same lines - new shifts - one

// day three: working with blending in the aplphas

​

float lineStroke = 10;

float growthSpeed = 1.9;

float growthDirection = 1;

float lineAlpha;

float degrees = 10;

​

void setup(){

  size(500, 500);

  background(0);

}

​

​

void draw(){

  lineStroke = lineStroke + (growthSpeed * growthDirection);

  //stroke pulse

  if(lineStroke > 500 || lineStroke < 1){

    growthDirection *= -1;

  } 

  // pulse degrees

  if(degrees < 360 ){

    degrees = degrees + 1;

  } 

  if(degrees == 360){

    degrees = 0;

  }

  // reverse the degrees

  float degrees2 = map(degrees, 0, 360, 360 ,0);

  // white line / rectangle

  noStroke();

  rectMode(CENTER);

  fill(255,20);

  rect(width/2, height/2, width, lineStroke );

  // black lines

  fill(0);

  //line one

  pushMatrix();

  translate(400, height/2);

  rotate(radians(degrees));

  rect(0,0, lineStroke/2, height*2 );

  popMatrix();

  //line two

  pushMatrix();

  translate(100, height/2);

  rotate(radians(degrees2));

  rect(0,0, lineStroke/2, height*2 );

  popMatrix();

}