Re: [Paraview] Application using Paraview library in C++
Hey Adebayo,
(Please reply on list so everyone can contribute and learn together.)
If you go to the Paraview downloads page:
http://www.paraview.org/paraview/resources/software.html
Down near the bottom of the page there are instructions for downloading
(checking out with CVS) the current development distribution (3.7). This will
have the Custom Applications Examples folder in the source code, and it is this
version that has the ability to build branded applications.
Let us know if you have any trouble,
-Eric
On Mar 2, 2010, at 12:36 AM, Adebayo Olowoyeye wrote:
Thanks for the reply!!
The link helps a lot. I do not have the CustomApplications folder in the
paraview version I've downloaded (current release). Can you point me in the
right direction?
Thanks for your time!
On Wed, Jan 27, 2010 at 9:11 AM, Eric E. Monson emon...@cs.duke.edu wrote:
Hello Adebayo,
Sorry I'm not going to address your question directly (because I don't know
the answer), but I wanted to make sure you know about other options that are
available to you for building applications based on ParaView. Maybe you've
thought all of this through already -- in that case please excuse me.
If you want or need the capabilities of ParaView to deal with large data
sets, or if you want to just build upon other nice existing elements of
ParaView, but you don't need all of its functionality, there is now a much
easier way to build a simplified / customized version of ParaView through
branding. This wiki page describes the process:
http://www.paraview.org/Wiki/Writing_Custom_Applications
There are also six examples in {PVsource}/Examples/CustomApplications.
This way it is not difficult to get ParaView's basic functionality, and then
add your own custom readers, filters, widgets, etc, through plugins.
If you don't need to scale your application to very large data sets, then
personally I find it easier to build a custom application directly using VTK
rather than building upon ParaView's libraries.
Take care,
-Eric
--
Eric E Monson
Duke Visualization Technology Group
On Jan 26, 2010, at 8:24 PM, pat marion wrote:
Hi,
You should include the exact error message you are getting so that people
can help.
I'm not very familiar with building custom apps using paraview so I won't be
able to answer your question exactly... but to change the representation to
volume you must create proxy objects for a lookup table and a piecewise
function, then assign them to the representation's proxy properties
LookupTable and ScalarOpacityFunction.
The best example I have is in python- a image-data source is created and the
representation is set to volume, the scalar value 37 is set to the color red
with an opacity value of 0, and scalar value 270 is set to the color blue
with opacity value 0.5:
Wavelet()
rep = Show()
rep.ColorArrayName = RTData
rep.Representation = Volume
lut = CreateLookupTable()
lut.RGBPoints = [37, 1, 0, 0, 270, 0, 0, 1]
rep.LookupTable = lut
func = CreatePiecewiseFunction()
func.Points = [37, 0, 270, 0.5]
rep.ScalarOpacityFunction = func
Render()
Goodluck!
Pat
On Tue, Jan 26, 2010 at 2:38 AM, Adebayo Olowoyeye aolow...@umail.iu.edu
wrote:
Hi all,
I am attempting to use paraview's library to visualize medical volumes in
an application I am building from scratch. The program is written in C++.
I am having a hard time finding adequate documentation (forums and examples)
that shows how to build an application that uses paraview's library in C++.
I have ran the example program BasicApp.cxx and it works, but it uses a
SphereSource. I am loading dicom images or .vtk images. When I edit the
code for BasicApp.cxx to load .vtk files I get an error after setting the
representation to volume. From reading similar problems on forums, I think
the problem pertains to colormaps and scalars, but I cannot find
documentation on how to fix this in C++. I'm including my code below. I
may be over complicating this, but any help is appreciated.
Thanks for your time!
using namespace std;
// our main window
class MainWindow : public QMainWindow
{
public:
MainWindow()
{
// automatically make a server connection
pqApplicationCore* core = pqApplicationCore::instance();
pqObjectBuilder* ob = core-getObjectBuilder();
pqServer* server = ob-createServer(
pqServerResource(builtin:));
// create a graphics window and put it in our main window
this-RenderView =
qobject_castpqRenderView*(ob-createView(pqRenderView::renderViewType(),
server));
this-setCentralWidget(this-RenderView-getWidget());
// create source and elevation filter
pqPipelineSource* source;
pqPipelineSource* elevation;
source = ob-createSource(sources, SphereSource, server);
// updating source so that when elevation
Re: [Paraview] Application using Paraview library in C++
Hello Adebayo,
Sorry I'm not going to address your question directly (because I don't know the
answer), but I wanted to make sure you know about other options that are
available to you for building applications based on ParaView. Maybe you've
thought all of this through already -- in that case please excuse me.
If you want or need the capabilities of ParaView to deal with large data sets,
or if you want to just build upon other nice existing elements of ParaView, but
you don't need all of its functionality, there is now a much easier way to
build a simplified / customized version of ParaView through branding. This
wiki page describes the process:
http://www.paraview.org/Wiki/Writing_Custom_Applications
There are also six examples in {PVsource}/Examples/CustomApplications.
