Created
March 3, 2017 02:57
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| var particles = []; | |
| function setup() { | |
| createCanvas(1000, 600); | |
| background(0); | |
| for (var i = 0; i < 80; i++) { | |
| particles.push(new Particle(width / 2, height / 2)); | |
| } | |
| } | |
| function draw() { | |
| background(0, 10); | |
| //ellipse(width/2,height/2,30,30); | |
| for (var i = 0; i < particles.length; i++) { | |
| particles[i].upload(); | |
| particles[i].dissolve(); | |
| particles[i].display(); | |
| } | |
| if (keyIsPressed) { | |
| for (var i = 0; i < 10; i++) { | |
| particles.push(new Particle(mouseX,0)); | |
| particles[i].blow(); | |
| } | |
| } | |
| } | |
| // | |
| "use strict" | |
| class Particle { | |
| constructor(x, y) { | |
| this.pos = createVector(x, y); | |
| this.vel = createVector(0, 0); | |
| this.acc = createVector(0, 0); | |
| this.windVec = createVector(random(-1, 1), random(-1, 1)); | |
| this.velAdj = random(0.1, 0.98); | |
| this.accAdj = random(0.01, 0.98); | |
| this.diaX = random(5); | |
| this.diaY = random(5); | |
| this.g = random(255); | |
| this.b = random(255); | |
| this.a = random(220, 255); | |
| } | |
| blow() { | |
| this.windVec.mult(300); | |
| this.pos.add(this.windVec); | |
| } | |
| upload() { | |
| var mouseVec = createVector(mouseX, mouseY); | |
| this.acc = p5.Vector.sub(mouseVec, this.pos); | |
| this.acc.mult(this.accAdj); | |
| this.vel.add(this.acc); | |
| this.vel.mult(this.velAdj); | |
| this.pos.add(this.vel); | |
| } | |
| dissolve() { | |
| if (mouseIsPressed) { | |
| var autoVec = createVector(random(-width, width), random(-height, height)); | |
| this.acc = p5.Vector.sub(autoVec, this.pos); | |
| this.acc.mult(this.accAdj); | |
| this.vel.add(this.acc); | |
| this.vel.mult(this.velAdj); | |
| this.pos.add(this.vel); | |
| this.g--; | |
| this.b--; | |
| } | |
| } | |
| display() { | |
| push(); | |
| translate(this.pos.x, this.pos.y); | |
| noStroke(0); | |
| fill(0, this.g, this.b, this.a); | |
| rotate(0.3 * PI); | |
| ellipse(0, 0, this.diaX, this.diaY); | |
| pop(); | |
| } | |
| } | |
| // | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>assignment3</title> | |
| <script src="libraries/p5.js" type="text/javascript"></script> | |
| <script src="libraries/p5.dom.js" type="text/javascript"></script> | |
| <script src="libraries/p5.sound.js" type="text/javascript"></script> | |
| <script src="Particle.js" type="text/javascript"></script> | |
| <script src="sketch.js" type="text/javascript"></script> | |
| <style> | |
| body { | |
| padding: 0; | |
| margin: 0; | |
| } | |
| canvas { | |
| vertical-align: top; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| </body> | |
| </html> |
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