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lab43
mixing images (conclusion)

Continuing on the idea of mixing images from last time: Make a similar function mix, which is like mix1 except that it makes a checkerboard pattern (bigger than a single-pixel square):

if our x,y position is exactly on a grid-outline, use black;
else if we're in an even grid-location (for grid of n x n pixels), use the pixel from the first picture picture
else use the pixel from the second picture.

Use top-down design to write the above function, inventing helper-functions (“the method of wishful thinking”); then we can go back and complete those helper-functions later; each helper-function will be a smaller/easier problem than the overall task.

Here is the solution.

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©2014, Ian Barland, Radford University
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lab43 mixing images (conclusion)

lab43
mixing images (conclusion)