Implemented and tested to check if a point is inside or outside of a boundary using a ray tracing algorithm. The function is public static for a GPSCoordinate and takes a list of GPSCoordinates and the comparing coordinate. #story[873]

2017-05-11 14:40:24 +12:00
parent 3b2f99b7d7
commit a13899b6a7
2 changed files with 209 additions and 0 deletions
@@ -0,0 +1,121 @@
+package seng302.Model;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static junit.framework.TestCase.assertTrue;
+import static junit.framework.TestCase.assertFalse;
+
+/**
+ * Created by jjg64 on 11/05/17.
+ */
+public class GPSCoordinateTest {
+    List<GPSCoordinate> boundary;
+
+    @Before
+    public void init() {
+        boundary = new ArrayList<>();
+    }
+
+    /**
+     * -------
+     * |     |
+     * |   * |
+     * -------
+     */
+    @Test
+    public void insideSquareTest() {
+        boundary.add(new GPSCoordinate(0, 0));
+        boundary.add(new GPSCoordinate(10, 0));
+        boundary.add(new GPSCoordinate(10, 10));
+        boundary.add(new GPSCoordinate(0, 10));
+
+        GPSCoordinate coordinate = new GPSCoordinate(2, 8);
+        boolean inside = GPSCoordinate.isInsideBoundary(coordinate, boundary);
+        assertTrue(inside);
+    }
+
+    /**
+     *   -------
+     *   |     |
+     * * |     |
+     *   -------
+     */
+    @Test
+    public void outsideSquareTest() {
+        boundary.add(new GPSCoordinate(0, 0));
+        boundary.add(new GPSCoordinate(10, 0));
+        boundary.add(new GPSCoordinate(10, 10));
+        boundary.add(new GPSCoordinate(0, 10));
+
+        GPSCoordinate coordinate = new GPSCoordinate(-2, 8);
+        boolean inside = GPSCoordinate.isInsideBoundary(coordinate, boundary);
+        assertFalse(inside);
+    }
+
+    /**
+     * -------
+     * |     |
+     * |     |
+     * *------
+     */
+    @Test
+    public void edgeSquareTest() {
+        boundary.add(new GPSCoordinate(0, 0));
+        boundary.add(new GPSCoordinate(10, 0));
+        boundary.add(new GPSCoordinate(10, 10));
+        boundary.add(new GPSCoordinate(0, 10));
+
+        GPSCoordinate coordinate = new GPSCoordinate(0, 0);
+        boolean inside = GPSCoordinate.isInsideBoundary(coordinate, boundary);
+        assertFalse(inside);
+    }
+
+    @Test
+    public void insideShapeWithObtuseAnglesTest() {
+        boundary.add(new GPSCoordinate(0, 0));
+        boundary.add(new GPSCoordinate(4, 4));
+        boundary.add(new GPSCoordinate(7, 2));
+        boundary.add(new GPSCoordinate(9, 5));
+        boundary.add(new GPSCoordinate(10, 10));
+        boundary.add(new GPSCoordinate(6, 6));
+        boundary.add(new GPSCoordinate(2, 10));
+
+        GPSCoordinate coordinate = new GPSCoordinate(5, 5);
+        boolean inside = GPSCoordinate.isInsideBoundary(coordinate, boundary);
+        assertTrue(inside);
+    }
+
+    @Test
+    public void outsideShapeWithObtuseAnglesTest() {
+        boundary.add(new GPSCoordinate(0, 0));
+        boundary.add(new GPSCoordinate(4, 4));
+        boundary.add(new GPSCoordinate(7, 2));
+        boundary.add(new GPSCoordinate(9, 5));
+        boundary.add(new GPSCoordinate(10, 10));
+        boundary.add(new GPSCoordinate(6, 6));
+        boundary.add(new GPSCoordinate(2, 10));
+
+        GPSCoordinate coordinate = new GPSCoordinate(4, 3);
+        boolean inside = GPSCoordinate.isInsideBoundary(coordinate, boundary);
+        assertFalse(inside);
+    }
+
+    @Test
+    public void edgeOfShapeWithObtuseAnglesTest() {
+        boundary.add(new GPSCoordinate(0, 0));
+        boundary.add(new GPSCoordinate(4, 4));
+        boundary.add(new GPSCoordinate(7, 2));
+        boundary.add(new GPSCoordinate(9, 5));
+        boundary.add(new GPSCoordinate(10, 10));
+        boundary.add(new GPSCoordinate(6, 6));
+        boundary.add(new GPSCoordinate(2, 10));
+
+        GPSCoordinate coordinate = new GPSCoordinate(2, 10);
+        boolean inside = GPSCoordinate.isInsideBoundary(coordinate, boundary);
+        assertFalse(inside);
+    }
+}