a bed of 100 flowers (2025)

// make source code public

// schien@mail.ncku.edu.tw, Spring 2025

//

// a noisy spiral

// program for lectures on "The Wrong Way to Draw a Circle"

// schien@mail.ncku.edu.tw

// Fall 2018

// revised to create a bed of 100 flowers

// 20181125

//

// adjusting from var scoping to let scoping

// schien@mail.ncku.edu.tw, Spring 2023

//

​

let bg; //background color

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  frameRate(12);

  bg = color(0, random(30), random(50));

  clearBackground();

}

​

function draw() {

  // pause after 100 flowers

  if (0===(frameCount%100)) {

    noLoop();

    //clearBackground();

  }

  drawFlower();

}

​

function clearBackground() {

  bg = color(0, random(30), random(50));

  background(bg);

}

​

function mouseReleased() {

  clearBackground();

  loop();

}

​

function drawFlower() {

  // growing from within the canvas

  let centerX = random(width);

  let centerY = random(height);

  // in various colors and pen width

  stroke(random(100,255), random(180), random(70), 80); 

  strokeWeight(random(5));

  noFill();

  // initialize the flower

  let x, y, rad=0; 

  let nextX, nextY, nextR=0;

  let radius = 10;

  let radiusNoise = random(10);

  let startangle = random(360);                                   

  let endangle =  720 + random(900);                            

  let anglestep =  5 + random(3);

  // draw the flower

  for (let ang=startangle; ang<endangle; ang+=anglestep) { 

    radius += 0.5;

    radiusNoise += 0.05;

    let thisR = radius + noise(radiusNoise)*100 - 50;

    if (nextR == rad) {

      rad = radians(ang);

      x = centerX + thisR * cos(rad);

      y = centerY + thisR * sin(rad);

    }

    nextR = radians(ang+5);

    nextX = centerX + thisR*cos(nextR);

    nextY = centerY + thisR*sin(nextR);

    line(x, y, nextX, nextY);

    x = nextX;

    y = nextY;

  }

}

​

​