# FindOpenSceneGraph

Find OpenSceneGraph (3D graphics application programming interface)

This module searches for the OpenSceneGraph core "osg" library as well as `FindOpenThreads`, and whatever additional `COMPONENTS` (nodekits) that you specify.

    See http://www.openscenegraph.org

NOTE: To use this module effectively you must either require `CMake >= 2.6.3` with `cmake_minimum_required(VERSION 2.6.3)` or download and place `FindOpenThreads`, `Findosg` functions, `Findosg` and `Find<etc>.cmake` files into your `CMAKE_MODULE_PATH`.

This module accepts the following variables (note mixed case)

    OpenSceneGraph_DEBUG - Enable debugging output

    OpenSceneGraph_MARK_AS_ADVANCED - Mark cache variables as advanced
                                      automatically

The following environment variables are also respected for finding the OSG and it's various components. `CMAKE_PREFIX_PATH` can also be used for this (see `find_library()` CMake documentation).

`<MODULE>_DIR`

  (where `MODULE` is of the form "OSGVOLUME" and there is a `FindosgVolume`.cmake` file)

`OSG_DIR`
`OSGDIR`
`OSG_ROOT`

[CMake 2.8.10]: The CMake variable `OSG_DIR` can now be used as well to influence detection, instead of needing to specify an environment variable.

This module defines the following output variables:

    OPENSCENEGRAPH_FOUND - Was the OSG and all of the specified components found?

    OPENSCENEGRAPH_VERSION - The version of the OSG which was found

    OPENSCENEGRAPH_INCLUDE_DIRS - Where to find the headers

    OPENSCENEGRAPH_LIBRARIES - The OSG libraries

================================== Example Usage:

    find_package(OpenSceneGraph 2.0.0 REQUIRED osgDB osgUtil)
        # libOpenThreads & libosg automatically searched
    include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS})

    add_executable(foo foo.cc)
    target_link_libraries(foo ${OPENSCENEGRAPH_LIBRARIES})