1 files changed, 74 insertions, 0 deletions
diff --git a/cc/timing_function.cc b/cc/timing_function.cc
new file mode 100644
index 0000000..3a4ecd4
--- /dev/null
+++ b/cc/timing_function.cc
@@ -0,0 +1,74 @@
+// Copyright 2012 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 "CCTimingFunction.h"
+
+namespace {
+const double epsilon = 1e-6;
+} // namespace
+
+namespace cc {
+
+CCTimingFunction::CCTimingFunction()
+{
+}
+
+CCTimingFunction::~CCTimingFunction()
+{
+}
+
+double CCTimingFunction::duration() const
+{
+    return 1.0;
+}
+
+scoped_ptr<CCCubicBezierTimingFunction> CCCubicBezierTimingFunction::create(double x1, double y1, double x2, double y2)
+{
+    return make_scoped_ptr(new CCCubicBezierTimingFunction(x1, y1, x2, y2));
+}
+
+CCCubicBezierTimingFunction::CCCubicBezierTimingFunction(double x1, double y1, double x2, double y2)
+    : m_curve(x1, y1, x2, y2)
+{
+}
+
+CCCubicBezierTimingFunction::~CCCubicBezierTimingFunction()
+{
+}
+
+float CCCubicBezierTimingFunction::getValue(double x) const
+{
+    UnitBezier temp(m_curve);
+    return static_cast<float>(temp.solve(x, epsilon));
+}
+
+scoped_ptr<CCAnimationCurve> CCCubicBezierTimingFunction::clone() const
+{
+    return make_scoped_ptr(new CCCubicBezierTimingFunction(*this)).PassAs<CCAnimationCurve>();
+}
+
+// These numbers come from http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag.
+scoped_ptr<CCTimingFunction> CCEaseTimingFunction::create()
+{
+    return CCCubicBezierTimingFunction::create(0.25, 0.1, 0.25, 1).PassAs<CCTimingFunction>();
+}
+
+scoped_ptr<CCTimingFunction> CCEaseInTimingFunction::create()
+{
+    return CCCubicBezierTimingFunction::create(0.42, 0, 1.0, 1).PassAs<CCTimingFunction>();
+}
+
+scoped_ptr<CCTimingFunction> CCEaseOutTimingFunction::create()
+{
+    return CCCubicBezierTimingFunction::create(0, 0, 0.58, 1).PassAs<CCTimingFunction>();
+}
+
+scoped_ptr<CCTimingFunction> CCEaseInOutTimingFunction::create()
+{
+    return CCCubicBezierTimingFunction::create(0.42, 0, 0.58, 1).PassAs<CCTimingFunction>();
+}
+
+} // namespace cc