Hi,

I'm trying to start with processing.

Now I'm just trying to scale a rectangle. I have found this example:

1. float a = 0.0;
   float s = 0.0;
   
   void setup()
   {
    size(200,200);
    rectMode(CENTER);
    frameRate(30);
   }
   
   void draw()
   {
   
    s = s + 0.04;
   
    translate(width/2, height/2);
    scale(s); 
    rect(0, 0, 50, 50); 
   
   }
   

It scales smoothly the rectangle but I'm a bit surprise because for resizing a rectangle I expected the sizing parameters (3rd and 4th) of rect() were modified, something like this way:

1. float r = 1;
   
   void setup()
   {
    size(200,200);
    rectMode(CENTER);
    frameRate(30);
   }
   
   void draw(){
   
    rect(width/2, height/2, r, r); 
   
    r += 1;
   
   }
   

but this way doesn't scale the rectangle smoothly. So, should I use the first approach instead of the second one even if I find it the second one more natural? Any comment will be wellcome.

Regards

Javier