener(evtName,evtHandler,false);
      }:function(o,evtName,evtHandler) {
        return o.detachEvent('on'+evtName,evtHandler);
      });

      function rnd(n,min) {
        if (isNaN(min)) {
          min = 0;
        }
        return (Math.random()*n)+min;
      }

      function plusMinus(n) {
        return (parseInt(rnd(2),10)==1?n*-1:n);
      }

      var s = this;
      var storm = this;
      this.timers = [];
      this.flakes = [];
      this.disabled = false;
      this.active = false;

      var isIE = navigator.userAgent.match(/msie/i);
      var isIE6 = navigator.userAgent.match(/msie 6/i);
      var isOldIE = (isIE && (isIE6 || navigator.userAgent.match(/msie 5/i)));
      var isWin9X = navigator.appVersion.match(/windows 98/i);
      var isiPhone = navigator.userAgent.match(/iphone/i);
      var isBackCompatIE = (isIE && document.compatMode == 'BackCompat');
      var noFixed = ((isBackCompatIE || isIE6 || isiPhone)?true:false);
      var screenX = null;
      var screenX2 = null;
      var screenY = null;
      var scrollY = null;
      var vRndX = null;
      var vRndY = null;
      var windOffset = 1;
      var windMultiplier = 2;
      var flakeTypes = 6;
      var fixedForEverything = false;
      var opacitySupported = (function(){
        try {
          document.createElement('div').style.opacity = '0.5';
        } catch (e) {
          return false;
        }
        return true;
      })();
      var docFrag = document.createDocumentFragment();
      if (s.flakeLeftOffset === null) {
        s.flakeLeftOffset = 0;
      }
      if (s.flakeRightOffset === null) {
        s.flakeRightOffset = 0;
      }

      this.meltFrameCount = 20;
      this.meltFrames = [];
      for (var i=0; i<this.meltFrameCount; i++) {
        this.meltFrames.push(1-(i/this.meltFrameCount));
      }

      this.randomizeWind = function() {
        vRndX = plusMinus(rnd(s.vMaxX,0.2));
        vRndY = rnd(s.vMaxY,0.2);
        if (this.flakes) {
          for (var i=0; i<this.flakes.length; i++) {
            if (this.flakes[i].active) {
              this.flakes[i].setVelocities();
            }
          }
        }
      };

      this.scrollHandler = function() {
        // "attach" snowflakes to bottom of window if no absolute bottom value was given
        scrollY = (s.flakeBottom?0:parseInt(window.scrollY||document.documentElement.scrollTop||document.body.scrollTop,10));
        if (isNaN(scrollY)) {
          scrollY = 0; // Netscape 6 scroll fix
        }
        if (!fixedForEverything && !s.flakeBottom && s.flakes) {
          for (var i=s.flakes.length; i--;) {
            if (s.flakes[i].active === 0) {
              s.flakes[i].stick();
            }
          }
        }
      };

      this.resizeHandler = function() {
        if (window.innerWidth || window.innerHeight) {
          screenX = window.innerWidth-(!isIE?16:2)-s.flakeRightOffset;
          screenY = (s.flakeBottom?s.flakeBottom:window.innerHeight);
        } else {
          screenX = (document.documentElement.clientWidth||document.body.clientWidth||document.body.scrollWidth)-(!isIE?8:0)-s.flakeRightOffset;
          screenY = s.flakeBottom?s.flakeBottom:(document.documentElement.clientHeight||document.body.clientHeight||document.body.scrollHeight);
        }
        screenX2 = parseInt(screenX/2,10);
      };

      this.resizeHandlerAlt = function() {
        screenX = s.targetElement.offsetLeft+s.targetElement.offsetWidth-s.flakeRightOffset;
        screenY = s.flakeBottom?s.flakeBottom:s.targetElement.offsetTop+s.targetElement.offsetHeight;
        screenX2 = parseInt(screenX/2,10);
      };

      this.freeze = function() {
        // pause animation
        if (!s.disabled) {
          s.disabled = 1;
        } else {
          return false;
        }
        for (var i=s.timers.length; i--;) {
          clearInterval(s.timers[i]);
        }
      };

      this.resume = function() {
        if (s.disabled) {
           s.disabled = 0;
        } else {
          return false;
        }
        s.timerInit();
      };

      this.toggleSnow = function() {
        if (!s.flakes.length) {
          // first run
          s.start();
        } else {
          s.active = !s.active;
          if (s.active) {
            s.show();
            s.resume();
          } else {
            s.stop();
            s.freeze();
          }
        }
      };

      this.stop = function() {
        this.freeze();
        for (var i=this.flakes.length; i--;) {
          this.flakes[i].o.style.display = 'none';
        }
        removeEvent(window,'scroll',s.scrollHandler);
        removeEvent(window,'resize',s.resizeHandler);
        if (!isOldIE) {
          removeEvent(window,'blur',s.freeze);
          removeEvent(window,'focus',s.resume);
        }
      };

