I have a square and a exclipse, the square is shrinking to a certain size and the eclipse is growing to a certain size. I got the shapes to stop at the certain sizes but after they stop I need them to grow to their regular shape and then shrink in a loop.

 

I also need help trying to make a function where this process can be stopped by touching a key and then resumes by clicking the mouse.

 

This is the code I have so far..

 

int circleSize=0;
int radius=0;
int radius2=300;
void setup()
{
  size (400,400);
}

void draw()
{
  background(255);
  stroke(0);
  fill(170);
  rectMode(CENTER);
 
 rect(width/2,height/2,radius2,radius2);
radius2--;
 fill(0,170,0);
  ellipseMode(CENTER);
  ellipse(width/2, height/2, radius, radius);
  radius++;
  smooth();
      if (radius2 == 151){
        radius2 = 151+1;
      
      }
      if (radius == 150){
      radius--;
 
  }
}

 

 

I'm a beginner and I've been trying to figure this out for a little bit, if someone could please help I would appreciate it.

Thanks!