1 files changed, 43 insertions, 0 deletions
diff --git a/java/com/android/incallui/answer/impl/classifier/EndPointRatioClassifier.java b/java/com/android/incallui/answer/impl/classifier/EndPointRatioClassifier.java
new file mode 100644
index 000000000..01a35c126
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+++ b/java/com/android/incallui/answer/impl/classifier/EndPointRatioClassifier.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2015 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
+ */
+
+package com.android.incallui.answer.impl.classifier;
+
+/**
+ * A classifier which looks at the ratio between the total length covered by the stroke and the
+ * distance between the first and last point from this stroke.
+ */
+class EndPointRatioClassifier extends StrokeClassifier {
+  public EndPointRatioClassifier(ClassifierData classifierData) {
+    mClassifierData = classifierData;
+  }
+
+  @Override
+  public String getTag() {
+    return "END_RTIO";
+  }
+
+  @Override
+  public float getFalseTouchEvaluation(Stroke stroke) {
+    float ratio;
+    if (stroke.getTotalLength() == 0.0f) {
+      ratio = 1.0f;
+    } else {
+      ratio = stroke.getEndPointLength() / stroke.getTotalLength();
+    }
+    return EndPointRatioEvaluator.evaluate(ratio);
+  }
+}