PlaneSourceDemo
VTKEx/Cxx/GeometricObjects/PlaneSourceDemo
Description¶
The example displays the various instance variables that define a vtkPlaneSource.
Question
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Code¶
PlaneSourceDemo.cxx
#include <vtkSmartPointer.h>
#include <vtkPlaneSource.h>
#include <vtkSphereSource.h>
#include <vtkArrowSource.h>
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkTransform.h>
#include <vtkTransformPolyDataFilter.h>
#include <vtkNamedColors.h>
#include <vtkColor.h>
#include <vtkLegendBoxActor.h>
#include <vtkMinimalStandardRandomSequence.h>
#include <array>
namespace
{
vtkSmartPointer<vtkPolyData> CreateArrow(
double &length,
std::array<double,3> &startPoint,
std::array<double,3> &endPoint);
}
int main(int, char *argv[])
{
vtkSmartPointer<vtkNamedColors> colors =
vtkSmartPointer<vtkNamedColors>::New();
vtkColor3d backgroundColor = colors->GetColor3d("SlateGray");
vtkColor3d legendBackgroundColor = colors->GetColor3d("Black");
vtkColor3d originColor = colors->GetColor3d("Tomato");
vtkColor3d centerColor = colors->GetColor3d("Banana");
vtkColor3d point1Color = colors->GetColor3d("Peru");
vtkColor3d point2Color = colors->GetColor3d("Bisque");
vtkColor3d xAxisColor = colors->GetColor3d("lime");
vtkColor3d yAxisColor = colors->GetColor3d("orange");
vtkColor3d normalColor = colors->GetColor3d("Raspberry");
// Create actors
vtkSmartPointer<vtkPlaneSource> planeSource =
vtkSmartPointer<vtkPlaneSource>::New();
planeSource->SetOrigin(0.0, 0.0, 0.0);
planeSource->SetPoint1(1,0, 0);
planeSource->SetPoint2(0,1.0, 0);
planeSource->Update();
std::array<double, 6> bounds;
planeSource->GetOutput()->GetBounds(bounds.data());
double length = std::max(bounds[1] - bounds[0], bounds[3] - bounds[2]);
vtkSmartPointer<vtkPolyDataMapper> planeMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
planeMapper->SetInputConnection(planeSource->GetOutputPort());
vtkSmartPointer<vtkActor> planeActor =
vtkSmartPointer<vtkActor>::New();
planeActor->SetMapper(planeMapper);
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->SetRadius(length * .04);
vtkSmartPointer<vtkPolyDataMapper> originMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
originMapper->SetInputConnection(sphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> originActor =
vtkSmartPointer<vtkActor>::New();
originActor->SetPosition(planeSource->GetOrigin());
originActor->SetMapper(originMapper);
originActor->GetProperty()->SetDiffuseColor(originColor.GetData());
vtkSmartPointer<vtkPolyDataMapper> centerMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
centerMapper->SetInputConnection(sphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> centerActor =
vtkSmartPointer<vtkActor>::New();
centerActor->SetPosition(planeSource->GetCenter());
centerActor->SetMapper(centerMapper);
centerActor->GetProperty()->SetDiffuseColor(centerColor.GetData());
vtkSmartPointer<vtkPolyDataMapper> point1Mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
point1Mapper->SetInputConnection(sphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> point1Actor =
vtkSmartPointer<vtkActor>::New();
point1Actor->SetPosition(planeSource->GetPoint1());
point1Actor->SetMapper(point1Mapper);
point1Actor->GetProperty()->SetDiffuseColor(point1Color.GetData());
vtkSmartPointer<vtkPolyDataMapper> point2Mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
point2Mapper->SetInputConnection(sphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> point2Actor =
vtkSmartPointer<vtkActor>::New();
point2Actor->SetPosition(planeSource->GetPoint2());
point2Actor->SetMapper(point2Mapper);
point2Actor->GetProperty()->SetDiffuseColor(point2Color.GetData());
