gmane.comp.lib.vtk.user

Re: vtkProbeFilter not probing volume

Seth Gilchrist — 2013-05-23T23:47:45

I played with this for quite a while, but never could get it to work. In
the end I made an application specific probe. The code, for others who have
the same issue is:

#include <vtkUnstructuredGridReader.h>
#include <vtkPolyData.h>
#include <vtkUnstructuredGrid.h>
#include <vtkXMLPolyDataReader.h>
#include <vtkXMLPolyDataWriter.h>
#include <vtkSmartPointer.h>
#include <vtkPointData.h>
#include <vtkDoubleArray.h>
#include <vtkCellLocator.h>
#include <vtkWedge.h>
#include <vtkCell.h>


int main(int argc, char **argv)
{
    // Read the volume
    vtkSmartPointer<vtkUnstructuredGridReader> volumeReader =
        vtkSmartPointer<vtkUnstructuredGridReader>::New();
    volumeReader->SetFileName("/home/seth/Desktop/volume.vtk");
    volumeReader->Update();

    // Read the surface
    vtkSmartPointer<vtkXMLPolyDataReader> polyReader =
        vtkSmartPointer<vtkXMLPolyDataReader>::New();
    polyReader->SetFileName("/home/seth/Desktop/aligned.vtp");
    polyReader->Update();


    // remove pre-existing array data

Re: Building vtkLocal with vtk6-rc1 missingvtkMakeInstantiator

David E DeMarle — 2013-05-23T21:46:55

The vtkLocal and vtkMy examples still reflect the VTK5's "kit" structured
build system and need to be rewritten.
I'll see about providing a new example of an external module and report on
the bugtracker at:
http://vtk.org/Bug/view.php?id=14082

Thanks for the feedback on the release candidate!

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909


On Wed, May 22, 2013 at 12:11 PM, Laurence Griffiths <
lgriffiths.aero< at >gmail.com> wrote:

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Re: Read data from Callback function

Massinissa Bandou — 2013-05-23T20:59:44

Hi David,

This code is compiling if you run it you can see that it doesn't fill the
matrix well while picking with "P".

Is there any norme how to display code on vtkmaillist?
thx for your advice and help!!

the test.h file

#include "vtkSmartPointer.h"
#include "vtkCommand.h"
#include "vtkActor.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkPointPicker.h"
#include "vtkSphereSource.h"
#include <vtkPolyData.h>
#include "vtkPolyDataMapper.h"
#include "vtkProperty.h"
#include <vector>

using namespace std;

class ImgRegistration
{
public:
ImgRegistration(){};
  void ReadPolyData();
  void TableOfLandmark(std::vector<std::vector&lt;double>>);
private:
std::vector<vector&lt;double>> SourceLandmark; 
};

class vtkMyCallback : public vtkCommand 
{ 
public:  
        ImgRegistration obj; 

        vtkMyCallback::vtkMyCallback(){SelectedActor = NULL;} 
        static vtkMyCallback *New(){return new vtkMyCallback;} 

        void SetSelectionActor(vtkA

vtkChartXy problem

liulewes — 2013-05-23T20:53:16

I'm using the vtk example here: http://www.vtk.org/Wiki/VTK/Examples/Cxx/Plotting/LinePlot
and I found out that the cosine line is not shown with the original code. Further debugging showed that the following line caused the problem:
line->GetPen()->SetLineType(2);

It looked to me that any line type other than the default one will fail to draw correctly.
Can anyone give a solution?

Environment:
Win7 x64
vtk 5.10

Lewes

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Re: ANNOUNCE: vtk 6.0.0.rc1 is available to download

Bill Lorensen — 2013-05-23T20:09:09

Dzenan,

Here is a patch to address your issues:
http://review.source.kitware.com/#/c/11394/

Please register for a gerrit account so you can contribute in the future.

Thanks for your efforts to towards a better VTK.

