コード例 #1
0
void VirtualEnvironmentFinal(void)
{
    int i;
    
    if (objects) {
        // Unload all objects.
        for (i = 0; i < objectCount; i++) {
            arOSGUnloadModel(VirtualEnvironment_AROSG, i);
        }
        free(objects);
        objects = NULL;
        objectCount = 0;
    }
    
    // Cleanup all-model state.
    if (VirtualEnvironment_AROSG) {
        arOSGFinal(VirtualEnvironment_AROSG);
        VirtualEnvironment_AROSG = NULL;
    }
}
コード例 #2
0
int VirtualEnvironmentInit(const char *objectListFile)
{
    int      numObjects;
    FILE     *fp;
    char     buf[MAXPATHLEN];
    char     objectFullpath[MAXPATHLEN];
    int      i;
    ARdouble translation[3], rotation[4], scale[3];
    int      lightingFlag, markerIndex;

    ARLOGd("Initialising Virtual Environment.\n");

    // One-time OSG initialization.
    if (!VirtualEnvironment_AROSG)
    {
        VirtualEnvironment_AROSG = arOSGInit();
        if (!VirtualEnvironment_AROSG)
        {
            ARLOGe("Error: unable to init arOSG library.\n");
            return (0);
        }
    }

    // Locate and open the objects description file.
    if ((fp = fopen(objectListFile, "r")) == NULL)
    {
        ARLOGe("Error: unable to open object data file '%s'.\n", objectListFile);
        perror(NULL);
        goto bail1;
    }
    else
    {
        ARLOGe("Error: open object data file '%s'.\n", objectListFile);
    }

    // First line is number of objects to read.
    numObjects = 0;
    get_buff(buf, MAXPATHLEN, fp, 1);
    if (sscanf(buf, "%d", &numObjects) != 1)
    {
        ARLOGe("Error: unable to read number of objects to load from object data file.\n");
        goto bail2;
    }

    // Allocate space for the objects.
    if (objects)
    {
        free(objects); objects = NULL;
        objectCount            = 0;
    }

    objects = (VEObject*)calloc(numObjects, sizeof(VEObject));
    if (!objects)
    {
        goto bail2;
    }

    ARLOGd("Reading %d objects.\n", numObjects);

    for (i = 0; i < numObjects; i++)
    {
        // Read in all info relating to the object.

        // Read model file path (relative to objects description file).
        if (!get_buff(buf, MAXPATHLEN, fp, 1))
        {
            ARLOGe("Error: unable to read model file name from object data file.\n");
            goto bail3;
        }

        if (!arUtilGetDirectoryNameFromPath(objectFullpath, objectListFile, sizeof(objectFullpath), 1))   // Get directory prefix, with path separator.
        {
            goto bail3;
        }

        strncat(objectFullpath, buf, sizeof(objectFullpath) - strlen(objectFullpath) - 1); // Add name of file to open.

        // Read translation.
        get_buff(buf, MAXPATHLEN, fp, 1);
#ifdef ARDOUBLE_IS_FLOAT
        if (sscanf(buf, "%f %f %f", &translation[0], &translation[1], &translation[2]) != 3)
#else
        if (sscanf(buf, "%lf %lf %lf", &translation[0], &translation[1], &translation[2]) != 3)
#endif
        {
            goto bail3;
        }

        // Read rotation.
        get_buff(buf, MAXPATHLEN, fp, 1);
#ifdef ARDOUBLE_IS_FLOAT
        if (sscanf(buf, "%f %f %f %f", &rotation[0], &rotation[1], &rotation[2], &rotation[3]) != 4)
#else
        if (sscanf(buf, "%lf %lf %lf %lf", &rotation[0], &rotation[1], &rotation[2], &rotation[3]) != 4)
#endif
        {
            goto bail3;
        }

        // Read scale.
        get_buff(buf, MAXPATHLEN, fp, 1);
#ifdef ARDOUBLE_IS_FLOAT
        if (sscanf(buf, "%f %f %f", &scale[0], &scale[1], &scale[2]) != 3)
#else
        if (sscanf(buf, "%lf %lf %lf", &scale[0], &scale[1], &scale[2]) != 3)
#endif
        {
            goto bail3;
        }

        // Look for optional tokens. A blank line marks end of options.
        lightingFlag = 1; markerIndex = -1;

        while (get_buff(buf, MAXPATHLEN, fp, 0) && (buf[0] != '\0'))
        {
            if (strncmp(buf, "LIGHTING", 8) == 0)
            {
                if (sscanf(&(buf[8]), " %d", &lightingFlag) != 1)
                {
                    ARLOGe("Error in object file: LIGHTING token must be followed by an integer >= 0. Discarding.\n");
                }
            }
            else if (strncmp(buf, "MARKER", 6) == 0)
            {
                if (sscanf(&(buf[6]), " %d", &markerIndex) != 1)
                {
                    ARLOGe("Error in object file: MARKER token must be followed by an integer > 0. Discarding.\n");
                }
                else
                {
                    markerIndex--; // Marker numbers are zero-indexed, but in the config file they're 1-indexed.
                }
            }

            // Unknown tokens are ignored.
        }


        // Now attempt to load objects.
        ARLOGd("Reading object data file %s.\n", objectFullpath);
        objects[i].modelIndex = arOSGLoadModel2(VirtualEnvironment_AROSG, objectFullpath, translation, rotation, scale);
        if (objects[i].modelIndex < 0)
        {
            ARLOGe("Error attempting to read object data file %s.\n", objectFullpath);
            goto bail4;
        }

        // Set optional properties.
        arOSGSetModelLighting(VirtualEnvironment_AROSG, objects[i].modelIndex, lightingFlag);

        // If a valid marker index has been specified, save it.
        if (markerIndex >= 0 /*&& markerIndex < markersCount]*/)
        {
            arOSGSetModelVisibility(VirtualEnvironment_AROSG, objects[i].modelIndex, FALSE); // Objects tied to markers will not be initially visible.
            objects[i].markerIndex = markerIndex;
        }
        else
        {
            arOSGSetModelVisibility(VirtualEnvironment_AROSG, objects[i].modelIndex, TRUE); // All other objects will be initially visible.
            objects[i].markerIndex = -1;
        }

        objectCount++;
    }

    ARLOGd("Virtual Environment initialised.\n");
    fclose(fp);
    return (objectCount);

bail4:

    for (i--; i >= 0; i--)
    {
        arOSGUnloadModel(VirtualEnvironment_AROSG, i);
    }

bail3:
    free(objects);
    objects     = NULL;
    objectCount = 0;
bail2:
    fclose(fp);
bail1:
    if (VirtualEnvironment_AROSG)
    {
        arOSGFinal(VirtualEnvironment_AROSG);
        VirtualEnvironment_AROSG = NULL;
    }

#ifdef DEBUG
    ARLOGe("Virtual Environment initialisation failed.\n");
#endif
    return (0);
}