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HDRI Not Keeping Alignment to DayLight

Posted: Tue Jan 29, 2019 2:24 pm
by FAZ
Hello,

I am trying to sync my DayLight to my HDRI. So I rotated my light until it lined up with the sun of HDRI map.
I parented it to the Sky map object I synced it up perfectly, however, the more I rotatate the sky the more the sun looses its alignment and you start to see two suns again? The light seems to rotate at a faster rate than the HDRI.

NOTE: This only works if I restrict the rotation on the Y axis. When I rotate X, it looses sync.

This should not happen correct?

Re: HDRI Not Keeping Alignment to DayLight

Posted: Wed Jan 30, 2019 2:53 pm
by Ron
You need to tie the rotation of those light objects via Xpresso. I did it via H-coordinates of objects and not via north offset value in tags.

Example:
CINEMA_4D_2019-01-30_15-51-48.png

Re: HDRI Not Keeping Alignment to DayLight

Posted: Wed Jan 30, 2019 6:21 pm
by FAZ
Ron wrote:You need to tie the rotation of those light objects via Xpresso. I did it via H-coordinates of objects and not via north offset value in tags.

Example:
CINEMA_4D_2019-01-30_15-51-48.png
Thanks! But could you translate those nodes?

Winkel. H = ?
I tried translating it but could not come up with anything other than "Corner".

I figured out the rest, I think.

Re: HDRI Not Keeping Alignment to DayLight

Posted: Thu Jan 31, 2019 2:06 pm
by Ron
Winkel means Angle. It's the Rotation H.
I have attached my little solution that is doing the job for me. Maybe it is helpful for you or someone else.
I am using mostly HDRI from Darstellungsart where the sun is 180° opposite of daylight. In other cases the rotation H of the daylight needs to be adjusted accordingly.

Ron
Octaviz_Daylight_HDRI_Sync.zip
(6.06 MiB) Downloaded 122 times

Re: HDRI Not Keeping Alignment to DayLight

Posted: Fri Feb 01, 2019 2:31 pm
by FAZ
Very much appreciated, Thank you!