Bill



On Thu, May 23, 2013 at 3:51 PM, Dženan Zukić <dzenanz< at >gmail.com> wrote:

Re: ANNOUNCE: vtk 6.0.0.rc1 is available to download

Dženan Zukić — 2013-05-23T19:51:26

Yes, I am using RC1 from the download page (
http://www.vtk.org/files/release/6.0/vtk-6.0.0.rc1.zip).

I will intersperse a few message() calls in CMakeLists.txt tomorrow and
report the results. It is 9:51 pm here in Germany :D


On Thu, May 23, 2013 at 9:34 PM, Marcus D. Hanwell <
marcus.hanwell< at >kitware.com> wrote:

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Re: ANNOUNCE: vtk 6.0.0.rc1 is available to download

Marcus D. Hanwell — 2013-05-23T19:34:48

Adding message(FATAL_ERROR "VTK_LIBRARIES: ${VTK_LIBRARIES}") to your
CMakeLists.txt would be helpful. That variable is populated each time
you call find_package(VTK COMPONENTS vtkModuleName NO_MODULE) with the
module you ask for and all of its dependencies. If it is called
without a COMPONENTS argument it defaults to containing all enabled
modules - that looks like the case here with the config file perhaps
being out of sync with the build for some reason.

I can't reproduce your failure here, but will take a second look on
Windows. Can you confirm you are building against VTK 6.0.0 RC1? It is
possible you have some config files hanging around for the modules
that were later disabled - I can try this on Windows later to see if
it is an issue. Is you VTK_DIR referencing the build tree, or an
installed VTK 6.0 in this case?

Marcus

On Thu, May 23, 2013 at 3:24 PM, Dženan Zukić <dzenanz< at >gmail.com> wrote:
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Re: ANNOUNCE: vtk 6.0.0.rc1 is available to download

Dženan Zukić — 2013-05-23T19:25:31

I will provide more detailed info tomorrow, when I get back to office.


On Thu, May 23, 2013 at 9:24 PM, Dženan Zukić <dzenanz< at >gmail.com> wrote:

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Re: ANNOUNCE: vtk 6.0.0.rc1 is available to download

Dženan Zukić — 2013-05-23T19:24:04

Attached is the version of my CMakeLists.txt before I started meddling with
find_package(vtk). It makes not difference to change it to this:
FIND_PACKAGE(VTK 6.0 REQUIRED COMPONENTS vtkGUISupportQtOpenGL NO_MODULE)

Also, it is these 3 libraries which are included into projects input
erroneously:
vtkTestingGenericBridge.lib
vtkTestingIOSQL.lib
vtkTestingRendering.lib


On Thu, May 23, 2013 at 9:07 PM, Marcus D. Hanwell <
marcus.hanwell< at >kitware.com> wrote:

cmake_minimum_required(VERSION 2.6)

INCLUDE_DIRECTORIES( ${CMAKE_CURRENT_SOURCE_DIR} )
add_subdirectory(qe)
INCLUDE_DIRECTORIES(qe)

PROJECT(Spine CXX C)

find_path( EIGEN_DIR Eigen DOC "A path to Eigen libaray, a linear algebra solver" )
INCLUDE_DIRECTORIES( ${EIGEN_DIR} )

#find_path( LevMar_DIR levmar-2.6 DOC "A path to Levenberg-Marquardt library")
#INCLUDE_DIRECTORIES( ${LevMar_DIR} )

FIND_PACKAGE(OpenCV REQUIRED)
#message("OpenCV_LIBS=${OpenCV_LIBS}")
FIND_PACKAGE(TBB REQUIRED) #required by OpenCV for threaded object recognition
include_directories

Re: ANNOUNCE: vtk 6.0.0.rc1 is available to download

Marcus D. Hanwell — 2013-05-23T19:07:32

On Thu, May 23, 2013 at 11:19 AM, Marcus D. Hanwell
<marcus.hanwell< at >kitware.com> wrote:
On looking into this further I am unable to reproduce it. I see you
are doing this on Windows, and vtkTestingGenericBridge seems to be
giving you the issue. This is only referenced by the vtkFiltersGeneric
TEST_DEPENDS as far as I can tell, could you provide a fuller sample
of your CMake code? It looks like you are trying to find
vtkGUISupportQtOpenGL, which has no dependency on this module,
printing the contents of ${VTK_LIBRARIES} would be useful, along with
exact VTK version (RC1 I guess), compiler, steps to build VTK locally.

