glm::mat4 Trackball::GetViewMatrix(bool debug) const {
if (!dragging)
return view;
// If start = end, the in-progress rotation we apply
// will be the additive identity (0 matrix), which will
// not jive well with the view.
if (dragStart[0] == dragStop[0] &&
dragStart[1] == dragStop[1]) {
return view;
}
float dot = glm::dot(dragStart, dragStop);
float angle = TRACKBALL_SENSITIVITY * glm::acos(dot);
glm::vec3 normal = glm::cross(dragStart, dragStop);
glm::mat4 rot = glm::rotate(view, angle, normal);
if (debug) {
printf("DragStart: "); PRINTV(dragStart);
printf("DragStop: "); PRINTV(dragStop);
printf("Dot: %f\n", dot);
printf("Angle: %f\n", angle);
printf("Normal: "); PRINTV(normal);
printf("Current Matrix:\n"); PRINTM(view);
printf("Dragged Matrix:\n"); PRINTM(rot);
}
return rot;
}
void sigint_handler(int sig)
{
int status;
printf("Cleaning up...\n");
close_conn(conn_hdls.fp_ptr, conn_hdls.conn_ptr);
if (conn_hdls.htsock_ptr != NULL)
{
status = close(*(conn_hdls.htsock_ptr));
PRINTV("Closing socket (returned code: %d)\n", status);
}
free_am();
exit(EXIT_FAILURE);
}
int main(int argc, char **argv)
{
s_options _opts;
opts = &_opts; /* Set global pointer */
memset(opts,'\0',sizeof(s_options));
opts->fcheck = 1; // Check files are available before setting up socket
int opt = getopt( argc, argv, "Cvc:p:i:" );
while( opt != -1 )
{
switch( opt ) {
case 'v':
opts->verbose = 1;
break;
case 'c':
opts->count = *optarg;
break;
case 'C':
/* Don't check if files exist before listening */
opts->fcheck = 0;
break;
case 'p':
opts->port = validate_port(optarg);
break;
case 'i':
opts->ifname = (char *)validate_if(optarg);
if (NULL == opts->ifname)
die("Copying interface name failed - %s\n",strerror(errno));
break;
default:
die(USAGE_MSG, argv[0]);
};
opt = getopt( argc, argv, "Cvc:p:i:" );
}
opts->files = argv + optind;
opts->files_num = argc - optind;
// Validate arguments
if (! opts->files[0] || strlen(*(opts->files))==0)
die("No files to send.\n" USAGE_MSG, argv[0]);
if (opts->files_num > 10)
die("Too many files to offer. Maximum is 10 files, got %d\n", opts->files_num);
int i;
size_t a = 0;
size_t file_args_length = 0;
for(i=0;i<opts->files_num;i++)
{
PRINTV("checking element %s\n",opts->files[i]);
a = strlen(opts->files[i]);
if ( a > FILENAME_MAXLEN)
die("File name number %d is too long.\n", i);
/* Check if file exists */
if ((opts->fcheck) && (! check_file(opts->files[i])) )
die(
"Failed accessing %s - %s\n",
opts->files[i],
strerror(errno)
);
file_args_length += a; // used later in http replies to calculate length
};
int htsock;
conn_hdls.htsock_ptr = &htsock;
if ((htsock = net_init()) == FAILURE)
die("Failed initializing network connection\n");
FILE *fp = NULL;
// fp_ptr = &fp;
conn_hdls.fp_ptr = &fp;
int conn;
// conn_ptr = &conn;
conn_hdls.conn_ptr = &conn;
/* Added to line breaks at the end of the reply, adjusted length accordingly */
size_t reply_err_len = 254 + 140 + 2*file_args_length + 27*(opts->files_num);
// unsigned int reply_err_len = 254 + 138 + 2*file_args_length + 27*(opts->files_num);
char reply_error[ reply_err_len ];
prep_reply_text(reply_error, reply_err_len);
if (signal(SIGINT,sigint_handler) == SIG_ERR)
die("Failed installing signal handler (%s)", strerror(errno));
while((conn = get_connection(htsock)))
{
if ((fp = fdopen(conn, "w+")) == NULL)
{
/* Failed open a stream for this connection, close
* connection and listen for another one
*/
close_conn(NULL,&conn);
continue;
}
if (FAILURE == handle_connection(fp, reply_error))
{
close_conn(&fp,&conn);
continue;
}
else
{
/* Success */
close_conn(&fp,&conn);
break;
}
} //while()
if (close(htsock))
fprintf(stderr, "Failed closing socket - %s", strerror(errno));
free_am(); /* Free general purpose allocated memory */
return(EXIT_SUCCESS);
} // main()