GeoAssignCoordinates
VTKExamples/Cxx/Geovis/GeoAssignCoordinates
Code
GeoAssignCoordinates.cxx
#include <vtkSmartPointer.h>
#include <vtkVersion.h>
#include <vtkDataSetAttributes.h>
#include <vtkGeoAssignCoordinates.h>
#include <vtkDoubleArray.h>
#include <vtkGraphMapper.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkMutableDirectedGraph.h>
int main(int, char* [])
{
vtkSmartPointer<vtkMutableDirectedGraph> g =
vtkSmartPointer<vtkMutableDirectedGraph>::New();
vtkSmartPointer<vtkDoubleArray> latitude =
vtkSmartPointer<vtkDoubleArray>::New();
latitude->SetName("latitude");
vtkSmartPointer<vtkDoubleArray> longitude =
vtkSmartPointer<vtkDoubleArray>::New();
longitude->SetName("longitude");
for(int lat = -90; lat <= 90; lat += 10)
{
for(int lon = -180; lon <= 180; lon += 20)
{
g->AddVertex();
latitude->InsertNextValue(lat);
longitude->InsertNextValue(lon);
}
}
g->GetVertexData()->AddArray(latitude);
g->GetVertexData()->AddArray(longitude);
vtkSmartPointer<vtkGeoAssignCoordinates> assign =
vtkSmartPointer<vtkGeoAssignCoordinates>::New();
#if VTK_MAJOR_VERSION <= 5
assign->SetInput(g);
#else
assign->SetInputData(g);
#endif
assign->SetLatitudeArrayName("latitude");
assign->SetLongitudeArrayName("longitude");
assign->SetGlobeRadius(1.0);
assign->Update();
vtkSmartPointer<vtkGraphMapper> mapper =
vtkSmartPointer<vtkGraphMapper>::New();
mapper->SetInputConnection(assign->GetOutputPort());
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
vtkSmartPointer<vtkRenderer> ren =
vtkSmartPointer<vtkRenderer>::New();
ren->AddActor(actor);
vtkSmartPointer<vtkRenderWindowInteractor> iren =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
vtkSmartPointer<vtkRenderWindow> win =
vtkSmartPointer<vtkRenderWindow>::New();
win->AddRenderer(ren);
win->SetInteractor(iren);
ren->ResetCamera();
iren->Initialize();
iren->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(GeoAssignCoordinates)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(GeoAssignCoordinates MACOSX_BUNDLE GeoAssignCoordinates.cxx)
target_link_libraries(GeoAssignCoordinates ${VTK_LIBRARIES})
Download and Build GeoAssignCoordinates
Click here to download GeoAssignCoordinates and its CMakeLists.txt file. Once the tarball GeoAssignCoordinates.tar has been downloaded and extracted,
cd GeoAssignCoordinates/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:
./GeoAssignCoordinates
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.