Rose Darling.

Generative art made with Processing.
Generative art made with Processing.
Generative art made with Processing.

Description of this creative coding.

A Generative thing made with Processing creative coding.

I love the vector field by GenerateMe.

Drawing vector field
https://generateme.wordpress.com/2016/04/24/drawing-vector-field/

I've thought 'How about using strange attractor to calculate the vector field?'.
So I tried to use the De Jong attractor formula in it.
And it worked! It makes a beautiful generative thing!

This code does not display any images on the screen but just generates image files.

Processing code example.


Please feel free to use this example code, if you like it. To see other works based on my code is my pleasure. And my honor.


/**
 * Rose Darling.
 * draw vector field with De Jong attractors fromula.
 * 
 * @author @deconbatch
 * @version 0.1
 * Processing 3.2.1
 * 2019.05.13
 */

void setup() {

  size(980, 980);
  colorMode(HSB, 360, 100, 100, 100);
  smooth();
  noLoop();

}

void draw() {

  noiseSeed(floor(random(100)));

  int   paintCntMax = 5;
  int   plotCntMax  = 1000;
  float hueInit     = random(360.0);

  for (int imgCnt = 1; imgCnt <= 3; ++imgCnt) {

    // make 90 hue difference each image
    hueInit += 90.0;
    
    // shape parameters
    float paramA  = random(16.0, 20.0);
    float paramB  = random(4.0, 12.0);
    float paramC  = random(16.0, 20.0);
    float paramD  = random(4.0, 12.0);
    float plotDiv = random(0.0001, 0.0002);

    blendMode(SCREEN);
    background(hueInit, 100.0, 10.0, 100);
    strokeWeight(0.5);
    noFill();

    for (int paintCnt = 0; paintCnt < paintCntMax; ++paintCnt) {

      float paintRatio = map(paintCnt, 0, paintCntMax - 1, 0.0, 1.0);
      float hueBase    = hueInit + map(paintRatio, 0.0, 1.0, 120.0, 0.0);
      float initDiv    = map(paintRatio, 0.0, 1.0, 0.1, 0.01);
      float baseBri    = map(paintRatio, 0.0, 1.0, 4.5, 3.5);
      float baseSiz    = map(paintRatio, 0.0, 1.0, 30.0, 2.0);

      // draw vector field
      for (float xInit = 0.0; xInit <= 1.0; xInit += initDiv) {
        for  (float yInit = 0.0; yInit <= 1.0; yInit += initDiv) {

          float xPoint = xInit;
          float yPoint = yInit;

          for (int plotCnt = 0; plotCnt < plotCntMax; ++plotCnt) {

            float plotRatio = map(plotCnt, 0, plotCntMax, 0.0, 1.0);
            float eHue      = hueBase + plotRatio * 90.0;
            float eSat      = map(sin(PI * plotRatio), 0.0, 1.0, 100.0, 10.0);
            float eBri      = baseBri * (1.0 - sin(PI * plotRatio));
            float eSiz      = baseSiz * sin(PI * plotRatio);

            // De Jong attractors fromula
            float xPrev = xPoint;
            float yPrev = yPoint;
            xPoint += plotDiv * (sin(TWO_PI * paramA * yPrev) - cos(TWO_PI * paramB * xPrev));
            yPoint += plotDiv * (sin(TWO_PI * paramC * xPrev) - cos(TWO_PI * paramD * yPrev));

            stroke(eHue % 360.0, eSat, eBri, 100.0);
            ellipse(xPoint * width, yPoint * height, eSiz, eSiz);

          }
        }
      }
    }

    casing();
    saveFrame("frames/" + String.format("%04d", imgCnt) + ".png");

  }

  exit();

}

/**
 * casing : draw fancy casing
 */
private void casing() {
  blendMode(BLEND);
  fill(0.0, 0.0, 0.0, 0.0);
  strokeWeight(60.0);
  stroke(0.0, 0.0, 0.0, 100.0);
  rect(0.0, 0.0, width, height);
  strokeWeight(50.0);
  stroke(0.0, 0.0, 100.0, 100.0);
  rect(0.0, 0.0, width, height);
  noStroke();
  noFill();
}

/*
Copyright (C) 2019- deconbatch

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see 
*/






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