public void Angle_tan_minus45_equalsMinus1()
{
Double expected = -1.0;
Double actual = (Angle.AngleFactory(-45.0)).tan();
Assert.AreEqual(expected: expected, actual: actual, delta: delta);
}
public void Angle_fromDxDy_quadrant1_1010_equalsMinus45Degrees()
{
Double expected = -45.0;
Double actual = (Angle.AngleFactory(dx: 10.0, dy: -10.0)).getAsDegreesDouble();
Assert.AreEqual(expected: expected, actual: actual, delta: delta);
}
public void Angle_sin_minus150_equalsMinus0_5()
{
Double expected = -0.5;
Double actual = (Angle.AngleFactory(-150.0)).sin();
Assert.AreEqual(expected: expected, actual: actual, delta: delta);
}
public void Vector_rotatingM1_M1vector90degress_yieldsM1_1vectorOfSameLength()
{
Vector firstVec = new Vector(-1.0, -1.0, null);
var firstAngle = firstVec.DirectionHorizontal;
Vector secondVec = firstVec.rotateCloneAboutZ(Angle.AngleFactory(-90.0));
Assert.AreEqual(expected: firstVec.Length, actual: secondVec.Length, delta: 0.00001);
Assert.AreEqual(expected: firstVec.Azimuth.getAsDegreesDouble() - 90.0, actual: secondVec.Azimuth.getAsDegreesDouble(), delta: 0.00001);
}
public void BoundingBox_20_20Rotated45degrees_yields28_28()
{
var bb = new BoundingBox(-10, -10, 10, 10);
var aspectVector = bb.getAsVectorLLtoUR();
bb.setFrom_2dOnly(new Point(0, 0), 20, 20, Angle.AngleFactory(45.0));
aspectVector = bb.getAsVectorLLtoUR();
Double expectedURx = 14.142136; Double expectedURy = 14.142136;
Double actualURx = bb.upperRightPt.x;
Double actualURy = bb.upperRightPt.y;
Assert.AreEqual(expected: expectedURx, actual: actualURx, delta: 0.00001);
Assert.AreEqual(expected: expectedURy, actual: actualURy, delta: 0.00001);
Assert.AreEqual(expected: aspectVector.Length, actual: 40.0, delta: 0.00001);
Assert.AreEqual(expected: aspectVector.Azimuth.getAsDegreesDouble(),
actual: 45.0, delta: 0.00001);
}
