OffsetMsg.h

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#ifndef GCP_UTIL_OFFSETMSG_H
#define GCP_UTIL_OFFSETMSG_H

namespace gcp {
  namespace util {
    
    class OffsetMsg {
    public:
      
      enum Type {
    MOUNT,
    EQUAT,
    TV,
    SKY
      };
      
      enum Mode {
    ADD, // Add the offsets to the current values
    SET,  // Replace the current values with the passed offsets
    FIXED,
    POLAR
      };
      
      enum Axis {
    NONE  = 0x0, 
    AZ    = 0x1, 
    EL    = 0x2,
    PA    = 0x4,
    RA    = 0x8,
    DEC   = 0x16,
    X     = 0x32,
    Y     = 0x64,
    UP    = 0x128,
    RIGHT = 0x256,
      };
      
      union {
    struct {
      double az;
      double el;
      double pa;
    } mount;
    
    struct {
      double ra;
      double dec;
    } equat;
    
    struct {
      double up;
      double right;
    } tv;
    
    struct {
      double x;
      double y;
    } sky;
    
      } body;
      
      Type type;
      Mode mode;
      Axis axes;
      
      inline void packMountOffsets(Mode offMode, Axis offAxes, 
                   double az, double el, double pa) 
    {
      type = MOUNT;
      mode = offMode;
      axes = offAxes;
      
      body.mount.az = az;
      body.mount.el = el;
      body.mount.pa = pa;
    }
      
      inline void packEquatOffsets(Mode offMode, Axis offAxes, 
                   double ra, double dec) 
    {
      type = EQUAT;
      mode = offMode;
      axes = offAxes;
      
      body.equat.ra  = ra;
      body.equat.dec = dec;
    }
      
      inline void packTvOffsets(double up, double right) 
    {
      type = TV;
      mode = ADD;
      axes = (Axis)(UP|RIGHT);
      
      body.tv.up          = up;
      body.tv.right       = right;
    }
      
      inline void packSkyOffsets(Mode offMode, Axis offAxes, 
                 double x, double y)
    {
      type = SKY;
      mode = offMode;
      axes = offAxes;
      
      body.sky.x  = x;
      body.sky.y  = y;
    }
      
    }; // End class OffsetMsg
    
  } // End namespace util
} // End namespace gcp



#endif // End #ifndef GCP_UTIL_OFFSETMSG_H