XGMLReader
Repository source: XGMLReader
Description¶
This example reads and displays the graph from a gml file.
Other languages
See (CSharp)
Question
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Code¶
XGMLReader.cxx
#include <vtkGraphLayoutStrategy.h>
#include <vtkGraphLayoutView.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSimple2DLayoutStrategy.h>
#include <vtkUndirectedGraph.h>
#include <vtkViewTheme.h>
#include <vtkXGMLReader.h>
int main(int argc, char* argv[])
{
vtkNew<vtkNamedColors> colors;
if (argc != 2)
{
std::cout << "Required parameters: Filename e.g. fsm.gml" << std::endl;
return EXIT_FAILURE;
}
std::string inputFilename = argv[1];
vtkNew<vtkXGMLReader> reader;
reader->SetFileName(inputFilename.c_str());
reader->Update();
vtkUndirectedGraph* g = reader->GetOutput();
vtkNew<vtkViewTheme> theme;
theme->SetLineWidth(1);
theme->SetPointSize(5);
theme->SetCellOpacity(0.99);
theme->SetOutlineColor(colors->GetColor3d("Gray").GetData());
// Vertices
theme->SetPointColor(colors->GetColor3d("Chartreuse").GetData());
theme->SetSelectedPointColor(colors->GetColor3d("Magenta").GetData());
theme->SetPointHueRange(1.0, 1.0);
theme->SetPointSaturationRange(1.0, 1.0);
theme->SetPointValueRange(0.0, 1.0);
// theme->SetPointAlphaRange(0.2, 0.8);
// Edges
theme->SetCellColor(colors->GetColor3d("Honeydew").GetData());
theme->SetSelectedCellColor(colors->GetColor3d("Cyan").GetData());
theme->SetCellHueRange(0.1, 0.1);
theme->SetCellSaturationRange(0.2, 1.0);
theme->SetCellValueRange(0.5, 1.0);
// theme->SetCellAlphaRange(0.2, 0.8);
vtkNew<vtkSimple2DLayoutStrategy> simple2D;
vtkNew<vtkGraphLayoutView> graphLayoutView;
graphLayoutView->AddRepresentationFromInput(g);
graphLayoutView->ApplyViewTheme(theme);
// If we create a layout object directly, just set the pointer to this method.
// graphLayoutView->SetLayoutStrategy(simple2D);
graphLayoutView->SetLayoutStrategyToSimple2D();
graphLayoutView->ResetCamera();
graphLayoutView->GetRenderer()->GradientBackgroundOn();
graphLayoutView->GetRenderer()->SetBackground2(
colors->GetColor3d("DarkSlateGray").GetData());
graphLayoutView->GetRenderer()->SetBackground(
colors->GetColor3d("Black").GetData());
graphLayoutView->GetRenderWindow()->SetSize(600, 600);
graphLayoutView->GetRenderWindow()->SetWindowName("XGMLReader");
graphLayoutView->Render();
graphLayoutView->GetInteractor()->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
project(XGMLReader)
find_package(VTK COMPONENTS
CommonColor
CommonCore
CommonDataModel
IOInfovis
InfovisLayout
InteractionStyle
RenderingContextOpenGL2
RenderingCore
RenderingFreeType
RenderingGL2PSOpenGL2
RenderingOpenGL2
ViewsCore
ViewsInfovis
)
if (NOT VTK_FOUND)
message(FATAL_ERROR "XGMLReader: Unable to find the VTK build folder.")
endif()
# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(XGMLReader MACOSX_BUNDLE XGMLReader.cxx )
target_link_libraries(XGMLReader PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS XGMLReader
MODULES ${VTK_LIBRARIES}
)
Download and Build XGMLReader¶
Click here to download XGMLReader and its CMakeLists.txt file. Once the tarball XGMLReader.tar has been downloaded and extracted,
cd XGMLReader/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./XGMLReader
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.