[vtkusers] Why is the text of vtkCaptionWidget displayed at the default position no matter what position value I set?

[David Lonie]

Great! Glad we figured it out :)

Dave

On Tue, Oct 25, 2016 at 11:43 AM, Liu_tj <tjlp at netease.com> wrote:

> Hi, David,
>
> rep.SetPosition/rep.SetPosition2 works. Thanks you very much! Cool!
>
> Thanks
> Liu Peng
>
>
>
> 在2016-10-25，"David Lonie" <david.lonie at kitware.com> 写道：
>
> -----原始邮件-----
> *发件人:*"David Lonie" <david.lonie at kitware.com>
> *发送时间:*2016年10月25日 星期二
> *收件人:*"Liu_tj" <tjlp at netease.com>
> *抄送:*"vtkusers" <vtkusers at vtk.org>
> *主题:*Re: Re: Re: [vtkusers] Why is the text of vtkCaptionWidget displayed
> at the default position no matter what position value I set?
>
>
> Hmm...I don't deal with the widget / representation stuff very often, so
> sorry about the dead ends!
>
> It looks like the representation also keeps track of positions and sets
> them on the caption actor, have you tried rep.SetPosition/rep.
> SetPosition2?
>
> On Tue, Oct 25, 2016 at 10:39 AM, Liu_tj <tjlp at netease.com> wrote:
>
>> Hi,David,
>>
>> Yes, I already call rep.SetAnchorPosition(pointer) to set the anchor
>> position, which is also the attachment point.
>>
>> Thanks
>> Liu Peng
>>
>>
>> 在2016-10-25，"David Lonie" <david.lonie at kitware.com> 写道：
>>
>> -----原始邮件-----
>> *发件人:*"David Lonie" <david.lonie at kitware.com>
>> *发送时间:*2016年10月25日 星期二
>> *收件人:*"Liu_tj" <tjlp at netease.com>
>> *抄送:*"vtkusers" <vtkusers at vtk.org>
>> *主题:*Re: Re: [vtkusers] Why is the text of vtkCaptionWidget displayed at
>> the default position no matter what position value I set?
>>
>>
>> Are you also setting the attachment point? From the vtkCaptionActor2D
>> docs:
>>
>>  * To use the caption actor, you normally specify the Position and
>> Position2
>>  * coordinates (these are inherited from the vtkActor2D superclass). (Note
>>  * that Position2 can be set using vtkActor2D's SetWidth() and SetHeight()
>>  * methods.)  Position and Position2 define the size of the caption, and a
>>  * third point, the AttachmentPoint, defines a point that the caption is
>>  * associated with.
>>
>> Also relevant:
>>
>>  * The trickiest part about using this class is setting Position,
>> Position2,
>>  * and AttachmentPoint correctly. These instance variables are
>>  * vtkCoordinates, and can be set up in various ways. In default usage,
>> the
>>  * AttachmentPoint is defined in the world coordinate system, Position is
>> the
>>  * lower-left corner of the caption and relative to AttachmentPoint
>> (defined
>>  * in display coordaintes, i.e., pixels), and Position2 is relative to
>>  * Position and is the upper-right corner (also in display
>>  * coordinates).
>>
>> HTH,
>> Dave
>>
>> On Tue, Oct 25, 2016 at 10:02 AM, Liu_tj <tjlp at netease.com> wrote:
>>
>>> Hi, David,
>>>
>>> I follow your tips. It doesn't work. The text is still displayed at the
>>> default position.
>>>
>>> Thanks
>>> Liu Peng
>>>
>>>
>>>
>>> 在2016-10-24，"David Lonie" <david.lonie at kitware.com> 写道：
>>>
>>>
>>> *收件人:*"Liu_tj" <tjlp at netease.com>
>>> *抄送:*"vtkusers" <vtkusers at vtk.org>
>>> *主题:*Re: [vtkusers] Why is the text of vtkCaptionWidget displayed at
>>> the default position no matter what position value I set?
>>>
>>>
>>> On Sun, Oct 23, 2016 at 11:13 AM, Liu_tj <tjlp at netease.com> wrote:
>>>
>>>> Hi, VTK guys,
>>>>
>>>> When I display a vtkCaptionWidget, I want to set the position of the
>>>> text. So I call the vtkActor2D:;SetPostion() and SetPosition2(), but when
>>>> the widget is displayed, the text is alway at the left bottom corner, why?
>>>> Below is my C# code:
>>>> [snip]
>>>> rep.GetCaptionActor2D().GetTextActor().SetPosition(textPos1[0],
>>>> textPos1[1]);
>>>> rep.GetCaptionActor2D().GetTextActor().SetPosition2(textPos2[0],
>>>> textPos2[1]);
>>>>
>>>
>>> Try just setting the position of the caption actor itself. When the
>>> caption actor renders, it sets the text actor's position. So,
>>>
>>> rep.GetCaptionActor2D().SetPosition(textPos1[0], textPos1[1]);
>>> rep.GetCaptionActor2D().SetPosition2(textPos2[0], textPos2[1]);
>>>
>>> should get you what you want.
>>>
>>> HTH,
>>> Dave
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>
>
>
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