Difference between revisions of "Template:UCL/Particle JS"

Revision as of 17:43, 13 September 2018

var pJS = function(tag_id, params){

 var canvas_el = document.querySelector('#'+tag_id+' > .particles-js-canvas-el');

 /* particles.js variables with default values */
 this.pJS = {
   canvas: {
     el: canvas_el,
     w: canvas_el.offsetWidth,
     h: canvas_el.offsetHeight
   },
   particles: {
     number: {
       value: 400,
       density: {
         enable: true,
         value_area: 800
       }
     },
     color: {
       value: '#fff'
     },
     shape: {
       type: 'circle',
       stroke: {
         width: 0,
         color: '#ff0000'
       },
       polygon: {
         nb_sides: 5
       },
       image: {
         src: ,
         width: 100,
         height: 100
       }
     },
     opacity: {
       value: 1,
       random: false,
       anim: {
         enable: false,
         speed: 2,
         opacity_min: 0,
         sync: false
       }
     },
     size: {
       value: 20,
       random: false,
       anim: {
         enable: false,
         speed: 20,
         size_min: 0,
         sync: false
       }
     },
     line_linked: {
       enable: true,
       distance: 100,
       color: '#fff',
       opacity: 1,
       width: 1
     },
     move: {
       enable: true,
       speed: 2,
       direction: 'none',
       random: false,
       straight: false,
       out_mode: 'out',
       bounce: false,
       attract: {
         enable: false,
         rotateX: 3000,
         rotateY: 3000
       }
     },
     array: []
   },
   interactivity: {
     detect_on: 'canvas',
     events: {
       onhover: {
         enable: true,
         mode: 'grab'
       },
       onclick: {
         enable: true,
         mode: 'push'
       },
       resize: true
     },
     modes: {
       grab:{
         distance: 100,
         line_linked:{
           opacity: 1
         }
       },
       bubble:{
         distance: 200,
         size: 80,
         duration: 0.4
       },
       repulse:{
         distance: 200,
         duration: 0.4
       },
       push:{
         particles_nb: 4
       },
       remove:{
         particles_nb: 2
       }
     },
     mouse:{}
   },
   retina_detect: false,
   fn: {
     interact: {},
     modes: {},
     vendors:{}
   },
   tmp: {}
 };

 var pJS = this.pJS;

 /* params settings */
 if(params){
   Object.deepExtend(pJS, params);
 }

 pJS.tmp.obj = {
   size_value: pJS.particles.size.value,
   size_anim_speed: pJS.particles.size.anim.speed,
   move_speed: pJS.particles.move.speed,
   line_linked_distance: pJS.particles.line_linked.distance,
   line_linked_width: pJS.particles.line_linked.width,
   mode_grab_distance: pJS.interactivity.modes.grab.distance,
   mode_bubble_distance: pJS.interactivity.modes.bubble.distance,
   mode_bubble_size: pJS.interactivity.modes.bubble.size,
   mode_repulse_distance: pJS.interactivity.modes.repulse.distance
 };

 pJS.fn.retinaInit = function(){

   if(pJS.retina_detect && window.devicePixelRatio > 1){
     pJS.canvas.pxratio = window.devicePixelRatio; 
     pJS.tmp.retina = true;
   } 
   else{
     pJS.canvas.pxratio = 1;
     pJS.tmp.retina = false;
   }

   pJS.canvas.w = pJS.canvas.el.offsetWidth * pJS.canvas.pxratio;
   pJS.canvas.h = pJS.canvas.el.offsetHeight * pJS.canvas.pxratio;

   pJS.particles.size.value = pJS.tmp.obj.size_value * pJS.canvas.pxratio;
   pJS.particles.size.anim.speed = pJS.tmp.obj.size_anim_speed * pJS.canvas.pxratio;
   pJS.particles.move.speed = pJS.tmp.obj.move_speed * pJS.canvas.pxratio;
   pJS.particles.line_linked.distance = pJS.tmp.obj.line_linked_distance * pJS.canvas.pxratio;
   pJS.interactivity.modes.grab.distance = pJS.tmp.obj.mode_grab_distance * pJS.canvas.pxratio;
   pJS.interactivity.modes.bubble.distance = pJS.tmp.obj.mode_bubble_distance * pJS.canvas.pxratio;
   pJS.particles.line_linked.width = pJS.tmp.obj.line_linked_width * pJS.canvas.pxratio;
   pJS.interactivity.modes.bubble.size = pJS.tmp.obj.mode_bubble_size * pJS.canvas.pxratio;
   pJS.interactivity.modes.repulse.distance = pJS.tmp.obj.mode_repulse_distance * pJS.canvas.pxratio;

};

 /* ---------- pJS functions - canvas ------------ */

 pJS.fn.canvasInit = function(){
   pJS.canvas.ctx = pJS.canvas.el.getContext('2d');
 };

 pJS.fn.canvasSize = function(){

   pJS.canvas.el.width = pJS.canvas.w;
   pJS.canvas.el.height = pJS.canvas.h;

   if(pJS && pJS.interactivity.events.resize){

     window.addEventListener('resize', function(){

         pJS.canvas.w = pJS.canvas.el.offsetWidth;
         pJS.canvas.h = pJS.canvas.el.offsetHeight;

         /* resize canvas */
         if(pJS.tmp.retina){
           pJS.canvas.w *= pJS.canvas.pxratio;
           pJS.canvas.h *= pJS.canvas.pxratio;
         }

         pJS.canvas.el.width = pJS.canvas.w;
         pJS.canvas.el.height = pJS.canvas.h;

         /* repaint canvas on anim disabled */
         if(!pJS.particles.move.enable){
           pJS.fn.particlesEmpty();
           pJS.fn.particlesCreate();
           pJS.fn.particlesDraw();
           pJS.fn.vendors.densityAutoParticles();
         }

