Կոճակ օբյեկտ

var btn1 = new Button(...);
btn1.draw();

mouseClicked = function() {
  if (btn1.isMouseInside()) {
     println("Whoah, you clicked me!");
  }
}

var btn1 = {...};
drawButton(btn1);

mouseClicked = function() {
  if (isMouseInside(btn1)) {
     println("Whoah, you clicked me!");
  }
}

var Button = function(x, y, width, height) {
    this.x = x;
    this.y = y;
    this.width = width;
    this.height = height;
};

var btn1 = new Button(100, 100, 150, 150);

var Button = function(config) {
    this.x = config.x;
    this.y = config.y;
    this.width = config.width;
    this.height = config.height;
    this.label = config.label;
};

var btn1 = new Button({
    x: 100, y: 100,
    width: 150, height: 50,
    label: "Please click!"});

var Button = function(config) {
    this.x = config.x || 0;
    this.y = config.y || 0;
    this.width = config.width || 150;
    this.height = config.height || 50;
    this.label = config.label || "Click";
};

var btn1 = new Button({x: 100, y: 100, label: "Please click!"});

Button.prototype.draw = function() {
    fill(0, 234, 255);
    rect(this.x, this.y, this.width, this.height, 5);
    fill(0, 0, 0);
    textSize(19);
    textAlign(LEFT, TOP);
    text(this.label, this.x+10, this.y+this.height/4);
};

btn1.draw();

Button.prototype.isMouseInside = function() {
    return mouseX > this.x &&
           mouseX < (this.x + this.width) &&
           mouseY > this.y &&
           mouseY < (this.y + this.height);
};

mouseClicked = function() {
    if (btn1.isMouseInside()) {
        println("You made the right choice!");
    } else if (btn2.isMouseInside()) {
        println("Yay, you picked me!");
    }
};

mouseClicked = function() {
    if (btn1.isMouseInside()) {
        println("You made the right choice!");
    } else if (btn2.isMouseInside()) {
        println("Yay, you picked me!");
    }
};

var Button = function(config) {
    ...
    this.message = config.message || "Clicked!";
};

Button.prototype.handleMouseClick = function() {
    if (this.isMouseInside()) {
         println(this.message);
    }
};

var btn1 = new Button({
    x: 100,
    y: 100,
    label: "Please click!",
    message: "You made the right choice!"
});

mouseClicked = function() {
   btn1.handleMouseClick();
};

var btn1 = new Button({
    x: 100,
    y: 100,
    label: "Please click!",
    onClick: function() {
       text("You made the right choice!", 100, 300);
    }
});

var Button = function(config) {
    // ...
    this.onClick = config.onClick || function() {};
};

Button.prototype.handleMouseClick = function() {
    if (this.isMouseInside()) {
        this.onClick();
    }
};