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Question by kag359six · Aug 02, 2012 at 06:37 PM · javascriptdirectionopendoorscomparison

How can I compare directions of objects

I'm want to compare the directions two objects are facing, but I'm not sure how to approach it. And by compare i mean like:

 if(object.direction != otherObject.direction) {

    do something

 }

Basically I want to check if the objects are facing the same direction or opposite directions, and do something based on that.

EDIT: Actually, what would be even better if there is a way to normalize all the objects so their rotation initally begins at zero, since some are at different initial rotations. (however i dont wont the actual rotation to be affected)

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Answer by mikebelotti · Aug 02, 2012 at 06:47 PM

Sounds like you want the dot product. It'll give you a scalar that you can use to compare the objects' directions.

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avatar image kag359six · Aug 03, 2012 at 03:27 PM 0
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will it let me check if objects are facing the same direction? Because so far it seems like it only compares whether an object is in front of, or behind you.

avatar image Mander · Aug 03, 2012 at 04:16 PM 0
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read the info in the link that he placed there. there u can find what u want. reading documentation = win

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Answer by MFKJ · May 12, 2015 at 09:57 AM

use this http://docs.unity3d.com/ScriptReference/Transform-eulerAngles.html

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