Understanding Arithmetic & Vector Data

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I’m trying to understand the math involved in adding and multiplying vector data.

ADDING 2 VECTORS:

If I add 2 vectors
(2,3,1) + (1,1,4) ,
Will that give me
(3,4,5)
?

 Does it add them together?

MULTIPLYING AGAINST A FLOAT

If I multiply a vector (2,3,4) * 3.5 , is it multiplying all 3 numbers against the float individually to give me (7,10.5, 14)?

Again, just trying to understand what’s going on under the hood a little better.

Yes it is. Addition creates a new vector out of all the vectors you are adding. Multiplication extends the vector if the scalar is greater than 1 and reduces it if smaller than 1. At 0, you have a vector zero, less than 0 you invert the direction of the vector. Dividing is the same process. http://docs.unity3d.com/Documentation/Manual/UnderstandingVectorArithmetic.html

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Yes, it is not even an option anymore that I see.

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Yes, .active is deprecated and replaced with .activeInHierarchy [https://docs.unity3d.com/2020.1/Documentation/ScriptReference/GameObject-activeInHierarchy.html][1] [1]: https://docs.unity3d.com/2020.1/Documentation/ScriptReference/GameObject-activeInHierarchy.html

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1 Answer

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Yes that is right. Here’s some more Vectors

Thanks so much for the help!

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This is great, but the thing I'm not clear on is that in the illustrations, Vectors are represented with arrows. This implies they are a line/ray and not a point? Not sure where they get the direction from. It seems like X,Y, or X,Y,Z would just give you a solitary point, not an arrow. Could you explain this?

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@HauntedHotPocket: Don't forget to upvote helpful answers, and to mark successful answers as accepted. I've taken the liberty of doing that for you, here. :)

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Is it always assuming the vector is calculated from your current position (0,0), or (0,0,0)? Sorry for the noobery.

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