Package chunmap.model.elem

Examples of chunmap.model.elem.Line

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   * {@link chunmap.model.elem.Line#getY(double)} 的测试方法。
   */
  @Test
  public void testGetY() {
    // y=4x+1
    Line l1 = new Line(4, 1);
    double y1 = l1.getY(2);
    assertTrue(y1 == 9);
  }
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  @Test
  public void testGetX() {
    // y=4x+1;
    CPoint p1 = new Coordinate2D(1, 5);
    CPoint p2 = new Coordinate2D(-1, -3);
    Line l1 = new Line(p1, p2);
    double x1 = l1.getX(9);
    assertTrue(MyDouble.approximateEquals(x1, 2));
  }
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  @Test
  public void testCritical() {
    // y=5;
    CPoint p1 = new Coordinate2D(1, 5);
    CPoint p2 = new Coordinate2D(-1, 5);
    Line l1 = new Line(p1, p2);
    double x1 = l1.getX(9);
    String s = x1 + "";
    assertTrue(s.equals("NaN"));

    double y1 = l1.getY(10);
    assertTrue(MyDouble.approximateEquals(y1, 5));

  }
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  @Test
  public void testCritical2() {
    // x=1
    CPoint p1 = new Coordinate2D(1, 5);
    CPoint p2 = new Coordinate2D(1, 0.5);
    Line l1 = new Line(p1, p2);
    double x1 = l1.getX(9);
    assertTrue(MyDouble.approximateEquals(x1, 1));

    double y1 = l1.getY(10);
    assertTrue(Double.isNaN(y1));
  }
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  @Test
  public void testCritical3() {
    // x=1
    CPoint p1 = new Coordinate2D(1, 5);
    Line l1 = new Line(p1, Double.NEGATIVE_INFINITY);
    double x1 = l1.getX(9);
    assertTrue(MyDouble.approximateEquals(x1, 1));

    double y1 = l1.getY(10);
    assertTrue(Double.isNaN(y1));
  }
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    assertTrue(Double.isNaN(y1));
  }

  @Test
  public void testCritical4() {
    Line l1 = new Line(Double.POSITIVE_INFINITY, 1);

    // System.out.println(l1.getK());
    double x1 = l1.getX(9);
    assertTrue(MyDouble.approximateEquals(x1, 1));

    double y1 = l1.getY(10);
    assertTrue(Double.isNaN(y1));
  }
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  @Test
  public void testGetVerticalK() {
    // y=4x+1;
    Coordinate2D p1 = new Coordinate2D(1, 5);
    Coordinate2D p2 = new Coordinate2D(-1, -3);
    Line l1 = new Line(p1, p2);
    double k = l1.getVerticalK();
    assertTrue(MyDouble.approximateEquals(k, -0.25));
  }
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  @Test
  public void testCrossCoordinate2D() {
    // y=4x+1;
    CPoint p1 = new Coordinate2D(1, 5);
    CPoint p2 = new Coordinate2D(-1, -3);
    Line l1 = new Line(p1, p2);

    // y=x-1;
    Line l2 = new Line(1, -1);
    CPoint p = new Coordinate2D(-2d / 3d, (-2d / 3d) - 1);
    assertTrue(p.equals(l1.crossPoint(l2)));
    assertTrue(p.equals(l2.crossPoint(l1)));
  }
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  @Test
  public void testCriticalCrossCoordinate2D() {
    // y=4x+1;
    CPoint p1 = new Coordinate2D(1, 5);
    CPoint p2 = new Coordinate2D(1, 3);
    Line l1 = new Line(p1, p2);

    // y=x-1;
    Line l2 = new Line(1, -1);
    CPoint p = new Coordinate2D(1, 0);
    assertTrue(p.equals(l1.crossPoint(l2)));
    assertTrue(p.equals(l2.crossPoint(l1)));
  }
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  }

  @Test
  public void testDistance() {
    // y=x+1;
    Line l = new Line(1, 1);
    CPoint p = new Coordinate2D(0, 0);
    double d = l.distance(p);
    assertTrue(MyDouble.approximateEquals(Math.sqrt(2) / 2d, d));
  }
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Related Classes of chunmap.model.elem.Line

  • chunmap.model.algorithm.LineSegmentAlgorithm
  • chunmap.model.coord.Coordinate2D
  • chunmap.model.coord.CPoint
  • chunmap.model.elem.LineTest
  • chunmap.model.operate.buffer.LineBuffer
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