1 | import { Particle } from "./Particle";
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2 | import { NumberUtils, Point, QuadTree, Rectangle, Utils } from "../Utils";
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3 | import { InteractionManager } from "./Particle/InteractionManager";
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4 | import { ParticlesOptions } from "../Options/Classes/Particles/ParticlesOptions";
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5 | export class Particles {
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6 | constructor(container) {
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7 | this.container = container;
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8 | this.nextId = 0;
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9 | this.array = [];
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10 | this.limit = 0;
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11 | this.linksFreq = new Map();
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12 | this.trianglesFreq = new Map();
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13 | this.interactionManager = new InteractionManager(container);
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14 | const canvasSize = this.container.canvas.size;
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15 | this.linksColors = new Map();
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16 | this.quadTree = new QuadTree(new Rectangle(-canvasSize.width / 4, -canvasSize.height / 4, (canvasSize.width * 3) / 2, (canvasSize.height * 3) / 2), 4);
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17 | }
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18 | get count() {
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19 | return this.array.length;
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20 | }
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21 | init() {
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22 | const container = this.container;
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23 | const options = container.actualOptions;
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24 | this.linksFreq = new Map();
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25 | this.trianglesFreq = new Map();
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26 | let handled = false;
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27 | for (const particle of options.manualParticles) {
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28 | const pos = particle.position
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29 | ? {
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30 | x: (particle.position.x * container.canvas.size.width) / 100,
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31 | y: (particle.position.y * container.canvas.size.height) / 100,
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32 | }
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33 | : undefined;
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34 | this.addParticle(pos, particle.options);
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35 | }
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36 | for (const [, plugin] of container.plugins) {
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37 | if (plugin.particlesInitialization !== undefined) {
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38 | handled = plugin.particlesInitialization();
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39 | }
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40 | if (handled) {
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41 | break;
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42 | }
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43 | }
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44 | if (!handled) {
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45 | for (let i = this.count; i < options.particles.number.value; i++) {
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46 | this.addParticle();
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47 | }
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48 | }
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49 | if (options.infection.enable) {
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50 | for (let i = 0; i < options.infection.infections; i++) {
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51 | const notInfected = this.array.filter((p) => p.infecter.infectionStage === undefined);
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52 | const infected = Utils.itemFromArray(notInfected);
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53 | infected.infecter.startInfection(0);
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54 | }
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55 | }
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56 | this.interactionManager.init();
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57 | container.pathGenerator.init();
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58 | }
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59 | redraw() {
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60 | this.clear();
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61 | this.init();
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62 | this.draw({ value: 0, factor: 0 });
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63 | }
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64 | removeAt(index, quantity, override) {
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65 | if (index >= 0 && index <= this.count) {
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66 | for (const particle of this.array.splice(index, quantity !== null && quantity !== void 0 ? quantity : 1)) {
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67 | particle.destroy(override);
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68 | }
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69 | }
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70 | }
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71 | remove(particle, override) {
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72 | this.removeAt(this.array.indexOf(particle), undefined, override);
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73 | }
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74 | update(delta) {
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75 | const container = this.container;
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76 | const particlesToDelete = [];
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77 | container.pathGenerator.update();
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78 | for (const [, plugin] of container.plugins) {
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79 | if (plugin.update !== undefined) {
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80 | plugin.update(delta);
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81 | }
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82 | }
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83 | for (const particle of this.array) {
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84 | const resizeFactor = this.container.canvas.resizeFactor;
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85 | if (resizeFactor) {
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86 | particle.position.x *= resizeFactor.width;
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87 | particle.position.y *= resizeFactor.height;
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88 | }
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89 | particle.move(delta);
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90 | if (particle.destroyed) {
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91 | particlesToDelete.push(particle);
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92 | continue;
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93 | }
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94 | this.quadTree.insert(new Point(particle.getPosition(), particle));
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95 | }
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96 | for (const particle of particlesToDelete) {
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97 | this.remove(particle);
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98 | }
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99 | this.interactionManager.externalInteract(delta);
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100 | for (const particle of this.container.particles.array) {
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101 | particle.update(delta);
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102 | if (!particle.destroyed && !particle.spawning) {
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103 | this.interactionManager.particlesInteract(particle, delta);
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104 | }
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105 | }
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106 | delete container.canvas.resizeFactor;
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107 | }
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108 | draw(delta) {
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109 | const container = this.container;
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110 | container.canvas.clear();
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111 | const canvasSize = this.container.canvas.size;
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112 | this.quadTree = new QuadTree(new Rectangle(-canvasSize.width / 4, -canvasSize.height / 4, (canvasSize.width * 3) / 2, (canvasSize.height * 3) / 2), 4);
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113 | this.update(delta);
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114 | for (const [, plugin] of container.plugins) {
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115 | container.canvas.drawPlugin(plugin, delta);
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116 | }
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117 | for (const p of this.array) {
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118 | p.draw(delta);
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119 | }
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120 | }
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121 | clear() {
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122 | this.array = [];
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123 | }
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124 | push(nb, mouse, overrideOptions) {
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125 | const container = this.container;
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126 | const options = container.actualOptions;
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127 | const limit = options.particles.number.limit * container.density;
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128 | this.pushing = true;
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129 | if (limit > 0) {
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130 | const countToRemove = this.count + nb - limit;
