[vtkusers] direct memory access from Tcl

[H. Vidal, Jr.]

vtkDataArray::GetPointer looks like a place to start.

I know as of something like 4.2.3 (?) the default tcl build would export
this method for vtkDataArray children that were byte arrays
(vtkCharArray?) but this was not exported for any other type of child. I
believe one can specify this for export via some kind of cmake hacking and
black magic. I just tracked down the exported version for the byte array,
and adapted it to other children of vtkDataArray as needed. This allowed
me to copy data directly from C (via SWIG) to vtk, and process/analyze
there.

Hope that helps.

H.Vidal, Jr.
Tesseract Technology


On Tue, 6 Jan 2004, Erin McKay wrote:

> Hi All
>
> I wonder if someone could enlighten me: the Tcl interface to VTK
>(4.3 on OS X) seems to lack any methods that return memory addresses.
>These methods would, I feel, be very useful for integrating VTK
> into existing scripted applications (well, my scripted applications
> anyhoo). I have read the reference manual and guide but cannot find
> a description of the reasoning behind their exclusion. Are they really
> not available? Is this likely to change? Is there a work-around?
>
> regards
>
> Erin McKay
> Dept. Nuclear Medicine, St. George Hospital
> ph: +61 (0)2 9350 3112 ext: 3130
>