Wavy psychedellic colors

//Edited and reworked version of wave code from OpenProcesing by Mohini Dutta

​

//the spacing needs to be lower to make the grid look similar to the one you did manually.

int xspacing = 20;   

int yLoc = 0;

int w; 

​

//colors

float red= 255;

float yellow= 0;

​

float theta = 0.0;

float amplitude = 70.0;  

float period = 1200.0;  

float dx;

​

//array of y locations for all the ball waves

float[] yvalues;

​

void setup() {

  size (1000, 500);

  colorMode(HSB, 255);

  noStroke();

  w = width+ 320;

  dx = (TWO_PI / period) * xspacing;

  yvalues = new float[w/xspacing];

}

​

void draw() {

  background(0);

  renderWave();

  calcWave();

}

​

void calcWave() {

  //Movement of everything vertically

  theta += 0.01;  

​

  float x = theta;

  for (int i = 0; i < yvalues.length; i++) {

    yvalues[i] = sin(x)*amplitude;

    //make it wavy

    x+=dx;

  }

}

​

void renderWave() {

  //drawing a grid of circles using for loop 

  //(look at grid of circles code from class)

  for (int x = 0; x < yvalues.length; x++) {

    for (int i = 0; i < height; i +=20) { 

      //reducing the range of the map so the color range shows up

      // width/ higher or lower number changes the range of the colors

      float c = map (x, 0, width/20, red, yellow);

      fill(c, 255, 255);

      ellipse (x*xspacing, yvalues[x] + i, 10, 10);

    }

  }

}