ColorTransferFunction
VTKExamples/Cxx/Utilities/ColorTransferFunction
Description¶
This example demonstrates how to map the values (0.0 to 10.0) to the colors (red to green).
Code¶
ColorTransferFunction.cxx
#include <vtkSmartPointer.h> #include <vtkColorTransferFunction.h> int main(int, char *[]) { vtkSmartPointer<vtkColorTransferFunction> colorTransferFunction = vtkSmartPointer<vtkColorTransferFunction>::New(); colorTransferFunction->AddRGBPoint(0.0, 1, 0, 0); colorTransferFunction->AddRGBPoint(10.0, 0, 1, 0); double color[3]; colorTransferFunction->GetColor(1.0, color); std::cout << color[0] << " " << color[1] << " " << color[2] << std::endl; colorTransferFunction->GetColor(5.0, color); std::cout << color[0] << " " << color[1] << " " << color[2] << std::endl; return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ColorTransferFunction) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ColorTransferFunction MACOSX_BUNDLE ColorTransferFunction.cxx) target_link_libraries(ColorTransferFunction ${VTK_LIBRARIES})
Download and Build ColorTransferFunction¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download ColorTransferFunction and its CMakeLists.txt file. Once the tarball ColorTransferFunction.tar has been downloaded and extracted,
cd ColorTransferFunction/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:
./ColorTransferFunction
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.