Frank Andernach created MATH-1157:
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Summary: problem with the rotation
Key: MATH-1157
URL: https://issues.apache.org/jira/browse/MATH-1157
Project: Commons Math
Issue Type: Bug
Affects Versions: 3.3
Environment: Windows 7, Eclipse, Java SE 1.7
Reporter: Frank Andernach
Fix For: 3.4
Hello,
this is my problem:
myAngle = 0.3490658503988659
The angle is created with FastMath.toRadians(20).
myRotation = new Rotation(RotationOrder.XYZ, 0, 0, myAngle);
if I use this on my Vector3D myVector = new Vector3D(4,4,4) with
myRotation.applyInverseTo(myVector) I'm get the result
x = 5.1268510564463075
y = 2.390689909840958
z = 3.999999999999999
Im working with double values, but after the rotation just around the axis z,
the z value of my vector shouldn't have changed, but it does. Maybe it is not a
bug but a wrong result after a simple rotation, or did I use the rotation in a
wrong way?
Best regards
Frank
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