       /* density particles enabled */
       pJS.fn.vendors.densityAutoParticles();

});

};

 pJS.fn.canvasPaint = function(){
   pJS.canvas.ctx.fillRect(0, 0, pJS.canvas.w, pJS.canvas.h);
 };

 pJS.fn.canvasClear = function(){
   pJS.canvas.ctx.clearRect(0, 0, pJS.canvas.w, pJS.canvas.h);
 };

 /* --------- pJS functions - particles ----------- */

 pJS.fn.particle = function(color, opacity, position){

   /* size */
   this.radius = (pJS.particles.size.random ? Math.random() : 1) * pJS.particles.size.value;
   if(pJS.particles.size.anim.enable){
     this.size_status = false;
     this.vs = pJS.particles.size.anim.speed / 100;
     if(!pJS.particles.size.anim.sync){
       this.vs = this.vs * Math.random();
     }
   }

   /* position */
   this.x = position ? position.x : Math.random() * pJS.canvas.w;
   this.y = position ? position.y : Math.random() * pJS.canvas.h;

   /* check position  - into the canvas */
   if(this.x > pJS.canvas.w - this.radius*2) this.x = this.x - this.radius;
   else if(this.x < this.radius*2) this.x = this.x + this.radius;
   if(this.y > pJS.canvas.h - this.radius*2) this.y = this.y - this.radius;
   else if(this.y < this.radius*2) this.y = this.y + this.radius;

   /* check position - avoid overlap */
   if(pJS.particles.move.bounce){
     pJS.fn.vendors.checkOverlap(this, position);
   }

   /* color */
   this.color = {};
   if(typeof(color.value) == 'object'){

     if(color.value instanceof Array){
       var color_selected = color.value[Math.floor(Math.random() * pJS.particles.color.value.length)];
       this.color.rgb = hexToRgb(color_selected);
     }else{
       if(color.value.r != undefined && color.value.g != undefined && color.value.b != undefined){
         this.color.rgb = {
           r: color.value.r,
           g: color.value.g,
           b: color.value.b
         }
       }
       if(color.value.h != undefined && color.value.s != undefined && color.value.l != undefined){
         this.color.hsl = {
           h: color.value.h,
           s: color.value.s,
           l: color.value.l
         }
       }
     }

   }
   else if(color.value == 'random'){
     this.color.rgb = {
       r: (Math.floor(Math.random() * (255 - 0 + 1)) + 0),
       g: (Math.floor(Math.random() * (255 - 0 + 1)) + 0),
       b: (Math.floor(Math.random() * (255 - 0 + 1)) + 0)
     }
   }
   else if(typeof(color.value) == 'string'){
     this.color = color;
     this.color.rgb = hexToRgb(this.color.value);
   }

   /* opacity */
   this.opacity = (pJS.particles.opacity.random ? Math.random() : 1) * pJS.particles.opacity.value;
   if(pJS.particles.opacity.anim.enable){
     this.opacity_status = false;
     this.vo = pJS.particles.opacity.anim.speed / 100;
     if(!pJS.particles.opacity.anim.sync){
       this.vo = this.vo * Math.random();
     }
   }

   /* animation - velocity for speed */
   var velbase = {}
   switch(pJS.particles.move.direction){
     case 'top':
       velbase = { x:0, y:-1 };
     break;
     case 'top-right':
       velbase = { x:0.5, y:-0.5 };
     break;
     case 'right':
       velbase = { x:1, y:-0 };
     break;
     case 'bottom-right':
       velbase = { x:0.5, y:0.5 };
     break;
     case 'bottom':
       velbase = { x:0, y:1 };
     break;
     case 'bottom-left':
       velbase = { x:-0.5, y:1 };
     break;
     case 'left':
       velbase = { x:-1, y:0 };
     break;
     case 'top-left':
       velbase = { x:-0.5, y:-0.5 };
     break;
     default:
       velbase = { x:0, y:0 };
     break;
   }

   if(pJS.particles.move.straight){
     this.vx = velbase.x;
     this.vy = velbase.y;
     if(pJS.particles.move.random){
       this.vx = this.vx * (Math.random());
       this.vy = this.vy * (Math.random());
     }
   }else{
     this.vx = velbase.x + Math.random()-0.5;
     this.vy = velbase.y + Math.random()-0.5;
   }

   // var theta = 2.0 * Math.PI * Math.random();
   // this.vx = Math.cos(theta);
   // this.vy = Math.sin(theta);

   this.vx_i = this.vx;
   this.vy_i = this.vy;

   /* if shape is image */

   var shape_type = pJS.particles.shape.type;
   if(typeof(shape_type) == 'object'){
     if(shape_type instanceof Array){
       var shape_selected = shape_type[Math.floor(Math.random() * shape_type.length)];
       this.shape = shape_selected;
     }
   }else{
     this.shape = shape_type;
   }

   if(this.shape == 'image'){
     var sh = pJS.particles.shape;
     this.img = {
       src: sh.image.src,
       ratio: sh.image.width / sh.image.height
     }
     if(!this.img.ratio) this.img.ratio = 1;
     if(pJS.tmp.img_type == 'svg' && pJS.tmp.source_svg != undefined){
       pJS.fn.vendors.createSvgImg(this);
       if(pJS.tmp.pushing){
         this.img.loaded = false;
       }
     }
   }

