Box
vtk-examples/Cxx/Utilities/Box
Question
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Code¶
Box.cxx
#include <vtkBox.h>
int main(int, char*[])
{
// Define a box
double bounds[6] = {-1, 1, -1, 1, -1, 1};
// Define a ray
double rayOrigin[3] = {-5.0, 0, 0};
double rayDirection[3] = {1, 0, 0};
double intersection[3];
double t;
auto hit =
vtkBox::IntersectBox(bounds, rayOrigin, rayDirection, intersection, t);
if (!hit)
{
std::cout << "Not hit!" << std::endl;
}
else
{
// Intersection should be (-1.0, 0, 0)
std::cout << "Intersection is " << intersection[0] << " " << intersection[1]
<< " " << intersection[2] << std::endl;
std::cout << "t is " << t << std::endl;
}
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(Box)
find_package(VTK COMPONENTS
vtkCommonDataModel
QUIET
)
if (NOT VTK_FOUND)
message("Skipping Box: ${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(Box MACOSX_BUNDLE Box.cxx )
target_link_libraries(Box PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(Box MACOSX_BUNDLE Box.cxx )
target_link_libraries(Box PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS Box
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build Box¶
Click here to download Box and its CMakeLists.txt file. Once the tarball Box.tar has been downloaded and extracted,
cd Box/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:
./Box
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.