surfaceTransformPoints -rotate

ynos · July 11, 2012, 11:28

Dear Foarmers
I have a problem with the next command: surfaceTransformPoints
I can rotate the stl using
surfaceTransformPoints cad.stl cad-r.stl -yawPitchRoll "(0 -5 0)"
but if i want to rotate the stl from another point different (0,0,0), example rotate the stl from to (0 2.5 0) how i can do it.
Thanks in advanced

wyldckat · July 11, 2012, 16:35

Greetings ynos,You'll have to do it in multiple runs. This is because surfaceTransformPoints (as well as transformPoints)was designed to do basic space transformations, one at a time. Additionally, there is (or at least was) a known bug where for rotating 180 degrees it requires that we do 2 runs of 90 degrees each... or something like that.

So - if I understood you correctly - in your case:

Translate points, so that the new origin coincides with the rotation center you want.
Rotate points, as you intended.
Translate back again, using the opposite vector used for the first step.

Best regards,
Bruno

July 11, 2012, 11:28	surfaceTransformPoints -rotate	#1
ynos Member ynos Join Date: Jan 2011 Posts: 39 Rep Power: 15	Dear Foarmers I have a problem with the next command: surfaceTransformPoints I can rotate the stl using surfaceTransformPoints cad.stl cad-r.stl -yawPitchRoll "(0 -5 0)" but if i want to rotate the stl from another point different (0,0,0), example rotate the stl from to (0 2.5 0) how i can do it. Thanks in advanced mo_na likes this.

July 11, 2012, 16:35		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,981 Blog Entries: 45 Rep Power: 128	Greetings ynos,You'll have to do it in multiple runs. This is because surfaceTransformPoints (as well as transformPoints)was designed to do basic space transformations, one at a time. Additionally, there is (or at least was) a known bug where for rotating 180 degrees it requires that we do 2 runs of 90 degrees each... or something like that. So - if I understood you correctly - in your case: Translate points, so that the new origin coincides with the rotation center you want. Rotate points, as you intended. Translate back again, using the opposite vector used for the first step. Best regards, Bruno peppino and GregNordin like this. __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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