};

 pJS.fn.particle.prototype.draw = function() {

   var p = this;

   if(p.radius_bubble != undefined){
     var radius = p.radius_bubble; 
   }else{
     var radius = p.radius;
   }

   if(p.opacity_bubble != undefined){
     var opacity = p.opacity_bubble;
   }else{
     var opacity = p.opacity;
   }

   if(p.color.rgb){
     var color_value = 'rgba('+p.color.rgb.r+','+p.color.rgb.g+','+p.color.rgb.b+','+opacity+')';
   }else{
     var color_value = 'hsla('+p.color.hsl.h+','+p.color.hsl.s+'%,'+p.color.hsl.l+'%,'+opacity+')';
   }

   pJS.canvas.ctx.fillStyle = color_value;
   pJS.canvas.ctx.beginPath();

   switch(p.shape){

     case 'circle':
       pJS.canvas.ctx.arc(p.x, p.y, radius, 0, Math.PI * 2, false);
     break;

     case 'edge':
       pJS.canvas.ctx.rect(p.x-radius, p.y-radius, radius*2, radius*2);
     break;

     case 'triangle':
       pJS.fn.vendors.drawShape(pJS.canvas.ctx, p.x-radius, p.y+radius / 1.66, radius*2, 3, 2);
     break;

     case 'polygon':
       pJS.fn.vendors.drawShape(
         pJS.canvas.ctx,
         p.x - radius / (pJS.particles.shape.polygon.nb_sides/3.5), // startX
         p.y - radius / (2.66/3.5), // startY
         radius*2.66 / (pJS.particles.shape.polygon.nb_sides/3), // sideLength
         pJS.particles.shape.polygon.nb_sides, // sideCountNumerator
         1 // sideCountDenominator
       );
     break;

     case 'star':
       pJS.fn.vendors.drawShape(
         pJS.canvas.ctx,
         p.x - radius*2 / (pJS.particles.shape.polygon.nb_sides/4), // startX
         p.y - radius / (2*2.66/3.5), // startY
         radius*2*2.66 / (pJS.particles.shape.polygon.nb_sides/3), // sideLength
         pJS.particles.shape.polygon.nb_sides, // sideCountNumerator
         2 // sideCountDenominator
       );
     break;

     case 'image':

       function draw(){
         pJS.canvas.ctx.drawImage(
           img_obj,
           p.x-radius,
           p.y-radius,
           radius*2,
           radius*2 / p.img.ratio
         );
       }

       if(pJS.tmp.img_type == 'svg'){
         var img_obj = p.img.obj;
       }else{
         var img_obj = pJS.tmp.img_obj;
       }

       if(img_obj){
         draw();
       }

     break;

   pJS.canvas.ctx.closePath();

   if(pJS.particles.shape.stroke.width > 0){
     pJS.canvas.ctx.strokeStyle = pJS.particles.shape.stroke.color;
     pJS.canvas.ctx.lineWidth = pJS.particles.shape.stroke.width;
     pJS.canvas.ctx.stroke();
   }
   
   pJS.canvas.ctx.fill();
   
 };

 pJS.fn.particlesCreate = function(){
   for(var i = 0; i < pJS.particles.number.value; i++) {
     pJS.particles.array.push(new pJS.fn.particle(pJS.particles.color, pJS.particles.opacity.value));
   }
 };

 pJS.fn.particlesUpdate = function(){

   for(var i = 0; i < pJS.particles.array.length; i++){

     /* the particle */
     var p = pJS.particles.array[i];

     // var d = ( dx = pJS.interactivity.mouse.click_pos_x - p.x ) * dx + ( dy = pJS.interactivity.mouse.click_pos_y - p.y ) * dy;
     // var f = -BANG_SIZE / d;
     // if ( d < BANG_SIZE ) {
     //     var t = Math.atan2( dy, dx );
     //     p.vx = f * Math.cos(t);
     //     p.vy = f * Math.sin(t);
     // }

     /* move the particle */
     if(pJS.particles.move.enable){
       var ms = pJS.particles.move.speed/2;
       p.x += p.vx * ms;
       p.y += p.vy * ms;
     }

     /* change opacity status */
     if(pJS.particles.opacity.anim.enable) {
       if(p.opacity_status == true) {
         if(p.opacity >= pJS.particles.opacity.value) p.opacity_status = false;
         p.opacity += p.vo;
       }else {
         if(p.opacity <= pJS.particles.opacity.anim.opacity_min) p.opacity_status = true;
         p.opacity -= p.vo;
       }
       if(p.opacity < 0) p.opacity = 0;
     }

     /* change size */
     if(pJS.particles.size.anim.enable){
       if(p.size_status == true){
         if(p.radius >= pJS.particles.size.value) p.size_status = false;
         p.radius += p.vs;
       }else{
         if(p.radius <= pJS.particles.size.anim.size_min) p.size_status = true;
         p.radius -= p.vs;
       }
       if(p.radius < 0) p.radius = 0;
     }

     /* change particle position if it is out of canvas */
     if(pJS.particles.move.out_mode == 'bounce'){
       var new_pos = {
         x_left: p.radius,
         x_right:  pJS.canvas.w,
         y_top: p.radius,
         y_bottom: pJS.canvas.h
       }
     }else{
       var new_pos = {
         x_left: -p.radius,
         x_right: pJS.canvas.w + p.radius,
         y_top: -p.radius,
         y_bottom: pJS.canvas.h + p.radius
       }
     }

     if(p.x - p.radius > pJS.canvas.w){
       p.x = new_pos.x_left;
       p.y = Math.random() * pJS.canvas.h;
     }
     else if(p.x + p.radius < 0){
       p.x = new_pos.x_right;
       p.y = Math.random() * pJS.canvas.h;
     }
     if(p.y - p.radius > pJS.canvas.h){
       p.y = new_pos.y_top;
       p.x = Math.random() * pJS.canvas.w;
     }
     else if(p.y + p.radius < 0){
       p.y = new_pos.y_bottom;
       p.x = Math.random() * pJS.canvas.w;
     }

     /* out of canvas modes */
     switch(pJS.particles.move.out_mode){
       case 'bounce':
         if (p.x + p.radius > pJS.canvas.w) p.vx = -p.vx;
         else if (p.x - p.radius < 0) p.vx = -p.vx;
         if (p.y + p.radius > pJS.canvas.h) p.vy = -p.vy;
         else if (p.y - p.radius < 0) p.vy = -p.vy;
       break;
     }

