public void ARayTravelingAtAnAngleJustLargerThanTheRadiusWillMissTheSphere()
{
var sphere = new Sphere {
Postion = Vector3.Zero,
Radius = 1
};
var line = new Ray {
Origin = new Vector3(0, 0, -2),
Direction = new Vector3(-1, 0, 1)
};
var test = sphere.CalculateIntersection(line);
test.Intersects.Should().BeFalse();
}
public void ARayTravelingAwayFromASphereDoesNotIntersect()
{
var sphere = new Sphere {
Postion = Vector3.UnitX,
Radius = 0.5f
};
var line = new Ray {
Origin = Vector3.Zero,
Direction = -Vector3.UnitX
};
var test = sphere.CalculateIntersection(line);
test.Intersects.Should().BeFalse();
}
public void ARayTravelingDownTheOriginIntersectsASphere()
{
var sphere = new Sphere {
Postion = Vector3.UnitX,
Radius = 0.5f
};
var line = new Ray {
Origin = Vector3.Zero,
Direction = Vector3.UnitX
};
var test = sphere.CalculateIntersection(line);
test.Intersects.Should().BeTrue();
test.IntersectionPosition.Should().Be(new Vector3(0.5f, 0, 0));
}
