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IQAndreas/gist:6576705

Last active December 23, 2015 03:59
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// `bigRect.mouseX` can be replaced by `stage.mouseX - bigRect.x`
var ratioX:Number = bigRect.mouseX / bigRect.width;
var ratioY:Number = bigRect.mouseY / bigRect.height;
// This is the x and y location inside of the small rectangle which should line up with the above point
var offsetX:Number = ratioX * smallRect.width;
var offsetY:Number = ratioY * smallRect.height;
smallRect.x = bigRect.x + (ratioX * bigRect.width) - offsetX;
smallRect.y = bigRect.y + (ratioY * bigRect.height) - offsetY;
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The code assumes the registration point for the rectangles is in the top left corner. It's not in processing, but only uses basic math operators, so it should be quick and easy to convert to any language.

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