chromatography_Processing

float solventSp = 1;

float Rrf = 0.65;

float Grf = 0.25;

float Brf = 0.05;

float startPosX = 200;

float startPosY = 700;

int numParticle = 5000;

colorParticle[] particleArray;

void setup()

{

  size(400, 800);

  particleArray = new colorParticle[numParticle];

  for (int i = 0; i < numParticle; i++)

  {

    particleArray[i] = new colorParticle();

  }

}

void draw()

{  

  smooth();

  background(0);

  strokeWeight(5);

  stroke(1, 255, 255, 50);  

  point(width/2, height - 100);

  for (int i = 0; i < numParticle; i++)

  {

    particleArray[i].drawParticle();

    particleArray[i].moveParticle();

  }

  if ( solventSp > 0 )

  {

    solventSp = solventSp - 0.001;

  }

  else

  {

    solventSp = 0;

  }

}

class colorParticle

{

  float R;

  float G;

  float B;

  float A;

  float rf;

  float y;

  float x;

  colorParticle()

  {

    R = random(255);

    G = random(255);

    B = random(255);

    A = 2;

    rf = Rrf * (255 - R) / 255 + Grf * (255 - G) / 255 + Brf * (255 - B) / 255;

    x = startPosX + (25 - random(50));

    y = startPosY;

  }

  void drawParticle()

  {

    strokeWeight(20);

    stroke(R, G, B, A);  

    point(x, y);

  }

  void moveParticle()

  {

    y = y - solventSp *rf;

  }

}