Display of an SLC file

[Rik Rose]

On Wed, 10 May 2000 M.Schrijver at el.utwente.nl wrote:
> My first suggestion is to have a look at the samples in the several
> examplesTcl directories, especially the patented/examplesTcl. If you
> have Tcl installed, I'd say you're best off modifying one of them for
> your purposes. If not, it should not be too hard to convert them to C++
> code.
Unfortunately, the project requirements say "C++". :-(

> Second, since you say you get run-time errors it appears that the
> program compiled and linked succesfully. And thus your makefile does not
> really matter anymore.
The first sign of a hurriedly composed e-mail.

> Third, it would be a great help of you'd mention the specific run-time
> errors you get .....
The second sign of a hurriedly composed e-mail. The errors are as follows:

--- cut ---

ERROR: In vtkSLCReader.cxx, line 152
vtkSLCReader (0x805a208): SLC magic number is not correct

ERROR: In vtkSLCReader.cxx line 225
vtkSLCReader (0x805x208): SLC magic number is not correct

ERROR: In vtkMarchingCubes.cxx, line 442
vtkMarchingCubes (0x805af30): Scalars must be defined for contouring

--- end ---

This occurs with either the code I posted, or the code you supplied.

> Fifth, I guess you should do something like "skinExtractor->SetValue 0
> 128" to generate an iso-surface at level 128 (or whichever value you
> desire).
This generates the same errors.

> Sixth, I think that vtkMarchingContourFilter is more appropriate than
> vtkMarchingCubes; it will dispatch to the correct (read, the fastest)
> contour algorithm available for your type of data.
I'll switch to that once I can get something displayed. The project is a
demonstration of contour algorithms, so I will use that, and others.

> I wish you good luck with your project.
Many thanks.

rik


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