[vtkusers] VTK 2D Control Points example

[Gishara Indeewarie]

I have used vtkCharts. I need to give the user the ability to change the
position of some points.
(like in the example)
Can I do it with vtkCharts?
Thanks.

On Tue, Jun 26, 2012 at 5:37 PM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:

> If you are using vtkCharts for plotting then it can handle 2D plots just
> by mentioning (X,Y).
>
> Are you using vtkCharts?
>
>
>
>
> On Tue, Jun 26, 2012 at 1:04 PM, Gishara Indeewarie <gish.777 at gmail.com>wrote:
>
>> ok.Thanks. Is this true to do 2d plot also?
>> Because my problem is that I only need to show the 2D one.
>>  Users should not be given the ability to rotate the contour.
>> Is there any way of adding control points to a 2D plot?
>> Thanks again for the help.
>>
>> On Tue, Jun 26, 2012 at 5:30 PM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:
>>
>>> Any point in 3D requires (X,Y,Z). You can't define a contour with just
>>> (X,Y) values.
>>>
>>> Consider a circle with 10 mm radius, you may be happy with the (X,Y)
>>> values but VTK should be told where it should be positioned in the Z axis.
>>>
>>>
>>> Jothy
>>>
>>>
>>> On Tue, Jun 26, 2012 at 12:47 PM, Gishara Indeewarie <gish.777 at gmail.com
>>> > wrote:
>>>
>>>> Hi Jothy, Thanks for the reply.
>>>> Can you explain me it further?
>>>> I want just a 2D contour, which means that I do not have the ability to
>>>> rotate it.
>>>>
>>>>
>>>> On Tue, Jun 26, 2012 at 4:35 PM, Jothybasu Selvaraj <
>>>> jothybasu at gmail.com> wrote:
>>>>
>>>>> You could simply set the z value to the z value of the plane on which
>>>>> you are drawing.
>>>>>
>>>>> Jothy
>>>>>
>>>>> On Tue, Jun 26, 2012 at 12:02 PM, Gishara Indeewarie <
>>>>> gish.777 at gmail.com> wrote:
>>>>>
>>>>>> I just have only x and y values to draw the contour.
>>>>>>  My requirement is that I need to add some control points to the
>>>>>> contour, so the
>>>>>> user can adjust the shape using control points. The example works
>>>>>> fine (
>>>>>> http://www.cmake.org/Wiki/VTK/Examples/Cxx/Widgets/ContourWidget)
>>>>>> unless it uses x,y,z data. I only want to have x,y data.
>>>>>> How can I do this?
>>>>>> Please help me.
>>>>>>
>>>>>> On Tue, Jun 26, 2012 at 10:52 AM, Gishara Indeewarie <
>>>>>> gish.777 at gmail.com> wrote:
>>>>>>
>>>>>>> Dear all,
>>>>>>>
>>>>>>> I want to do a 2d contour with some control points in vtk.
>>>>>>> I have found the example below:
>>>>>>> http://www.cmake.org/Wiki/VTK/Examples/Cxx/Widgets/ContourWidget
>>>>>>>
>>>>>>> This is good, but the problem is I only want a 2D one.
>>>>>>> Is there any way to do something like this for 2d data?
>>>>>>> Thanks in advance.
>>>>>>>
>>>>>>
>>>>>>
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>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Jothybasu Selvaraj
>>>>> PhD Student
>>>>> University of Liverpool
>>>>> UK
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Gish
>>>>
>>>
>>>
>>>
>>> --
>>> Jothybasu Selvaraj
>>> PhD Student
>>> University of Liverpool
>>> UK
>>>
>>>
>>
>>
>> --
>> Gish
>>
>
>
>
> --
> Jothybasu Selvaraj
> PhD Student
> University of Liverpool
> UK
>
>


-- 
Gish
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