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31 lines
8.6 KiB
31 lines
8.6 KiB
/* |
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* ---------------------------------------------------------------------------- |
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* "THE BEER-WARE LICENSE" (Revision 42): |
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* <Martin@Revoltera.com> wrote this file. As long as you retain this notice, |
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* you can do whatever you want with this stuff. If we meet some day, and you |
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* think this stuff is worth it, you can buy me a beer in return. |
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* ---------------------------------------------------------------------------- |
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*/ |
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(function($){$.fn.polygonizr=function(options){var defaults={restNodeMovements:1,duration:3,nodeMovementDistance:100,numberOfNodes:25,nodeDotSize:2.5,nodeEase:"easeOut",nodeFancyEntrance:!1,randomizePolygonMeshNetworkFormation:!0,specifyPolygonMeshNetworkFormation:function(i){var forEachNode={x:this.canvasWidth-((this.canvasWidth/2)+(this.canvasHeight/2)*Math.cos(i*(2*Math.PI/this.numberOfNodes)))*Math.random(),y:this.canvasHeight-(this.canvasHeight*(i/this.numberOfNodes))};return forEachNode},nodeRelations:3,animationFps:30,nodeDotColor:"240, 255, 250",nodeLineColor:"240, 255, 250",nodeFillColor:"240, 255, 250",nodeFillAlpha:0.5,nodeLineAlpha:0.5,nodeDotAlpha:1.0,nodeFillSapce:!0,nodeGlowing:!1,canvasWidth:$(this).width(),canvasHeight:$(this).height(),canvasPosition:"absolute"};var settings=$.extend({},defaults,options);return this.each(function(){var m_this=$(this);var canvasElement=document.createElement('canvas');canvasElement.width=settings.canvasWidth;canvasElement.height=settings.canvasHeight;canvasElement.style.position=settings.canvasPosition;m_this.append(canvasElement);var ctx=canvasElement.getContext('2d');var nodes=[];setupClusterNodes();startNodeAnimations();function setupClusterNodes(){for(var i=0;i<settings.numberOfNodes;i++){var currentNode={x:0,y:0};if(settings.randomizePolygonMeshNetworkFormation){currentNode.x=Math.random()*settings.canvasWidth;currentNode.y=Math.random()*settings.canvasHeight}else{currentNode=settings.specifyPolygonMeshNetworkFormation(i)} |
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nodes.push({currentX:currentNode.x,originX:currentNode.x,startX:currentNode.x,targetX:currentNode.x,currentY:currentNode.y,originY:currentNode.y,startY:currentNode.x,targetY:currentNode.y})} |
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for(var i=0;i<nodes.length;i++){var closest=[];var node=nodes[i];for(var j=0;j<nodes.length;j++){var tempNode=nodes[j];if(node!=tempNode){for(var k=0;k<settings.nodeRelations;k++){if(closest[k]==undefined){closest[k]=tempNode;break}if(getDistance(node,tempNode)<getDistance(node,closest[k])){closest[k]=tempNode;break}}}} |
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node.Closest=closest;setAlphaLevel(nodes[i])}} |
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function startNodeAnimations(){var animator=new Animator(settings.nodeEase,settings.animationFps,settings.duration,settings.restNodeMovements,settings.nodeFancyEntrance,draw);animator.start()} |
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const Constants={Animation:{EASING_LINEAR:"linear",EASING_EASEIN:"easeIn",EASING_EASEOUT:"easeOut",EASING_EASEINOUT:"easeInOut",EASING_ACCELERATE:"accelerateDecelerate",EASING_DESCENDING:"descendingEntrance"}};function Animator(easing,fps,duration,delay,fancyEntrance,callback){function step(timestamp){if(!m_startTime)m_startTime=timestamp;if(!m_lastFrameUpdate)m_lastFrameUpdate=timestamp;var currentFrame=Math.floor((timestamp-m_startTime)/(1000/fps));if(m_frameCount<currentFrame){m_frameCount=currentFrame;var currentDuration=timestamp-m_lastFrameUpdate;if(currentDuration<=m_duration){if(m_newTargetPossition){setNewTargetPossition();m_newTargetPossition=!1} |
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if(m_entranceSingleton&&fancyEntrance){setNewNodePossition(Constants.Animation.EASING_DESCENDING,currentDuration,m_duration)}else{setNewNodePossition(easing,currentDuration,m_duration)} |
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if(callback&&typeof(callback)==="function"){callback()}}else if(currentDuration>=(m_duration+m_delay)){m_lastFrameUpdate=timestamp;m_newTargetPossition=!0;m_entranceSingleton=!1}} |
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m_requestId=m_requestAnimationFrame(step)} |
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this.isRunning=!1;this.start=function(){if(!this.isRunning){this.isRunning=!0;m_duration=duration*1000;m_delay=delay*1000;m_requestId=m_requestAnimationFrame(step)}};this.pause=function(){if(this.isRunning){m_cancleAnimationFrame(m_requestId);this.isRunning=!1;m_startTime=null;m_frameCount=-1}};var m_requestAnimationFrame=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame;var m_cancleAnimationFrame=window.cancelAnimationFrame||window.mozCancelRequestAnimationFrame||window.webkitCancelRequestAnimationFrame||window.oCancelRequestAnimationFrame||window.msCancelRequestAnimationFrame;var m_startTime=null;var m_frameCount=-1 |