     /* events */
     if(isInArray('grab', pJS.interactivity.events.onhover.mode)){
       pJS.fn.modes.grabParticle(p);
     }

     if(isInArray('bubble', pJS.interactivity.events.onhover.mode) || isInArray('bubble', pJS.interactivity.events.onclick.mode)){
       pJS.fn.modes.bubbleParticle(p);
     }

     if(isInArray('repulse', pJS.interactivity.events.onhover.mode) || isInArray('repulse', pJS.interactivity.events.onclick.mode)){
       pJS.fn.modes.repulseParticle(p);
     }

     /* interaction auto between particles */
     if(pJS.particles.line_linked.enable || pJS.particles.move.attract.enable){
       for(var j = i + 1; j < pJS.particles.array.length; j++){
         var p2 = pJS.particles.array[j];

         /* link particles */
         if(pJS.particles.line_linked.enable){
           pJS.fn.interact.linkParticles(p,p2);
         }

         /* attract particles */
         if(pJS.particles.move.attract.enable){
           pJS.fn.interact.attractParticles(p,p2);
         }

         /* bounce particles */
         if(pJS.particles.move.bounce){
           pJS.fn.interact.bounceParticles(p,p2);
         }

       }
     }

};

 pJS.fn.particlesDraw = function(){

   /* clear canvas */
   pJS.canvas.ctx.clearRect(0, 0, pJS.canvas.w, pJS.canvas.h);

   /* update each particles param */
   pJS.fn.particlesUpdate();

   /* draw each particle */
   for(var i = 0; i < pJS.particles.array.length; i++){
     var p = pJS.particles.array[i];
     p.draw();
   }

};

 pJS.fn.particlesEmpty = function(){
   pJS.particles.array = [];
 };

 pJS.fn.particlesRefresh = function(){

   /* init all */
   cancelRequestAnimFrame(pJS.fn.checkAnimFrame);
   cancelRequestAnimFrame(pJS.fn.drawAnimFrame);
   pJS.tmp.source_svg = undefined;
   pJS.tmp.img_obj = undefined;
   pJS.tmp.count_svg = 0;
   pJS.fn.particlesEmpty();
   pJS.fn.canvasClear();
   
   /* restart */
   pJS.fn.vendors.start();

};

 /* ---------- pJS functions - particles interaction ------------ */

 pJS.fn.interact.linkParticles = function(p1, p2){

   var dx = p1.x - p2.x,
       dy = p1.y - p2.y,
       dist = Math.sqrt(dx*dx + dy*dy);

   /* draw a line between p1 and p2 if the distance between them is under the config distance */
   if(dist <= pJS.particles.line_linked.distance){

     var opacity_line = pJS.particles.line_linked.opacity - (dist / (1/pJS.particles.line_linked.opacity)) / pJS.particles.line_linked.distance;

     if(opacity_line > 0){        
       
       /* style */
       var color_line = pJS.particles.line_linked.color_rgb_line;
       pJS.canvas.ctx.strokeStyle = 'rgba('+color_line.r+','+color_line.g+','+color_line.b+','+opacity_line+')';
       pJS.canvas.ctx.lineWidth = pJS.particles.line_linked.width;
       //pJS.canvas.ctx.lineCap = 'round'; /* performance issue */
       
       /* path */
       pJS.canvas.ctx.beginPath();
       pJS.canvas.ctx.moveTo(p1.x, p1.y);
       pJS.canvas.ctx.lineTo(p2.x, p2.y);
       pJS.canvas.ctx.stroke();
       pJS.canvas.ctx.closePath();

};

 pJS.fn.interact.attractParticles  = function(p1, p2){

   /* condensed particles */
   var dx = p1.x - p2.x,
       dy = p1.y - p2.y,
       dist = Math.sqrt(dx*dx + dy*dy);

   if(dist <= pJS.particles.line_linked.distance){

     var ax = dx/(pJS.particles.move.attract.rotateX*1000),
         ay = dy/(pJS.particles.move.attract.rotateY*1000);

     p1.vx -= ax;
     p1.vy -= ay;

     p2.vx += ax;
     p2.vy += ay;

 pJS.fn.interact.bounceParticles = function(p1, p2){

   var dx = p1.x - p2.x,
       dy = p1.y - p2.y,
       dist = Math.sqrt(dx*dx + dy*dy),
       dist_p = p1.radius+p2.radius;

   if(dist <= dist_p){
     p1.vx = -p1.vx;
     p1.vy = -p1.vy;

     p2.vx = -p2.vx;
     p2.vy = -p2.vy;
   }

 /* ---------- pJS functions - modes events ------------ */

 pJS.fn.modes.pushParticles = function(nb, pos){

   pJS.tmp.pushing = true;

   for(var i = 0; i < nb; i++){
     pJS.particles.array.push(
       new pJS.fn.particle(
         pJS.particles.color,
         pJS.particles.opacity.value,
         {
           'x': pos ? pos.pos_x : Math.random() * pJS.canvas.w,
           'y': pos ? pos.pos_y : Math.random() * pJS.canvas.h
         }
       )
     )
     if(i == nb-1){
       if(!pJS.particles.move.enable){
         pJS.fn.particlesDraw();
       }
       pJS.tmp.pushing = false;
     }
   }

};

 pJS.fn.modes.removeParticles = function(nb){

   pJS.particles.array.splice(0, nb);
   if(!pJS.particles.move.enable){
     pJS.fn.particlesDraw();
   }

};

 pJS.fn.modes.bubbleParticle = function(p){

   /* on hover event */
   if(pJS.interactivity.events.onhover.enable && isInArray('bubble', pJS.interactivity.events.onhover.mode)){

     var dx_mouse = p.x - pJS.interactivity.mouse.pos_x,
         dy_mouse = p.y - pJS.interactivity.mouse.pos_y,
         dist_mouse = Math.sqrt(dx_mouse*dx_mouse + dy_mouse*dy_mouse),
         ratio = 1 - dist_mouse / pJS.interactivity.modes.bubble.distance;

     function init(){
       p.opacity_bubble = p.opacity;
       p.radius_bubble = p.radius;
     }

