Change Text by Clicking

RifleGirl

How would you change the text in a specific area by clicking.

I tried void mousePressed but am having difficulty with getting the old number to disappear.

Chrisir

Hello,

first you need a global variable:

boolean textHasBeenClicked = false;

in draw() :

say

void draw() {
    background(0);
    if (textHasBeenClicked) {
        // display text 2
        text("has been pressed" , 100,100); 
    }
    else  {
        // display text 1
        text("please press" , 100,100); 
    }
} 

and

void mousePressed() {
    // toggle 
    textHasBeenClicked = ! textHasBeenClicked;
}

Thus the var shows the program what to display.

• You have one part where you tell the var what state it has and
• one part where you read out this var.

Often beginners don't use a var like that but try to display the different text when the mouse is clicked. Won't work.

Alternatively

Alternatively you can display a text in draw() via a String var.

String myText = "please press ";

in mousePressed() you then would change the var myText.

No If necessary in draw() then. ;-)

To take this further, when you have three different texts you would instead of a boolean use an int var that can only have values 0,1,2...

To organize a whole program with this approach google states.

Chrisir ;-)

Chrisir

boolean textHasBeenClicked = false;

of course

;-)