[vtkusers] How to draw lines in wxWindow

[Julian Ibarz]

To convert from wx coordinates to display coordinates (that is the display
coordinates of VTK and viewport coordinates of opengl) you just simply did
this :

x = x;
y = height - y; // height of the renderer

And doing this stuff (java syntax) :

vtkCoordinate coord = new vtkCoordinate();
coord.SetValue(x,y,0);
coord.SetCoordinateSystemToDisplay();


2008/6/26 Julian Ibarz <julian.ibarz at gmail.com>:

> To convert from wx coordinates to display coordinates (that is the display
> coordinates of VTK and viewport coordinates of opengl) you just simply did
> this :
>
> x = x;
> y = height - y; // height of the renderer
>
> And doing this stuff (java syntax) :
>
> vtkCoordinate coord = new vtkCoordinate();
> coord.SetValue(x,y,0);
> coord.SetCoordinateSystemToDisplay();
>
>
>
> 2008/6/26 Sercani <sercanimailgroups at gmail.com>:
>
>>  Hi everyone;
>>
>> I am trying to get the points where user clicks and drags the mouse and
>> create shapes by using these points. I've written a class that looks like
>> wxVTKRenderWindowInteractor which doesn't handle interaction but shows vtk
>> scene in wxWindow. When user selects one of the toggle toolbar buttons (for
>> drawing line, angle, rectangle etc.) mouse events are sent to a class named
>> GlassPanel that handles all drawing stuff. When user clicks a point, that
>> point is taken as p1, and when user starts dragging the mouse , position of
>> mouse is taken as p2, depending on what shape is selected a shape must be
>> created by using these two points. Firstly I decided to use vtkLineWidget
>> for drawing lines but I couldn't manage it, because wxWidgets coordinate
>> system's origin is upper left hand corner, and vtk uses lower left hand
>> corner as origin. I tried to convert wxWidgets event coordinates to
>> vtkCoordinate system, but I even couldn't find which coordinate system is
>> used by vtkRenderer. Wherever i click on wxWindow lines are drawn at the
>> windows center. How should I convert these coordinates?Or what is the best
>> way to draw 2D shapes using vtk?
>>
>> Thanks already…
>>
>>
>>
>>
>>
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>>
>
>
> --
> Julian Ibarz




-- 
Julian Ibarz
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