You are looking for scale(). Take a look at this example:

Quote:

Well the question isn't totally clear, but if I understand what you're asking then what you need to do is something like this:

Code:

void mouseReleased() {
  if (chart.contains(mouseX, mouseY)) {
    chart.setEnlarged(true);
  }
}

void draw() {
  pushMatrix();
  if (chart.isEnlarged()) {
    scale(10);
  }
  chart.draw();
  popMatrix();
}
 

The above code assumes that you have an class which the variable chart is an instance of. That class would have a method contains(int x, int y) which would return whether or not that position was in the bounds of the object, as well as the methods setEnlarged(boolean b) and isEnlarged() which would probably just flip an internal boolean variable.

Finally the draw method would check if the chart was enlarged, and if it was scale before drawing it. The pushMatrix() and popMatrix() are to ensure that it doesn't scale everything, but just the chart in question.