extern void
disp_open( /* open the named display driver */
char *dname
)
{
char buf[sizeof(HDGRID)+512], fd0[8], fd1[8], *cmd[5], *sfn;
int i, n, len;
if (!strcmp(dname, SLAVENAME)) {
dpd.r = 0; /* read from stdin */
dpout = stdout; /* write to stdout */
dpd.running = 0; /* we're the slave procees */
} else {
/* get full display program name */
#ifdef DEVPATH
sprintf(buf, "%s/%s%s", DEVPATH, dname, HDSUF);
#else
sprintf(buf, "dev/%s%s", dname, HDSUF);
#endif
/* dup stdin and stdout */
if (readinp)
sprintf(fd0, "%d", dup(0));
else
strcpy(fd0, "-1");
sprintf(fd1, "%d", dup(1));
/* start the display process */
cmd[0] = buf;
cmd[1] = froot; cmd[2] = fd1; cmd[3] = fd0;
cmd[4] = NULL;
i = open_process(&dpd, cmd);
if (i <= 0)
error(USER, "cannot start display process");
if ((dpout = fdopen(dpd.w, "w")) == NULL)
error(SYSTEM, "problem opening display pipe");
/* close dup'ed stdin and stdout */
if (readinp)
close(atoi(fd0));
close(atoi(fd1));
}
dpd.w = -1; /* causes ignored error in close_process() */
inp_flags = 0;
/* check if outside */
if (vdef(OBSTRUCTIONS) && vbool(OBSTRUCTIONS))
disp_result(DS_OUTSECT, 0, NULL);
/* send eye separation if specified */
if (vdef(EYESEP)) {
sprintf(buf, "%.9e", vflt(EYESEP));
disp_result(DS_EYESEP, strlen(buf)+1, buf);
}
/* write out hologram grids & octrees */
for (i = 0; hdlist[i] != NULL; i++) {
memcpy(buf, (void *)hdlist[i], sizeof(HDGRID));
len = sizeof(HDGRID);
n = vdef(GEOMETRY);
sfn = i<n ? nvalue(GEOMETRY,i) :
n ? nvalue(GEOMETRY,n-1) : vval(OCTREE);
strcpy(buf+len, sfn);
len += strlen(sfn) + 1;
n = vdef(PORTS);
sfn = i<n ? nvalue(PORTS,i) : n ? nvalue(PORTS,n-1) : "";
strcpy(buf+len, sfn);
len += strlen(sfn) + 1;
disp_result(DS_ADDHOLO, len, buf);
}
disp_flush();
}
Graph* Graph::readGraph( QTextStream *s, QGraphicsItem *parent )
{
Graph *g = new Graph();
//This regexp matches the definition of a vertex
QRegExp vdef("\\s*"+uE+"\\s+\\[label=\"(.*)\",pos=\""+qE+"\\s+"+qE+"\"\\]");
//This regexp matches the definition of an edge
QRegExp edef("\\s*"+uE+"\\s*--\\s*"+uE+"\\s*\\[weight=\""+qE+"\"\\]" );
while( !s->atEnd() ) {
QString curline = s->readLine();
if( curline.contains(vdef) ) { //Does this line define a vertex?
//qDebug() << vdef.pattern() << " MATCHES " << curline;
bool ok = false; //pessimists are never dissapointed
uint id = vdef.cap(1).toUInt(&ok);
if(!ok) {
qDebug() << "error: couldn't do toUInt(" << vdef.cap(1);
continue;
} else ok = false;
QString label = vdef.cap(2);
qreal x = vdef.cap(3).toDouble(&ok);
if(!ok) {
qDebug() << "error: couldn't do toDouble(" << vdef.cap(3);
continue;
} else ok = false;
qreal y = vdef.cap(4).toDouble(&ok);
if(!ok) {
qDebug() << "error: couldn't do toDouble(" << vdef.cap(4);
continue;
}
qDebug() << "New Vertex with label \"" << label << "\", id"
<< id << ", and X,Y " << x << "," << y;
Vertex *v = new Vertex(g,id,label,QPointF(x,y),parent);
} else if( curline.contains(edef) ) { //Does this line define an edge?
//qDebug() << edef.pattern() << " MATCHES " << curline;
bool ok = false; //pessimists are never dissapointed
uint head_id = edef.cap(1).toUInt(&ok);
if(!ok) {
qDebug() << "error: couldn't do toUInt(" << edef.cap(1);
continue;
} else ok = false;
uint tail_id = edef.cap(2).toUInt(&ok);
if(!ok) {
qDebug() << "error: couldn't do toUInt(" << edef.cap(2);
continue;
} else ok = false;
qreal w = edef.cap(3).toDouble(&ok);
if(!ok) {
qDebug() << "error: couldn't do toDouble(" << edef.cap(3);
continue;
}
qDebug()<<"New edge (w="<<w<<") between "<<head_id<<" "<<tail_id;
if( !g->vertices().contains(head_id) ) {
qDebug() << "error: id " << head_id << " not found";
continue;
} else if( !g->vertices().contains(tail_id) ) {
qDebug() << "error: id " << tail_id << " not found";
continue;
}
Edge *e = new Edge(g, g->vertices().value(head_id),
g->vertices().value(tail_id), w );
}
}
return g;
}
