Display text as a wave

Processing Coding Questions
1

this is my code…

int xspace = 5;   // How far apart should each horizontal location be spaced
int w;              // Width of entire wave

float theta = 0.0;  // Start angle at 0
float amplitude = 80.0;  // Height of wave
float period = 700.0;  // How many pixels before the wave repeats
float dx;  // Value for incrementing X, a function of period and xspacing
float[] yvalues;  // Using an array to store height values for the wave

void setup() {
  size(640, 360);
  w = width+16;
  background(255);
  dx = (TWO_PI / period) * xspace;
  yvalues = new float[w/xspace];
  calWave();
  drawWave();
}

void draw() {
  ;
}

void calWave() {
  // Increment theta (try different values for 'angular velocity' here
  theta += 0.02;

  // For every x value, calculate a y value with sine function
  float x = theta;
  for (int i = 0; i < yvalues.length; i++) {
    yvalues[i] = sin(x)*amplitude;
    x+=dx;
  }
}

void drawWave() {
 
  // A simple way to draw the wave with an ellipse at each location
  for (int x = 0; x < yvalues.length; x++) {
    ellipse(x*xspace, height/2+yvalues[x], 5, 5);
  }
}
2

well, instead of the circle print a character? is that the idea?

and your code must be formatted ( in PDE by [ctrl][t] )
and pasted here
</> Preformatted text button

so it looks like this:

int xspace = 15; //________ How far apart should each horizontal location be spaced
int w; //__________________ Width of entire wave
float theta = 0, dt =0.02; //Start angle at 0
float amplitude = 80.0; //_ Height of wave
float period = 640.0; //___ How many pixels before the wave repeats
float dx; //_______________ Value for incrementing X, a function of period and xspacing
float[] yvalues; //________ Using an array to store height values for the wave

void setup() {
  size(640, 360);
  w = width+16;
  background(255);
  dx = (TWO_PI / period) * xspace;
  yvalues = new float[w/xspace];
  println("xspace "+xspace+" w "+w +" dx "+dx);
  textSize(20);
  fill(0);
}

void draw() {
  background(200, 200, 0);
  calWave();
  drawWave();
}

void calWave() {
  theta += dt; //__________ Increment theta (try different values for ‘angular velocity’ here
  for (int i = 0; i < yvalues.length; i++)
    yvalues[i] = sin(theta+i*dx)*amplitude; // For every x value, calculate a y value with sine function
}

void drawWave() { //_______ A simple way to draw the wave with an ellipse at each location
  for (int x = 0; x < yvalues.length; x++) {
    point(x*xspace, height/2);
    //noFill();
    //ellipse(x*xspace, height/2+yvalues[x], xspace, xspace);
    text("O", x*xspace, height/2+yvalues[x]); // here need random chars?
  }
}
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3

Please do not vandalize posts after receiving answers. This hides answers from the community.

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