May be I am tired of thinking logics (button pressing)

blyk

Hi, I am trying to make a button which gets enabled when mouse is over the button and gets disable when mouse goes over the button again. Actually what's happening here is when I bring my mouse over the ellipse it keeps switching between the enable and disable mode and doesn't stop until I move my cursor. I want this to be happen once at a time.

          boolean flag=false;
          int x, y, radius=100;

          void setup() {
            size(400, 400);
            x = width/2;
            y = width/2;
          }
          void draw() {
            background(-1);
            if (dist(mouseX, mouseY, x, y)<radius/2) {
              flag=!flag;
            }
            if (flag) {
              fill(0, 255, 0);
            }
            else {
              fill(255, 0, 0);
            }
            ellipse(x, y, radius, radius);
          }

_vk

maybe this?

boolean flag=false;
boolean wasOutside = true;
int x, y, radius=100;

void setup() {
  size(400, 400);
  x = width/2;
  y = width/2;
}
void draw() {
  background(-1);
  if (dist(mouseX, mouseY, x, y)<radius/2 && wasOutside) {
    flag=!flag;
    wasOutside = false;
  }else if (dist(mouseX, mouseY, x, y)>radius/2){
    wasOutside = true;
  }
  if (flag) {
    fill(0, 255, 0);
  }
  else {
    fill(255, 0, 0);
  }
  ellipse(x, y, radius, radius);
}

blyk

Exactly what I wanted ........ thanks