Calculate default zoom level in quick search #51
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Calculate longitude span for area, then get such zoom level, where tile width is above this span. Previous implementation loads unnecessarily large tiles, if area is located at the border of two large tiles. Hence, download more smaller tiles (typically 1, 2 or 4).
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Good job mkouhia, thank you! I have to admit that geodetic computation are not my strongpoint. :) |
tomasbedrich
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Jan 3, 2016
Calculate default zoom level in quick search
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Calculate longitude span for area, then get such zoom level, where tile width
is above this span.
Previous implementation loads unnecessarily large tiles, if area is located at
the border of two large tiles. Hence, download more smaller tiles (typically
1, 2 or 4).