This way it is not difficult to get ParaView's basic functionality, and then
add your own custom readers, filters, widgets, etc, through plugins.
If you don't need to scale your application to very large data sets, then
personally I find it easier to build a custom application directly using VTK
rather than building upon ParaView's libraries.
Take care,
-Eric
--
Eric E Monson
Duke Visualization Technology Group
On Jan 26, 2010, at 8:24 PM, pat marion wrote:
Hi,
You should include the exact error message you are getting so that people can
help.
I'm not very familiar with building custom apps using paraview so I won't be
able to answer your question exactly... but to change the representation to
volume you must create proxy objects for a lookup table and a piecewise
function, then assign them to the representation's proxy properties
LookupTable and ScalarOpacityFunction.
The best example I have is in python- a image-data source is created and the
representation is set to volume, the scalar value 37 is set to the color red
with an opacity value of 0, and scalar value 270 is set to the color blue
with opacity value 0.5:
Wavelet()
rep = Show()
rep.ColorArrayName = RTData
rep.Representation = Volume
lut = CreateLookupTable()
lut.RGBPoints = [37, 1, 0, 0, 270, 0, 0, 1]
rep.LookupTable = lut
func = CreatePiecewiseFunction()
func.Points = [37, 0, 270, 0.5]
rep.ScalarOpacityFunction = func
Render()
Goodluck!
Pat
On Tue, Jan 26, 2010 at 2:38 AM, Adebayo Olowoyeye aolow...@umail.iu.edu
wrote:
Hi all,
I am attempting to use paraview's library to visualize medical volumes in
an application I am building from scratch. The program is written in C++. I
am having a hard time finding adequate documentation (forums and examples)
that shows how to build an application that uses paraview's library in C++.
I have ran the example program BasicApp.cxx and it works, but it uses a
SphereSource. I am loading dicom images or .vtk images. When I edit the
code for BasicApp.cxx to load .vtk files I get an error after setting the
representation to volume. From reading similar problems on forums, I think
the problem pertains to colormaps and scalars, but I cannot find
documentation on how to fix this in C++. I'm including my code below. I may
be over complicating this, but any help is appreciated.
Thanks for your time!
using namespace std;
// our main window
class MainWindow : public QMainWindow
{
public:
MainWindow()
{
// automatically make a server connection
pqApplicationCore* core = pqApplicationCore::instance();
pqObjectBuilder* ob = core-getObjectBuilder();
pqServer* server = ob-createServer(
pqServerResource(builtin:));
// create a graphics window and put it in our main window
this-RenderView =
qobject_castpqRenderView*(ob-createView(pqRenderView::renderViewType(),
server));
this-setCentralWidget(this-RenderView-getWidget());
// create source and elevation filter
pqPipelineSource* source;
pqPipelineSource* elevation;
source = ob-createSource(sources, SphereSource, server);
// updating source so that when elevation filter is created, the defaults
// are setup correctly using the correct data bounds etc.
vtkSMSourceProxy::SafeDownCast(source-getProxy())-UpdatePipeline();
QStringList files;
files.push_back(../brain.vtk);
pqPipelineSource *reader;
pqObjectBuilder *builder = core-getObjectBuilder();
reader = builder-createReader(QString(internal_sources),
QString(legacyreader), files, server);
pqDataRepresentation *repr =
ob-createDataRepresentation(reader-getOutputPort(0), this-RenderView);
if(repr){
vtkSMPropertyHelper(repr-getProxy(),
Representation).Set(vtkSMPVRepresentationProxy::VOLUME);
pqDisplayPolicy pqDisplayP = core-getDisplayPolicy();
repr-getProxy()-UpdateVTKObjects();
}
//elevation = ob-createFilter(filters, ElevationFilter, source);
// put the elevation in the window
Re: [Paraview] Application using Paraview library in C++
Hi,
You should include the exact error message you are getting so that people
can help.
I'm not very familiar with building custom apps using paraview so I won't be
able to answer your question exactly... but to change the representation to
volume you must create proxy objects for a lookup table and a piecewise
function, then assign them to the representation's proxy properties
LookupTable and ScalarOpacityFunction.
The best example I have is in python- a image-data source is created and the
representation is set to volume, the scalar value 37 is set to the color red
with an opacity value of 0, and scalar value 270 is set to the color blue
with opacity value 0.5:
Wavelet()
rep = Show()
rep.ColorArrayName = RTData
rep.Representation = Volume
lut = CreateLookupTable()
lut.RGBPoints = [37, 1, 0, 0, 270, 0, 0, 1]
rep.LookupTable = lut
func = CreatePiecewiseFunction()
func.Points = [37, 0, 270, 0.5]
rep.ScalarOpacityFunction = func
Render()
Goodluck!
Pat
On Tue, Jan 26, 2010 at 2:38 AM, Adebayo Olowoyeye aolow...@umail.iu.eduwrote:
Hi all,
I am attempting to use paraview's library to visualize medical volumes in
an application I am building from scratch. The program is written in C++.
