Tutors

Lab-03

Labs

Exercises

For each exercise listed below, create a new sketch.
You may need to visit the Processing website for additional information.

Exercise 1

Create a display window of 500x400, with a black background.
When the mouse is pressed, draw a red circle (100 pixel diameter) with a white outline.
Note: when the mouse is pressed and dragged, multiple circles should be drawn. When the mouse is released and moved, no circles should be drawn.

Expected output

Exercise 2

Create a display window of 500x400, with a black background.
When the LEFT mouse button is pressed, draw a red circle (50 pixel diameter) with a white outline. Note: when this button is pressed and dragged, multiple circles should be drawn.
When the RIGHT mouse button is pressed, draw a blue square (length of 50 pixels) with a white outline. Note: when this button is pressed and dragged, multiple squares should be drawn.
When no button is pressed and the mouse is dragged, nothing should be drawn.

Expected output

Exercise 3

Draw circles (diameter 100) as the mouse is moved (the background should not be cleared).
When the mouse is pressed, reduce the size of the circle by 10 pixels.
When the circle diameter reaches 50 pixels, don’t reduce it anymore.

Expected output

Exercise 4

Draw circles (diameter 100) as the mouse is moved (the background should not be cleared).
As each circle is drawn, its colour should vary from the previous one (use mathematical calculations on your RBG colours).
Make sure you boundary test this exercise. What we mean by that is…test what happens when your colour reaches 0 or when it reaches 255. Does it reset itself and cycle through the colours again or does it get stuck drawing in only one colour?

Expected output

Lab-03

Lab-03

Conditional Statements

Conditional Events