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Updated min bounds algorithm

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This commit is contained in:
J Guthrie 2018-10-03 22:07:20 +01:00
parent 9bf489a0b9
commit cf896fa0a7
1 changed files with 16 additions and 7 deletions
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23
app/assets/javascripts/index/history.js
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@ -97,17 +97,26 @@ OSM.History = function(map) {
$("[data-changeset]").each(function () { $("[data-changeset]").each(function () {
var changeset = $(this).data('changeset'); var changeset = $(this).data('changeset');
if (changeset.bbox) { if (changeset.bbox) {
var latModifier = 0; var latWidth = changeset.bbox.maxlat - changeset.bbox.minlat;
var lonModifier = 0; var lonWidth = changeset.bbox.maxlon - changeset.bbox.minlon;
var minLatWidth = 0.0004;
var minLonWidth = 0.0008;
if (changeset.bbox.minlat === changeset.bbox.maxlat || changeset.bbox.minlon === changeset.bbox.maxlon) { var bounds = [[changeset.bbox.minlat, changeset.bbox.minlon],
latModifier = 0.0001; [changeset.bbox.maxlat, changeset.bbox.maxlon]];
lonModifier = 0.0002;
if (latWidth < minLatWidth) {
bounds[0][0] -= ((minLatWidth - latWidth) / 2);
bounds[1][0] += ((minLatWidth - latWidth) / 2);
}
if (lonWidth < minLonWidth) {
bounds[0][1] -= ((minLonWidth - lonWidth) / 2);
bounds[1][1] += ((minLonWidth - lonWidth) / 2);
} }
changeset.bounds = L.latLngBounds( changeset.bounds = L.latLngBounds(
[changeset.bbox.minlat - latModifier, changeset.bbox.minlon - lonModifier], bounds);
[changeset.bbox.maxlat + latModifier, changeset.bbox.maxlon + lonModifier]);
changesets.push(changeset); changesets.push(changeset);
} }
}); });