package org.djutils.draw.point;
   
   import static org.junit.Assert.assertEquals;
   import static org.junit.Assert.assertFalse;
   import static org.junit.Assert.assertNotEquals;
   import static org.junit.Assert.assertTrue;
   import static org.junit.Assert.fail;
   
   import java.awt.geom.Point2D;
  import java.util.Iterator;
  
  import org.djutils.draw.DrawRuntimeException;
  import org.djutils.exceptions.Try;
  import org.junit.Test;
  
  /**
   * OrientedPoint2dTest.java.
   * <p>
   * Copyright (c) 2020-2021 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="https://djutils.org/docs/current/djutils/licenses.html">DJUTILS License</a>.
   * </p>
   * @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   * @author <a href="https://www.tudelft.nl/pknoppers">Peter Knoppers</a>
   */
  public class OrientedPoint2dTest
  {
      /**
       * Test the OrientedPoint2d construction methods.
       */
      @SuppressWarnings("unlikely-arg-type")
      @Test
      public void testOrientedPoint2dConstruction()
      {
          OrientedPoint2d p = new OrientedPoint2d(10.0, -20.0, Math.PI);
          assertEquals("x", 10.0, p.x, 0);
          assertEquals("y", -20.0, p.y, 0);
          assertEquals("dirZ", 3.1415926, p.getDirZ(), 1E-6);
  
          p = new OrientedPoint2d(10.0, -20.0);
          assertEquals("x", 10.0, p.x, 0);
          assertEquals("y", -20.0, p.y, 0);
          assertEquals("dirZ", 0, p.getDirZ(), 0);
          assertEquals("dirZ", 0, p.dirZ, 0);
  
          Point2d p2d = new Point2d(10, -20);
          p = new OrientedPoint2d(p2d, Math.PI);
          assertEquals("x", 10.0, p.x, 0);
          assertEquals("y", -20.0, p.y, 0);
          assertEquals("dirZ", 3.1415926, p.getDirZ(), 1E-6);
          assertEquals("dirZ", 3.1415926, p.dirZ, 1E-6);
  
          try
          {
              new OrientedPoint2d(Double.NaN, 0, 0);
              fail("NaN coordinate should have thrown an IllegalArgumentException");
          }
          catch (IllegalArgumentException iae)
          {
              // Ignore expected exception
          }
  
          try
          {
              new OrientedPoint2d(0, Double.NaN, 0);
              fail("NaN coordinate should have thrown an IllegalArgumentException");
          }
          catch (IllegalArgumentException iae)
          {
              // Ignore expected exception
          }
  
          try
          {
              new OrientedPoint2d(0, 0, Double.NaN);
              fail("NaN coordinate should have thrown an IllegalArgumentException");
          }
          catch (IllegalArgumentException iae)
          {
              // Ignore expected exception
          }
  
          double[] p2Arr = new double[] {5.0, 6.0};
          p = new OrientedPoint2d(p2Arr, Math.PI / 2.0);
          assertEquals(5.0, p.x, 1E-6);
          assertEquals(6.0, p.y, 1E-6);
          assertEquals(3.1415926 / 2.0, p.getDirZ(), 1E-6);
          Point2D.Double p2DD = new Point2D.Double(-0.1, -0.2);
          p = new OrientedPoint2d(p2DD, Math.PI / 4.0);
          assertEquals(-0.1, p.x, 1E-6);
          assertEquals(-0.2, p.y, 1E-6);
          assertEquals(p2DD, p.toPoint2D());
          assertEquals(3.1415926 / 4.0, p.getDirZ(), 1E-6);
  
          Try.testFail(new Try.Execution()
          {
              @Override
              public void execute() throws Throwable
              {
                  new OrientedPoint2d((Point2D.Double) null, 0.0);
             }
         }, "Should throw NPE", NullPointerException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 new OrientedPoint2d((Point2D.Double) null, Math.PI);
             }
         }, "Should throw NPE", NullPointerException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 new OrientedPoint2d(new double[] {}, Math.PI / 2.0);
             }
         }, "Should throw IAE", IllegalArgumentException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 new OrientedPoint2d(new double[] {1.0}, Math.PI / 4.0);
             }
         }, "Should throw IAE", IllegalArgumentException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 new OrientedPoint2d(new double[] {1.0, 2.0, 3.0}, Math.PI);
             }
         }, "Should throw IAE", IllegalArgumentException.class);
 
