Add handling for background color RGBA

CMakeLists.txt

@@ -372,6 +372,15 @@ check_cxx_source_compiles("
   #include <Inventor/VRMLnodes/SoVRMLViewpoint.h>
   int main() { SoVRMLViewpoint * p = new SoVRMLViewpoint; return 0; }
 " HAVE_SOVRMLVIEWPOINT)
+check_cxx_source_compiles("
+  #include <Inventor/SbColorRGBA.h>
+  int main() { SbColorRGBA c; return 0; }
+" HAVE_SBCOLORRGBA_H)
+check_cxx_source_compiles("
+  #include <Inventor/SbColorRGBA.h>
+  #include <Inventor/SoSceneManager.h>
+  int main() { SoSceneManager * p = new SoSceneManager; SbColorRGBA c = p->getBackgroundColorRGBA(); return 0; }
+" HAVE_SOSCENEMANAGER_GETBACKGROUNDCOLORRGBA)
 
 unset(CMAKE_REQUIRED_LIBRARIES)
 

src/config.h.cmake.in

@@ -47,6 +47,9 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #cmakedefine HAVE_INTTYPES_H 1
 
+/* Define to 1 if you have the <Inventor/SbColorRGBA.h> header file. */
+#cmakedefine HAVE_SBCOLORRGBA_H 1
+
 /* Define to 1 if you have the <memory.h> header file. */
 #cmakedefine HAVE_MEMORY_H 1
 
@@ -62,6 +65,9 @@
 /* define if pthread's struct timespec uses nsecs and not usecs */
 #cmakedefine HAVE_PTHREAD_TIMESPEC_NSEC 1
 
+/* Define to enable use of Inventor feature */
+#cmakedefine HAVE_SOSCENEMANAGER_GETBACKGROUNDCOLORRGBA 1
+
 /* Define to enable use of Inventor feature */
 #cmakedefine HAVE_SBIMAGE_ADDREADIMAGECB 1