wschutzer

/* Gradient disk wave
 * ------------------
 * Draws a grid of tangent-gradient filled spinning disks whose rotation speed
 * varies in waves travelling through the grid.
 *
 * This code uses shaders to aproximate the motion blur effect by averaging the pixels along a sequence
 * of frames.
 *  
 * Copyright (C) 2025 Waldeck Schutzer (@infinitymathart) 
 *  

wschutzer

/* Wrapping ribbon
 * ---------------
 * Shows a ribbon gradually wrapping up an infinite cylinder.
 * This code uses shaders to aproximate the motion blur effect by averaging the pixels along a sequence
 * of frames.
 *  
 * Copyright (C) 2025 Waldeck Schutzer (@infinitymathart) 
 *  
 * 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  

wschutzer

// note : if you're on github gist and want to copy paste this code, you can click on the "Raw" button
// and then do Ctrl A, Ctrl C, Ctrl V
// (code below by Kurt Spencer, slightly modified code to run as Processing tab)
// maybe you should rather use this new (improved) version of the noise instead : https://github.com/KdotJPG/OpenSimplex2

/*
 * OpenSimplex Noise in Java.
 * by Kurt Spencer
 * 
 * v1.1 (October 5, 2014)

wschutzer

/* Sliding disks with offsets
 * --------------------------
 *
 * This program draws two superimposed grids of black and white disks. One grid remains
 * stationary and the other grid moves from right to left. As it does, optical effects
 * are created which depends on small horizontal offsets applied to the disks.
 *
 * This code uses shaders to aproximate the motion blur effect by averaging the pixels along a sequence
 * of frames.
 *  

wschutzer

/* The 3-body Problem (actually n-body)
 * -------------------------------------
 *  
 * Copyright (C) 2025 Waldeck Schutzer <[email protected]> (@infinitymathart) 
 *  
 * 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.  
 *  

wschutzer

/* Particles following vector fields
 * ---------------------------------
 *  
 * Copyright (C) 2025 Waldeck Schutzer (@infinitymathart) 
 * Based on code by Étienne Jacob (@etinjcb)
 *  
 * 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.  

wschutzer

/* Waves and digits on a torus (inside view)
 * -----------------------------------------
 * Requires OpenSimplexNoise, available here: https://gist.github.com/wschutzer/4be8f14d12fc3541024f796ee7fb6fe2
 * Download OpenSimplexNoise.pde and place it in the same folder of this file.
 *  
 * Copyright (C) 2024 Waldeck Schutzer (@infinitymathart) 
 *  
 * 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  

wschutzer

/*
 * delayedcurves7
 * --------------
 * This code creates an animation consisting of colored balls moving according to random noise (OpenSimplexNoise)
 * The balls are connected with flexible lines that follow the movement with some delay.
 *  
 * Copyright (C) 2024 Waldeck Schutzer (@infinitymathart) 
 *  
 * 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  

wschutzer

#include "OpenSimplexNoise.h"

#include <cmath>
namespace OpenSimplexNoise
{
  using namespace std;

  Noise::Noise()
    : m_stretch2d(-0.211324865405187) //(1/Math.sqrt(2+1)-1)/2;
    , m_squish2d(0.366025403784439)   //(Math.sqrt(2+1)-1)/2;

wschutzer

/* Love Equation
 * ---------------------
 *  
 * Copyright (C) 2024 Waldeck Schutzer (@infinitymathart) 
 *  
 * 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.  
 *