add formula to setZoomLevel doc

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Shelley Vohr 2018-02-09 23:20:45 -05:00
parent 647d04cf92
commit 5818353ebc
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@ -831,7 +831,8 @@ Sends a request to get current zoom factor, the `callback` will be called with
Changes the zoom level to the specified level. The original size is 0 and each
increment above or below represents zooming 20% larger or smaller to default
limits of 300% and 50% of original size, respectively.
limits of 300% and 50% of original size, respectively. The formula for this is
`scale := 1.2 ^ level`.
#### `contents.getZoomLevel(callback)`