[vtkusers] How to add an axes to the render widow?

[An Jiye]

Thank you, Shyam. That's a good idea.

Now I still keep the axes the same renderer with other actors(isosurfaces).
And set it's origin to (0,0,0). This will make it looks like a real axes
hower I manipulate the camera. Before real rendering, I will calculate the
maximum size of the bounding boxes of all the other actors, using
vtkActor::GetBounds(). Then I will scale the axes actor by the calculated
result, using SetScale().

It works currently. But I want to make clear, does calling SetScale() to the
axes actor affect the camera? I am afraid the scaling will affect my later
picking operation and cause it returning false positions.

If it does, I will turn to two renderers' solution.

Thank you again.

An Jiye

----- Original Message ----- 
From: "Ramakrishna Shyamprakash" <ramakrishna.prakash at quest-global.com>
To: "An Jiye" <an_jiye at hotmail.com>; <vtkusers at vtk.org>
Sent: Tuesday, February 24, 2004 10:11 PM
Subject: Re: [vtkusers] How to add an axes to the render widow?


> An Jiye,
>             Consider keeping two renderers in one render window. one
> dedicated to actors and one, say in lower left corner of the window
> dedicated to axes. you can link the camera of both the renderers by
> adding observer.
>
> --Shyam
>
> -----Original Message-----
> From: "An Jiye" <an_jiye at hotmail.com>
> To: <vtkusers at vtk.org>
> Date: Tue, 24 Feb 2004 15:23:43 +0800
> Subject: [vtkusers] How to add an axes to the render widow?
>
> > Hi.
> >
> > I have created a pipeline vtkAxes->vtkPolyDataMapper->vtkActor in order
> > to
> > display an axes with other actural actors. I think this will be
> > convinent
> > for user to guess the position of other actors.
> >
> > But I can only see this axes(three lines) when there is no other
> > actors.
> > After I added some other vtkActor(some isosurfaces) to the renderer, I
> > can
> > not see it. Finally I found that it is too small to see. So how can I
> > automatically scale it to fit the current actors?
> >
> > Thank you in advance.
> >
> > An Jiye
> >
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