1 files changed, 42 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/core/animation/InterpolationEffect.cpp b/chromium/third_party/WebKit/Source/core/animation/InterpolationEffect.cpp
new file mode 100644
index 00000000000..c03fbab782c
--- /dev/null
+++ b/chromium/third_party/WebKit/Source/core/animation/InterpolationEffect.cpp
@@ -0,0 +1,42 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/animation/InterpolationEffect.h"
+
+namespace WebCore {
+
+PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > InterpolationEffect::getActiveInterpolations(double fraction, double iterationDuration) const
+{
+
+    WillBeHeapVector<RefPtrWillBeMember<Interpolation> >* result = new WillBeHeapVector<RefPtrWillBeMember<Interpolation> >();
+
+    for (size_t i = 0; i < m_interpolations.size(); ++i) {
+        const InterpolationRecord* record = m_interpolations[i].get();
+        if (fraction >= record->m_applyFrom && fraction < record->m_applyTo) {
+            RefPtrWillBeRawPtr<Interpolation> interpolation = record->m_interpolation;
+            double localFraction = (fraction - record->m_start) / (record->m_end - record->m_start);
+            if (record->m_easing)
+                localFraction = record->m_easing->evaluate(localFraction, accuracyForDuration(iterationDuration));
+            interpolation->interpolate(0, localFraction);
+            result->append(interpolation);
+        }
+    }
+
+    return adoptPtrWillBeNoop(result);
+}
+
+void InterpolationEffect::InterpolationRecord::trace(Visitor* visitor)
+{
+    visitor->trace(m_interpolation);
+}
+
+void InterpolationEffect::trace(Visitor* visitor)
+{
+#if ENABLE_OILPAN
+    visitor->trace(m_interpolations);
+#endif
+}
+
+}