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Adjust resolution then animate to next

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This commit is contained in:
Tim Schaub
2016-11-11 13:34:13 -07:00
parent 94e6dc4e4e
commit 7dd7eb1b6f
1 changed files with 20 additions and 0 deletions
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20
src/ol/interaction/mousewheelzoom.js
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@@ -1,6 +1,7 @@
goog.provide('ol.interaction.MouseWheelZoom');
goog.require('ol');
goog.require('ol.easing');
goog.require('ol.events.EventType');
goog.require('ol.has');
goog.require('ol.interaction.Interaction');
@@ -135,6 +136,24 @@ ol.interaction.MouseWheelZoom.handleEvent = function(mapBrowserEvent) {
ol.interaction.MouseWheelZoom.Mode.WHEEL;
}
if (this.mode_ === ol.interaction.MouseWheelZoom.Mode.TRACKPAD) {
var view = map.getView();
view.cancelAnimations();
var resolution = view.getResolution() * Math.pow(2, delta / 300);
if (this.lastAnchor_) {
var center = view.calculateCenterZoom(resolution, this.lastAnchor_);
view.setCenter(center);
}
view.setResolution(resolution);
view.animate({
resolution: view.constrainResolution(resolution, delta > 0 ? -1 : 1),
easing: ol.easing.easeOut,
anchor: this.lastAnchor_
});
this.startTime_ = now;
return false;
}
this.delta_ += delta;
var timeLeft = Math.max(this.timeout_ - (now - this.startTime_), 0);
@@ -159,6 +178,7 @@ ol.interaction.MouseWheelZoom.prototype.doZoom_ = function(map) {
ol.interaction.Interaction.zoomByDelta(map, view, -delta, this.lastAnchor_,
this.duration_);
}
this.mode_ = undefined;
this.delta_ = 0;
this.lastAnchor_ = null;
this.startTime_ = undefined;