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diff --git a/src/gleem/ManipPartTwoWayArrow.java b/src/gleem/ManipPartTwoWayArrow.java
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+++ b/src/gleem/ManipPartTwoWayArrow.java
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+/*
+ * gleem -- OpenGL Extremely Easy-To-Use Manipulators.
+ * Copyright (C) 1998-2003 Kenneth B. Russell ([email protected])
+ *
+ * Copying, distribution and use of this software in source and binary
+ * forms, with or without modification, is permitted provided that the
+ * following conditions are met:
+ *
+ * Distributions of source code must reproduce the copyright notice,
+ * this list of conditions and the following disclaimer in the source
+ * code header files; and Distributions of binary code must reproduce
+ * the copyright notice, this list of conditions and the following
+ * disclaimer in the documentation, Read me file, license file and/or
+ * other materials provided with the software distribution.
+ *
+ * The names of Sun Microsystems, Inc. ("Sun") and/or the copyright
+ * holder may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS," WITHOUT A WARRANTY OF ANY
+ * KIND. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, NON-INTERFERENCE, ACCURACY OF
+ * INFORMATIONAL CONTENT OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. THE
+ * COPYRIGHT HOLDER, SUN AND SUN'S LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL THE
+ * COPYRIGHT HOLDER, SUN OR SUN'S LICENSORS BE LIABLE FOR ANY LOST
+ * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGES. YOU ACKNOWLEDGE THAT THIS SOFTWARE IS NOT
+ * DESIGNED, LICENSED OR INTENDED FOR USE IN THE DESIGN, CONSTRUCTION,
+ * OPERATION OR MAINTENANCE OF ANY NUCLEAR FACILITY. THE COPYRIGHT
+ * HOLDER, SUN AND SUN'S LICENSORS DISCLAIM ANY EXPRESS OR IMPLIED
+ * WARRANTY OF FITNESS FOR SUCH USES.
+ */
+
+package gleem;
+
+import java.util.*;
+
+import gleem.linalg.*;
+
+/** Piece of geometry defining a two-way arrow, used in Translate1 and
+    Translate2 manips. */
+
+public class ManipPartTwoWayArrow extends ManipPartTriBased {
+  private static final Vec3f[] vertices = {
+    // Left tetrahedron
+    new Vec3f(-1.0f, 0.0f, 0.0f),
+    new Vec3f(-0.666666f, 0.166666f, 0.166666f),
+    new Vec3f(-0.666666f, -0.166666f, 0.166666f),
+    new Vec3f(-0.666666f, -0.166666f, -0.166666f),
+    new Vec3f(-0.666666f, 0.166666f, -0.166666f),
+
+    // Box at center
+    new Vec3f(-0.666666f, 0.041666f, 0.0416666f),
+    new Vec3f(-0.666666f, -0.041666f, 0.0416666f),
+    new Vec3f(-0.666666f, -0.041666f, -0.0416666f),
+    new Vec3f(-0.666666f, 0.041666f, -0.0416666f),
+    new Vec3f(0.666666f, 0.041666f, 0.0416666f),
+    new Vec3f(0.666666f, -0.041666f, 0.0416666f),
+    new Vec3f(0.666666f, -0.041666f, -0.0416666f),
+    new Vec3f(0.666666f, 0.041666f, -0.0416666f),
+
+    // Right tetrahedron
+    new Vec3f(0.666666f, 0.166666f, 0.166666f),
+    new Vec3f(0.666666f, 0.166666f, -0.166666f),
+    new Vec3f(0.666666f, -0.166666f, -0.166666f),
+    new Vec3f(0.666666f, -0.166666f, 0.166666f),
+    new Vec3f(1.0f, 0.0f, 0.0f),
+  };
+
+  private static final int[] vertexIndices = {
+    // Left tetrahedron
+    1, 0, 2,
+    2, 0, 3,
+    3, 0, 4,
+    4, 0, 1,
+    1, 2, 3,
+    1, 3, 4,
+
+    // Box
+    5, 7, 6,   // left face
+    5, 8, 7,
+    5, 6, 10,  // front face
+    5, 10, 9,
+    6, 7, 11,  // bottom face
+    6, 11, 10,
+    7, 8, 12,  // back face
+    7, 12, 11,
+    8, 5, 9,   // top face
+    8, 9, 12,
+    9, 10, 11, // right face
+    9, 11, 12,
+
+    // Right tetrahedron
+    13, 14, 15,
+    13, 15, 16,
+    17, 14, 13,
+    17, 15, 14,
+    17, 16, 15,
+    17, 13, 16
+  };
+
+  private static Vec3f[] normals  = null;
+  private static int[] normalIndices = null;
+
+  public ManipPartTwoWayArrow() {
+    super();
+
+    if (normals == null) {
+      NormalCalc.NormalInfo normInfo =
+        NormalCalc.computeFacetedNormals(vertices, vertexIndices, true);
+      normals = normInfo.normals;
+      normalIndices = normInfo.normalIndices;
+    }
+
+    setVertices(vertices);
+    setVertexIndices(vertexIndices);
+    setNormals(normals);
+    setNormalIndices(normalIndices);
+  }
+}