I have two objects, and I’m trying to calculate the size of the difference between the direction they are facing, individually broken out in local axes x, y and z. I’ve already tried: Delta rotators: Works fine in yaw and roll, but in pitch when it goes past -/+ 90 the magnitude starts to get sma…

[image] [image] DavidOConnor: individually broken out in local axes x, y and z. Not clear what this could mean besides roll, pitch and yaw.

If you want the difference between two numbers it’s just the absolute value of A - B. float diff = FMath::Abs(ValueA - ValueB); You can also subtract vectors to find a direction + distance between start and target. TargetVector - StartVector Finally you could just measure the length / size of a …

Thanks @Roy_Wierer.Seda145 , but I do understand basic vector maths. I’m looking for something a bit more specific.

Thanks @pezzott1 , quaternions to rotators will probably get me over the +/- 90 degrees pitch issue. I’ll try it right now. Ideally though, I’m looking to keep the measure in vector format, with an output similar to a dot product. So, ideally, I mean a vector broken into measuring the x, y, and z o…

Try getting forward vector from the resulting rotator. Keep in mind that a vector will only count for 1 of the 3 dimensions. So if all you are after is a direction then the +/-90 pitch or any other conversion to avoid gimbal lock shouldn’t matter.

@pezzott1 Nice idea! I thought the forward vector would work, and the output format of a unit vector is ideal… Regrettably though, it isn’t cleanly splitting x, y, z values into local magnitudes. So to test it if I move the player cleanly only in one axis, the direction difference caused by camera…

Can you show an image of the scene and a short description how it should work?

@pezzott1 Yes, I think this will help a lot… Here is how I’m setting the position of the Spring Arm (in rotators for the moment). Essentially, it’s a manual version of Spring Arm lag… split by axis… and also dynamic. [image] My goal is to have a dynamic InterpSpeed for each individual RinterpTo …

Can the camera go upside-down and roll?

Fantastic @pezzott1 , excellent question. Its kind of like Iron Man flying. Yes, the camera can go fully upside down and the player can fly this way too. At this point, with a keypress, the player would normally instigate a roll (using a timeline to drive control rotation roll) to level off and re-or…