Examples of plotter.LineChecker.require()

plotter.LineChecker.require()
Adds a required line segment. @param x1 X coordinate of end 1 @param y1 Y coordinate of end 1 @param x2 X coordinate of end 2 @param y2 Y coordinate of end 2

    add(.1, .1);
    add(.9, .9);
    CountingGraphics g = paint();


    LineChecker c = new LineChecker();
    c.require(19, 180, 179, 20);
    c.check(g.getLines());
    assertEquals(2, g.getPointCount());
  }

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    add(.1, .1);
    add(.9, .9);
    CountingGraphics g = paint();


    LineChecker c = new LineChecker();
    c.require(179, 180, 19, 20);
    c.check(g.getLines());
    assertEquals(2, g.getPointCount());
  }

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    add(.1, .1);
    add(.9, .9);
    CountingGraphics g = paint();


    LineChecker c = new LineChecker();
    c.require(19, 180, 179, 20);
    c.check(g.getLines());
    assertEquals(2, g.getPointCount());
  }

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    add(.9, .9);
    add(.95, Double.NaN);
    CountingGraphics g = paint();


    LineChecker c = new LineChecker();
    c.require(19, 180, 179, 20);
    c.check(g.getLines());
    assertEquals(2, g.getPointCount());
  }

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    add(.8, .8);
    add(.9, .9);
    CountingGraphics g = paint();


    LineChecker c = new LineChecker();
    c.require(19, 180, 39, 160);
    c.require(159, 40, 179, 20);
    c.check(g.getLines());
    assertEquals(4, g.getPointCount());
  }

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    add(.9, .9);
    CountingGraphics g = paint();


    LineChecker c = new LineChecker();
    c.require(19, 180, 39, 160);
    c.require(159, 40, 179, 20);
    c.check(g.getLines());
    assertEquals(4, g.getPointCount());
  }

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    add(.96, Double.NaN);
    add(.97, Double.NaN);
    CountingGraphics g = paint();


    LineChecker c = new LineChecker();
    c.require(19, 180, 179, 20);
    c.check(g.getLines());
    assertEquals(2, g.getPointCount());
  }

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    CountingGraphics g = paint(new Rectangle(84, 116, 10, 10));


    LineChecker c = new LineChecker();
    c.allow(39, 160, 59, 140);
    c.allow(59, 140, 79, 120);
    c.require(79, 120, 99, 100);
    c.check(g.getLines());
    assertEquals(g.getLines().size() + 1, g.getPointCount());
  }

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    prepend(.4, Double.NaN);
    prepend(.5, Double.NaN);
    CountingGraphics g = paint(new Rectangle(24, 176, 10, 10));


    LineChecker c = new LineChecker();
    c.require(19, 180, 39, 160);
    c.allow(39, 160, 59, 140);
    c.check(g.getLines());
    assertEquals(g.getLines().size() + 1, g.getPointCount());
  }

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    prependDD(.4, Double.NaN);
    prependDD(.5, Double.NaN);
    CountingGraphics g = paint(new Rectangle(24, 176, 10, 10));


    LineChecker c = new LineChecker();
    c.require(19, 180, 39, 160);
    c.allow(39, 160, 59, 140);
    c.check(g.getLines());
    assertEquals(g.getLines().size() + 1, g.getPointCount());
  }

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