[Insight-developers] itkMatrix: Algorithms Call: 02/16/01

[Ting Chen]

Hi!
I am trying to test my itkDeformable Mesh structure before check it into
Insight, but I found this new link error happened(I am sure this is related
with the update of the insight numeric classes) please see it and tell me
what is wrong here. Thanks!
ting


Linking...
   Creating library Debug/itkdeformable.lib and object
Debug/itkdeformable.exp
itkdeformable.obj : error LNK2001: unresolved external symbol "protected:
void __thiscall vnl_matrix<double>::destroy(void)"
(?destroy@?$vnl_matrix@N@@IAEXXZ)
Debug/itkdeformable.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

-----Original Message-----
From: William A. Hoffman <bill.hoffman@kitware.com>
To: Stephen R. Aylward <aylward@unc.edu>; Insight-Developers (E-mail)
<insight-developers@public.kitware.com>
Date: Sunday, February 18, 2001 11:56 AM
Subject: Re: [Insight-developers] itkMatrix: Algorithms Call: 02/16/01


>There should not be that much cost in the conversion to the vnl vectors.
>This is what I feared in creating our own itkVector and itkMatrix, we
>would re-implement much of the code.
>
>The conversion should be no more expensive than a function call.
>The vnl_fixed matrix and vector can re-use the memory of the itkVector and
>itkMatrix.   The only difference is that there would be a pointer to the
data,
>and a size variable.   Think of it as a function call:
>
>for example:
>
>multiply_vectors(const float* data1, int size1, const float* data2, int
size2);
>
>same as:
>
>itkVector v1, v2;
>convert_tovnl_vector(v) * convert_tovnl_vector(v);
>
>There should be some convenient way of converting from itkVector to
>vnl_vector_fixed.
>
>No dynamic memory is allocated in the conversion, just the initialization
of
>the pointer and the size variable.  With a smart compiler, this could all
be
>done with registers.
>
>-Bill
>
>
>At 09:40 PM 2/16/01 -0500, Stephen R. Aylward wrote:
>
>>The idea is to provide itk users with a consistent-looking interface and
>>to increase the speed of common vector-matrix ops in itk.
>>
>>So, since we have itkVector, we should have itkMatrix for a more
>>consistent API.
>>
>>Also, because of the cost associated with converting an itkVector to a
>>vnlVector (a constructor is called and memory is allocated), we should
>>provide a few FUNCTIONS for the most common vector and matrix math that
>>uses the itkVector and itkMatrix classes directly.
>>
>>--
>>===============================================
>>Stephen R. Aylward
>>Assistant Professor of Radiology
>>Adjunct Assistant Professor of Computer Science
>>http://www.cs.unc.edu/~aylward
>>aylward@unc.edu
>>(919) 966-9695
>>
>>
>>
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>
>
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