Final exams pt 5

Question 1

Describe the different procedures for mouse input

Answer 1

• mousePressed() – called when a mouse button is pressed
• mouseReleased() – called when a mouse button is released
• mouseDragged() – called when the mouse is moved while a button is held down
• mouseMoved () – called when the mouse is moved

Question 2

Write code that:
Draws a circle at the mouse cursor when the mouse is pressed

Answer 2

void mousePressed(){
ellipse(mouseX, mouseY, 100, 100);
}

Question 3

Draws a rect when the mouse is released

Answer 3

void mouseReleased(){
rect(mouseX, mouseY, 100, 200);
}

Question 4

Draws a trail of circles whenever the mouse moves

Answer 4

void mouseMoved(){
circle(mouseX, mouseY, 100);
}

Question 5

Describe the purpose of external libraries

Answer 5

add functions and features to program which have been
1) created by someone else
2) reused from other projects.

Question 6

What line of code is needed to use an external library in a program?

Answer 6

import library name;

Question 7

Describe some advantages of ControlP5 over other input types

Answer 7

1) simplifies program –> each button has procedure associated with it
2) large if statements NOT needed if you have many buttons
3) Buttons can be hidden/shown as needed in program.