Thanks for reporting this issue, hopefully we can get to the bottom of
this soon (I can give this a try on a Windows machine, but I don't see
how vtkTestingGenericBridge is getting linked to from
vtkGUISupportQtOpenGL to be honest - even with testing turned on).

Marcus
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vtkProbeFilter not probing volume

Seth Gilchrist — 2013-05-23T19:08:28

Hello all,
I'm having a problem with the vtkProbeFilter. I have a vtkUnstructuredGrid
volume with one data field called MinPStrain and I am trying to probe it
with a vtkPolyData surface. The output indicates that the two interact in
only a very small portion of the surface, when in reality they almost
completely overlap.

There are some screen shots at:
https://plus.google.com/photos/101839812291734892344/albums/5881253191058882961?authkey=CIOdsYjQi8zKjQE

On the left is the surface and volume in their actual positions. On the
right is the output of the probe, translated so that it can be viewed.

Most recently I have tried using the vtkAppendFilter to convert the
vtkPolyData to a vtkUnstructuredGrid, but to no avail. The latest code is:

#include <vtkUnstructuredGridReader.h>
#include <vtkXMLUnstructuredGridWriter.h>
#include <vtkPolyData.h>
#include <vtkUnstructuredGrid.h>
#include <vtkXMLPolyDataReader.h>
#include <vtkXMLPolyDataWriter.h>
#include <vtkProbeFilter.h>
#include <vtkSmartPointer.h>
#include <

Re: Read data from Callback function

David Doria — 2013-05-23T19:06:06

On Thu, May 23, 2013 at 2:45 PM, Massinissa Bandou
<Massinissa.Bandou< at >usherbrooke.ca> wrote:

You really must simplify your problem into the very bare minimum that
is required to demonstrate it. It will usually help you find the
solution, and it will certainly make it easier for us to find the
solution. You can do this by:

- Include all necessary headers
- Remove Qt dependency
- Use a vtkSphereSource instead of loading an obj file.
- Replace "seems not working!" with the actual error.
- If it is crashing, use a debugger to tell us where.

David
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Re: Rendering in the existing window!

Alex Malyushytskyy — 2013-05-23T19:05:52

then deletes it.
And that does mean that there is nothing visually happens beside time
consuming operations which allocate memory, create child window, draw in
it, then delete everything what just was done and return to native pain
event .


On Thu, May 23, 2013 at 10:43 AM, Alex Malyushytskyy
<alexmalvtk< at >gmail.com>wrote:

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Re: Read data from Callback function

Massinissa Bandou — 2013-05-23T18:45:41

Hello David! Thank you for your reply!

Sorry, I symplified my problem and I tried to display the the components of
the matrix with QTableWidget but it shows nothing! I'm pretty sure that my
Qt code is good but I still don't know how I can get the matrix values from
the callback function? I'm not sure of defining an object of my main class
in my vtkMyLandmark is a good idea. 

Thank you so much for your help!

I just want to fill the SourceLandmark matrix of picked positions.

#include "qtablewidget.h"
#include "QVTKWidget.h"
some others 

class ImageRegistration : public QMainWindow
{
Q_OBJECT
public:
        ImageRegistration(QWidget *parent = 0, Qt::WFlags flags = 0);
void ReadPolyData(){
        /*
        *  some code to read a polydata (.obj file)
        */
vtkPointPicker *picker = vtkPointPicker::New();
picker->SetTolerance(0.01);

vtkMyLandmark *callback = vtkMyLandmark::New();
callback->SetSelectionActor(sphereActor);  sphere created to display during
point selection

QVTKWidget->GetInteract

Re: Drawing half a million "vtkParametricEllipsoid"s

David Doria — 2013-05-23T18:35:38


Why would you use R*R instead of just R?

