Rotate vector around center, python
johnnyjo <[email protected]> Thu, 14 Mar 2019 06:50:25 -0700 (MST)
| Newsgroups | gmane.comp.lib.vtk.user |
|---|---|
| Message-ID | <[email protected]> |
I am using VTK and Python for a project related to my studies. I am given the following point centerOfRotation and the orientation degrees, as well as the vector [1, 0, 0]. Now I want to rotate the vector so it "points" in the direction specified by degrres and then translate it to the point p. centerOfRotation = [314.848717879, 283.085686693, 423.900139245] degrees = [-7.93947167694, -0, 171.098864823] vector = [1, 0, 0] transform = vtk.vtkTransform() transform.Identity() transform.PreMultiply() transform.Translate(centerOfRotation) transform.RotateZ(degrees[2]) transform.RotateX(degrees[0]) transform.RotateY(degrees[1]) transform.Translate(-centerOfRotation[0], -centerOfRotation[1], -centerOfRotation[2]) newPos = [0]*3 transform.TransformPoint(vector, newPos) The centerOfRotation and degrees are extracted from another program, in the other program the second point(newPos) should be beneath the first point(centerOfRotation). But with the code given above, the second point is located above the center of rotation. I hope someone can point me in the right direction. Thanks a lot ! BTW: I am given another information by the other program: YSymmetry=1. I am not really sure what that means though. Note: I am neither a math nor computer student and my math skills are somewhat rusty. Right now I dont have the time to study the math, so if you could point me in the right "coding" direction I would appreciate it :D -- Sent from: http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ Search the list archives at: http://markmail.org/search/?q=vtkusers Follow this link to subscribe/unsubscribe: https://vtk.org/mailman/listinfo/vtkusers