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;
}
}
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);
}