I've never actually used this, but from what I understand from the
documentation it interprets the columns of the tensor as the axes of
the glyph. That is, if you have:

1 0 0
0 .7 -.7
0 .7 .7

You will get a 45 degree rotation around x, and no scaling. If you had

2 0 0
0 .7 -.7
0 .7 .7

you should get a scale factor of 2 in the (new) x-direction. It should
be equivalent to

SR

where S is a diagonal scaling matrix and R is your rotation matrix. In
this case, it would be

S =
2 0 0
0 1 0
0 0 1

(http://en.wikipedia.org/wiki/Scaling_%28geometry%29#Matrix_representation)

David
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mapping composite datasets with different scalar celldata

Gerrick Bivins — 2013-05-23T17:51:52

Hi All,
Is there a way to replicate the ability in paraview to visualize a composite data set where each block in the composite
may have different scalar fields? Is there a particular mapper that does it?
In paraview, all available arrays are listed and if the array doesn't exist in some of the
blocks, it is simply appended with a "(partial)" and  the visualization is displayed as expected.
Any ideas on how to duplicate this would be greatly appreciated.
Gerrick

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Vi

Re: Rendering in the existing window!

Alex Malyushytskyy — 2013-05-23T17:43:41

You will have more chances to get help if you post/reply to mailing list,
so I am forwarding this to it.
As for your problem, look at the code I recommended to look above.
As far as I can tell your code at every paint event creates pipeline then
deletes it.


Alex


On Wed, May 22, 2013 at 9:16 PM, Le Minh Nhat <nhatleminh10< at >gmail.com>wrote:

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Re: Drawing half a million "vtkParametricEllipsoid"s

VoodooCode — 2013-05-23T16:49:42

I got another question.

I can use the tensor : RotationMatrix * RotationMatrix as the rotation, is
this right?
And the tensor: ScaleX, 0, 0, 0, ScaleY, 0, 0, 0, ScaleZ to scale an object,
is this right too?

I cannot figure out how to combine them, so that I have a single tensor for
rotation and scaling.



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Re: Cannot open Dicom images

David Cole — 2013-05-23T16:48:46

-----Original Message-----
From: Max <smapersmaper< at >gmail.com>
To: vtkusers <vtkusers< at >vtk.org>
Sent: Thu, May 23, 2013 7:27 am
Subject: Re: [vtkusers] Cannot open Dicom images


I succeeded in showing one image with SetFileName function.
But when i'm trying to use SetDirectoryName function to show all the 
files
in current directory, it shows nothing. the code is:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Kitware.VTK;

namespace AAASimpleDicomReader
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

         private void renderWindowControl1_Load(object sender, EventArgs 
e)
        {

            string folder = < at >"c:\\DicomPhantom\\A\\";
            string file = "20121203135029687";
            //string folder =
< at >"c:\DicomImages\VTK_Examples_StandardFormats_Input_DicomTestImages\matla
b\e

Re: Drawing half a million "vtkParametricEllipsoid"s

David Doria — 2013-05-23T16:04:04

You must use:
tensorGlyph->ExtractEigenvaluesOff();

For it to interpret the matrix directly as a rotation matrix (or
rotation + scaling). Otherwise it computes the eigenvectors of your
matrix and interprets those as the axes, which is not want here.

I have changed this example to use only two points, and display a cube
glyph with no rotation/scaling at the first point, and a glyph rotated
45 degrees around the x-axis at the second point:

http://www.vtk.org/Wiki/VTK/Examples/Visualization/TensorGlyph

David
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Re: ANNOUNCE: vtk 6.0.0.rc1 is available to download

Bill Lorensen — 2013-05-23T16:01:34

I've started looking at this testing issue.



On Thu, May 23, 2013 at 11:19 AM, Marcus D. Hanwell <
marcus.hanwell< at >kitware.com> wrote: