Fw: Fw: [vtkusers] vtkCoordinate and a simple test program

[Isidro Moreno]

OK Mark, thank you very much. It's a simple issue, but It has deep 
theoretical contents, so I'd very very grateful if not only you but also 
someone else can help me since I'm learning VTK and don't have much 
experience. There must be somebody who get over this easily.

Thank you again!

> Oh ok I see what you're trying to do. I've never done this before
> though so I can't offer any advice. I'll give it a try sometime this
> week if you haven't figured it out and let you know what I find,
>
> Mark
>
> On 6/26/07, Isidro Moreno <morenoisidro at yahoo.com.ar> wrote:
>> Mark,
>>
>>    SetWidth() and SetHeight() methods (vtkProp's methods),define the
>> dimensions of the rectangle in which the line is drawn (it could be not a
>> line, but also a circle, a polygon, etc.). In fact, that rectangle is 
>> which
>> I want to autoscale when window's size changes. As a result, the line 
>> would
>> fit to it. That's what I've understood till now. But I could be wrong...
>>
>> Isidro
>>
>>
>> >I thought all coordinates are mapped directly to the opengl coordinate
>> > system unless you're doing it in 'screen coordinates' of the VTK
>> > render window - I think for example some of the caption actors use
>> > that.
>> >
>> > As for the line thickness, I thought there was a different property of
>> > the line to set (setting the actor width height won't change anything)
>> > - something along the lines of:
>> >
>> >    your_line->GetProperty()->SetLineWidth(5000000);
>> >
>> > SetLineWidth() seems to be a method of vtkProperty.
>> >
>> > I haven't worked with VTK in a few months but I hope my vague memories
>> > help a bit,
>> >
>> > Mark
>> >
>> > On 6/26/07, Isidro Moreno <morenoisidro at yahoo.com.ar> wrote:
>> >>
>> >>
>> >> Hello! I've made a simple VTK/C++ test program. It's just a 2D line. 
>> >> Now,
>> >> I
>> >> don't know how to make the line size change. I've tried many methods; 
>> >> and
>> >> changing vtkActor's coordinate system (vtkActor2D's), but no results. 
>> >> I
>> >> even
>> >> wonder what coordinate system is vtkLineSource defined in (see code
>> >> below).
>> >>
>> >> Here's my code:
>> >>
>> >> vtkLineSource *line=vtkLineSource::New();
>> >>     line->SetPoint1(20.0,20.0,0.0);    // what Coordinate System??
>> >>     line->SetPoint2(80.0,150.0,0.0);  // what Coordinate System??
>> >>
>> >> vtkPolyDataMapper2D *mapper=vtkPolyDataMapper2D::New();
>> >>     mapper->SetInput(line->GetOutput());
>> >>
>> >> vtkActor2D *actor=vtkActor2D::New();
>> >>     actor->SetMapper(mapper);
>> >>     actor->GetProperty()->SetColor(1.0,0.0,0.0);
>> >>     actor->SetWidth(0.5);    // Doesn't work!!
>> >>     actor->SetHeight(0.5);   // Doesn't work!!
>> >>
>> >> vtkRenderer *render=vtkRenderer::New();
>> >> vtkRenderWindow *win=vtkRenderWindow::New();
>> >>     win->AddRenderer(render);
>> >>
>> >> vtkRenderWindowInteractor
>> >> *interac=vtkRenderWindowInteractor::New();
>> >>     interac->SetRenderWindow(win);
>> >>
>> >>     render->AddActor2D(actor);
>> >>     render->SetBackground(0.1,0.2,0.4);
>> >>
>> >>     win->Render();
>> >>
>> >>     interac->Initialize();
>> >>     interac->Start();
>> >>
>> >> line->Delete();
>> >> mapper->Delete();
>> >> actor->Delete();
>> >> render->Delete();
>> >> win->Delete();
>> >> interac->Delete();
>> >>
>> >> I want to make the line resize when changing windows size. I'd be very
>> >> grateful if somebody could help me with this. Thanks!!!
>> >> _______________________________________________
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>> >>
>> >>
>> >
>> >
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>>
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