public void VerifyAngleForRightSideLessThan90()
{
const double expected = Math.PI * 1.5;
const double initialAngle = 0;
var result = RadiansHelper.AngleForRightSide(initialAngle);
Assert.AreEqual(expected, result, "Unexpected value for RHS angle.");
}
public void VerifyAngleForLeftSideLessThan270()
{
const double expected = Math.PI;
const double initialAngle = Math.PI / 2;
var result = RadiansHelper.AngleForLeftSide(initialAngle);
Assert.AreEqual(expected, result, "Unexpected value for LHS angle.");
}
public void VerifyAngleForSideLeft()
{
const double expected = 0;
const double initialAngle = Math.PI * 1.5;
var result = RadiansHelper.AngleForSide(initialAngle, SidesOfCentre.Left);
Assert.AreEqual(expected, result, "Unexpected value for LHS angle.");
}
public void VerifyAngleForSideRight()
{
const double expected = Math.PI / 2;
const double initialAngle = Math.PI;
var result = RadiansHelper.AngleForSide(initialAngle, SidesOfCentre.Right);
Assert.AreEqual(expected, result, "Unexpected value for RHS angle.");
}
public void VerifyAnglesAreEqualAddTolerance()
{
const double tolerance = RadiansHelper.ANGLE_TOLERANCE / 2;
const double angle1 = Math.PI;
const double angle2 = angle1 + tolerance;
var result = RadiansHelper.AnglesAreEqual(angle1, angle2);
Assert.True(result, "Angles should be equal.");
}
public void VerifyAnglesAreNotEqualMinusTolerance()
{
const double tolerance = RadiansHelper.ANGLE_TOLERANCE * 1.5;
const double angle1 = Math.PI;
const double angle2 = angle1 - tolerance;
var result = RadiansHelper.AnglesAreEqual(angle1, angle2);
Assert.False(result, "Angles should not be equal.");
}
public void VerifyAngleForInvalidSide()
{
const double initialAngle = Math.PI * 1.5;
bool result;
try
{
RadiansHelper.AngleForSide(initialAngle, (SidesOfCentre)999);
result = false;
}
catch (ArgumentOutOfRangeException)
{
result = true;
}
Assert.IsTrue(result, "Side of centre should be invalid.");
}
public static double AngleFromCurveToForSide(this Curve curve, SidesOfCentre side)
{
double curveAngle;
switch (curve)
{
case Line line:
curveAngle = line.Angle;
break;
case Arc arc:
var startPoint = new Point2d(arc.StartPoint.X, arc.StartPoint.Y);
var arcCentre = new Point2d(arc.Center.X, arc.Center.Y);
var startVector = arcCentre.GetVectorTo(startPoint);
curveAngle = arc.Clockwise() ? startVector.Angle - RadiansHelper.DEGREES_90 : startVector.Angle + RadiansHelper.DEGREES_90;
break;
default:
throw new ArgumentOutOfRangeException(nameof(curve), curve, null);
}
return(RadiansHelper.AngleForSide(curveAngle, side));
}