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HTML5 Canvas Cook-b.ook^20-05-2016

 
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MessagePosté le: Ven 20 Mai - 20:50 (2016)    Sujet du message: HTML5 Canvas Cook-b.ook^20-05-2016 Répondre en citant




HTML5 Canvas Cookbook > urlin.us/2bps2





Chapter,5:,Bringing,the,Canvas,to,Life,with,Animation,Introduction,Creating,an,Animation,class,Creating,a,linear,motion,Creating,acceleration,Creating,oscillation,Oscillating,a,bubble,Swinging,a,pendulum,Animating,mechanical,gears,Animating,a,clock,Simulating,particle,physics,Creating,microscopic,life,forms,Stressing,the,canvas,and,displaying,the,FPS,.Each,,,recipe,,,contains,,,step-by-step,,,instructions,,,followed,,,by,,,analysis,,,of,,,what,,,was,,,done,,,in,,,each,,,task,,,and,,,other,,,useful,,,informationFOOTER,,/,,LEST,,WE,,FORGET,,Copyright,,,,2004-2007,,by,,Parerga,,und,,Paralipomena,,,unless,,otherwise,,notedHeres,for,example,an,example,from,Chapter,5,,Oscillating,a,bubble:,[inline],[script,type=text/javascript],var,Animation,=,function(canvasId){,this.canvas,=,document.getElementById(canvasId);,this.context,=,this.canvas.getContext(2d);,this.t,=,0;,this.timeInterval,=,0;,this.startTime,=,0;,this.lastTime,=,0;,this.frame,=,0;,this.animating,=,false;,//,provided,by,Paul,Irish,window.requestAnimFrame,=,(function(callback){,return,window.requestAnimationFrame,,window.webkitRequestAnimationFrame,,window.mozRequestAnimationFrame,,window.oRequestAnimationFrame,,window.msRequestAnimationFrame,,function(callback){,window.setTimeout(callback,,1000,/,60);,};,})();,};,Animation.prototype.getContext,=,function(){,return,this.context;,};,Animation.prototype.getCanvas,=,function(){,return,this.canvas;,};,Animation.prototype.clear,=,function(){,this.context.clearRect(0,,0,,this.canvas.width,,this.canvas.height);,};,Animation.prototype.setDrawStage,=,function(func){,this.drawStage,=,func;,};,Animation.prototype.isAnimating,=,function(){,return,this.animating;,};,Animation.prototype.getFrame,=,function(){,return,this.frame;,};,Animation.prototype.start,=,function(){,this.animating,=,true;,var,date,=,new,Date();,this.startTime,=,date.getTime();,this.lastTime,=,this.startTime;,if,(this.drawStage,!==,undefined),{,this.drawStage();,},this.animationLoop();,};,Animation.prototype.stop,=,function(){,this.animating,=,false;,};,Animation.prototype.getTimeInterval,=,function(){,return,this.timeInterval;,};,Animation.prototype.getTime,=,function(){,return,this.t;,};,Animation.prototype.getFps,=,function(){,return,this.timeInterval,>,0,?,1000,/,this.timeInterval,:,0;,};,Animation.prototype.animationLoop,=,function(){,var,that,=,this;,this.frame++;,var,date,=,new,Date();,var,thisTime,=,date.getTime();,this.timeInterval,=,thisTime,,this.lastTime;,this.t,+=,this.timeInterval;,this.lastTime,=,thisTime;,if,(this.drawStage,!==,undefined),{,this.drawStage();,},if,(this.animating),{,requestAnimFrame(function(){,that.animationLoop();,});,},};,window.onload,=,function(){,//,instantiate,new,animation,object,var,anim,=,new,Animation(myCanvas);,var,context,=,anim.getContext();,var,canvas,=,anim.getCanvas();,anim.setDrawStage(function(){,//,update,var,widthScale,=,Math.sin(this.getTime(),/,200),*,0.1,+,0.9;,var,heightScale,=,-1,*,Math.sin(this.getTime(),/,200),*,0.1,+,0.9;,//,clear,this.clear();,//draw,context.beginPath();,context.save();,context.translate(canvas.width,/,2,,canvas.height,/,2);,context.scale(widthScale,,heightScale);,context.arc(0,,0,,65,,0,,2,*,Math.PI,,false);,context.restore();,context.fillStyle,=,#8ED6FF;,context.fill();,context.lineWidth,=,2;,context.strokeStyle,=,#555;,context.stroke();,context.beginPath();,context.save();,context.translate(canvas.width,/,2,,canvas.height,/,2);,context.scale(widthScale,,heightScale);,context.arc(-30,,-30,,15,,0,,2,*,Math.PI,,false);,context.restore();,context.fillStyle,=,white;,context.fill();,});,anim.start();,};,[/script],[/inline],,In,a,nutshell,,this,is,what,is,going,on,(note,that,the,animation,library,is,discussed,in,a,previous,chapter,of,the,book):,,window.onload,=,function(){,//,instantiate,new,animation,object,var,anim,=,new,Animation("myCanvas");,var,context,=,anim.getContext();,var,canvas,=,anim.getCanvas();,anim.setDrawStage(function(){,//,update,var,widthScale,=,Math.sin(this.getTime(),/,200),*,0.1,+,0.9;,var,heightScale,=,-1,*,Math.sin(this.getTime(),/,200),*,0.1,+,0.9;,//,clear,this.clear();,//draw,context.beginPath();,context.save();,context.translate(canvas.width,/,2,,canvas.height,/,2);,context.scale(widthScale,,heightScale);,context.arc(0,,0,,65,,0,,2,*,Math.PI,,false);,context.restore();,context.fillStyle,=,"#8ED6FF";,context.fill();,context.lineWidth,=,2;,context.strokeStyle,=,"#555";,context.stroke();,context.beginPath();,context.save();,context.translate(canvas.width,/,2,,canvas.height,/,2);,context.scale(widthScale,,heightScale);,context.arc(-30,,-30,,15,,0,,2,*,Math.PI,,false);,context.restore();,context.fillStyle,=,"white";,context.fill();,});,anim.start();,};,,All,in,all,,a,book,definitely,worth,reading!,,META,/,ABOUT,THIS,POST,This,entry,was,posted,on,Wednesday,,February,8th,,2012,at,5:34,pm,and,is,filed,under,TechLifeDo,,,not,,,expect,,,that,,,you,,,will,,,become,,,a,,,canvas,,,professional,,,after,,,finishing,,,this,,,book,,,,but,,,this,,,is,,,an,,,excellent,,,material,,,for,,,entering,,,the,,,path,,,of,,,becoming,,,oneBringing,,,the,,,Canvas,,,to,,,Life,,,with,,,Animation,,,Creating,,,an,,,animation,,,class,,,animation.js,,,Creating,,,a,,,linear,,,motion,,,animation.js,,,index.html,,,Creating,,,an,,,acceleration,,,animation.js,,,index.html,,,Creating,,,an,,,oscillation,,,animation.js,,,index.html,,,Oscillating,,,a,,,bubble,,,animation.js,,,index.html,,,Swinging,,,a,,,pendulum,,,animation.js,,,index.html,,,Animating,,,mechanical,,,gears,,,animation.js,,,index.html,,,Animating,,,a,,,clock,,,animation.js,,,index.html,,,Simulating,,,particle,,,physics,,,animation.js,,,index.html,,,Creating,,,microscopic,,,life,,,forms,,,animation.js,,,index.html,,,Stressing,,,the,,,canvas,,,and,,,displaying,,,the,,,FPS,,,animation.js,,,index.html,,,Read,,more,,Read,,less,,Featured,,Functional,,Programming,,Titles,,Check,,out,,these,,featured,,titles,,from,,O'Reilly,,Media,,and,,distributed,,publishers46Introducing,,WebGL,,Creating,,a,,WebGL,,wrapper,,to,,simplify,,the,,WebGL,,API,,WebGL.js,,Creating,,a,,triangular,,plane,,WebGL.js,,glMatrix-1.0.1.min,,index.html,,Rotating,,a,,triangular,,plane,,in,,3D,,space,,WebGL.js,,glMatrix-1.0.1.min,,index.html,,Creating,,a,,rotating,,cube,,WebGL.js,,glMatrix-1.0.1.min,,index.html,,Adding,,textures,,and,,lighting,,crate.jpg,,WebGL.js,,glMatrix-1.0.1.min,,index.html,,Creating,,a,,3D,,world,,that,,you,,can,,explore,,crate.jpg,,metalFloor.jpg,,metalWall.jpg,,ceiling.jpg,,WebGL.js,,glMatrix-1.0.1.min,,index.html,,You,,,can,,,also,,,see,,,more,,,Kindle,,,MatchBook,,,titles,,,here,,,or,,,look,,,up,,,all,,,of,,,your,,,Kindle,,,MatchBook,,,titles,,,herePinging,,is,,currently,,not,,allowedLearn,,more,,about,,Kindle,,MatchBookRequest,,,abortedShips,,from,,and,,sold,,by,,Amazon.comHave,,,one,,,to,,,sell?,,,Sell,,,on,,,Amazon,,,Flip,,,to,,,back,,,Flip,,,to,,,front,,,Listen,,,PlayingForbidden,,(403),,CSRF,,verification,,failedPowered,,,by,,,WordPressShipping,,to,,a,,APO/FPO/DPO?,,Please,,add,,the,,address,,to,,your,,address,,bookBy,,,the,,,end,,,of,,,this,,,book,,,,you,,,will,,,have,,,a,,,solid,,,understanding,,,of,,,the,,,HTML5,,,Canvas,,,API,,,and,,,a,,,toolbox,,,of,,,techniques,,,for,,,creating,,,any,,,type,,,of,,,HTML5,,,Canvas,,,application,,,,limited,,,only,,,by,,,the,,,extent,,,of,,,your,,,imaginationData,Science,for,Business,Learning,Spark,Hadoop,Fundamentals,for,Data,Scientists,and,6,more,>,Get,all,9,titles,for,a,60%,savingsMay,not,include,supplements,such,as,CD,,access,code,or,DVDInteracting,with,the,Canvas:,Attaching,Event,Listeners,to,Shapes,and,Regions,Creating,an,Events,class,events.js,Working,with,canvas,mouse,coordinates,events.js,index.html,Attaching,mouse,event,listeners,to,regions,events.js,index.html,Attaching,touch,event,listeners,to,regions,on,a,mobile,device,events.js,index.html,Attaching,event,listeners,to,images,challenger.jpg,cobra.jpg,events.js,index.html,Dragging-and-dropping,shapes,events.js,index.html,Dragging-and-dropping,images,challenger.jpg,events.js,index.html,Creating,an,image,magnifier,cobra280x210.jpg,cobra800x600.jpg,events.js,index.html,Creating,a,drawing,application,events.js,index.html,Print,,,edition,,,purchase,,,must,,,be,,,sold,,,by,,,AmazonSome,of,these,explanations,are,a,big,plus,,others,are,a,bit,too,simplistic,and,could,be,expounded,on,more.The,book,starts,out,very,gently,and,progresses,through,making,custom,events,,interaction,,animation,,and,finally,a,gamePlease,try,againThere's,,moreLearn,moreForbidden,(403),CSRF,verification,failedWorking,,with,,Images,,and,,Videos,,Drawing,,an,,image,,jet300x214.jpg,,index.html,,Cropping,,an,,image,,jet1000x714.jpg,,index.html,,Copying,,and,,pasting,,sections,,of,,the,,canvas,,index.html,,Working,,with,,video,,BigBuckBunny640x360.mp4,,BigBuckBunny640x360.ogv,,index.html,,Getting,,image,,data,,jet300x214.jpg,,index.html,,Introduction,,to,,pixel,,manipulation:,,inverting,,image,,colors,,jet300x214.jpg,,index.html,,Inverting,,video,,colors,,BigBuckBunny640x360.mp4,,BigBuckBunny640x360.ogv,,index.html,,Converting,,image,,colors,,to,,grayscale,,jet300x214.jpg,,index.html,,Converting,,a,,canvas,,drawing,,into,,a,,data,,URL,,index.html,,Saving,,a,,canvas,,drawing,,as,,an,,image,,index.html,,Loading,,the,,canvas,,with,,a,,data,,URL,,dataURL.txt,,index.html,,Creating,,a,,pixelated,,image,,focus,,jet300x214.jpg,,index.html,,Something,,we,,hope,,you'll,,especially,,enjoy:,,FBA,,items,,qualify,,for,,FREE,,Shipping,,and,,1Learn,more,This,item:,HTML5,Canvas,Cookbook,Set,up,a,giveaway,What,Other,Items,Do,Customers,Buy,After,Viewing,This,Item?,HTML5,Canvas,Paperback,Steve,Fulton,4.4,out,of,5,stars,7,$33.08,Prime,Core,HTML5,Canvas:,Graphics,,Animation,,and,Game,Development,(Core,Series),Paperback,David,Geary,4.6,out,of,5,stars,59,$38.47,Prime,There's,a,problem,loading,this,menu,right,nowPAGES,,/,,FORWARD,,OR,,BACK?,,Previous:,,Setting,,up,,the,,new,,staticfiles,,app,,on,,Django,,1.3,,Next:,,The,,Future,,of,,the,,Book:,,reading,,and,,annotating,,online,,Get,,,fast,,,,free,,,shipping,,,with,,,Amazon,,,Prime,,,Prime,,,members,,,enjoy,,,FREE,,,Two-Day,,,Shipping,,,and,,,exclusive,,,access,,,to,,,music,,,,movies,,,,TV,,,shows,,,,and,,,Kindle,,,booksApple,,Android,,Windows,,Phone,,Android,,To,,get,,the,,free,,app,,,enter,,your,,email,,address,,or,,mobile,,phone,,numberThank,you,for,your,feedback 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