UnityEngine.AnimationCurve.Evaluate C# (CSharp) Method

        public extern float Evaluate(float time);
        /// <summary>

    public static float evaluateProbabilityCurve(AnimationCurve curve, int sliceCount)
    {
        /*
        allows you to use animationCurves as probability curves.

        uses domain 0-1
        any range

        slices the domain into sliceCount pieces. the odds of returning the x value from a slice
        is linearly proportional to the y value on the curve
        */
        float total = 0;
        float stepSize = 1 / (float)sliceCount;
        for (float x=0; x<=1; x+=stepSize) {
            total += curve.Evaluate (x);
        }

        float rand = ((float)Random.Range (0, total * 1000)) / 1000;
        for (float x=0; x<=1; x+=stepSize) {
            float y = curve.Evaluate (x);
            if (y > 0)
                rand -= y;

            if (rand < 0)
                return x;
        }

        Debug.Log ("warning: evaluateProbabilityCurve never evaluated. returning 1");
        return 1f;
    }