[Solved] How to correctly use TrailRenderer.GetPositions

Question

Good day.

I tried various combinations and i cant find the correct way to write it.. I need to extract all the points of a trail that has been rendered. To store them and use it in other things.

I'm trying this, but its not correct:

 Vector3[] TrailRecorded = GetComponent<TrailRenderer>().GetPositions();

But as i see, the GetPositions return an integrer.. so im little confused. some help?

Thanks and Bye!

Answer 1

Best Answer

Answer by bourriquet · Apr 08, 2018 at 09:06 AM

This functions fills an array that you give as parameter, and returns the number of elements that were put in it. This is a more optimized way than returning an array, because it doesn't require allocating new memory space.

Here is how you should use it:

 const int MAX_POSITIONS = 100;
 Vector3[] TrailRecorded = new Vector3[MAX_POSITIONS];
 
 void YourFunction ()
 {
    int numberOfPositions = GetComponent<TrailRenderer>().GetPositions (TrailRecorded);
 }

Then you can use the numberOfPositions first elements in TrailRecorded as needed. The other elements are either empty or out-of-date.

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tormentoarmagedoom · Apr 08, 2018 at 11:07 AM 0

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Good day. Ahh okk! i was misunderstanding the function. You can also do direct

 TrailGenerator.GetPositions(TrailRecorded);

Thaanks!

[Solved] How to correctly use TrailRenderer.GetPositions

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