git-svn-id: http://zxing.googlecode.com/svn/trunk@6 59b500cc-1b3d-0410-9834-0bbf25fbcc57

[zxing.git] / core / src / com / google / zxing / qrcode / detector / FinderPattern.java

diff --git a/core/src/com/google/zxing/qrcode/detector/FinderPattern.java b/core/src/com/google/zxing/qrcode/detector/FinderPattern.java
new file mode 100644 (file)
index 0000000..11e0337
--- /dev/null
+++ b/core/src/com/google/zxing/qrcode/detector/FinderPattern.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2007 Google Inc.
+ *
+ * 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.google.zxing.qrcode.detector;
+
+import com.google.zxing.ResultPoint;
+
+/**
+ * @author srowen@google.com (Sean Owen)
+ */
+public final class FinderPattern implements ResultPoint {
+
+  private final float posX;
+  private final float posY;
+  private final float estimatedModuleSize;
+  private int count;
+
+  FinderPattern(float posX, float posY, float estimatedModuleSize) {
+    this.posX = posX;
+    this.posY = posY;
+    this.estimatedModuleSize = estimatedModuleSize;
+    this.count = 1;
+  }
+
+  public float getX() {
+    return posX;
+  }
+
+  public float getY() {
+    return posY;
+  }
+
+  float getEstimatedModuleSize() {
+    return estimatedModuleSize;
+  }
+
+  int getCount() {
+    return count;
+  }
+
+  void incrementCount() {
+    this.count++;
+  }
+
+  boolean aboutEquals(float moduleSize, float i, float j) {
+    return Math.abs(i - posY) <= moduleSize &&
+           Math.abs(j - posX) <= moduleSize &&
+           (Math.abs(moduleSize - estimatedModuleSize) <= 1.0f ||
+            Math.abs(moduleSize - estimatedModuleSize) / estimatedModuleSize <= 0.1f);
+  }
+
+}