Рассеивающиеся шестиугольники
Рассеивающиеся шестиугольники по канвасу на jаvascriptHTML
<div id="jsi-hex-container" class="container"></div>CSS
html, body{
width: 100%;
height: 100%;
margin: 0;
padding: 0;
overflow: hidden;
}
.container{
width: 100%;
height: 100%;
margin: 0;
padding: 0;
background-color: #000000;
}JS
https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.jsvar RENDERER = {
RESIZE_INTERVAL : 30,
RADIUS : 25,
RATE : 0.98,
init : function(){
this.setParameters();
this.setup();
this.reconstructMethods();
this.bindEvent();
this.render();
},
setParameters : function(){
this.$window = $(window);
this.$container = $('#jsi-hex-container');
this.$canvas = $('<canvas />');
this.context = this.$canvas.appendTo(this.$container).get(0).getContext('2d');
this.hexagons = [];
this.resizeIds = [];
},
setup : function(){
this.hexagons.length = 0;
this.resizeIds.length = 0;
this.width = this.$container.width();
this.height = this.$container.height();
this.$canvas.attr({width : this.width, height : this.height});
this.createHexagons();
},
getRandomValue : function(min, max){
return min + (max - min) * Math.random() | 0;
},
createHexagons : function(){
this.radius = this.RADIUS * this.RATE;
this.vertices = [];
for(var i = 0; i < 6; i++){
this.vertices.push({x : this.radius * Math.sin(Math.PI / 3 * i), y : -this.radius * Math.cos(Math.PI / 3 * i)});
}
this.vertices.push(this.vertices[0]);
this.hexWidth = this.RADIUS * Math.cos(Math.PI / 6) * 2;
this.hexHeight = this.RADIUS * (2 - Math.sin(Math.PI / 6));
var countX = Math.ceil(this.width / this.hexWidth) + 1,
countY = Math.ceil(this.height / this.hexHeight) + 1,
offsetX = -(countX * this.hexWidth - this.width) / 2,
offsetY = -(countY * this.hexHeight - this.height) / 2;
countX++;
for(var y = 0; y < countY; y++){
for(var x = 0; x < countX; x++){
this.hexagons.push(new HEXAGON(this, offsetX + (x + 0.5) * this.hexWidth - (y % 2 == 1 ? 0 : this.hexWidth / 2), offsetY + (y + 0.5) * this.hexHeight));
}
}
for(var y = 0; y < countY; y++){
for(var x = 0; x < countX; x++){
var hexagon = this.hexagons[y * countX + x];
if(x < countX - 1){
hexagon.neighbors[0] = this.hexagons[y * countX + x + 1];
}
if((x < countX - 1 || y % 2 == 0) && y < countY - 1){
hexagon.neighbors[1] = this.hexagons[(y + 1) * countX + x + (y % 2 == 1 ? 1 : 0)];
}
if((x > 0 || y % 2 == 1) && y < countY - 1){
hexagon.neighbors[2] = this.hexagons[(y + 1) * countX + x + (y % 2 == 1 ? 0 : -1)];
}
if(x > 0){
hexagon.neighbors[3] = this.hexagons[y * countX + x - 1];
}
if((x > 0 || y % 2 == 1) && y > 0){
hexagon.neighbors[4] = this.hexagons[(y - 1) * countX + x + (y % 2 == 1 ? 0 : -1)];
}
if((x < countX - 1 || y % 2 == 0) && y > 0){
hexagon.neighbors[5] = this.hexagons[(y - 1) * countX + x + (y % 2 == 1 ? 1 : 0)];
}
}
}
this.hexagons[this.getRandomValue(0, this.hexagons.length - 1)].select();
},
watchWindowSize : function(){
while(this.resizeIds.length > 0){
clearTimeout(this.resizeIds.pop());
}
this.tmpWidth = this.$window.width();
this.tmpHeight = this.$window.height();
this.resizeIds.push(setTimeout(this.jdugeToStopResize, this.RESIZE_INTERVAL));
},
jdugeToStopResize : function(){
var width = this.$window.width(),
height = this.$window.height(),
stopped = (width == this.tmpWidth && height == this.tmpHeight);
this.tmpWidth = width;
this.tmpHeight = height;
if(stopped){
this.setup();
}
},
reconstructMethods : function(){
this.selectHexagon = this.selectHexagon.bind(this);
this.watchWindowSize = this.watchWindowSize.bind(this);
this.jdugeToStopResize = this.jdugeToStopResize.bind(this);
this.render = this.render.bind(this);
},
selectHexagon : function(event){
var axis = this.getAxis(event);
for(var i = 0, count = this.hexagons.length; i < count; i++){
this.hexagons[i].judge(axis.x, axis.y);
}
},
getAxis : function(event){
var offset = this.$container.offset();
return {x : event.clientX - offset.left + this.$window.scrollLeft(), y : event.clientY - offset.top + this.$window.scrollTop()};
