Shadow Time Mismatch?

thomthom

Why doesn't the times match?

thomthom

Even when I change the timezone in SU ruby return the same number.

TIG

I concur.

["TZOffset"] should return the offset from the TZ ???
But it seems flaky - my default SKP template [geo-located in the UK] says '1.0' when I first list the shadow_info as an array, but if I try to extract it as above it returns '-0.0' ?
The "ShadowTime" is always returned as 1 hour ahead of the displayed time
The setting for 'daylight-saving' seems equally useless...

thomthom

Oddly enough I get the time I want if I do this: model.shadow_info['ShadowTime'].getutc

Which is just odd... Probably just a coincidence with my computers TZ.

TIG

I think you have it.
It's reporting the time at GMT - you need to convert it to your [or your SKP's] local time...
EDIT .gmt? returns false !

thomthom

@tig said:

you need to convert it to your [or your SKP's] local time...

How do you get that?

thomthom

hmm...

Is SU returning the time in UTC?
And Ruby thinks it's local time - so it add's the computers TZ to the string?

thomthom

No... this is all wrong... my brain melts to a mush of this...

TIG

Time.zone returns the time-zone that SketchUp thinks the SKP is in.
I think this 1 hour stuff is because the Daylight saving is etc false but the time.zone says it is in effect !

TIG

Perhaps Time.localtime
to your local settings ?
.gm and .utc do similar conversions, the latter converting to UTC [GMT?]

thomthom

This will create a Time object with correct timezome offset from UTC:

<span class="syntaxdefault"><br />model </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model<br />modeltime </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">shadow_info</span><span class="syntaxkeyword">[</span><span class="syntaxstring">'ShadowTime'</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">getutc<br />tz_offset </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">shadow_info</span><span class="syntaxkeyword">[</span><span class="syntaxstring">'TZOffset'</span><span class="syntaxkeyword">]</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">*</span><span class="syntaxdefault"> 60 </span><span class="syntaxkeyword">*</span><span class="syntaxdefault"> 60&nbsp;</span><span class="syntaxkeyword">/&nbsp;-</span><span class="syntaxdefault">1<br />utc_time </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Time</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">at</span><span class="syntaxkeyword">(</span><span class="syntaxdefault"> modeltime</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">to_i </span><span class="syntaxkeyword">+</span><span class="syntaxdefault"> tz_offset </span><span class="syntaxkeyword">)<br />&nbsp;</span><span class="syntaxdefault"></span>

However, need to work out a reliable way to detect the mis-match in case it gets fixed in future SketchUp versions.

thomthom

<span class="syntaxdefault"><br />model </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model<br /><br />modeltime </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">shadow_info</span><span class="syntaxkeyword">[</span><span class="syntaxstring">'ShadowTime'</span><span class="syntaxkeyword">]<br /></span><span class="syntaxdefault">unless modeltime</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">utc</span><span class="syntaxkeyword">?<br /></span><span class="syntaxdefault">  time </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">shadow_info</span><span class="syntaxkeyword">[</span><span class="syntaxstring">'ShadowTime'</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">getutc<br />  tz_offset </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">shadow_info</span><span class="syntaxkeyword">[</span><span class="syntaxstring">'TZOffset'</span><span class="syntaxkeyword">]</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">*</span><span class="syntaxdefault"> 60 </span><span class="syntaxkeyword">*</span><span class="syntaxdefault"> 60&nbsp;</span><span class="syntaxkeyword">/&nbsp;-</span><span class="syntaxdefault">1<br />  modeltime </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Time</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">at</span><span class="syntaxkeyword">(</span><span class="syntaxdefault"> time</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">to_i </span><span class="syntaxkeyword">+</span><span class="syntaxdefault"> tz_offset </span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">end<br /></span>