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
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.