},
bindEvent : function(){
this.$window.on('resize', this.watchWindowSize);
this.$container.on('click', this.selectHexagon);
},
render : function(){
requestAnimationFrame(this.render);
this.context.fillStyle = 'hsla(210, 70%, 10%, 0.3)';
this.context.fillRect(0, 0, this.width, this.height);
for(var i = 0, count = this.hexagons.length; i < count; i++){
this.hexagons[i].render(this.context);
}
}
};
var HEXAGON = function(renderer, x, y){
this.renderer = renderer;
this.x = x;
this.y = y;
this.init();
};
HEXAGON.prototype = {
COUNT : {MIN : 5, MAX : 50},
LUMINANCE : {MIN : 10, MAX : 70},
init : function(){
this.selections = [];
this.neighbors = new Array(6);
this.sourceIndices = [];
},
judge : function(x, y){
if(x < this.x - this.renderer.hexWidth / 2 || x > this.x + this.renderer.hexWidth / 2
|| y < this.y - this.renderer.RADIUS || y > this.y + this.renderer.RADIUS
|| y < this.y && Math.abs((x - this.x) / (y - this.y + this.renderer.RADIUS)) > Math.tan(Math.PI / 3)
|| y > this.y && Math.abs((x - this.x) / (y - this.y - this.renderer.RADIUS)) > Math.tan(Math.PI / 3)){
return;
}
this.select();
},
select : function(){
this.hue = this.renderer.getRandomValue(100, 300);
this.selections.push({count : 0, hue : this.hue});
},
relate : function(sourceIndices){
this.sourceIndices.push(sourceIndices);
},
draw : function(context, targets){
for(var i = 0; i < targets.length; i++){
var target = targets[i],
fillLuminance = 0,
strokeLuminance = 0;
if(target.count < this.COUNT.MIN){
fillLuminance = this.LUMINANCE.MIN + (this.LUMINANCE.MAX - this.LUMINANCE.MIN) * Math.pow(Math.sin(Math.PI / 2 * target.count / this.COUNT.MIN), 3);
}else if(target.count < this.COUNT.MAX){
fillLuminance = this.LUMINANCE.MIN + (this.LUMINANCE.MAX - this.LUMINANCE.MIN) * Math.pow(Math.sin(Math.PI / 2 * (1 + (target.count - this.COUNT.MIN) / (this.COUNT.MAX - this.COUNT.MIN))), 3);
}
if(target.count < this.COUNT.MIN * 2){
strokeLuminance = this.LUMINANCE.MIN + (this.LUMINANCE.MAX - this.LUMINANCE.MIN) * 2 * Math.sin(Math.PI / 2 * target.count / this.COUNT.MIN / 2);
}else if(target.count < this.COUNT.MAX * 2){
strokeLuminance = this.LUMINANCE.MIN + (this.LUMINANCE.MAX - this.LUMINANCE.MIN) * 2 * Math.sin(Math.PI / 2 * (1 + (target.count - this.COUNT.MIN * 2) / (this.COUNT.MAX - this.COUNT.MIN) / 2));
}
context.fillStyle = 'hsla(' + target.hue + ', 70%, ' + fillLuminance + '%, 0.3)';
context.fill();
context.strokeStyle = 'hsla(' + target.hue + ', 70%, ' + strokeLuminance + '%, 0.3)';
context.stroke();
}
},
render : function(context){
context.save();
context.globalCompositeOperation = 'lighter';
context.translate(this.x, this.y);
context.beginPath();
for(var i = 0, vertices = this.renderer.vertices; i < 6; i++){
context[i == 0 ? 'moveTo' : 'lineTo'](vertices[i].x, vertices[i].y);
}
context.closePath();
context.fillStyle = 'hsla(210, 70%, ' + this.LUMINANCE.MIN + '%, 0.3)';
context.fill();
this.draw(context, this.selections);
this.draw(context, this.sourceIndices);
context.restore();
for(var i = this.selections.length - 1; i >= 0; i--){
var selection = this.selections[i];
if(selection.count == this.COUNT.MIN){
for(var j = 0; j < 6; j++){
if(this.neighbors[j]){
var indices = [];
for(var k = 0; k < 3; k++){
var index = j - 1 + k;
index += 6;
index %= 6;
indices.push(index);
}
this.neighbors[j].relate({indices : indices, hue : this.hue, count : 0});
}
}
}
if(++selection.count == this.COUNT.MAX * 2){
this.selections.splice(i, 1);
}
}
for(var i = this.sourceIndices.length - 1; i >= 0; i--){
var indices = this.sourceIndices[i],
index = indices.indices[this.renderer.getRandomValue(0, 3)];
if(this.neighbors[index] && indices.count == this.COUNT.MIN){
this.neighbors[index].relate({indices : indices.indices, hue : indices.hue, count : 0});
}
if(++indices.count == this.COUNT.MAX * 2){
this.sourceIndices.splice(i, 1);
}
}
}
};
$(function(){
RENDERER.init();
});
