1 files changed, 66 insertions, 0 deletions
diff --git a/src/proguard/gui/splash/SmoothTiming.java b/src/proguard/gui/splash/SmoothTiming.java
new file mode 100644
index 0000000..a985712
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+++ b/src/proguard/gui/splash/SmoothTiming.java
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+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.gui.splash;
+
+/**
+ * This Timing ramps up smoothly from 0 to 1 in a given time interval.
+ *
+ * @author Eric Lafortune
+ */
+public class SmoothTiming implements Timing
+{
+    private final long fromTime;
+    private final long toTime;
+
+
+    /**
+     * Creates a new SmoothTiming.
+     * @param fromTime the time at which the timing starts ramping up from 0.
+     * @param toTime   the time at which the timing stops ramping up at 1.
+     */
+    public SmoothTiming(long fromTime, long toTime)
+    {
+        this.fromTime = fromTime;
+        this.toTime   = toTime;
+    }
+
+
+    // Implementation for Timing.
+
+    public double getTiming(long time)
+    {
+        if (time <= fromTime)
+        {
+            return 0.0;
+        }
+
+        if (time >= toTime)
+        {
+            return 1.0;
+        }
+
+        // Compute the linear interpolation.
+        double timing = (double) (time - fromTime) / (double) (toTime - fromTime);
+
+        // Smooth the interpolation at the ends.
+        return timing * timing * (3.0 - 2.0 * timing);
+    }
+}