p5实现canvas绘制花朵效果代码-html代码-BFW代码库

p5实现canvas绘制花朵效果代码

代码语言：html

代码描述：p5实现canvas绘制花朵效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开


<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">
  

  
  
  
<style>
* {
      padding: 0;
      margin: 0;
    }

body {
  display: flex;
  flex-direction: column;
  background-color: #00000c;
  align-items: center;
  justify-content: center;
}

p {
  color: #eee;
  margin: 4px;
  font-size: 1.5rem;
  font-family: helvetica, sans-serif;
}

canvas {
  display: block;
}
</style>


</head>

<body>
  <p>Click on canvas to regenerate</p>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/p5.js"></script>
      <script >

// source code: https://github.com/moPsych/flowers-00


let c, cn;
let t, s, bd;
let regenerate = true;
let ellipseList = [];
let pts = [];
let palette = ["#00ffaa", "#ff006f", "#ff9d00", "#ffa3fd", "#f2f794", "#d9c0fa"];
// let palette = ["#FF0052", "#00FF79", "#0096FF", "#FF8700", "#C400FF", "#FFE200", "#ffffff"];

// number of flower curves
let n = 30;
// number of background elements
let nBg = 30;
// basic stroke weight
let baseSW = 3;
// stroke weight decrease per length
let dSF = 0.01;

function setup() {
  c = createCanvas(windowHeight, windowHeight);
  // c = createCanvas(1500, 1500);
}

function draw() {
  if (regenerate) {
    calcParameters();
    pointsData();
    drawBackground(nBg);
    drawCurves();
    drawPetals();
    regenerate = false;
  }
}

function calcParameters() {
  // parameters calculated according to canvas size
  bd = height / 20;
  t = random(0, PI);
  s = random(0, PI);
}

function pointsData() {
  // calculates the points used to generate the curves
  pts = [];
  for (let i = 0; i < n; i++) {
    p = {
      l: createVector(round(random(0.2 * width, 0.8 * width)), height + 10),
      pl: createVector(),
      t: random(0.005),
      s: random(0.02),
      len: round(random(height * 0.4, height * 0.6)),
      strk: round(random(50, 100))
    };
    pts.push(p);
  }
}

function drawBackground(n) {
  //draws the background elements
  background("#e0f5ff");
  // background(0, 0, 10);
  for (let k = 0; k < n; k++) {
    let num = ceil(random(5));
    let bLst = [];
    let bx = random(0.1 * width, 0.9 * width);
    let by = random(0.1 * height, 0.9 * height);
    bLst.push(createVector(bx, by));
    for (let i = 0; i < num; i++) {
      let nbx = bx + random(-bd, bd);
      let nby = by + random(-bd, bd);
      bLst.push(createVector(nbx, nby));
    }
    let col = palette[floor(random(palette.length))];
    fill(red(col), green(col), blue(col), random(20, 40));
    stroke(red(col), green(col), blue(col), random(40, 60));
    // the below function I created to generate bezier curves from a list of points
    drawBezierOpen(bLst);
  }
}

function drawCurves() {
  // flower curves are calculated as a function of sin and cosine
  ellipseList =.........完整代码请登录后点击上方下载按钮下载查看