js实现等高图线条效果代码-html代码-BFW代码库

js实现等高图线条效果代码

代码语言：html

所属分类：其他

代码描述：js实现等高图线条效果代码

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>
body {
  padding: 20px;
  background: #fbf5e7;
  text-align: center;
  font-family: Helvetica, Arial, sans-serif;
}

canvas,
svg {
  width: 100% !important;
  max-width: 1000px !important;
  height: auto !important;
  position: relative;
  margin: 10px auto 0;
  display: block;
}
</style>

  
</head>

<body>
  <div>Noise seed: <span class="seed"></span></div>

<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/p5.0.10.2.js"></script>
      <script>
// Inspired by 
// https://i.redd.it/pij77ougdwr01.png
// https://www.reddit.com/r/generative/comments/8c8g9k/generative_design_for_a_handpainted_mural/

const rows = 120;
const columns = 120;
const step = 6;
const velocity = step;
const w = columns * step;
const h = rows * step;
const maxLength = 16;
const dotStep = 2.1;

const vectors = [];
const colorNoise = [];
const dots = [];
const seed = Math.floor(Math.random() * 10000);

document.querySelector('.seed').innerHTML = seed;


// const blue = '#4b5575';
// const green = '#5c9191';
// const orange = '#d6907d';
// const yellow = '#efdba6';
const blue = { r: 75, g: 85, b: 117 };
const green = { r: 105, g: 153, b: 152 };
const orange = { r: 214, g: 144, b: 125 };
const yellow = { r: 239, g: 219, b: 166 };
const colors = [blue, green, orange, yellow];

function pickColorFromGradient(color1, color2, weight) {
  const w1 = weight;
  const w2 = 1 - w1;
  const rgb = [Math.round(color1.r * w1 + color2.r * w2),
    Math.round(color1.r * w1 + color2.r * w2),
    Math.round(color1.b * w1 + color2.b * w2)];
  return rgb;
}


function setup() {
  createCanvas(w, h);
  background('#fbf5e7');
  frameRate(15);
  
  noiseSeed(seed);
  
  for (let i = 0; i <= rows; i++) {
    vectors[i] = [];
    for (let j = 0; j <= columns; j++) {
      const x = i * step;
      const y = j * step;
      const n = noise(i / 70, j / 70);
      const a = n * 2 * PI;
      
      const directionVector = { x: 0, y: 0 };
      
      // directionVector.y = sin(x / w * PI) * 3;
      
      const vectorX = cos(a) * velocity + directionVector.x;
      const vectorY = sin(a) * velocity + directionVector.y;
      
      const endX = x + vectorX;
      const endY = y + vectorY;
      // stroke(n * 200);
      vectors[i][j] = {
        startX: x,
        startY: y,
        endX,
        endY,
        angle: a,
        vectorX,
        vectorY,
      };
    }
  }
    
  for (let i = 0; i <= rows; i = i + dotStep) {
    for (let j = 0; j <= columns; j = j + dotStep) {      
      const x = i * step + Math.floor(Math.random() * step) - (step / 2);
      const y = j * step + Math.floor(Math.random() * step) - (step / 2);
 .........完整代码请登录后点击上方下载按钮下载查看