FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Impleneted byte swap for use between machines with different endians.

Browse Source
This commit is contained in:
Don BURNS 2002-04-22 23:54:13 +00:00
parent 043016ce1d
commit ecd2c73c55
1 changed files with 45 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
src/Demos/osgcluster/osgcluster.cpp
View File

@ -20,11 +20,27 @@
#include "receiver.h"
#include "broadcaster.h"
typedef unsigned char * BytePtr;
template <class T>
inline void swapBytes( T &s )
{
if( sizeof( T ) == 1 ) return;
T d = s;
BytePtr sptr = (BytePtr)&s;
BytePtr dptr = &(((BytePtr)&d)[sizeof(T)-1]);
for( int i = 0; i < sizeof(T); i++ )
*(sptr++) = *(dptr--);
}
class CameraPacket {
public:
CameraPacket():_masterKilled(false) {}
CameraPacket():_masterKilled(false)
{
_byte_order = 0x12345678;
}
void setPacket(const osg::Camera& camera,const osg::FrameStamp* frameStamp)
{
@ -56,10 +72,34 @@ class CameraPacket {
// rather than this frame stamp as it can get overwritten.
sv.setFrameStamp(new osg::FrameStamp(_frameStamp));
}
void checkByteOrder( void )
{
if( _byte_order == 0x78563412 ) // We're backwards
{
swapBytes( _byte_order );
swapBytes( _masterKilled );
swapBytes( _eye[0] );
swapBytes( _eye[1] );
swapBytes( _eye[2] );
swapBytes( _center[0] );
swapBytes( _center[1] );
swapBytes( _center[2] );
swapBytes( _up[0] );
swapBytes( _up[1] );
swapBytes( _up[2] );
swapBytes( _attachMatrix );
for( int i = 0; i < 16; i++ )
swapBytes( _matrix.ptr()[i] );
}
}
void setMasterKilled(const bool flag) { _masterKilled = flag; }
const bool getMasterKilled() const { return _masterKilled; }
unsigned long _byte_order;
bool _masterKilled;
osg::Vec3 _eye;
osg::Vec3 _center;
@ -139,6 +179,9 @@ class MySceneView : public osgUtil::SceneView {
_rc.setBuffer(&cp, sizeof( CameraPacket ));
_rc.sync();
cp.checkByteOrder();
cp.getCamera(*getCamera(),_camera_offset);
cp.getSceneViewUpdate(*this);
@ -161,6 +204,7 @@ class MySceneView : public osgUtil::SceneView {
int _socketNumber;
float _camera_fov;
float _camera_offset;
unsigned long _byte_order;
Broadcaster _bc;