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A comment on Where'd The Water Go? Google Maps Water Pixel Detection With Canvas. Parent comment

Re:Where'd The Water Go? Google Maps Water Pixel Detection W... by erickerr on Tuesday September 17, 2013 @07:59PM (#6402645)
There is a performance hit for this. Rendering the 40 markers in the provided demo takes roughly 7ms on my machine vs 25ms for the fake lake method.
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