[controlP5] RESOLVED - simple object counting in textarea

calcolo

Hi all.

I need to display in a textarea the number of objects in canvas. These objects change often in time.

I tried with Behaviour, but Textarea class doesn't inherit setBehavior() method like e.g. the Slider class (why!?).

I tried with something like

void updateObjectNumber(){ Textarea textarea = ((Textarea)controlP5.getController("objectNumber")); textarea.setText(objects.size()); }

but it raise a casting error.

How can i do?

Thanks a lot!

calcolo

code in previous post fixed:

void updateBoidsNumber(){
    Textarea text = ((Textarea)gui.getController("boidsNumber"));
    text.setText(flock.boids.size()+" BOIDS");
}

sojamo

Hi, I posted a working example below. To access the Textarea, use gui.get(Textarea.class, "boidsNumber") this will make ControlP5 return a controller of a particular class (if matching the original). Instead of using a Textarea you could also use a Textlabel.

import controlP5.*;

ControlP5 gui;

void setup() {
  size(800,400);
  gui = new ControlP5(this);
  gui.addTextarea("boidsNumber").setPosition(100,100).setSize(100,50);
  // instead of using a Textarea you can also use a textlabel
  gui.addTextlabel("boidsNumberLabel").setPosition(100,200);
}

void draw() {
  background(40);
  updateBoidsNumber(frameCount);
}

void updateBoidsNumber(int theValue){
    Textarea text = (gui.get(Textarea.class, "boidsNumber"));
    text.setText(theValue+" BOIDS");
    gui.get(Textlabel.class, "boidsNumberLabel").setText(theValue+" BOIDS");
}

calcolo

Yes! Thanks so much.

Resolved.

quark

@calcolo

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