         // equals and hashCode
         assertTrue(p.equals(p));
         assertEquals(p.hashCode(), p.hashCode());
         OrientedPoint3d p3d = p.translate(1.0, 2.0, 3.0);
         assertFalse(p.equals(p3d));
         assertFalse(p.equals(null));
         assertNotEquals(p3d.hashCode(), p.hashCode());
         assertEquals("translated x", p.x + 1.0, p3d.x, 0.00001);
         assertEquals("translated y", p.y + 2.0, p3d.y, 0.00001);
         assertEquals("translated z", 0 + 3.0, p3d.z, 0.00001);
         assertEquals(Math.PI / 4.0, p.getDirZ(), 1E-6);
         assertTrue(p.equals(p.translate(0.0, 0.0)));
         assertFalse(p.equals(p.translate(1.0, 0.0)));
         assertFalse(p.equals(p.translate(0.0, 1.0)));
         assertFalse(p.equals(p.rotate(0.1)));
 
         // toString
         p = new OrientedPoint2d(10.0, 20.0, Math.PI);
         assertEquals("OrientedPoint2d [x=10.000000, y=20.000000, rot=3.141593]", p.toString());
         assertEquals("OrientedPoint2d [x=10.0, y=20.0, rot=3.1]", p.toString("%.1f"));
         assertEquals("[x=10, y=20, rot=3]", p.toString("%.0f", true));
 
         // epsilonEquals
         OrientedPoint3d p3 = p.translate(0.001, 0.0, 0.0);
         OrientedPoint3d ref = p.translate(0, 0, 0);
         assertTrue(ref.epsilonEquals(p3, 0.09, 0.001));
         assertTrue(p3.epsilonEquals(ref, 0.09, 0.001));
         assertFalse(ref.epsilonEquals(p3, 0.0009, 0.001));
         assertFalse(p3.epsilonEquals(ref, 0.0009, 0.001));
         p3 = p.translate(0.0, 0.001, 0.0);
         assertTrue(ref.epsilonEquals(p3, 0.09, 0.001));
         assertTrue(p3.epsilonEquals(ref, 0.09, 0.001));
         assertFalse(ref.epsilonEquals(p3, 0.0009, 0.001));
         assertFalse(p3.epsilonEquals(ref, 0.0009, 0.001));
         OrientedPoint2d p2 = p.translate(0.001, 0.0);
         assertTrue("all", p.epsilonEquals(p2, 0.09, 0.001));
         assertFalse("dx", p.epsilonEquals(p2, 0.0009, 0.001));
         p2 = p.translate(0.0, 0.001);
         assertTrue("all", p.epsilonEquals(p2, 0.09, 0.001));
         assertFalse("dy", p.epsilonEquals(p2, 0.0009, 0.001));
         p3 = p.translate(0.0, 0.0, 0.001);
         assertTrue(ref.epsilonEquals(p3, 0.09, 0.001));
         assertTrue(p3.epsilonEquals(ref, 0.09, 0.001));
         assertFalse(ref.epsilonEquals(p3, 0.0009, 0.001));
         assertFalse(p3.epsilonEquals(ref, 0.0009, 0.001));
         OrientedPoint2d dp2 = p.rotate(0.001);
         assertTrue(p.epsilonEquals(dp2, 0.09, 0.009));
         assertTrue(dp2.epsilonEquals(p, 0.09, 0.009));
         assertFalse(p.epsilonEquals(dp2, 0.0009, 0.0009));
         assertFalse(dp2.epsilonEquals(p, 0.0009, 0.0009));
     }
 
     /**
      * Test the OrientedPoint2d operators.
      */
     @Test
     public void testOrientedPoint2dOperators()
     {
         OrientedPoint2d p = new OrientedPoint2d(-0.1, -0.2, -Math.PI / 7);
         OrientedPoint2d out = p.abs();
         assertEquals("x", 0.1, out.x, 1E-6);
         assertEquals("y", 0.2, out.y, 1E-6);
         assertEquals("dirZ", -Math.PI / 7, out.getDirZ(), 1E-6);
 
         Iterator<? extends Point2d> i = p.getPoints();
         assertTrue("iterator has one point", i.hasNext());
         assertEquals("iterator returns p", p, i.next());
         assertFalse("iterator does not have another point", i.hasNext());
 
         out = p.neg();
         assertEquals("neg x", 0.1, out.x, 1E-6);
         assertEquals("neg y", 0.2, out.y, 1E-6);
         assertEquals("neg dirZ", Math.PI - Math.PI / 7, out.getDirZ(), 1E-6);
 
         out = p.scale(1.0);
         assertEquals("x", -0.1, out.x, 1E-6);
         assertEquals("y", -0.2, out.y, 1E-6);
         assertEquals("dirZ", -Math.PI / 7, out.getDirZ(), 1E-6);
 
         out = p.scale(10.0);
         assertEquals("10 x", -1.0, out.x, 1E-6);
         assertEquals("10 y", -2.0, out.y, 1E-6);
         assertEquals("dirZ", -Math.PI / 7, out.getDirZ(), 1E-6);
 
