Vector.AngleAboutAxis always produces zero angle

1

Apologies in advance- I haven’t used Dynamo in years and I’m pretty rusty…

I’m trying to use Vector.AngleAboutAxis to calculate an angle from coordinates (X & Y are all I’m concerned about- they represent a camera direction from another application)

For some reason, I get a zero angle result- no matter what numbers I put in.
In the below example, I’d expect to get an angle of 45deg (or something like that)

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Any suggestions or input would be appreciated

thank you

Andrew

2

Your second vector has no length, hence produces no angle. Ensure it has at least one aspect with a non-zero value. For example a Y vector would need >0 in the Y degree.

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3

Great, thanks Gavin

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