std::array<double, 3> center;
std::array<double, 3> origin;
std::array<double, 3> normal;
std::array<double, 3> point1;
std::array<double, 3> point2;
for (auto i = 0; i < 3; ++i)
{
point1[i] = planeSource->GetPoint1()[i];
point2[i] = planeSource->GetPoint2()[i];
origin[i] = planeSource->GetOrigin()[i];
center[i] = planeSource->GetCenter()[i];
normal[i] = planeSource->GetNormal()[i] * length;
}
vtkSmartPointer<vtkPolyData> xAxisPolyData =
CreateArrow(length, origin, point1);
vtkSmartPointer<vtkPolyDataMapper> xAxisMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
xAxisMapper->SetInputData(xAxisPolyData);
vtkSmartPointer<vtkActor> xAxisActor =
vtkSmartPointer<vtkActor>::New();
xAxisActor->SetMapper(xAxisMapper);
xAxisActor->GetProperty()->SetDiffuseColor(xAxisColor.GetData());
vtkSmartPointer<vtkPolyData> yAxisPolyData =
CreateArrow(length, origin, point2);
vtkSmartPointer<vtkPolyDataMapper> yAxisMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
yAxisMapper->SetInputData(yAxisPolyData);
vtkSmartPointer<vtkActor> yAxisActor =
vtkSmartPointer<vtkActor>::New();
yAxisActor->SetMapper(yAxisMapper);
yAxisActor->GetProperty()->SetDiffuseColor(yAxisColor.GetData());
vtkSmartPointer<vtkPolyData> normalPolyData =
CreateArrow(length, origin, normal);
vtkSmartPointer<vtkPolyDataMapper> normalMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
normalMapper->SetInputData(normalPolyData);
vtkSmartPointer<vtkActor> normalActor =
vtkSmartPointer<vtkActor>::New();
normalActor->SetMapper(normalMapper);
normalActor->GetProperty()->SetDiffuseColor(normalColor.GetData());
// Create the RenderWindow, Renderer
//
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkLegendBoxActor> legend =
vtkSmartPointer<vtkLegendBoxActor>::New();
legend->SetNumberOfEntries(7);
legend->UseBackgroundOn();
legend->SetBackgroundColor(legendBackgroundColor.GetData());
legend->GetPositionCoordinate()->SetValue(.7, .7);
legend->GetPosition2Coordinate()->SetValue(.3, .3);
int entry = 0;
legend->SetEntry(entry++, sphereSource->GetOutput(), "center",
centerColor.GetData());
legend->SetEntry(entry++, sphereSource->GetOutput(), "origin",
originColor.GetData());
legend->SetEntry(entry++, sphereSource->GetOutput(), "point1",
point1Color.GetData());
legend->SetEntry(entry++, sphereSource->GetOutput(), "point2",
point2Color.GetData());
legend->SetEntry(entry++, xAxisPolyData, "xAxis",
xAxisColor.GetData());
legend->SetEntry(entry++, xAxisPolyData, "yAxis",
yAxisColor.GetData());
legend->SetEntry(entry++, xAxisPolyData, "normal",
normalColor.GetData());
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
renderWindow->SetSize(640, 480);
vtkSmartPointer<vtkRenderWindowInteractor> interactor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
interactor->SetRenderWindow(renderWindow);
renderer->SetBackground(backgroundColor.GetData());
renderer->AddActor(planeActor);
renderer->AddActor(originActor);
renderer->AddActor(centerActor);
renderer->AddActor(point1Actor);
renderer->AddActor(point2Actor);
renderer->AddActor(xAxisActor);
renderer->AddActor(yAxisActor);
renderer->AddActor(normalActor);
renderer->AddActor(legend);
renderWindow->Render();
renderer->GetActiveCamera()->SetPosition(1, 0, 0);
renderer->GetActiveCamera()->SetFocalPoint(0, 1, 0);
renderer->GetActiveCamera()->SetViewUp(0, 0, 1);
renderer->GetActiveCamera()->Azimuth(30);
renderer->GetActiveCamera()->Elevation(30);
renderer->ResetCamera();
renderWindow->Render();
interactor->Start();
return EXIT_SUCCESS;
}
namespace
{
vtkSmartPointer<vtkPolyData> CreateArrow(
double &pdLength,
std::array<double,3> &startPoint,
std::array<double,3> &endPoint)
{
vtkSmartPointer<vtkPolyData> polyData;
//Create an arrow.
