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Fix zoom to anchor

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This commit is contained in:
Tom Payne
2012-08-06 09:14:28 +02:00
parent fe8c064a2e
commit d62f776be5
1 changed files with 4 additions and 14 deletions
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18
src/ol/control/control.js
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@@ -88,23 +88,13 @@ ol.Control.prototype.setResolution = function(map, resolution) {
*/
ol.Control.prototype.zoom = function(map, resolution, delta, opt_anchor) {
if (goog.isDefAndNotNull(opt_anchor)) {
var anchor = opt_anchor;
var mapCenter = /** @type {!ol.Coordinate} */ map.getCenter();
var mapResolution = map.getResolution();
resolution = this.constraints.resolution(resolution, delta);
var center;
if (resolution < mapResolution) {
center = opt_anchor.clone();
center.subtract(mapCenter);
center.scale(resolution / mapResolution);
center.add(mapCenter);
} else if (resolution == mapResolution) {
center = mapCenter;
} else {
center = mapCenter.clone();
center.subtract(opt_anchor);
center.scale(resolution / mapResolution);
center.add(opt_anchor);
}
var x = anchor.x - resolution * (anchor.x - mapCenter.x) / mapResolution;
var y = anchor.y - resolution * (anchor.y - mapCenter.y) / mapResolution;
var center = new ol.Coordinate(x, y);
center = this.constraints.center(center, resolution, ol.Coordinate.ZERO);
map.withFrozenRendering(function() {
map.setCenter(center);