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Camera pan according to roll rotation

Hi everybody!

I have a simple camera, it follows objects in the world. Sometimes, my camera is upside down, or 3/4 right. The roll (X) changes all the time.

On this camera, I have a simple pan blueprint (yaw and pitch). It works when the camera is straight (roll = 0). But, the pan is inverted when the camera is upside down. Normal so far.

Here, a wonderful sketch! alt text

My question is, how to keep my yaw and pitch (Z and Y) always in the right direction, related to the roll (X) ? (-1 and 1 always at left and right or top and bot, and not inverted).

Thank you very much for help!

Product Version: UE 4.17
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asked Oct 19 '17 at 04:15 PM in Blueprint Scripting

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Goetheus
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avatar image Goetheus Oct 23 '17 at 07:28 AM

No idea? I should have listened to my vectors classes on high school...

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if you use add rotation to your actor , user add relative rotation instead of add world rotation and also you can ignore roll rotation on your actor too

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answered Oct 24 '17 at 06:13 AM

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Siahpoosh
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avatar image Goetheus Oct 24 '17 at 09:57 AM

You're right! I don't know why I tried to do this with a "set", plus a "world" rotation x) Add local rotation for actor is the best way to achieve what I was looking for.

Thank you!

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