CodeTrainFourierTransform/Reffrence.py at main · MyCondolences/CodeTrainFourierTransform · GitHub

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# / Coding Challenge 130.1: Drawing with Fourier Transform and Epicycles
# // Daniel Shiffman
# // https://thecodingtrain.com/CodingChallenges/130-fourier-transform-drawing.html
# // https://youtu.be/MY4luNgGfms
# // https://editor.p5js.org/codingtrain/sketches/jawHqwfda
#
# let x = [];
# let y = [];
# let fourierX;
# let fourierY;
# let time = 0;
# let path = [];
#
# function setup() {
#   createCanvas(800, 600);
#   const skip = 8;
#   for (let i = 0; i < drawing.length; i += skip) {
#     x.push(drawing[i].x);
#     y.push(drawing[i].y);
#   }
#   fourierX = dft(x);
#   fourierY = dft(y);
#
#   fourierX.sort((a, b) => b.amp - a.amp);
#   fourierY.sort((a, b) => b.amp - a.amp);
# }
#
# function epiCycles(x, y, rotation, fourier) {
#   for (let i = 0; i < fourier.length; i++) {
#     let prevx = x;
#     let prevy = y;
#     let freq = fourier[i].freq;
#     let radius = fourier[i].amp;
#     let phase = fourier[i].phase;
#     x += radius * cos(freq * time + phase + rotation);
#     y += radius * sin(freq * time + phase + rotation);
#
#     stroke(255, 100);
#     noFill();
#     ellipse(prevx, prevy, radius * 2);
#     stroke(255);
#     line(prevx, prevy, x, y);
#   }
#   return createVector(x, y);
# }
#
# function draw() {
#   background(0);
#
#   let vx = epiCycles(width / 2 + 100, 100, 0, fourierX);
#   let vy = epiCycles(100, height / 2 + 100, HALF_PI, fourierY);
#   let v = createVector(vx.x, vy.y);
#   path.unshift(v);
#   line(vx.x, vx.y, v.x, v.y);
#   line(vy.x, vy.y, v.x, v.y);
#
#   beginShape();
#   noFill();
#   for (let i = 0; i < path.length; i++) {
#     vertex(path[i].x, path[i].y);
#   }
#   endShape();
#
#   const dt = TWO_PI / fourierY.length;
#   time += dt;
#
#   if (time > TWO_PI) {
#     time = 0;
#     path = [];
#   }
#
#   // if (wave.length > 250) {
#   //   wave.pop();
#   // }
# }