      this.show = function() {
        for (var i=this.flakes.length; i--;) {
          this.flakes[i].o.style.display = 'block';
        }
      };

      this.SnowFlake = function(parent,type,x,y) {
        var s = this;
        var storm = parent;
        this.type = type;
        this.x = x||parseInt(rnd(screenX-20),10);
        this.y = (!isNaN(y)?y:-rnd(screenY)-12);
        this.vX = null;
        this.vY = null;
        this.vAmpTypes = [1,1.2,1.4,1.6,1.8]; // "amplification" for vX/vY (based on flake size/type)
        this.vAmp = this.vAmpTypes[this.type];
        this.melting = false;
        this.meltFrameCount = storm.meltFrameCount;
        this.meltFrames = storm.meltFrames;
        this.meltFrame = 0;
        this.twinkleFrame = 0;
        this.active = 1;
        this.fontSize = (10+(this.type/5)*10);
        this.o = document.createElement('div');
        this.o.innerHTML = storm.snowCharacter;
        this.o.style.color = storm.snowColor;
        this.o.style.position = (fixedForEverything?'fixed':'absolute');
        this.o.style.width = storm.flakeWidth+'px';
        this.o.style.height = storm.flakeHeight+'px';
        this.o.style.fontFamily = 'arial,verdana';
        this.o.style.overflow = 'hidden';
        this.o.style.fontWeight = 'normal';
        this.o.style.zIndex = storm.zIndex;
        docFrag.appendChild(this.o);

        this.refresh = function() {
          if (isNaN(s.x) || isNaN(s.y)) {
            // safety check
            return false;
          }
          s.o.style.left = s.x+'px';
          s.o.style.top = s.y+'px';
        };

        this.stick = function() {
          if (noFixed || (storm.targetElement != document.documentElement && storm.targetElement != document.body)) {
            s.o.style.top = (screenY+scrollY-storm.flakeHeight)+'px';
          } else if (storm.flakeBottom) {
            s.o.style.top = storm.flakeBottom+'px';
          } else {
            s.o.style.display = 'none';
            s.o.style.top = 'auto';
            s.o.style.bottom = '0px';
            s.o.style.position = 'fixed';
            s.o.style.display = 'block';
          }
        };

        this.vCheck = function() {
          if (s.vX>=0 && s.vX<0.2) {
            s.vX = 0.2;
          } else if (s.vX<0 && s.vX>-0.2) {
            s.vX = -0.2;
          }
          if (s.vY>=0 && s.vY<0.2) {
            s.vY = 0.2;
          }
        };

        this.move = function() {
          var vX = s.vX*windOffset;
          s.x += vX;
          s.y += (s.vY*s.vAmp);
          if (s.x >= screenX || screenX-s.x < storm.flakeWidth) { // X-axis scroll check
            s.x = 0;
          } else if (vX < 0 && s.x-storm.flakeLeftOffset<0-storm.flakeWidth) {
            s.x = screenX-storm.flakeWidth-1; // flakeWidth;
          }
          s.refresh();
          var yDiff = screenY+scrollY-s.y;
          if (yDiff<storm.flakeHeight) {
            s.active = 0;
            if (storm.snowStick) {
              s.stick();
            } else {
              s.recycle();
            }
          } else {
            if (storm.useMeltEffect && s.active && s.type < 3 && !s.melting && Math.random()>0.998) {
              // ~1/1000 chance of melting mid-air, with each frame
              s.melting = true;
              s.melt();
              // only incrementally melt one frame
              // s.melting = false;
            }
            if (storm.useTwinkleEffect) {
              if (!s.twinkleFrame) {
                if (Math.random()>0.9) {
                  s.twinkleFrame = parseInt(Math.random()*20,10);
                }
              } else {
                s.twinkleFrame--;
                s.o.style.visibility = (s.twinkleFrame && s.twinkleFrame%2===0?'hidden':'visible');
              }
            }
          }
        };

        this.animate = function() {
          // main animation loop
          // move, check status, die etc.
          s.move();
        };

        this.setVelocities = function() {
          s.vX = vRndX+rnd(storm.vMaxX*0.12,0.1);
          s.vY = vRndY+rnd(storm.vMaxY*0.12,0.1);
        };

        this.setOpacity = function(o,opacity) {
          if (!opacitySupported) {
            return false;
          }
          o.style.opacity = opacity;
        };

        this.melt = function() {
          if (!storm.useMeltEffect || !s.melting) {
            s.recycle();
          } else {
            if (s.meltFrame < s.meltFrameCount) {
              s.meltFrame++;
              s.setOpacity(s.o,s.meltFrames[s.meltFrame]);
              s.o.style.fontSize = s.fontSize-(s.fontSize*(s.meltFrame/s.meltFrameCount))+'px';
              s.o.style.lineHeight = storm.flakeHeight+2+(storm.flakeHeight*0.75*(s.meltFrame/s.meltFrameCount))+'px';
            } else {
              s.recycle();
            }
          }
        };

