/* steal jobs from other workers */
jobinfo* steal() {
int i,w,b;
int len,tid,tag;
jobinfo *j;
w = random() % nw;
for (;;) {
if (wtid[w] != stid) {
pvm_initsend(0);
pvm_send(wtid[w],TAG_REQUEST);
for (;;) {
b = pvm_recv(-1,-1);
pvm_bufinfo(b,&len,&tag,&tid);
if (tag == TAG_JOB || tag == TAG_NO_JOB)
break;
else if (tag == TAG_REQUEST) {
pvm_initsend(0);
pvm_send(tid,TAG_NO_JOB);
}
else
p_handle(b);
}
if (tag == TAG_JOB)
break;
}
if (++w == nw)
w = 0;
}
j = malloc(sizeof(jobinfo));
upkjobinfo_active(j);
ha_lookup(ha,&j->s.da,&j->s.p);
return j;
}
/* add self to worker list */
void hello() {
int i,b,n;
pvmtaskinfo *ta;
pvm_tasks(0,&n,&ta);
for (i=0;i<n;i++)
if (!strcmp(ta[i].ti_a_out,"kalah")) {
pvm_initsend(0);
pvm_pkstr(host);
pvm_send(ta[i].ti_tid,TAG_HELLO);
break;
}
b = pvm_recv(-1,TAG_WORKERS);
if (b < 0)
die("Failed to receive worker list\n");
p_handle(b);
}
void
RectKnotHolderEntityXY::knot_set(Geom::Point const &p, Geom::Point const &origin, guint state)
{
SPRect *rect = SP_RECT(item);
// opposite corner (unmoved)
gdouble opposite_x = (rect->x.computed + rect->width.computed);
gdouble opposite_y = (rect->y.computed + rect->height.computed);
// original width/height when drag started
gdouble w_orig = opposite_x - origin[Geom::X];
gdouble h_orig = opposite_y - origin[Geom::Y];
Geom::Point s = p;
Geom::Point p_handle(rect->x.computed, rect->y.computed);
// mouse displacement since drag started
gdouble minx = p[Geom::X] - origin[Geom::X];
gdouble miny = p[Geom::Y] - origin[Geom::Y];
if (state & GDK_CONTROL_MASK) {
//original ratio
gdouble ratio = (w_orig / h_orig);
if (fabs(minx) > fabs(miny)) {
// snap to horizontal or diagonal
if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) {
// closer to the diagonal and in same-sign quarters, change both using ratio
s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-ratio, -1)), state);
minx = s[Geom::X] - origin[Geom::X];
miny = s[Geom::Y] - origin[Geom::Y];
rect->y.computed = MIN(origin[Geom::Y] + minx / ratio, opposite_y);
rect->height.computed = MAX(h_orig - minx / ratio, 0);
} else {
// closer to the horizontal, change only width, height is h_orig
s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-1, 0)), state);
minx = s[Geom::X] - origin[Geom::X];
miny = s[Geom::Y] - origin[Geom::Y];
rect->y.computed = MIN(origin[Geom::Y], opposite_y);
rect->height.computed = MAX(h_orig, 0);
}
rect->x.computed = MIN(s[Geom::X], opposite_x);
rect->width.computed = MAX(w_orig - minx, 0);
} else {
// snap to vertical or diagonal
if (miny != 0 && fabs(minx/miny) > 0.5 *ratio && (SGN(minx) == SGN(miny))) {
// closer to the diagonal and in same-sign quarters, change both using ratio
s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-ratio, -1)), state);
minx = s[Geom::X] - origin[Geom::X];
miny = s[Geom::Y] - origin[Geom::Y];
rect->x.computed = MIN(origin[Geom::X] + miny * ratio, opposite_x);
rect->width.computed = MAX(w_orig - miny * ratio, 0);
} else {
// closer to the vertical, change only height, width is w_orig
s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(0, -1)), state);
minx = s[Geom::X] - origin[Geom::X];
miny = s[Geom::Y] - origin[Geom::Y];
rect->x.computed = MIN(origin[Geom::X], opposite_x);
rect->width.computed = MAX(w_orig, 0);
}
rect->y.computed = MIN(s[Geom::Y], opposite_y);
rect->height.computed = MAX(h_orig - miny, 0);
}
rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
} else {
// move freely
s = snap_knot_position(p, state);
minx = s[Geom::X] - origin[Geom::X];
miny = s[Geom::Y] - origin[Geom::Y];
rect->x.computed = MIN(s[Geom::X], opposite_x);
rect->width.computed = MAX(w_orig - minx, 0);
rect->y.computed = MIN(s[Geom::Y], opposite_y);
rect->height.computed = MAX(h_orig - miny, 0);
rect->width._set = rect->height._set = rect->x._set = rect->y._set = true;
}
sp_rect_clamp_radii(rect);
update_knot();
(static_cast<SPObject *>(rect))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