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var m_requestId=null;var m_lastFrameUpdate=null;var m_newTargetPossition=!0;var m_entranceSingleton=!0;var m_duration;var m_delay} |
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function getEasing(easing,currentTime,startPossition,targetPossition,endTime){switch(easing){case Constants.Animation.EASING_LINEAR:return(targetPossition-startPossition)*(currentTime/endTime)+startPossition;break;case Constants.Animation.EASING_EASEIN:currentTime/=endTime;return(targetPossition-startPossition)*Math.pow(currentTime,2)+startPossition;case Constants.Animation.EASING_EASEOUT:currentTime/=endTime;return-(targetPossition-startPossition)*currentTime*(currentTime-2)+startPossition;case Constants.Animation.EASING_EASEINOUT:currentTime/=(endTime/2);if(currentTime<1)return(targetPossition-startPossition)/2*Math.pow(currentTime,2)+startPossition;return-(targetPossition-startPossition)/2*((currentTime-1)*((currentTime-1)-2)-1)+startPossition;break;case Constants.Animation.EASING_ACCELERATE:currentTime/=(endTime/2);if(currentTime<1)return(targetPossition-startPossition)/2*Math.pow(currentTime,3)+startPossition;return(targetPossition-startPossition)/2*(Math.pow(currentTime-2,3)+2)+startPossition;break;case Constants.Animation.EASING_DESCENDING:currentTime/=(endTime/2);if(currentTime<1)return(targetPossition-startPossition)/Math.pow(currentTime,3)+startPossition;return(targetPossition-startPossition)/(Math.pow(currentTime-2,3)+2)+startPossition;break;default:return getEasing(Constants.Animation.EASING_LINEAR,currentTime,startPossition,targetPossition,endTime)}} |
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function setNewNodePossition(easing,currentTime,endTime){for(var i in nodes){nodes[i].currentX=getEasing(easing,currentTime,nodes[i].startX,nodes[i].targetX,endTime);nodes[i].currentY=getEasing(easing,currentTime,nodes[i].startY,nodes[i].targetY,endTime)}} |
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function setNewTargetPossition(){for(var i in nodes){nodes[i].targetX=nodes[i].originX+(Math.random()<0.5?-Math.random():Math.random())*settings.nodeMovementDistance;nodes[i].targetY=nodes[i].originY+(Math.random()<0.5?-Math.random():Math.random())*settings.nodeMovementDistance;nodes[i].startX=nodes[i].currentX;nodes[i].startY=nodes[i].currentY}} |
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function setAlphaLevel(node){var screenDistance=Math.sqrt(Math.pow(settings.canvasWidth,2)+Math.pow(settings.canvasHeight,2));var nodeDistance=getDistance(node,node.Closest[0]);for(var i in node.Closest){nodeDistance+=getDistance(node.Closest[i],node.Closest[(i+1)%node.Closest.length])} |
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var generalAlpha=1-(nodeDistance/screenDistance);node.lineAlpha=generalAlpha*settings.nodeLineAlpha;node.dotAlpha=generalAlpha*settings.nodeDotAlpha;if(generalAlpha>0.85){node.fillAlpha=generalAlpha*settings.nodeFillAlpha;node.lineAlpha=settings.nodeLineAlpha;node.dotAlpha=settings.nodeDotAlpha}else if(generalAlpha<0.8&&generalAlpha>0.7){node.fillAlpha=0.5*generalAlpha*settings.nodeFillAlpha;node.lineAlpha=settings.nodeLineAlpha;node.dotAlpha=settings.nodeDotAlpha}else if(generalAlpha<0.7&&generalAlpha>0.4){node.fillAlpha=0.2*generalAlpha*settings.nodeFillAlpha}else{node.fillAlpha=0}} |
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function draw(){ctx.clearRect(0,0,settings.canvasWidth,settings.canvasHeight);for(var i in nodes){drawLines(nodes[i]);drawCircle(nodes[i])}} |
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function drawLines(node){if(!node.lineAlpha>0&&!node.fillAlpha>0)return;for(var i in node.Closest){if(node.lineAlpha>0){ctx.beginPath();ctx.moveTo(node.currentX,node.currentY);ctx.lineTo(node.Closest[i].currentX,node.Closest[i].currentY);ctx.strokeStyle='rgba('+settings.nodeLineColor+','+node.lineAlpha+')';ctx.stroke()} |
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if(settings.nodeFillSapce&&node.fillAlpha>0){ctx.beginPath();ctx.moveTo(node.currentX,node.currentY);ctx.lineTo(node.Closest[i].currentX,node.Closest[i].currentY);ctx.lineTo(node.Closest[(i+1)%node.Closest.length].currentX,node.Closest[(i+1)%node.Closest.length].currentY);ctx.fillStyle='rgba('+settings.nodeFillColor+','+node.fillAlpha+')';ctx.fill()}}} |
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function drawCircle(node){if(!node.dotAlpha>0)return;ctx.beginPath();ctx.arc(node.currentX,node.currentY,settings.nodeDotSize,0,Math.PI*2,!1);ctx.fillStyle='rgba('+settings.nodeDotColor+', '+node.dotAlpha+')';if(settings.nodeGlowing){ctx.shadowBlur=10;ctx.shadowColor='rgba('+settings.nodeDotColor+', '+node.dotAlpha+')'} |
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ctx.fill()} |
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function getDistance(firstNode,secondNode){return Math.sqrt(Math.pow(firstNode.currentX-secondNode.currentX,2)+Math.pow(firstNode.currentY-secondNode.currentY,2))}})}}(jQuery))
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