KinectOpticalFlowMath constrain calculate count

Unity_2018_Frozen/Assets/Frozen/Frozen.unity

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Unity_2018_Frozen/Assets/KinectOpticalFlow/KinectOpticalFlowMath.cs

@@ -14,6 +14,9 @@ namespace UltraCombos
         float step;
         float stamp = 0.0f;
 
+        [SerializeField]
+        int maxSampleCount = 40000;
+
         [SerializeField]
         int countThreshold = 30;
 
@@ -51,12 +54,15 @@ namespace UltraCombos
             //averageVelocity = Vector3.zero;
             if (home_count > countThreshold)
             {
+                float inc = Mathf.Max((float)home_count / maxSampleCount, 1.0f);
+
                 float div = 1.0f / home_count;
                 float avg_dist = 0.0f;
                 
                 standardDeviation = 0.0f;
-                for (int i = 0; i < home_count; i++)
+                for (float k = 0; k < home_count; k += inc)
                 {
+                    int i = (int)k;
                     var pos_smp = new Vector3(position_samples[i].x, position_samples[i].y, position_samples[i].z);
                     averagePositinon += pos_smp;
                     float dist = new Vector2(pos_smp.x - transform.position.x, pos_smp.z - transform.position.z).magnitude;