Tutors

Lab-03

Labs

Mouse Example 3.7

In this step, we will implement an example from your lecture.

If the LEFT button on the mouse is pressed, set the fill to black and draw a square. As soon as the LEFT button is released, gray fill the square.
If the RIGHT button on the mouse is pressed, set the fill to white and draw a square. As soon as the RIGHT button is released, gray fill the square.
If no mouse button is pressed, set the fill to gray and draw a square.

Mouse Example 3.7

Create a new Processing sketch in your workspace and call it Example_3_7.

Enter the following code into your sketchbook (avoid the temptation to copy and paste it…you learn more by writing the code out):

void setup() {
  size(100,100);
}

void draw() { 
   if (mousePressed){
       if (mouseButton == LEFT) 
            fill(0);      // black
       else if (mouseButton == RIGHT)
            fill(255);    // white
   }        
   else { 
       fill(126);     // gray
    }
    rect(25, 25, 50, 50);
}

Run your code. Does it work as you would expect?

Lab-03

Lab-03

Conditional Statements

Conditional Events