Heartbeat (twk: star wave)

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/*

OpenProcessing Tweak of *@*http://www.openprocessing.org/sketch/170022*@*

!do not delete the line above, required for linking your tweak if you upload again

*/

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float unit;          //control sthe spread of the dots

float theta;         // controls speed of breathnig

int num = 50;       //tie to amount of movers

int frames = 180;    //velocity of frames - highr = slower

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void setup() {

  size(500, 500);

  unit = width/num;

}

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void draw() {

  //add drag to units

  fill(0, 110);

  rect(0, 0, width, height);

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//nsted forloop to make all units

  for (int y=0; y<=num; y++) {

    for (int x=0; x<=num; x++) {

      float distance = dist(mouseX, mouseY, x*unit, y*unit); //dist from center/mouse

      float offSet = map(distance, 0, sqrt(sq(width/2)+sq(height/2)), 0, TWO_PI); //pithgorian dist from each cartesian to circular

      float sz = map(sin(theta+offSet), -1, 1, unit*.1, unit*.5); //map the size or units to "breath"

      float angle = atan2(y*unit-mouseY, x*unit-mouseX);  //heading toword center/mouse

      //drawing it using sin cos for location to make breathing 

      pushMatrix();

      translate(x*unit, y*unit);

      rotate(angle);

      float px = map(sin(theta+offSet), -1, 1, 0, 50);

      float py = map(cos(theta+offSet), -1, 1, 0, 50);

      fill(255);

      rect(px, 0, sz, sz*4);

      strokeWeight(5);

      stroke(20, 90, 255, 10);

      line(px, 0, py, 0); 

      strokeWeight(.1);

      stroke(255);

      line(px, 0, py, 0); 

      popMatrix();

    }

  }

  //stroke(255);

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  theta -= TWO_PI/frames;

}

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