--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Orchestland/Assets/LeapMotion/DemoResources/Scripts/CubeWave.cs	Fri Jul 17 23:09:20 2015 +0900
@@ -0,0 +1,89 @@
+/******************************************************************************\
+* Copyright (C) Leap Motion, Inc. 2011-2014.                                   *
+* Leap Motion proprietary. Licensed under Apache 2.0                           *
+* Available at http://www.apache.org/licenses/LICENSE-2.0.html                 *
+\******************************************************************************/
+
+using UnityEngine;
+using System.Collections;
+
+public class CubeWave : MonoBehaviour {
+
+  private const float BRIGHTNESS_SCALE = 5.0f;
+  private const float BASE_BRIGHTNESS = 0.2f;
+
+  public int gridWidth = 25;
+  public int gridHeight = 25;
+  public float cellWidth = 1.0f;
+  public float cellHeight = 1.0f;
+  public float springConstant = 200.0f;
+  public float damping = 0.01f;
+
+  public Transform model;
+  public Light lowGlow;
+  public Light highGlow;
+  public Color lowColor;
+  public Color highColor;
+
+  Transform[,] cube_grid_;
+
+  void Start() {
+    cube_grid_ = new Transform[gridHeight + 2, gridWidth + 2];
+    for (int r = 0; r < gridHeight + 2; ++r) {
+      for (int c = 0; c < gridWidth + 2; ++c) {
+        cube_grid_[r, c] = transform;
+      }
+    }
+
+    float center_x = gridWidth * cellWidth / 2.0f;
+    float center_y = gridHeight * cellHeight / 2.0f;
+
+    // Setup the cube grid.
+    for (int r = 1; r <= gridHeight; ++r) {
+      for (int c = 1; c <= gridWidth; ++c) {
+        Vector3 location = new Vector3(c * cellWidth - center_x, 0, r * cellHeight - center_y);
+        cube_grid_[r, c] = Instantiate(model, transform.position + location,
+                                       transform.rotation * model.transform.rotation) as Transform;
+        cube_grid_[r, c].parent = transform;
+      }
+    }
+  }
+
+  void Update() {
+    float low_total_light = 0.0f;
+    float high_total_light = 0.0f;
+
+    for (int r = 1; r <= gridHeight; ++r) {
+      for (int c = 1; c <= gridWidth; ++c) {
+
+        // Discrete wave equation with damping.
+        float neighbor_sum = (cube_grid_[r - 1, c].position.y + cube_grid_[r, c - 1].position.y +
+                              cube_grid_[r + 1, c].position.y + cube_grid_[r, c + 1].position.y);
+
+        float delta_from_rest = 0.25f * neighbor_sum - cube_grid_[r, c].position.y;
+        cube_grid_[r, c].GetComponent<Rigidbody>().AddForce(springConstant * Vector3.up * delta_from_rest);
+        cube_grid_[r, c].GetComponent<Rigidbody>().velocity *= (1 - damping);
+
+        // Set color of cube and add to glow amount based on current height.
+        float delta_zero = transform.position.y - cube_grid_[r, c].position.y;
+        float brightness = BASE_BRIGHTNESS +
+                           BRIGHTNESS_SCALE * Mathf.Log(1 + 0.2f * delta_zero);
+
+        if (brightness < 0) {
+          cube_grid_[r, c].GetComponent<Renderer>().material.SetColor("_Color", highColor * (-brightness));
+          high_total_light -= brightness / (gridHeight * gridWidth);
+        }
+        else {
+          cube_grid_[r, c].GetComponent<Renderer>().material.SetColor("_Color", lowColor * brightness);
+          low_total_light += brightness / (gridHeight * gridWidth);
+        }
+      }
+    }
+
+    // Set glow amount.
+    if (lowGlow != null)
+      lowGlow.intensity = low_total_light;
+    if (highGlow != null)
+      highGlow.intensity = high_total_light;
+  }
+}