--- /dev/null	2015-04-01 20:20:30.714960462 +0300
+++ new/apps/samples/3DViewer/src/main/java/com/javafx/experiments/utils3d/animation/TickCalculation.java	2015-04-01 21:32:01.853400965 +0300
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2011, 2015, Oracle and/or its affiliates.
+ * All rights reserved. Use is subject to license terms.
+ *
+ * This file is available and licensed under the following license:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the distribution.
+ *  - Neither the name of Oracle Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.javafx.experiments.utils3d.animation;
+
+import javafx.util.Duration;
+
+public class TickCalculation {
+    public static final int TICKS_PER_SECOND = 6000;
+    private static final double TICKS_PER_MILI = TICKS_PER_SECOND / 1000.0;
+    private static final double TICKS_PER_NANO =  TICKS_PER_MILI * 1e-6;
+
+    private TickCalculation() {}
+
+    public static long add(long op1, long op2) {
+        assert (op1 >= 0);
+
+        if (op1 == Long.MAX_VALUE || op2 == Long.MAX_VALUE) {
+            return Long.MAX_VALUE;
+        } else if (op2 == Long.MIN_VALUE) {
+            return 0;
+        }
+
+        if (op2 >= 0) {
+            final long result = op1 + op2;
+            return (result < 0)? Long.MAX_VALUE : result;
+        } else {
+            return Math.max(0, op1 + op2);
+        }
+
+    }
+
+    public static long sub(long op1, long op2) {
+        assert (op1 >= 0);
+
+        if (op1 == Long.MAX_VALUE || op2 == Long.MIN_VALUE) {
+            return Long.MAX_VALUE;
+        } else if (op2 == Long.MAX_VALUE) {
+            return 0;
+        }
+
+        if (op2 >= 0) {
+            return Math.max(0, op1 - op2);
+        } else {
+            final long result = op1 - op2;
+            return result < 0 ? Long.MAX_VALUE : result;
+        }
+
+    }
+
+    public static long fromMillis(double millis) {
+        return Math.round(TICKS_PER_MILI * millis);
+    }
+
+    public static long fromNano(long nano) {
+        return Math.round(TICKS_PER_NANO * nano);
+    }
+
+    public static long fromDuration(Duration duration) {
+        return fromMillis(duration.toMillis());
+    }
+
+    public static long fromDuration(Duration duration, double rate) {
+        return Math.round(TICKS_PER_MILI * duration.toMillis() / Math.abs(rate));
+    }
+
+    public static Duration toDuration(long ticks) {
+        return Duration.millis(toMillis(ticks));
+    }
+
+    public static double toMillis(long ticks) {
+        return ticks / TICKS_PER_MILI;
+    }
+
+
+}