webvr.isenabled does not work?

mstoss · November 10, 2016 at 2:31 PM

Hi all,

I need to deactivate some hotspots for the webvr tour. But

Code

<hotspot name="hs_1a" if="webvr.isenabled == false"

does not work. Something wrong with this idea? Is there an alternative standard approach to this?

Any help appreciated very much,

Yours,
Michael

Alexey Tkachenko · November 10, 2016 at 2:57 PM

Try cycling these spots via for(); and if webvr.isenabled == true, then disable them and if it's false, then enable the spots.

mstoss · November 10, 2016 at 3:08 PM

Well, thank you.

I tried something like that before. I added a parameter to a hotspot style ("tag1") and an action to the vtourskin.xml code for the webvr plugin:

vtourskin.xml:

Code

<plugin name="WebVR" keep="true" devices="html5"
          	(...)
	    	onentervr="skin_showloading(false); webvr_onentervr(); webvr_setup(); skin_reloadscene_webvr(); a_hiderichmediahs();"
	    	onexitvr="webvr_onexitvr(); webvr_setup(); skin_reloadscene_webvr(); a_showrichmediahs();"
	    	/>

tour.xml:

Code

<style name="details-hs" tag="hs" tag1="vrno" distorted="false" url="detail.png" onover="tween(scale,0.6);" onout="tween(scale,0.4);" scale="0.4" zorder="1" />


(...)


 <action name="a_showrichmediahs">
		for (set(i,0), i LT hotspot.count, inc(i),
			if (hotspot[get(i)].tag1 == vrno,
				set(hotspot[get(i)].visible,true);
				set(hotspot[get(i)].enabled,true);				
			  );
			);
	</action>	


	<action name="a_hiderichmediahs">
		for (set(i,0), i LT hotspot.count, inc(i),
			if (hotspot[get(i)].tag1 == vrno 
				set(hotspot[get(i)].visible,false);
				set(hotspot[get(i)].enabled,false);				
			  );
			);
	</action>

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But that did not work as expected. The hotspots were hidden in vrmode only, but - in vr mode - when returning to the same scene the hotspots showed up again.

Alexey Tkachenko · November 10, 2016 at 3:20 PM

You need to check spots not only when entering or exiting VR, but also when you go from scene to scene (onnewpano).

mstoss · November 10, 2016 at 3:44 PM

Quote from Alexey Tkachenko

You need to check spots not only when entering or exiting VR, but also when you go from scene to scene (onnewpano).

Ahhhh...

Code

<plugin name="WebVR" keep="true" devices="html5"
(...)
onentervr="... a_hiderichmediahs();"
onexitvr="... a_showrichmediahs();"
/>

Code

<events name="webvr_events" keep="true" devices="html5"
              	(...)
	    	onnewpano="a_hiderichmediahs();"	    	
	    	/>

Code

<action name="a_showrichmediahs">
		for (set(i,0), i LT hotspot.count, inc(i),
			if (hotspot[get(i)].tag1 == vrno,
				set(hotspot[get(i)].visible,true);
				set(hotspot[get(i)].enabled,true);				
			  );
			);
	</action>	


	<action name="a_hiderichmediahs">
		for (set(i,0), i LT hotspot.count, inc(i),
			if (hotspot[get(i)].tag1 == vrno AND webvr.isenabled == true,
				set(hotspot[get(i)].visible,false);
				set(hotspot[get(i)].enabled,false);				
			  );
			);
	</action>

Display More

Thank you very much!

Michael

mstoss · November 10, 2016 at 3:56 PM

... but still, I wonder why that really easy snippet of "hotspot name="hs_1a" if="webvr.isenabled == false" is not working. Shouldn't it?

Alexey Tkachenko · November 11, 2016 at 8:04 AM

Yep, I was doing the same task as you and the first thought was to use that 'if' check inside hotspots, but it was not simple. I made a test then and added two hotspots into first pano of the tour (one with webvr.isenabled == true and one with false) to see how it works and there were issues and Krpano works very logical here, the only thing is to understand its behaviour:

1) First pano is loaded before the VR plugin (it seemed so to me), so inside first pano none of the two spots were visible initially. That is, "if" check works only when xml is being parsed, so for Krpano there were no hotspots in this case (I used normal panos).
2) If I go from first scene to second and then return back, I see the spot with 'webvr.isenabled == false". If I enter VR then, the same spot stays visible. The reason here is that normal pano is not being reloaded when entering VR (Multires ones are reloaded to use webvr-ready images).
3) This is all quite logical, because "if" check inside attributes is meant only for xml parsing check - Krpano goes thtough xml at startup and checks those 'ifs' to see which elements are needed and which are not.

All this is based on my tests and experience, maybe Klaus and other guys here may add something about it.

klaus.krpano · November 11, 2016 at 9:32 AM

Hi,

Quote from Alexey Tkachenko

All this is based on my tests and experience, maybe Klaus and other guys here may add something about it.

All correct - the if="..." attribute is a xml-filter - it defines if that element will be used or skipped during the xml parsing - see:
https://krpano.com/docu/xml/#if

Best regards,
Klaus

mstoss · November 11, 2016 at 5:57 PM

Wow...

webvr.isenabled does not work?

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