Find relative 3D position between 2 image targets in Unity

Question

Hi

I have a unity3D scene with two image targets. How do I find the relative positions between the two image targets once the targets have been found?

Thanks

Mark

Answer 1

Hello,

Do you mean that you need to display the distance between the two image targets?

Comments

Hi

thanks for the response.

I want to be able to know the relative positions between the two target images once they have been found so that I can move a model from one target image towards the second target image in code.

Answer 2

Calculate the position difference between the transforms of target A and target B.

Transform targetA, targetB;

Vector3 posDifferenceFromAtoB = targetB.position - targetA.position;

By normalizing the posDifference you may get the direction vector from A to B.

If you are not familiar with Unity API, check here : https://docs.unity3d.com/Manual/index.html

If you are not familiar with some essential mathmatics for (3D) game development, maybe you'd better study basic Linear Algebra first, like this one : https://www.youtube.com/watch?v=fNk_zzaMoSs

Comments

Hi

thanks for your answer. Not really what I am looking for as I am more interested in the internal  workings of ImageTargetBehaviour and ImageTarget classes and how to access the relevant gameobjects and transforms. You have have given me a beginners guide to computer graphics and Unity which I don't need.  I have now found an answer. Thanks Mark

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Ha, but that's what you've asked!

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Not quite. You responded about Unity.  I was asking about TargetImage and how it works with Unity. Thanks