Unit 3 Review

Which of the following is a View function?

• redrawAll

• onMousePressed

• onStep

• onAppStart

Which of the following is an MVC violation?

• Drawing in onKeyPress

• Drawing in redrawAll

• Modifying app in onKeyPress

• Modifying app in onAppStart

Which of the following draws an oval centered in the middle of the canvas?

• drawOval(200, 200, 50)

• drawOval(150, 160, 100, 80)

• drawOval(150, 160, 50, 40)

• drawOval(200, 200, 50, 40)

Which of the following is true about onMouseMove?

• It is called when the user moves the mouse and the mouse is held down

• It is called when the user moves the mouse and the mouse is not held down

• It draws and is a View function

• It is called when the user releases the mouse

Which of the following is true about onKeyRelease?

• It draws and is a View function

• It takes keys as an argument, which is the list of keys released

• It can modify app and is a Controller function

• It is called when the user holds down any number of keys

Which of the following is true about onStep?

• It cannot modify app as that would be an MVC violation

• It is called after some time elapses

• It takes steps as an argument, which is the number of steps that have passed since it was last called

• It draws and is a View function

Which call to drawStar draws a star with 6 points and radius 30?

• drawStar(200, 200, 6, 30)

• drawStar(200, 200, 30, 6)

• drawStar(200, 200, 30, 30, 6)

• drawStar(30, 6)

If we wanted to make a dot bounce off the right edge of the canvas, which of the following is not one of the steps we need to do?

• Check if the dot's right edge is on or beyond the right edge of the canvas

• Change the direction the dot is moving in the horizontal direction

• Change the direction the dot is moving in the vertical direction

• Move the dot back so it is flush with the right edge of the canvas

Which of the following is not a Controller function?

• onStep

• onKeyPress

• redrawAll

• onMouseMove

Which of the following is an MVC violation?

• Modifying app in redrawAll

• Modifying app in onMousePress

• Modifying app in onAppStart

• Modifying app in onStep