     /* mousemove - check ratio */
     if(dist_mouse <= pJS.interactivity.modes.bubble.distance){

       if(ratio >= 0 && pJS.interactivity.status == 'mousemove'){
         
         /* size */
         if(pJS.interactivity.modes.bubble.size != pJS.particles.size.value){

           if(pJS.interactivity.modes.bubble.size > pJS.particles.size.value){
             var size = p.radius + (pJS.interactivity.modes.bubble.size*ratio);
             if(size >= 0){
               p.radius_bubble = size;
             }
           }else{
             var dif = p.radius - pJS.interactivity.modes.bubble.size,
                 size = p.radius - (dif*ratio);
             if(size > 0){
               p.radius_bubble = size;
             }else{
               p.radius_bubble = 0;
             }
           }

         /* opacity */
         if(pJS.interactivity.modes.bubble.opacity != pJS.particles.opacity.value){

           if(pJS.interactivity.modes.bubble.opacity > pJS.particles.opacity.value){
             var opacity = pJS.interactivity.modes.bubble.opacity*ratio;
             if(opacity > p.opacity && opacity <= pJS.interactivity.modes.bubble.opacity){
               p.opacity_bubble = opacity;
             }
           }else{
             var opacity = p.opacity - (pJS.particles.opacity.value-pJS.interactivity.modes.bubble.opacity)*ratio;
             if(opacity < p.opacity && opacity >= pJS.interactivity.modes.bubble.opacity){
               p.opacity_bubble = opacity;
             }
           }

     }else{
       init();
     }

     /* mouseleave */
     if(pJS.interactivity.status == 'mouseleave'){
       init();
     }
   
   }

   /* on click event */
   else if(pJS.interactivity.events.onclick.enable && isInArray('bubble', pJS.interactivity.events.onclick.mode)){

     if(pJS.tmp.bubble_clicking){
       var dx_mouse = p.x - pJS.interactivity.mouse.click_pos_x,
           dy_mouse = p.y - pJS.interactivity.mouse.click_pos_y,
           dist_mouse = Math.sqrt(dx_mouse*dx_mouse + dy_mouse*dy_mouse),
           time_spent = (new Date().getTime() - pJS.interactivity.mouse.click_time)/1000;

       if(time_spent > pJS.interactivity.modes.bubble.duration){
         pJS.tmp.bubble_duration_end = true;
       }

       if(time_spent > pJS.interactivity.modes.bubble.duration*2){
         pJS.tmp.bubble_clicking = false;
         pJS.tmp.bubble_duration_end = false;
       }
     }

     function process(bubble_param, particles_param, p_obj_bubble, p_obj, id){

       if(bubble_param != particles_param){

         if(!pJS.tmp.bubble_duration_end){
           if(dist_mouse <= pJS.interactivity.modes.bubble.distance){
             if(p_obj_bubble != undefined) var obj = p_obj_bubble;
             else var obj = p_obj;
             if(obj != bubble_param){
               var value = p_obj - (time_spent * (p_obj - bubble_param) / pJS.interactivity.modes.bubble.duration);
               if(id == 'size') p.radius_bubble = value;
               if(id == 'opacity') p.opacity_bubble = value;
             }
           }else{
             if(id == 'size') p.radius_bubble = undefined;
             if(id == 'opacity') p.opacity_bubble = undefined;
           }
         }else{
           if(p_obj_bubble != undefined){
             var value_tmp = p_obj - (time_spent * (p_obj - bubble_param) / pJS.interactivity.modes.bubble.duration),
                 dif = bubble_param - value_tmp;
                 value = bubble_param + dif;
             if(id == 'size') p.radius_bubble = value;
             if(id == 'opacity') p.opacity_bubble = value;
           }
         }

     if(pJS.tmp.bubble_clicking){
       /* size */
       process(pJS.interactivity.modes.bubble.size, pJS.particles.size.value, p.radius_bubble, p.radius, 'size');
       /* opacity */
       process(pJS.interactivity.modes.bubble.opacity, pJS.particles.opacity.value, p.opacity_bubble, p.opacity, 'opacity');
     }

};

 pJS.fn.modes.repulseParticle = function(p){

   if(pJS.interactivity.events.onhover.enable && isInArray('repulse', pJS.interactivity.events.onhover.mode) && pJS.interactivity.status == 'mousemove') {

     var dx_mouse = p.x - pJS.interactivity.mouse.pos_x,
         dy_mouse = p.y - pJS.interactivity.mouse.pos_y,
         dist_mouse = Math.sqrt(dx_mouse*dx_mouse + dy_mouse*dy_mouse);

     var normVec = {x: dx_mouse/dist_mouse, y: dy_mouse/dist_mouse},
         repulseRadius = pJS.interactivity.modes.repulse.distance,
         velocity = 100,
         repulseFactor = clamp((1/repulseRadius)*(-1*Math.pow(dist_mouse/repulseRadius,2)+1)*repulseRadius*velocity, 0, 50);
     
     var pos = {
       x: p.x + normVec.x * repulseFactor,
       y: p.y + normVec.y * repulseFactor
     }

     if(pJS.particles.move.out_mode == 'bounce'){
       if(pos.x - p.radius > 0 && pos.x + p.radius < pJS.canvas.w) p.x = pos.x;
       if(pos.y - p.radius > 0 && pos.y + p.radius < pJS.canvas.h) p.y = pos.y;
     }else{
       p.x = pos.x;
       p.y = pos.y;
     }
   
