constrainResolution does not work

[edigonzales]

I'm trying to prevent having intermediate zoom levels when zooming with the mousewheel:

DefaultInteractionsOptions interactionOptions = new ol.interaction.DefaultInteractionsOptions();
interactionOptions.setConstrainResolution(true);
interactionOptions.setDoubleClickZoom(false);
mapOptions.setInteractions(Interaction.defaults(interactionOptions));

olMap = new ol.Map(mapOptions);

It seems that this does not work. It is still possible to zoom with the mousewheel to any desired intermediate zoom level.

Tried also this, which does not work:

MouseWheelZoom mwz = new MouseWheelZoom();
mwz.set("constrainResolution", true);
olMap = new ol.Map(mapOptions);
olMap.addInteraction(mwz);

[TDesjardins]

Hi, I will have a look into this. Which Open Layers version are you using?

[edigonzales]

v6.6.1

Thanks.

[TDesjardins]

Yep, I can confirm this. Your first code snippet doesn't work because there is no such option in default interaction options: https://openlayers.org/en/v6.6.1/apidoc/module-ol_interaction.html#~DefaultsOptions I suppose this is a copy and paste bug in gwt-ol. The param has to be removed.

Second code doesn't work because the param is needed on object instantiation. So there is a need to introduce a constructor with options for mousewheel. I tested it and it works.

I am going to create a fix.

[TDesjardins]

@edigonzales I committed a fix. Could you check if this works for you?