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| /* ----------------------------------------------- | |
| /* Author : Vincent Garreau - vincentgarreau.com | |
| /* MIT license: http://opensource.org/licenses/MIT | |
| /* Demo / Generator : vincentgarreau.com/particles.js | |
| /* GitHub : github.com/VincentGarreau/particles.js | |
| /* How to use? : Check the GitHub README | |
| /* v2.0.0 | |
| /* ----------------------------------------------- */ | |
| 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(); | |
| }; |