SurfacePlot
VTKExamples/Cxx/Plotting/SurfacePlot
Description¶
This examples creates a vtkChartXYZ that contains a vtkPlotSurface.
Code¶
SurfacePlot.cxx
#include <vtkNew.h> #include <vtkPlotSurface.h> #include <vtkNamedColors.h> #include <vtkChartXYZ.h> #include <vtkPen.h> #include <vtkContextMouseEvent.h> #include <vtkContextView.h> #include <vtkContextScene.h> #include <vtkFloatArray.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkTable.h> #include <vtkRegressionTestImage.h> #include <vtkUnsignedCharArray.h> #include <vtkVector.h> int main(int , char * []) { vtkNew<vtkNamedColors> colors; vtkNew<vtkChartXYZ> chart; chart->SetGeometry(vtkRectf(10.0, 10.0, 630, 470)); vtkNew<vtkPlotSurface> plot; vtkNew<vtkContextView> view; view->GetRenderer()->SetBackground(colors->GetColor3d("Silver").GetData()); view->GetRenderWindow()->SetSize(640, 480); view->GetScene()->AddItem(chart); // Create a surface vtkNew<vtkTable> table; vtkIdType numPoints = 70; float inc = 9.424778 / (numPoints - 1); for (vtkIdType i = 0; i < numPoints; ++i) { vtkNew<vtkFloatArray> arr; table->AddColumn(arr); } table->SetNumberOfRows(static_cast<vtkIdType>(numPoints)); for (vtkIdType i = 0; i < numPoints; ++i) { float x = i * inc; for (vtkIdType j = 0; j < numPoints; ++j) { float y = j * inc; table->SetValue(i, j, sin(sqrt(x*x + y*y))); } } // Set up the surface plot we wish to visualize and add it to the chart. plot->SetXRange(0, 10.0); plot->SetYRange(0, 10.0); plot->SetInputData(table); plot->GetPen()->SetColorF(colors->GetColor3d("Tomato").GetData()); chart->AddPlot(plot); view->GetRenderWindow()->SetMultiSamples(0); view->GetInteractor()->Initialize(); view->GetRenderWindow()->Render(); // rotate vtkContextMouseEvent mouseEvent; mouseEvent.SetInteractor(view->GetInteractor()); vtkVector2i pos; vtkVector2i lastPos; mouseEvent.SetButton(vtkContextMouseEvent::LEFT_BUTTON); lastPos.Set(100, 50); mouseEvent.SetLastScreenPos(lastPos); pos.Set(150, 100); mouseEvent.SetScreenPos(pos); vtkVector2d sP(pos.Cast<double>().GetData()); vtkVector2d lSP(lastPos.Cast<double>().GetData()); vtkVector2d screenPos(mouseEvent.GetScreenPos().Cast<double>().GetData()); vtkVector2d lastScreenPos(mouseEvent.GetLastScreenPos().Cast<double>().GetData()); chart->MouseMoveEvent(mouseEvent); view->GetInteractor()->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR) project(SurfacePlot) find_package(VTK COMPONENTS vtkChartsCore vtkCommonColor vtkCommonCore vtkCommonDataModel vtkInteractionStyle vtkRenderingContext2D vtkRenderingContextOpenGL2 vtkRenderingCore vtkRenderingFreeType vtkRenderingOpenGL2 vtkTestingRendering vtkViewsContext2D QUIET) if (NOT VTK_FOUND) message("Skipping SurfacePlot: ${VTK_NOT_FOUND_MESSAGE}") return () endif() message (STATUS "VTK_VERSION: ${VTK_VERSION}") if (VTK_VERSION VERSION_LESS "8.90.0") # old system include(${VTK_USE_FILE}) add_executable(SurfacePlot MACOSX_BUNDLE SurfacePlot.cxx ) target_link_libraries(SurfacePlot PRIVATE ${VTK_LIBRARIES}) else () # include all components add_executable(SurfacePlot MACOSX_BUNDLE SurfacePlot.cxx ) target_link_libraries(SurfacePlot PRIVATE ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS SurfacePlot MODULES ${VTK_LIBRARIES} ) endif ()
Download and Build SurfacePlot¶
Click here to download SurfacePlot and its CMakeLists.txt file. Once the tarball SurfacePlot.tar has been downloaded and extracted,
cd SurfacePlot/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:
./SurfacePlot
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.