I am having a hard time finding adequate documentation (forums and examples)
that shows how to build an application that uses paraview's library in C++.
I have ran the example program BasicApp.cxx and it works, but it uses a
SphereSource. I am loading dicom images or .vtk images. When I edit the
code for BasicApp.cxx to load .vtk files I get an error after setting the
representation to volume. From reading similar problems on forums, I think
the problem pertains to colormaps and scalars, but I cannot find
documentation on how to fix this in C++. I'm including my code below. I
may be over complicating this, but any help is appreciated.
Thanks for your time!
using namespace std;
// our main window
class MainWindow : public QMainWindow
{
public:
MainWindow()
{
// automatically make a server connection
pqApplicationCore* core = pqApplicationCore::instance();
pqObjectBuilder* ob = core-getObjectBuilder();
pqServer* server = ob-createServer(
pqServerResource(builtin:));
// create a graphics window and put it in our main window
this-RenderView =
qobject_castpqRenderView*(ob-createView(pqRenderView::renderViewType(),
server));
this-setCentralWidget(this-RenderView-getWidget());
// create source and elevation filter
pqPipelineSource* source;
pqPipelineSource* elevation;
source = ob-createSource(sources, SphereSource, server);
// updating source so that when elevation filter is created, the
defaults
// are setup correctly using the correct data bounds etc.
vtkSMSourceProxy::SafeDownCast(source-getProxy())-UpdatePipeline();
QStringList files;
files.push_back(../brain.vtk);
pqPipelineSource *reader;
pqObjectBuilder *builder = core-getObjectBuilder();
reader = builder-createReader(QString(internal_sources),
QString(legacyreader), files, server);
pqDataRepresentation *repr =
ob-createDataRepresentation(reader-getOutputPort(0), this-RenderView);
if(repr){
vtkSMPropertyHelper(repr-getProxy(),
Representation).Set(vtkSMPVRepresentationProxy::VOLUME);
pqDisplayPolicy pqDisplayP = core-getDisplayPolicy();
repr-getProxy()-UpdateVTKObjects();
}
//elevation = ob-createFilter(filters, ElevationFilter, source);
// put the elevation in the window
//ob-createDataRepresentation(elevation-getOutputPort(0),
this-RenderView);
// zoom to sphere
this-RenderView-resetCamera();
// make sure we update
this-RenderView-render();
}
QPointerpqRenderView RenderView;
};
...
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[Paraview] Application using Paraview library in C++
Hi all,
I am attempting to use paraview's library to visualize medical volumes in
an application I am building from scratch. The program is written in C++.
I am having a hard time finding adequate documentation (forums and examples)
that shows how to build an application that uses paraview's library in C++.
I have ran the example program BasicApp.cxx and it works, but it uses a
SphereSource. I am loading dicom images or .vtk images. When I edit the
code for BasicApp.cxx to load .vtk files I get an error after setting the
representation to volume. From reading similar problems on forums, I think
the problem pertains to colormaps and scalars, but I cannot find
documentation on how to fix this in C++. I'm including my code below. I
may be over complicating this, but any help is appreciated.
Thanks for your time!
using namespace std;
// our main window
class MainWindow : public QMainWindow
{
public:
MainWindow()
{
// automatically make a server connection
pqApplicationCore* core = pqApplicationCore::instance();
pqObjectBuilder* ob = core-getObjectBuilder();
pqServer* server = ob-createServer(
pqServerResource(builtin:));
// create a graphics window and put it in our main window
this-RenderView =
qobject_castpqRenderView*(ob-createView(pqRenderView::renderViewType(),
server));
this-setCentralWidget(this-RenderView-getWidget());
// create source and elevation filter
pqPipelineSource* source;
pqPipelineSource* elevation;
source = ob-createSource(sources, SphereSource, server);
// updating source so that when elevation filter is created, the
defaults
// are setup correctly using the correct data bounds etc.
vtkSMSourceProxy::SafeDownCast(source-getProxy())-UpdatePipeline();
QStringList files;
files.push_back(../brain.vtk);
pqPipelineSource *reader;
pqObjectBuilder *builder = core-getObjectBuilder();
reader = builder-createReader(QString(internal_sources),
QString(legacyreader), files, server);
pqDataRepresentation *repr =
ob-createDataRepresentation(reader-getOutputPort(0), this-RenderView);
if(repr){
vtkSMPropertyHelper(repr-getProxy(),
Representation).Set(vtkSMPVRepresentationProxy::VOLUME);
pqDisplayPolicy pqDisplayP = core-getDisplayPolicy();
repr-getProxy()-UpdateVTKObjects();
}
//elevation = ob-createFilter(filters, ElevationFilter, source);
// put the elevation in the window
//ob-createDataRepresentation(elevation-getOutputPort(0),
this-RenderView);
// zoom to sphere
this-RenderView-resetCamera();
// make sure we update
this-RenderView-render();
}
QPointerpqRenderView RenderView;
};
...
___
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the ParaView Wiki at:
http://paraview.org/Wiki/ParaView
Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
