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Question by VesuvianPrime · Aug 02, 2014 at 06:35 PM · boundsrectanimationcurvetangent

How can I get an accurate bounding rect for an AnimationCurve

Hi guys

I'm currently using the following to get my curve bounding rect:

 public static Rect GetBounds(t$$anonymous$$s AnimationCurve extends)
 {
     if (extends.length == 0)
        return new Rect();
 
     float xMin = extends.keys.First().time;
     float xMax = extends.keys.Last().time;
 
     float yMin = extends.keys.First().value;
     float yMax = yMin;
 
     foreach (Keyframe frame in extends.keys)
     {
         if (frame.value < yMin)
             yMin = frame.value;
 
         if (frame.value > yMax)
             yMax = frame.value;
     }
 
     return Rect.MinMaxRect(xMin, yMax, xMax, yMin);
 }

The problem is that t$$anonymous$$s method doesn't consider the tangents of each KeyFrame.

I presume Unity already has some $$anonymous$$dden method for getting the bounding Rect since it is able to focus curves in the curve editor.

Does anyone know how I can get an accurate bounding Rect for my AnimationCurves?

Thanks, Ves

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Answer by VesuvianPrime · Aug 04, 2014 at 04:57 PM

I've ended up using reflection to get at the NormalCurveRenderer class and call GetBounds.

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