public static void main(String asdf[]) {
World w; // ticket to hold where our World is in memory
Turtle mt; // to hold where my Turtle is
w = new World(); // go to the World factory and, please, make me a World
mt = new Turtle(w); // make a new Turtle, like mamma turtle does in her belly
mt.setPenWidth(6);
mt.turn(180.0); // tells Turtle to turn all the way around, same effect as turning right twice.
mt.forward();
mt.turnLeft(); // class voted to make an L by turning left
mt.forward(); // we now have two lines of the L
mt.turnLeft();
mt.forward(30); // the toe was too long, so we tried a shorter length
// forward() and forward(int pixels) are two "polymorphic"
// methods: Different methods with the SAME name but
// different because of signature.
mt.turnLeft();
mt.forward(30 / 3); // add a hook to the toe. The hook was too long,
// so we program dividing the original length by 3
mt.hide(); // makes the Turtle's body become hidden, so the letter looks nicer.
// DONE! RELEASE IT! 1/31/2012
}
public static void main(String[] args) throws InterruptedException {
Turtle t = new Turtle();
t.hide();
t.speed(0);
double x = 0;
double y = 0;
t.onKey("clearScreen", "c");
System.out.println("-----2.5: THREE SHAPES-----");
System.out.println("\nLeft-click the canvas to draw a square.");
System.out.println("Middle-click the canvas to draw a circle.");
System.out.println("Right-click the canvas to draw a triangle.");
System.out.println("Press 'c' to clear the canvas.");
while (true) {
if (t.mouseButton1()) {
x = t.mouseX();
y = t.mouseY();
x = t.canvasX(x);
y = t.canvasY(y);
t.penColor("pink");
t.setDirection(0.0);
t.up();
t.setPosition(x, y);
t.down();
for (int i = 0; i < 4; i++) {
t.forward(50.0);
t.right(90.0);
}
Thread.sleep(100);
} else if (t.mouseButton2()) {
x = t.mouseX();
y = t.mouseY();
x = t.canvasX(x);
y = t.canvasY(y);
t.penColor("olive");
t.setDirection(0.0);
t.up();
t.setPosition(x, y);
t.down();
for (int i = 0; i < 360; i++) {
t.forward(0.5);
t.right(1.0);
}
Thread.sleep(100);
} else if (t.mouseButton3()) {
x = t.mouseX();
y = t.mouseY();
x = t.canvasX(x);
y = t.canvasY(y);
t.penColor("light blue");
t.setDirection(0.0);
t.up();
t.setPosition(x, y);
t.down();
for (int i = 0; i < 3; i++) {
t.forward(50.0);
t.right(120.0);
}
Thread.sleep(100);
}
}
}
