Processing : Image cachée ou affichée

PImage singe;
float ratio = .25;

int singeVisible = 0;

void setup () {
  fullScreen();
  
  singe = loadImage("singe.png");
}

void draw() {
  background(0);
  singeVisible = 0;
  
  if (keyPressed) {
    if (key == ' ') {
      singeVisible = 1;
    }
  }
  
  if (singeVisible == 1) {
    image (singe, 0, 0, singe.width * ratio, singe.height * ratio);
  }
}