RenderThread animator support

Change-Id: Icf29098edfdaf7ed550bbe9d49e9eaefb4167084

1 files changed, 32 insertions, 0 deletions

diff --git a/libs/hwui/Interpolator.cpp b/libs/hwui/Interpolator.cpp
new file mode 100644
index 000000000000..004ddf5b6c59
--- /dev/null
+++ b/libs/hwui/Interpolator.cpp
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "Interpolator.h"
+
+#include <math.h>
+
+namespace android {
+namespace uirenderer {
+
+Interpolator* Interpolator::createDefaultInterpolator() {
+    return new AccelerateDecelerateInterpolator();
+}
+
+float AccelerateDecelerateInterpolator::interpolate(float input) {
+    return (float)(cosf((input + 1) * M_PI) / 2.0f) + 0.5f;
+}
+
+} /* namespace uirenderer */
+} /* namespace android */