   }

   else if(pJS.interactivity.events.onclick.enable && isInArray('repulse', pJS.interactivity.events.onclick.mode)) {

     if(!pJS.tmp.repulse_finish){
       pJS.tmp.repulse_count++;
       if(pJS.tmp.repulse_count == pJS.particles.array.length){
         pJS.tmp.repulse_finish = true;
       }
     }

     if(pJS.tmp.repulse_clicking){

       var repulseRadius = Math.pow(pJS.interactivity.modes.repulse.distance/6, 3);

       var dx = pJS.interactivity.mouse.click_pos_x - p.x,
           dy = pJS.interactivity.mouse.click_pos_y - p.y,
           d = dx*dx + dy*dy;

       var force = -repulseRadius / d * 1;

       function process(){

         var f = Math.atan2(dy,dx);
         p.vx = force * Math.cos(f);
         p.vy = force * Math.sin(f);

         if(pJS.particles.move.out_mode == 'bounce'){
           var pos = {
             x: p.x + p.vx,
             y: p.y + p.vy
           }
           if (pos.x + p.radius > pJS.canvas.w) p.vx = -p.vx;
           else if (pos.x - p.radius < 0) p.vx = -p.vx;
           if (pos.y + p.radius > pJS.canvas.h) p.vy = -p.vy;
           else if (pos.y - p.radius < 0) p.vy = -p.vy;
         }

       // default
       if(d <= repulseRadius){
         process();
       }

       // bang - slow motion mode
       // if(!pJS.tmp.repulse_finish){
       //   if(d <= repulseRadius){
       //     process();
       //   }
       // }else{
       //   process();
       // }

     }else{

       if(pJS.tmp.repulse_clicking == false){

         p.vx = p.vx_i;
         p.vy = p.vy_i;
       
       }

 pJS.fn.modes.grabParticle = function(p){

   if(pJS.interactivity.events.onhover.enable && pJS.interactivity.status == 'mousemove'){

     var dx_mouse = p.x - pJS.interactivity.mouse.pos_x,
         dy_mouse = p.y - pJS.interactivity.mouse.pos_y,
         dist_mouse = Math.sqrt(dx_mouse*dx_mouse + dy_mouse*dy_mouse);

     /* draw a line between the cursor and the particle if the distance between them is under the config distance */
     if(dist_mouse <= pJS.interactivity.modes.grab.distance){

       var opacity_line = pJS.interactivity.modes.grab.line_linked.opacity - (dist_mouse / (1/pJS.interactivity.modes.grab.line_linked.opacity)) / pJS.interactivity.modes.grab.distance;

       if(opacity_line > 0){

         /* style */
         var color_line = pJS.particles.line_linked.color_rgb_line;
         pJS.canvas.ctx.strokeStyle = 'rgba('+color_line.r+','+color_line.g+','+color_line.b+','+opacity_line+')';
         pJS.canvas.ctx.lineWidth = pJS.particles.line_linked.width;
         //pJS.canvas.ctx.lineCap = 'round'; /* performance issue */
         
         /* path */
         pJS.canvas.ctx.beginPath();
         pJS.canvas.ctx.moveTo(p.x, p.y);
         pJS.canvas.ctx.lineTo(pJS.interactivity.mouse.pos_x, pJS.interactivity.mouse.pos_y);
         pJS.canvas.ctx.stroke();
         pJS.canvas.ctx.closePath();

};

 /* ---------- pJS functions - vendors ------------ */

 pJS.fn.vendors.eventsListeners = function(){

   /* events target element */
   if(pJS.interactivity.detect_on == 'window'){
     pJS.interactivity.el = window;
   }else{
     pJS.interactivity.el = pJS.canvas.el;
   }

   /* detect mouse pos - on hover / click event */
   if(pJS.interactivity.events.onhover.enable || pJS.interactivity.events.onclick.enable){

     /* el on mousemove */
     pJS.interactivity.el.addEventListener('mousemove', function(e){

       if(pJS.interactivity.el == window){
         var pos_x = e.clientX,
             pos_y = e.clientY;
       }
       else{
         var pos_x = e.offsetX || e.clientX,
             pos_y = e.offsetY || e.clientY;
       }

       pJS.interactivity.mouse.pos_x = pos_x;
       pJS.interactivity.mouse.pos_y = pos_y;

       if(pJS.tmp.retina){
         pJS.interactivity.mouse.pos_x *= pJS.canvas.pxratio;
         pJS.interactivity.mouse.pos_y *= pJS.canvas.pxratio;
       }

       pJS.interactivity.status = 'mousemove';

});

     /* el on onmouseleave */
     pJS.interactivity.el.addEventListener('mouseleave', function(e){

       pJS.interactivity.mouse.pos_x = null;
       pJS.interactivity.mouse.pos_y = null;
       pJS.interactivity.status = 'mouseleave';

});

   /* on click event */
   if(pJS.interactivity.events.onclick.enable){

     pJS.interactivity.el.addEventListener('click', function(){

       pJS.interactivity.mouse.click_pos_x = pJS.interactivity.mouse.pos_x;
       pJS.interactivity.mouse.click_pos_y = pJS.interactivity.mouse.pos_y;
       pJS.interactivity.mouse.click_time = new Date().getTime();

       if(pJS.interactivity.events.onclick.enable){

         switch(pJS.interactivity.events.onclick.mode){

           case 'push':
             if(pJS.particles.move.enable){
               pJS.fn.modes.pushParticles(pJS.interactivity.modes.push.particles_nb, pJS.interactivity.mouse);
             }else{
               if(pJS.interactivity.modes.push.particles_nb == 1){
                 pJS.fn.modes.pushParticles(pJS.interactivity.modes.push.particles_nb, pJS.interactivity.mouse);
               }
               else if(pJS.interactivity.modes.push.particles_nb > 1){
                 pJS.fn.modes.pushParticles(pJS.interactivity.modes.push.particles_nb);
               }
             }
           break;

           case 'remove':
             pJS.fn.modes.removeParticles(pJS.interactivity.modes.remove.particles_nb);
           break;

           case 'bubble':
             pJS.tmp.bubble_clicking = true;
           break;

           case 'repulse':
             pJS.tmp.repulse_clicking = true;
             pJS.tmp.repulse_count = 0;
             pJS.tmp.repulse_finish = false;
             setTimeout(function(){
               pJS.tmp.repulse_clicking = false;
             }, pJS.interactivity.modes.repulse.duration*1000)
           break;

