hostdata.h

利用VC++和OpenGVS结合编的一个关于火车运行的三维模拟程序。是OpenGVS三维初学者的应该参考的好范例。

/*****************************************************************************
*
*    hostdata.h -- 
*
*	Data interface when network communications are desired
*
******************************************************************************/
#ifndef HOSTDATA_H
#define HOSTDATA_H

#include <gv_cam.h>
#include <gv_chn.h>
#include <gv_obj.h>
#include <dnet.h>
#include <tparse.h>
#include "skt.h"
#include "train.h"

#define HOSTDATA_NAME_BUFLEN 1024

#define APP_EVENT_SPOTLIGHT_STATE       (TCEVENT_OPCODE_USER_EVENT_START+0)
#define APP_EVENT_SPOTLIGHT_CONE_STATE  (TCEVENT_OPCODE_USER_EVENT_START+1)
#define APP_EVENT_SPOTLIGHT_FALLOFF     (TCEVENT_OPCODE_USER_EVENT_START+2)
#define APP_EVENT_SPOTLIGHT_ATTENUATION (TCEVENT_OPCODE_USER_EVENT_START+3)
#define APP_EVENT_SEASON_CHANGE     	(TCEVENT_OPCODE_USER_EVENT_START+4)

#ifdef __cplusplus
extern "C" {
#endif

#define BASE		0	/* Base platform */

/*  Data sent every frame from master process to slave processes.
    Be sure to maintain alignment of doubles at 8-byte boundaries.
    */
struct dnet_host_data_s {

    Dnet_gen_data dhd_dgd ;		/*  Common to all dnet code */

    /* --------- Continous data from host (sent every frame) -------------- */
    int          fixed_size;		/* offset of vnamebuf for consistency */
    					/*  checking between master / slave */

    int          frame;			/* Current host (master) frame #    */
    G_State      ownstate;		/* Ownship graphics state           */
    int          reserved_00;           /* Keep byte alignment for doubles  */

    double	 simtime;		/* Current simulation time          */
    double	 dt;			/* Current integration delta time   */

    G_Position_d ownpos;		/* Ownship vehicle position         */
    G_Rotation_d ownrot;		/* Ownship vehicle rotation angles  */
    G_Position_d campos;		/* World position of camera         */
    G_Rotation_d camrot;		/* World rotation of camera         */

    G_Position_d vpos[NUM_VEHICLES];	/* Vehicle position                 */
    G_Rotation_d vrot[NUM_VEHICLES];	/* Vehicle rotation angles          */

    G_State      vstate[NUM_VEHICLES];	/* Vehicle state (G_ON, G_OFF)      */
    G_Vector3    sun_direction;         /* Sun direction vector             */


    /* --------- Discrete data from host (only when something changes) ---- */
    int         discrete_count;		/* Each time something below is 
					    changed, incremented so each
    					    process can update accordingly  */
    Tevent      event;                  /* Send the event data              */
    G_Name      vname[NUM_VEHICLES];    /* Instance names                   */
} ;

/* Globals */
extern Dnet_host_data host_data;
extern int host_data_length;
extern GV_Obi vobi[NUM_VEHICLES];	/* Object instances for vehicles     */

/* Function prototypes: */
void event_discrete_change( void ); 

/* Application specific stuff */
int  host_slave_get( GV_Obi ownship, GV_Camera ownship_camera ); 
int  host_master_put( GV_Obi ownship, GV_Camera ownship_camera );
int  host_master_init( GV_Obi ownship, GV_Camera ownship_camera );
int  host_discrete( void );

#ifdef __cplusplus
}
#endif

#endif /* HOSTDATA_H */