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I'm trying to create a basic grid of hex tiles. I found some code:

s=h/Math.cos(30*Math.PI/180)/2;
tile._x=x*s*1.5;
tile._y=y*h+(x%2)*h/2;

That does just that, but I think it's setup for hexes that have same length sides. However, my hex has different length sides. Its width is 140 and its height is 80. How would I change that code to accomodate this?

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Try this: if w,h are the width and height of your tile image, replace the first two lines of that code sample with just

tile._x = x * 0.75 * w;

The factor of 0.75 comes from the geometry of hexagons, where the spacing between adjacent columns is 3/4 of the diameter of a single hexagon. (It's the same origin as the 1.5 in the original code, where s was the side length of the hexagon, which is half its diameter.)

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