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Merge pull request #6486 from ahocevar/reset-on-pointer-count-change

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Do not set center when touches count has changed
This commit is contained in:
Andreas Hocevar
2017-02-14 01:29:11 +01:00
committed by GitHub
parent 0c159cf0f7 676dda7ca6
commit fbd954ac7c
1 changed files with 29 additions and 16 deletions
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15
src/ol/interaction/dragpan.js
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@@ -39,6 +39,11 @@ ol.interaction.DragPan = function(opt_options) {
*/ */
this.lastCentroid = null; this.lastCentroid = null;
/**
* @type {number}
*/
this.lastPointersCount_;
/** /**
* @private * @private
* @type {ol.EventsConditionType} * @type {ol.EventsConditionType}
@@ -62,8 +67,10 @@ ol.inherits(ol.interaction.DragPan, ol.interaction.Pointer);
* @private * @private
*/ */
ol.interaction.DragPan.handleDragEvent_ = function(mapBrowserEvent) { ol.interaction.DragPan.handleDragEvent_ = function(mapBrowserEvent) {
var targetPointers = this.targetPointers;
var centroid = var centroid =
ol.interaction.Pointer.centroid(this.targetPointers); ol.interaction.Pointer.centroid(targetPointers);
if (targetPointers.length == this.lastPointersCount_) {
if (this.kinetic_) { if (this.kinetic_) {
this.kinetic_.update(centroid[0], centroid[1]); this.kinetic_.update(centroid[0], centroid[1]);
} }
@@ -80,7 +87,13 @@ ol.interaction.DragPan.handleDragEvent_ = function(mapBrowserEvent) {
center = view.constrainCenter(center); center = view.constrainCenter(center);
view.setCenter(center); view.setCenter(center);
} }
} else if (this.kinetic_) {
// reset so we don't overestimate the kinetic energy after
// after one finger down, tiny drag, second finger down
this.kinetic_.begin();
}
this.lastCentroid = centroid; this.lastCentroid = centroid;
this.lastPointersCount_ = targetPointers.length;
}; };