vtkSmartPointer<vtkArrowSource> arrowSource =
vtkSmartPointer<vtkArrowSource>::New();
arrowSource->SetShaftRadius(pdLength * .01);
arrowSource->SetShaftResolution(20);
arrowSource->SetTipLength(pdLength * .1);
arrowSource->SetTipRadius(pdLength * .05);
arrowSource->SetTipResolution(20);
// Compute a basis
std::array<double, 3> normalizedX;
std::array<double, 3> normalizedY;
std::array<double, 3> normalizedZ;
// The X axis is a vector from start to end
vtkMath::Subtract(endPoint.data(), startPoint.data(), normalizedX.data());
double length = vtkMath::Norm(normalizedX.data());
vtkMath::Normalize(normalizedX.data());
// The Z axis is an arbitrary vector cross X
vtkSmartPointer<vtkMinimalStandardRandomSequence> rng =
vtkSmartPointer<vtkMinimalStandardRandomSequence>::New();
rng->SetSeed(8775070); // For testing.
std::array<double, 3> arbitrary;
for (auto i = 0; i < 3; ++i)
{
rng->Next();
arbitrary[i] = rng->GetRangeValue(-10, 10);
}
vtkMath::Cross(normalizedX.data(), arbitrary.data(), normalizedZ.data());
vtkMath::Normalize(normalizedZ.data());
// The Y axis is Z cross X
vtkMath::Cross(normalizedZ.data(), normalizedX.data(), normalizedY.data());
vtkSmartPointer<vtkMatrix4x4> matrix =
vtkSmartPointer<vtkMatrix4x4>::New();
// Create the direction cosine matrix
matrix->Identity();
for (auto i = 0; i < 3; i++)
{
matrix->SetElement(i, 0, normalizedX[i]);
matrix->SetElement(i, 1, normalizedY[i]);
matrix->SetElement(i, 2, normalizedZ[i]);
}
// Apply the transforms
vtkSmartPointer<vtkTransform> transform =
vtkSmartPointer<vtkTransform>::New();
transform->Translate(startPoint.data());
transform->Concatenate(matrix);
transform->Scale(length, length, length);
// Transform the polydata
vtkSmartPointer<vtkTransformPolyDataFilter> transformPD =
vtkSmartPointer<vtkTransformPolyDataFilter>::New();
transformPD->SetTransform(transform);
transformPD->SetInputConnection(arrowSource->GetOutputPort());
transformPD->Update();
polyData = transformPD->GetOutput();
return polyData;
}
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(PlaneSourceDemo)
find_package(VTK COMPONENTS
vtkvtkCommonColor
vtkvtkCommonCore
vtkvtkCommonDataModel
vtkvtkCommonTransforms
vtkvtkFiltersGeneral
vtkvtkFiltersSources
vtkvtkInteractionStyle
vtkvtkRenderingAnnotation
vtkvtkRenderingContextOpenGL2
vtkvtkRenderingCore
vtkvtkRenderingFreeType
vtkvtkRenderingGL2PSOpenGL2
vtkvtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
message("Skipping PlaneSourceDemo: ${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(PlaneSourceDemo MACOSX_BUNDLE PlaneSourceDemo.cxx )
target_link_libraries(PlaneSourceDemo PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(PlaneSourceDemo MACOSX_BUNDLE PlaneSourceDemo.cxx )
target_link_libraries(PlaneSourceDemo PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS PlaneSourceDemo
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build PlaneSourceDemo¶
Click here to download PlaneSourceDemo and its CMakeLists.txt file. Once the tarball PlaneSourceDemo.tar has been downloaded and extracted,
cd PlaneSourceDemo/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:
./PlaneSourceDemo
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.