         out = p.translate(5.0, -1.0);
         assertEquals("x", 4.9, out.x, 1E-6);
         assertEquals("y", -1.2, out.y, 1E-6);
         assertEquals("dirZ", -Math.PI / 7, out.getDirZ(), 1E-6);
 
         out = p.translate(1.0, 3.0);
         assertEquals("x", 0.9, out.x, 1E-6);
         assertEquals("y", 2.8, out.y, 1E-6);
         assertEquals("dirZ", -Math.PI / 7, out.getDirZ(), 1E-6);
 
         out = p.rotate(-Math.PI / 4);
         assertEquals("x", -0.1, out.x, 1E-6);
         assertEquals("y", -0.2, out.y, 1E-6);
         assertEquals("dirZ", -Math.PI / 7 - Math.PI / 4, out.getDirZ(), 1E-6);
 
         // interpolate
         OrientedPoint2d p1 = new OrientedPoint2d(1.0, 1.0, 0.0);
         OrientedPoint2d p2 = new OrientedPoint2d(5.0, 5.0, Math.PI / 2.0);
         assertEquals("p1 interpolated to p2 at 0", p1, p1.interpolate(p2, 0.0));
         assertEquals("p1 interpolated to p2 at 1", p2, p1.interpolate(p2, 1.0));
         assertEquals("p2 interpolated to p1 at 0", p2, p2.interpolate(p1, 0.0));
         assertEquals("p2 interpolated to p1 at 1", p1, p2.interpolate(p1, 1.0));
         assertEquals("p1 interpolated to itself at 0", p1, p1.interpolate(p1, 0.0));
         assertEquals("interpolated at halfway", new OrientedPoint2d(3.0, 3.0, Math.PI / 4.0), p1.interpolate(p2, 0.5));
 
         // distance
         assertEquals(Math.sqrt(32.0), p1.distance(p2), 0.001);
         assertEquals(32.0, p1.distanceSquared(p2), 0.001);
         // FIXME
         // assertEquals(Math.sqrt(32.0), p1.horizontalDistance(p2), 0.001);
         // assertEquals(32.0, p1.horizontalDistanceSquared(p2), 0.001);
 
         // direction
         // assertEquals(Math.toRadians(45.0), p2.horizontalDirection(), 0.001);
         // assertEquals(Math.toRadians(45.0), p1.horizontalDirection(p2), 0.001);
         // assertEquals(0.0, new OrientedPoint2d(0.0, 0.0, Math.PI / 4.0).horizontalDirection(), 0.001);
 
         // normalize
         OrientedPoint2d pn = p2.normalize();
         assertEquals(1.0 / Math.sqrt(2.0), pn.x, 0.001);
         assertEquals(1.0 / Math.sqrt(2.0), pn.y, 0.001);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 new OrientedPoint2d(0.0, 0.0, Math.PI / 4.0).normalize();
             }
         }, "Should throw DRtE", DrawRuntimeException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 p1.translate(Double.NaN, 2);
             }
         }, "Should throw IAE", IllegalArgumentException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 p1.translate(1, Double.NaN);
             }
         }, "Should throw IAE", IllegalArgumentException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 p1.translate(Double.NaN, 2, 3);
             }
         }, "Should throw IAE", IllegalArgumentException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 p1.translate(1, Double.NaN, 3);
             }
         }, "Should throw IAE", IllegalArgumentException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 p1.translate(1, 2, Double.NaN);
             }
         }, "Should throw IAE", IllegalArgumentException.class);
 
     }
 
     /**
      * Test the OrientedPoint2d operators for NPE.
      */
     @Test
     public void testOrientedPoint2dOperatorsNPE()
     {
         final OrientedPoint2d p1 = new OrientedPoint2d(1.0, 1.0, Math.PI / 4.0);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 p1.interpolate(null, 0.5);
             }
         }, "Should throw NPE", NullPointerException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 p1.distance(null);
             }
         }, "Should throw NPE", NullPointerException.class);
 
         Try.testFail(new Try.Execution()
         {
             @Override
             public void execute() throws Throwable
             {
                 p1.distanceSquared(null);
             }
         }, "Should throw NPE", NullPointerException.class);
 
         // FIXME
         // Try.testFail(new Try.Execution()
         // {
         // @Override
         // public void execute() throws Throwable
         // {
         // p1.horizontalDistance((Point2d) null);
         // }
         // }, "Should throw NPE", NullPointerException.class);
         //
         // Try.testFail(new Try.Execution()
         // {
         // @Override
         // public void execute() throws Throwable
         // {
         // p1.horizontalDistanceSquared((Point3d) null);
         // }
         // }, "Should throw NPE", NullPointerException.class);
 
     }
 
 }