Dave Drohan (SETU)
Exercises
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For each exercise listed below, create a new sketch.
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You may need to visit the Processing website for additional information.
Exercise 1
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Create a display window of 500x400, with a black background.
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When the mouse is pressed, draw a red circle (100 pixel diameter) with a white outline.
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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.
Exercise 2
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Create a display window of 500x400, with a black background.
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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.
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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.
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When no button is pressed and the mouse is dragged, nothing should be drawn.
Exercise 3
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Draw circles (diameter 100) as the mouse is moved (the background should not be cleared).
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When the mouse is pressed, reduce the size of the circle by 10 pixels.
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When the circle diameter reaches 50 pixels, don’t reduce it anymore.
Exercise 4
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Draw circles (diameter 100) as the mouse is moved (the background should not be cleared).
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As each circle is drawn, its colour should vary from the previous one (use mathematical calculations on your RBG colours).
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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?
