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Rotation absolute of an object

Hello everybody,

I’m currently working on a blueprint witch rotates the sun around the world.

http://upload.wikimedia.org/wikipedia/commons/f/f7/Azimuth-Altitude_schematic.svg

For that I calculated two variables called ‘Altitude’ and ‘Azimuth’ like in the picture above.

My Problem is when I update the rotation like in the following picture, I rotate the sun in
its own system. But I need to rotate it relative to the observer.

http://s7.directupload.net/images/140325/ghj2nfr4.jpg

In the last picture I want to show you how it currently is and how it should be.
The red line shows the rotation, if I only update the pitch with the altitude variable.
The green line shows the rotation, if I also update the yaw with the azimuth variable.
The yellow line shows how it should be.

http://s14.directupload.net/images/140325/vgqheudt.jpg

I hope you know what I mean. :wink:
What can I do to fix it?

Thank you!

I not sure, but if you put the pivot of the sun in the middle of the word? perhasp? :confused:

Thank you for your reply.

The problem is that the sun is within the material (Standard Skydome). What means, its position is calculated by the position of my directional light.
So there is no pivot :confused:

Is it a logical error or is there a way I can transform the azimuth?

Somebody else has an idea? It would be really nice.

Sadly I have no idea I am also stuck at that Problem atm moment for my Sun movement.

are you looking on directional light actor component propertys? any clue there?

I’m not quite sure why this isn’t working, yaw should be applied before pitch in Rotators. Is this directional light attached to something else? One thing you can try is creating two Rotators, one for azimuth and one for altitude, and then combine them together using the Combine Rotators node. Then you can try both orders of combination, to see if one ordering solves your problem.

Thank you very much James!

I splitted azimuth and altitude in two Rotators, then combined them “Combine Rotators” and changed the order.

Thanks!