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Fix for #10054

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Ensure zoom level is not less than minimum integer zoom level for extent
This commit is contained in:
mike-000
2019-09-29 12:00:08 +01:00
committed by GitHub
parent 1260dfc153
commit eaa5af2c7a
1 changed files with 6 additions and 2 deletions
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8
src/ol/resolutionconstraint.js
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@@ -127,10 +127,14 @@ export function createSnapToPower(power, maxResolution, opt_minResolution, opt_s
return getSmoothClampedResolution(resolution, cappedMaxRes, minResolution);
}
const offset = -direction * (0.5 - 1e-9) + 0.5;
const tolerance = 1e-9;
const minZoomLevel = Math.ceil(
Math.log(maxResolution / cappedMaxRes) / Math.log(power) - tolerance);
const offset = -direction * (0.5 - tolerance) + 0.5;
const capped = Math.min(cappedMaxRes, resolution);
const zoomLevel = Math.floor(
const cappedZoomLevel = Math.floor(
Math.log(maxResolution / capped) / Math.log(power) + offset);
const zoomLevel = Math.max(minZoomLevel, cappedZoomLevel);
const newResolution = maxResolution / Math.pow(power, zoomLevel);
return clamp(newResolution, minResolution, cappedMaxRes);
} else {