     });
       
   }

};

 pJS.fn.vendors.densityAutoParticles = function(){

   if(pJS.particles.number.density.enable){

     /* calc area */
     var area = pJS.canvas.el.width * pJS.canvas.el.height / 1000;
     if(pJS.tmp.retina){
       area = area/(pJS.canvas.pxratio*2);
     }

     /* calc number of particles based on density area */
     var nb_particles = area * pJS.particles.number.value / pJS.particles.number.density.value_area;

     /* add or remove X particles */
     var missing_particles = pJS.particles.array.length - nb_particles;
     if(missing_particles < 0) pJS.fn.modes.pushParticles(Math.abs(missing_particles));
     else pJS.fn.modes.removeParticles(missing_particles);

};

 pJS.fn.vendors.checkOverlap = function(p1, position){
   for(var i = 0; i < pJS.particles.array.length; i++){
     var p2 = pJS.particles.array[i];

     var dx = p1.x - p2.x,
         dy = p1.y - p2.y,
         dist = Math.sqrt(dx*dx + dy*dy);

     if(dist <= p1.radius + p2.radius){
       p1.x = position ? position.x : Math.random() * pJS.canvas.w;
       p1.y = position ? position.y : Math.random() * pJS.canvas.h;
       pJS.fn.vendors.checkOverlap(p1);
     }
   }
 };

 pJS.fn.vendors.createSvgImg = function(p){

   /* set color to svg element */
   var svgXml = pJS.tmp.source_svg,
       rgbHex = /#([0-9A-F]{3,6})/gi,
       coloredSvgXml = svgXml.replace(rgbHex, function (m, r, g, b) {
         if(p.color.rgb){
           var color_value = 'rgba('+p.color.rgb.r+','+p.color.rgb.g+','+p.color.rgb.b+','+p.opacity+')';
         }else{
           var color_value = 'hsla('+p.color.hsl.h+','+p.color.hsl.s+'%,'+p.color.hsl.l+'%,'+p.opacity+')';
         }
         return color_value;
       });

   /* prepare to create img with colored svg */
   var svg = new Blob([coloredSvgXml], {type: 'image/svg+xml;charset=utf-8'}),
       DOMURL = window.URL || window.webkitURL || window,
       url = DOMURL.createObjectURL(svg);

   /* create particle img obj */
   var img = new Image();
   img.addEventListener('load', function(){
     p.img.obj = img;
     p.img.loaded = true;
     DOMURL.revokeObjectURL(url);
     pJS.tmp.count_svg++;
   });
   img.src = url;

};

 pJS.fn.vendors.destroypJS = function(){
   cancelAnimationFrame(pJS.fn.drawAnimFrame);
   canvas_el.remove();
   pJSDom = null;
 };

 pJS.fn.vendors.drawShape = function(c, startX, startY, sideLength, sideCountNumerator, sideCountDenominator){

   // By Programming Thomas - https://programmingthomas.wordpress.com/2013/04/03/n-sided-shapes/
   var sideCount = sideCountNumerator * sideCountDenominator;
   var decimalSides = sideCountNumerator / sideCountDenominator;
   var interiorAngleDegrees = (180 * (decimalSides - 2)) / decimalSides;
   var interiorAngle = Math.PI - Math.PI * interiorAngleDegrees / 180; // convert to radians
   c.save();
   c.beginPath();
   c.translate(startX, startY);
   c.moveTo(0,0);
   for (var i = 0; i < sideCount; i++) {
     c.lineTo(sideLength,0);
     c.translate(sideLength,0);
     c.rotate(interiorAngle);
   }
   //c.stroke();
   c.fill();
   c.restore();

};

 pJS.fn.vendors.exportImg = function(){
   window.open(pJS.canvas.el.toDataURL('image/png'), '_blank');
 };

 pJS.fn.vendors.loadImg = function(type){

   pJS.tmp.img_error = undefined;

   if(pJS.particles.shape.image.src != ){

     if(type == 'svg'){

       var xhr = new XMLHttpRequest();
       xhr.open('GET', pJS.particles.shape.image.src);
       xhr.onreadystatechange = function (data) {
         if(xhr.readyState == 4){
           if(xhr.status == 200){
             pJS.tmp.source_svg = data.currentTarget.response;
             pJS.fn.vendors.checkBeforeDraw();
           }else{
             console.log('Error pJS - Image not found');
             pJS.tmp.img_error = true;
           }
         }
       }
       xhr.send();

     }else{

       var img = new Image();
       img.addEventListener('load', function(){
         pJS.tmp.img_obj = img;
         pJS.fn.vendors.checkBeforeDraw();
       });
       img.src = pJS.particles.shape.image.src;

   }else{
     console.log('Error pJS - No image.src');
     pJS.tmp.img_error = true;
   }

};

 pJS.fn.vendors.draw = function(){

   if(pJS.particles.shape.type == 'image'){

     if(pJS.tmp.img_type == 'svg'){

       if(pJS.tmp.count_svg >= pJS.particles.number.value){
         pJS.fn.particlesDraw();
         if(!pJS.particles.move.enable) cancelRequestAnimFrame(pJS.fn.drawAnimFrame);
         else pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
       }else{
         //console.log('still loading...');
         if(!pJS.tmp.img_error) pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
       }