        this.recycle = function() {
          s.o.style.display = 'none';
          s.o.style.position = (fixedForEverything?'fixed':'absolute');
          s.o.style.bottom = 'auto';
          s.setVelocities();
          s.vCheck();
          s.meltFrame = 0;
          s.melting = false;
          s.setOpacity(s.o,1);
          s.o.style.padding = '0px';
          s.o.style.margin = '0px';
          s.o.style.fontSize = s.fontSize+'px';
          s.o.style.lineHeight = (storm.flakeHeight+2)+'px';
          s.o.style.textAlign = 'center';
          s.o.style.verticalAlign = 'baseline';
          s.x = parseInt(rnd(screenX-storm.flakeWidth-20),10);
          s.y = parseInt(rnd(screenY)*-1,10)-storm.flakeHeight;
          s.refresh();
          s.o.style.display = 'block';
          s.active = 1;
        };

        this.recycle(); // set up x/y coords etc.
        this.refresh();

      };

      this.snow = function() {
        var active = 0;
        var used = 0;
        var waiting = 0;
        var flake = null;
        for (var i=s.flakes.length; i--;) {
          if (s.flakes[i].active == 1) {
            s.flakes[i].move();
            active++;
          } else if (s.flakes[i].active === 0) {
            used++;
          } else {
            waiting++;
          }
          if (s.flakes[i].melting) {
            s.flakes[i].melt();
          }
        }
        if (active<s.flakesMaxActive) {
          flake = s.flakes[parseInt(rnd(s.flakes.length),10)];
          if (flake.active === 0) {
            flake.melting = true;
          }
        }
      };

      this.mouseMove = function(e) {
        if (!s.followMouse) {
          return true;
        }
        var x = parseInt(e.clientX,10);
        if (x<screenX2) {
          windOffset = -windMultiplier+(x/screenX2*windMultiplier);
        } else {
          x -= screenX2;
          windOffset = (x/screenX2)*windMultiplier;
        }
      };

      this.createSnow = function(limit,allowInactive) {
        for (var i=0; i<limit; i++) {
          s.flakes[s.flakes.length] = new s.SnowFlake(s,parseInt(rnd(flakeTypes),10));
          if (allowInactive || i>s.flakesMaxActive) {
            s.flakes[s.flakes.length-1].active = -1;
          }
        }
        storm.targetElement.appendChild(docFrag);
      };

      this.timerInit = function() {
        s.timers = (!isWin9X?[setInterval(s.snow,s.animationInterval)]:[setInterval(s.snow,s.animationInterval*3),setInterval(s.snow,s.animationInterval)]);
      };

      this.init = function() {
        s.randomizeWind();
        s.createSnow(s.flakesMax); // create initial batch
        addEvent(window,'resize',s.resizeHandler);
        addEvent(window,'scroll',s.scrollHandler);
        if (!isOldIE) {
          addEvent(window,'blur',s.freeze);
          addEvent(window,'focus',s.resume);
        }
        s.resizeHandler();
        s.scrollHandler();
        if (s.followMouse) {
          addEvent(document,'mousemove',s.mouseMove);
        }
        s.animationInterval = Math.max(20,s.animationInterval);
        s.timerInit();
      };

      var didInit = false;

      this.start = function(bFromOnLoad) {
        if (!didInit) {
          didInit = true;
        } else if (bFromOnLoad) {
          // already loaded and running
          return true;
        }
        if (typeof s.targetElement == 'string') {
          var targetID = s.targetElement;
          s.targetElement = document.getElementById(targetID);
          if (!s.targetElement) {
            throw new Error('Snowstorm: Unable to get targetElement "'+targetID+'"');
          }
        }
        if (!s.targetElement) {
          s.targetElement = (!isIE?(document.documentElement?document.documentElement:document.body):document.body);
        }
        if (s.targetElement != document.documentElement && s.targetElement != document.body) {
          s.resizeHandler = s.resizeHandlerAlt; // re-map handler to get element instead of screen dimensions
        }
        s.resizeHandler(); // get bounding box elements
        s.usePositionFixed = (s.usePositionFixed && !noFixed); // whether or not position:fixed is supported
        fixedForEverything = s.usePositionFixed;
        if (screenX && screenY && !s.disabled) {
          s.init();
          s.active = true;
        }
      };

      function doStart() {
          s.start(true);
      }

      if (document.addEventListener) {
        // safari 3.0.4 doesn't do DOMContentLoaded, maybe others - use a fallback to be safe.
        document.addEventListener('DOMContentLoaded',doStart,false);
        window.addEventListener('load',doStart,false);
      } else {
        addEvent(window,'load',doStart);
      }

    }

    snowStorm = new SnowStorm();

    //]]>
    </script>

     
  5. kemudian Save
  6. Buat tambahan aja , kalau Loading blog jadi agak lama, Compress aja script nya
    kalau ada yang blom tau caranya klik Disini


    Script Diatas saya pelajari dari template temen saya / Jami'

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