Ok, that will probably work for my case. I may just write a simple wrapper
class that gives me easy access to the .origin and .orientation attributes.
I'll use the points3d for the other primitives.
Thanks.
Jason
moorepants.info
+01 530-601-9791
On Mon, Dec 16, 2013 at 5:06 PM, Roan LaPlante <aestri...@gmail.com> wrote:
> The easiest thing to do for cones, spheres, and cylinders is to represent
> them as types of glyphs produced by mlab.points3d. These have positional
> and scale attributes which can easily be modified. Modifying their
> orientation is also possible (i.e. s.actor.actor.orientation) -- but will
> require some additional math translation to get everything aligned
> correctly.
>
> Torii may be a little bit trickier. It may be that the ParametricSource
> is the easiest way to generate a torus and then you can find ways to wrap
> the attributes you need. I'm not sure. If you only need to ever adjust
> them in a gross way with only the parameters you just mentioned, the hack
> of modifying s.children[0].children[0].actor.actor.origin (and
> s.chldren[0].children[0].actor.actor.orientation) might be reasonable.
> There also may be some vtk source that somebody has written that does a
> nicer job that you could just use instead.
>
>
> On Mon, Dec 16, 2013 at 4:36 PM, Jason Moore <moorepa...@gmail.com> wrote:
>
>> Sorry, default isn't to reply all on this list.
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791
>>
>>
>> ---------- Forwarded message ----------
>> From: Jason Moore <moorepa...@gmail.com>
>> Date: Mon, Dec 16, 2013 at 4:34 PM
>> Subject: Re: [MayaVi-users] How to transform and rotate parametric
>> surfaces?
>> To: Roan LaPlante <aestri...@gmail.com>
>>
>>
>> I just want a quick way to draw primitives (tori, spheres, cones,
>> cylinders) in a scene with particular dimensions and be able to rotate and
>> translate them with respect to other objects I've created with mlab.mesh.
>>
>> Ideally I'd like something like:
>>
>> torus = mlab.Torus()
>> torus.center = [2., 3., 4.]
>> torus.orientation = [[0.1, 0.1, 0],
>> [0.2, 0.3, 0],
>> [0, 0, 1]]
>> torus.ring_radius = 5.0
>> torus.cross_section_radius = 0.2
>> mlab.show()
>>
>> Does the tvtk or mayavi api offer anything like this?
>>
>>
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791
>>
>>
>> On Mon, Dec 16, 2013 at 4:21 PM, Roan LaPlante <aestri...@gmail.com>wrote:
>>
>>> Hi Jason,
>>>
>>>
>>> What are you trying to do? In general, mayavi does not have universal
>>> and easily manipulable concepts of what space its visualizations occupy.
>>> Rather, sources occupy some space, and different sources vary extensively
>>> in how easily they are manipulated (mostly because they are not very
>>> featureful sources in vtk, and all mayavi does is wrap the vtk source).
>>>
>>> However, in general if you're unsatisfied with the API that mayavi
>>> provides you to work with your visualizations, its almost always possible
>>> to hack these further and effectively do some vtk programming. For
>>> instance, if you wanted to displace this torus in the x,y,z plane, you
>>> could edit the s.children[0].children[0].actor.actor.origin trait.
>>>
>>>
>>> R
>>>
>>>
>>> On Mon, Dec 16, 2013 at 3:19 PM, Jason Moore <moorepa...@gmail.com>wrote:
>>>
>>>> I've created torus like so:
>>>>
>>>> from mayavi import mlab
>>>> s = mlab.pipeline.parametric_surface()
>>>> s.function = 'torus'
>>>>
>>>> And can change it's geometry like:
>>>>
>>>> s.parametric_function.ring_radius = 10.0
>>>>
>>>> But how do I transform and locate the object in the main coordinate
>>>> system? I can't seem to figure this out...
>>>>
>>>> Jason
>>>> moorepants.info
>>>> +01 530-601-9791
>>>>
>>>>
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>>
>>
>>
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