     }else{

       if(pJS.tmp.img_obj != undefined){
         pJS.fn.particlesDraw();
         if(!pJS.particles.move.enable) cancelRequestAnimFrame(pJS.fn.drawAnimFrame);
         else pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
       }else{
         if(!pJS.tmp.img_error) pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
       }

   }else{
     pJS.fn.particlesDraw();
     if(!pJS.particles.move.enable) cancelRequestAnimFrame(pJS.fn.drawAnimFrame);
     else pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
   }

};

 pJS.fn.vendors.checkBeforeDraw = function(){

   // if shape is image
   if(pJS.particles.shape.type == 'image'){

     if(pJS.tmp.img_type == 'svg' && pJS.tmp.source_svg == undefined){
       pJS.tmp.checkAnimFrame = requestAnimFrame(check);
     }else{
       //console.log('images loaded! cancel check');
       cancelRequestAnimFrame(pJS.tmp.checkAnimFrame);
       if(!pJS.tmp.img_error){
         pJS.fn.vendors.init();
         pJS.fn.vendors.draw();
       }
       
     }

   }else{
     pJS.fn.vendors.init();
     pJS.fn.vendors.draw();
   }

};

 pJS.fn.vendors.init = function(){

   /* init canvas + particles */
   pJS.fn.retinaInit();
   pJS.fn.canvasInit();
   pJS.fn.canvasSize();
   pJS.fn.canvasPaint();
   pJS.fn.particlesCreate();
   pJS.fn.vendors.densityAutoParticles();

   /* particles.line_linked - convert hex colors to rgb */
   pJS.particles.line_linked.color_rgb_line = hexToRgb(pJS.particles.line_linked.color);

};

 pJS.fn.vendors.start = function(){

   if(isInArray('image', pJS.particles.shape.type)){
     pJS.tmp.img_type = pJS.particles.shape.image.src.substr(pJS.particles.shape.image.src.length - 3);
     pJS.fn.vendors.loadImg(pJS.tmp.img_type);
   }else{
     pJS.fn.vendors.checkBeforeDraw();
   }

};

 /* ---------- pJS - start ------------ */

 pJS.fn.vendors.eventsListeners();

 pJS.fn.vendors.start();

};

/* ---------- global functions - vendors ------------ */

Object.deepExtend = function(destination, source) {

 for (var property in source) {
   if (source[property] && source[property].constructor &&
    source[property].constructor === Object) {
     destination[property] = destination[property] || {};
     arguments.callee(destination[property], source[property]);
   } else {
     destination[property] = source[property];
   }
 }
 return destination;

};

window.requestAnimFrame = (function(){

 return  window.requestAnimationFrame ||
   window.webkitRequestAnimationFrame ||
   window.mozRequestAnimationFrame    ||
   window.oRequestAnimationFrame      ||
   window.msRequestAnimationFrame     ||
   function(callback){
     window.setTimeout(callback, 1000 / 60);
   };

})();

window.cancelRequestAnimFrame = ( function() {

 return window.cancelAnimationFrame         ||
   window.webkitCancelRequestAnimationFrame ||
   window.mozCancelRequestAnimationFrame    ||
   window.oCancelRequestAnimationFrame      ||
   window.msCancelRequestAnimationFrame     ||
   clearTimeout

} )();

function hexToRgb(hex){

 // By Tim Down - http://stackoverflow.com/a/5624139/3493650
 // Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
 var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
 hex = hex.replace(shorthandRegex, function(m, r, g, b) {
    return r + r + g + g + b + b;
 });
 var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
 return result ? {
     r: parseInt(result[1], 16),
     g: parseInt(result[2], 16),
     b: parseInt(result[3], 16)
 } : null;

};

function clamp(number, min, max) {

 return Math.min(Math.max(number, min), max);

};

function isInArray(value, array) {

 return array.indexOf(value) > -1;

}

/* ---------- particles.js functions - start ------------ */

window.pJSDom = [];

window.particlesJS = function(tag_id, params){

 //console.log(params);

 /* no string id? so it's object params, and set the id with default id */
 if(typeof(tag_id) != 'string'){
   params = tag_id;
   tag_id = 'particles-js';
 }

 /* no id? set the id to default id */
 if(!tag_id){
   tag_id = 'particles-js';
 }

 /* pJS elements */
 var pJS_tag = document.getElementById(tag_id),
     pJS_canvas_class = 'particles-js-canvas-el',
     exist_canvas = pJS_tag.getElementsByClassName(pJS_canvas_class);

 /* remove canvas if exists into the pJS target tag */
 if(exist_canvas.length){
   while(exist_canvas.length > 0){
     pJS_tag.removeChild(exist_canvas[0]);
   }
 }

 /* create canvas element */
 var canvas_el = document.createElement('canvas');
 canvas_el.className = pJS_canvas_class;

 /* set size canvas */
 canvas_el.style.width = "100%";
 canvas_el.style.height = "100%";

 /* append canvas */
 var canvas = document.getElementById(tag_id).appendChild(canvas_el);

 /* launch particle.js */
 if(canvas != null){
   pJSDom.push(new pJS(tag_id, params));
 }

};

window.particlesJS.load = function(tag_id, path_config_json, callback){

 /* load json config */
 var xhr = new XMLHttpRequest();
 xhr.open('GET', path_config_json);
 xhr.onreadystatechange = function (data) {
   if(xhr.readyState == 4){
     if(xhr.status == 200){
       var params = JSON.parse(data.currentTarget.response);
       window.particlesJS(tag_id, params);
       if(callback) callback();
     }else{
       console.log('Error pJS - XMLHttpRequest status: '+xhr.status);
       console.log('Error pJS - File config not found');
     }
   }
 };
 xhr.send();

}; </script>

@@ Line 1: / Line 1: @@
+<script>
 /* -----------------------------------------------
 /* Author : Vincent Garreau  - vincentgarreau.com
@@ Line 1,540: / Line 1,541: @@
 };
+</script>