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particles.js
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particles.js
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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) {