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131 | if (countToRemove > 0) {
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132 | this.removeQuantity(countToRemove);
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133 | }
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134 | }
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135 | for (let i = 0; i < nb; i++) {
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136 | this.addParticle(mouse === null || mouse === void 0 ? void 0 : mouse.position, overrideOptions);
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137 | }
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138 | this.pushing = false;
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139 | }
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140 | addParticle(position, overrideOptions) {
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141 | return this.pushParticle(position, overrideOptions);
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142 | }
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143 | addSplitParticle(parent) {
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144 | const splitOptions = parent.options.destroy.split;
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145 | const options = new ParticlesOptions();
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146 | options.load(parent.options);
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147 | const factor = NumberUtils.getRangeValue(splitOptions.factor.value);
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148 | options.color.load({
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149 | value: {
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150 | hsl: parent.getFillColor(),
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151 | },
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152 | });
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153 | if (typeof options.size.value === "number") {
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154 | options.size.value /= factor;
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155 | }
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156 | else {
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157 | options.size.value.min /= factor;
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158 | options.size.value.max /= factor;
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159 | }
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160 | options.load(splitOptions.particles);
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161 | const offset = NumberUtils.setRangeValue(-parent.size.value, parent.size.value);
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162 | const position = {
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163 | x: parent.position.x + NumberUtils.randomInRange(offset),
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164 | y: parent.position.y + NumberUtils.randomInRange(offset),
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165 | };
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166 | return this.pushParticle(position, options, (particle) => {
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167 | if (particle.size.value < 0.5) {
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168 | return false;
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169 | }
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170 | particle.velocity.length = NumberUtils.randomInRange(NumberUtils.setRangeValue(parent.velocity.length, particle.velocity.length));
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171 | particle.splitCount = parent.splitCount + 1;
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172 | particle.unbreakable = true;
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173 | setTimeout(() => {
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174 | particle.unbreakable = false;
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175 | }, 500);
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176 | return true;
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177 | });
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178 | }
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179 | removeQuantity(quantity) {
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180 | this.removeAt(0, quantity);
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181 | }
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182 | getLinkFrequency(p1, p2) {
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183 | const key = `${Math.min(p1.id, p2.id)}_${Math.max(p1.id, p2.id)}`;
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184 | let res = this.linksFreq.get(key);
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185 | if (res === undefined) {
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186 | res = Math.random();
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187 | this.linksFreq.set(key, res);
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188 | }
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189 | return res;
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190 | }
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191 | getTriangleFrequency(p1, p2, p3) {
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192 | let [id1, id2, id3] = [p1.id, p2.id, p3.id];
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193 | if (id1 > id2) {
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194 | [id2, id1] = [id1, id2];
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195 | }
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196 | if (id2 > id3) {
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197 | [id3, id2] = [id2, id3];
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198 | }
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199 | if (id1 > id3) {
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200 | [id3, id1] = [id1, id3];
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201 | }
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202 | const key = `${id1}_${id2}_${id3}`;
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203 | let res = this.trianglesFreq.get(key);
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204 | if (res === undefined) {
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205 | res = Math.random();
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206 | this.trianglesFreq.set(key, res);
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207 | }
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208 | return res;
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209 | }
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210 | setDensity() {
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211 | const options = this.container.actualOptions;
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212 | this.applyDensity(options.particles);
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213 | }
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214 | applyDensity(options) {
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215 | var _a;
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216 | if (!((_a = options.number.density) === null || _a === void 0 ? void 0 : _a.enable)) {
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217 | return;
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218 | }
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219 | const numberOptions = options.number;
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220 | const densityFactor = this.initDensityFactor(numberOptions.density);
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221 | const optParticlesNumber = numberOptions.value;
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222 | const optParticlesLimit = numberOptions.limit > 0 ? numberOptions.limit : optParticlesNumber;
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223 | const particlesNumber = Math.min(optParticlesNumber, optParticlesLimit) * densityFactor;
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224 | const particlesCount = this.count;
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225 | this.limit = numberOptions.limit * densityFactor;
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226 | if (particlesCount < particlesNumber) {
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227 | this.push(Math.abs(particlesNumber - particlesCount), undefined, options);
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228 | }
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229 | else if (particlesCount > particlesNumber) {
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230 | this.removeQuantity(particlesCount - particlesNumber);
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231 | }
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232 | }
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233 | initDensityFactor(densityOptions) {
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234 | const container = this.container;
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235 | if (!container.canvas.element || !densityOptions.enable) {
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236 | return 1;
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237 | }
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238 | const canvas = container.canvas.element;
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239 | const pxRatio = container.retina.pixelRatio;
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240 | return (canvas.width * canvas.height) / (densityOptions.factor * pxRatio * pxRatio * densityOptions.area);
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241 | }
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242 | pushParticle(position, overrideOptions, initializer) {
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243 | try {
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244 | const particle = new Particle(this.nextId, this.container, position, overrideOptions);
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245 | let canAdd = true;
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246 | if (initializer) {
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247 | canAdd = initializer(particle);
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248 | }
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249 | if (!canAdd) {
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250 | return;
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251 | }
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252 | this.array.push(particle);
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253 | this.nextId++;
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254 | return particle;
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255 | }
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256 | catch (e) {
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257 | console.warn(`error adding particle: ${e}`);
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258 | return;
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259 | }
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260 | }
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261 | }
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