From Corbin Holtz, "I have completed my mods to the OpenFlight loader (modified files are

attached):
   * Light point strings using the REPLICATE opcode should now be supported
(>=15.6?)

   * Directional lights should now work as in Performer using a viewing
frustrum defined by a direction vector, horizontal angular width, vertical
angular width, and roll angle about the direction vector.  The current
directional light implementation had some bad assumptions which caused
problems with direction vectors not on the XY plane.

   * IVE and OSG reader/writers were updated as appropriate"

src/osgPlugins/ive/DirectionalSector.cpp

@@ -0,0 +1,47 @@
+/**********************************************************************
+ *
+ *	FILE:			DirectionalSector.cpp
+ *
+ *	DESCRIPTION:	Read/Write osgSim::DirectionalSector in binary format to disk.
+ *
+ *	CREATED BY:		Auto generated by iveGenerator.exe
+ *					and later modified by Rune Schmidt Jensen.
+ *
+ *	HISTORY:		Created 9.9.2003
+ *
+ **********************************************************************/
+
+#include "Exception.h"
+#include "DirectionalSector.h"
+
+using namespace ive;
+
+void DirectionalSector::write(DataOutputStream* out){
+	// Write DirectionalSector's identification.
+	out->writeInt(IVEDIRECTIONALSECTOR);
+	// Write DirectionalSector's properties.
+	out->writeVec3(getDirection());
+   out->writeFloat(getHorizLobeAngle());
+   out->writeFloat(getVertLobeAngle());
+   out->writeFloat(getLobeRollAngle());
+   out->writeFloat(getFadeAngle());
+}
+
+void DirectionalSector::read(DataInputStream* in){
+	// Peek on DirectionalSector's identification.
+	int id = in->peekInt();
+	if(id == IVEDIRECTIONALSECTOR){
+		// Read DirectionalSector's identification.
+		id = in->readInt();
+		// Read DirectionalSector's properties
+		setDirection(in->readVec3());
+      setHorizLobeAngle(in->readFloat());
+      setVertLobeAngle(in->readFloat());
+      setLobeRollAngle(in->readFloat());
+      setFadeAngle(in->readFloat());
+
+	}
+	else{
+		throw Exception("DirectionalSector::read(): Expected DirectionalSector identification.");
+	}
+}

src/osgPlugins/ive/DirectionalSector.h

@@ -0,0 +1,15 @@
+#ifndef IVE_DIRECTIONALSECTOR
+#define IVE_DIRECTIONALSECTOR 1
+
+#include <osgSim/Sector>
+#include "ReadWrite.h"
+
+namespace ive{
+class DirectionalSector : public osgSim::DirectionalSector, public ReadWrite {
+public:
+	void write(DataOutputStream* out);
+	void read(DataInputStream* in);
+};
+}
+
+#endif

src/osgPlugins/ive/GNUmakefile

@@ -65,6 +65,7 @@ CXXFILES =\
 	AzimSector.cpp\
 	BlinkSequence.cpp\
 	ConeSector.cpp\
+	DirectionalSector.cpp\
 	ElevationSector.cpp\
 	LightPoint.cpp\
 	LightPointNode.cpp\

src/osgPlugins/ive/LightPoint.cpp

@@ -18,6 +18,7 @@
 #include "ElevationSector.h"
 #include "AzimSector.h"
 #include "ConeSector.h"
+#include "DirectionalSector.h"
 
 using namespace ive;
 
@@ -47,6 +48,9 @@ void LightPoint::write(DataOutputStream* out){
 		else if(dynamic_cast<osgSim::ConeSector*>(_sector.get())){
 			((ive::ConeSector*)(_sector.get()))->write(out);
 		}
+		else if(dynamic_cast<osgSim::DirectionalSector*>(_sector.get())){
+			((ive::DirectionalSector*)(_sector.get()))->write(out);
+		}
 		else
 			throw Exception("Unknown sector in LightPoint::write()");
 	}
@@ -99,6 +103,11 @@ void LightPoint::read(DataInputStream* in){
 				((ive::ConeSector*)(sector))->read(in);
 				_sector = sector;
 			}
+			else if(attributeID == IVEDIRECTIONALSECTOR){
+				sector = new osgSim::DirectionalSector();
+				((ive::DirectionalSector*)(sector))->read(in);
+				_sector = sector;
+			}
 			else
 				throw Exception("Unknown sector in LightPoint::read()");
 		}

src/osgPlugins/ive/ReadWrite.h

@@ -92,6 +92,7 @@ namespace ive {
 #define IVEMULTISWITCH				        0x00100008
 
 #define IVEVISIBILITYGROUP			    0x00100009
+#define IVEDIRECTIONALSECTOR         0x0010000A
 
 class ReadWrite{