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Create Kaleidoscope animation effects with HTML5 's canvas

Source: Internet
Author: User
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1 <!DOCTYPE HTML>2 <HTML>3 <Head>4 <style>5 #canvas{6 Background-color:#cccccc;7          8      }9 </style>Ten <Script> One window.onload=function(){ A    varCanvas=document.getElementById ("Canvas"); -    varCObj=Canvas.getcontext ("2d"); -    //var num=150; the     vararr=[]; -     //var angle=0; - SetInterval (function(){ - Cobj.clearrect (0,0, -, -); +           for(varI=0; I<Arr.length;i++) -          { +               A Cobj.save (); at Cobj.translate ( -, -); - Cobj.scale (Arr[i].scale,arr[i].scale); - cobj.rotate (Arr[i].angle*Math.PI/);//The center of the rotation is defined as the origin position of the canvas before the rotation, and the position of the origin is changed only to the subsequent drawing, and the following rectangle is where the origin is (50,50), and the center of rotation is at (100,100) - Cobj.beginpath (); - Cobj.fillstyle=Arr[i].color; - Cobj.rect (Arr[i].num,arr[i].num, -, -); in Cobj.fill (); - Cobj.restore (); to          } +         -         the }, -) * SetInterval (function(){ $          for(varI=0; I<Arr.length;i++)Panax Notoginseng         { -          if(Arr[i].num<=0) the           { + Arr.splice (i,1);//remove the current element; A              Continue;//at the same time exit this cycle the               +           } -           //changes in the storage settings are important, if the change of the storage is not set up, it may not be able to achieve the effect $ Arr[i].angle+=2; $ Arr[i].num-=0.2; - Arr[i].scale-=0.002; -           if(Arr[i].scale<=0.2) the Arr[i].scale=0.2; -         }Wuyi           the     }, -) - SetInterval (function(){ Wu         varrect={angle:0, Num: Max, Scale:1, Color:"RGB ("+parseint (Math.random ()*255)+","+parseint (Math.random ()*255)+","+parseint (Math.random ()*255)+")"} ; - Arr.push (rect); About    }, +) $     -    } -    </Script> - </Head> A <Body> + <CanvasID= "Canvas"width=600pxHeight=600px> the your browser is out of date!  - </Canvas> $  the </Body> the </HTML>

Create Kaleidoscope animation effects with HTML5 's canvas

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Related Keywords:
html5 canvas image animation animation in html5 canvas examples kaleidoscope after effects html5 canvas clock html5 canvas map example html5 canvas examples html5 canvas 3d tutorial

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