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Revision as of 13:08, 1 December 2015 by Andr3w (talk | contribs) (Lots of squares - one is a different colour)
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The animations here rely on Gif89Encoder available from developed by JMG Elliot.

Moving block

You can click on "Show" to see the full program.

The method drawFrame is called 20 times; frame is a different value each time, the graphics object is new each time. Draws a yellow rectangle at coordinates (50,8*frame-20) which is (50,-20), (50,-12), (50,-2), (50,6) ... (50,172) So the yellow box appears at the top of the image and moves down a little with each frame.

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Shooting Star

In this example both the x and the y coordinates change at each frame and so the star moves diagonally.

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Rotating Star

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Lots of squares - one is a different colour

We will print 20 squares.

Each of them will be yellow - except one.

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