public void Setup()
{
m_Line = new Line(new Point(0.0,
0.0),
new Point(10.0,
10.0));
m_Point = new Point(5.0,
0.0);
m_Calculator = new LineDirectionCalculator
{
Line = m_Line,
Point = m_Point
};
m_Calculator.Calculate();
}
public void LessEpsilonSlopeTest()
{
const double halfEpsilon = SelkieConstants.EpsilonDistance / 2.0;
var line = new Line(new Point(0.0,
0.0),
new Point(halfEpsilon,
halfEpsilon));
var point = new Point(5.0,
0.0);
var calculator = new LineDirectionCalculator
{
Line = line,
Point = point
};
calculator.Calculate();
// todo figure out what needs to be asserted here
}
public void DirectionForLeftReturnsCounterclockwiseTest()
{
var startPoint = new Point(1,
0);
var endPoint = new Point(0,
0);
var line = new Line(startPoint,
endPoint);
var point = new Point(-1,
-1);
var calculator = new LineDirectionCalculator
{
Line = line,
Point = point
};
calculator.Calculate();
Assert.AreEqual(Constants.TurnDirection.Counterclockwise,
calculator.Direction);
}
public void DirectionForZeroTest()
{
var startPoint = new Point(1,
0);
var endPoint = new Point(0,
0);
var line = new Line(startPoint,
endPoint);
var point = new Point(-1,
0);
var calculator = new LineDirectionCalculator
{
Line = line,
Point = point
};
calculator.Calculate();
Assert.AreEqual(Constants.TurnDirection.Unknown,
calculator.Direction);
}