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Transforming 3D cylinder into cooperable form

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Old   October 11, 2010, 05:29
Default Transforming 3D cylinder into cooperable form
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Mohsin Mukhtar
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Hello

Can anybody explain me how one can use hexahedral/cooper scheme in the case of a cylinder shown in figure.
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Old   October 12, 2010, 02:54
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Maxime Perelli
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extrude the 2 small cylinders in the big one.
Split the big cylinder with both generated volumes.
Now source faces of big cylinder are symmetric and you can apply cooper tool
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Old   October 12, 2010, 05:31
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Thank you Max.

Max Could you please clarify/guide me on the following points.

1. For cooper scheme to work, All non source faces must be mappable or submapple. But in a regular cylinder if the end caps are source faces and side face is "non source" still cooper scheme applies even though side face is neither mappable nor submapple. Could you tell me the reason?

2. In answering to this question you told me that source faces should be symmetric then I can apply cooper tool. Do "source faces" have to be symmetric for cooper scheme? Also if I extrude this then the geomtry will be changed. Is there any virtual splitting technique involved which can make this cooperable while maintaining its shape?

Thank you again Max.
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Old   October 12, 2010, 05:50
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1-In cylinder-case, if your non-top surface isn't mappable or sub-mappable, then you cannot apply cooper (try to mesh it with tri)

2- The source faces don't have to be symmetric. But with this trick you enforce gambit having only pure cooper volumes. The geometry won't change, there are only splits.
But you can mesh your initial domain with cooper, just enforce Gambit having Hex/Wedge Cooper, and choose the 4 top surfaces.
Sans titre.jpg
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