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Fix differenced redraw artifacts during pan/zoom

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Fixes #543.
This commit is contained in:
John Firebaugh
2013-01-28 16:54:38 -05:00
parent 11ddcdd568
commit 3c99d36a76
1 changed files with 11 additions and 2 deletions
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13
js/id/renderer/map.js
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@@ -165,24 +165,33 @@ iD.Map = function() {
}
function resetTransform() {
if (!surface.style(transformProp)) return;
if (!surface.style(transformProp)) return false;
surface.style(transformProp, '');
tilegroup.style(transformProp, '');
return true;
}
function redraw(difference) {
resetTransform();
// If we are in the middle of a zoom/pan, we can't do differenced redraws.
// It would result in artifacts where differenced entities are redrawn with
// one transform and unchanged entities with another.
if (resetTransform())
difference = undefined;
surface.attr('data-zoom', ~~map.zoom());
tilegroup.call(background);
if (map.editable()) {
connection.loadTiles(projection, dimensions);
drawVector(difference);
} else {
editOff();
}
transformStart = [
projection.scale(),
projection.translate().slice()];
return map;
}