/* rainbow_ramp: converts a double value X to a colour in RGB
* representation according to the following approx. scheme:
*
* Colour <--Black Blue Cyan Green Yellow Red White-->
* | | | | |
* X (relative) 0 ...1/4.....1/2.....3/4.....1
* X (absolute) Lowval.....................Upval
* Return value: a 32-bit integer that contains the RGB info
* in the SGI order: MSB:alpha, blue, green, red:LSB where
* the alpha byte is always FF (maximal transparency).
* If Upval==Lowval, then black is returned.
*/
static unsigned long rainbow_ramp(double X, double Lowval, double Upval)
{
const unsigned long PURE_WHITE=0xFFFFFFFFL,
PURE_BLACK=0xFF000000L,
GREEN_SHIFT=0x00000100L,
BLUE_SHIFT=0x00010000L;
unsigned long Col=PURE_BLACK;
if (Upval==Lowval) return(PURE_BLACK);
/* rescale: Lowval=0, Upval=1 */
X=(X-Lowval)/(Upval-Lowval);
if (X<0) return(PURE_BLACK); /* outside range */
if (X>1) return(PURE_WHITE);
/* find ranges, set colours */
if (X<=0.25) /* blue...cyan: full blue+green grows */
Col+=255*BLUE_SHIFT+(char)round_id(1020*X)*GREEN_SHIFT;
else if (X>0.25 && X<=0.5) /* cyan..green: full green+blue shrinks */
Col+=255*GREEN_SHIFT+(char)round_id(1020*(0.5-X))*BLUE_SHIFT;
else if (X>0.5 && X<=0.75) /* green..yellow: full green+red grows */
Col+=255*GREEN_SHIFT+(char)round_id(1020*(X-0.5));
else /* yellow..red: full red+green shrinks */
Col+=255+(char)round_id(1020*(1.0-X))*GREEN_SHIFT;
return(Col);
}
void Session::HandlePrepare(const Request ¬ification)
{
if(_prepare_waiting) {
_prepare_waiting = false;
}
QVariantHash msg = notification.GetData().toHash();
if(_current_round && !_current_round->Stopped() && _current_round->Started()) {
_prepare_waiting = true;
_prepare_notification = notification;
if(msg.value("interrupt").toBool()) {
_current_round->Stop("Round interrupted.");
}
return;
}
QByteArray brid = msg.value("round_id").toByteArray();
if(brid.isEmpty()) {
qDebug() << "HandlePrepare: Invalid round id";
return;
}
Id round_id(brid);
if(msg.contains("group")) {
QDataStream stream(msg.value("group").toByteArray());
Group group;
stream >> group;
qDebug() << "Prepare contains new group. I am present:" <<
group.Contains(GetPrivateIdentity().GetLocalId());
_group_holder->UpdateGroup(group);
}
/* init_matplot: initialises distmat plotting. The matrix size should
* be Row x Col (which is the min. size in pixels). Title is put on the top
* of the window by the window manager. Xorig and Yorig specify
* the lower left corner position of the window: if either of them
* is negative, then the window will be positioned interactively.
* Return value: the 'gid' window ID number.
*/
long init_matplot(unsigned int Row, unsigned int Col, char *Title,
long Xorig, long Yorig)
{
const unsigned int MINSIZE=500;
long Gid, Xsize, Ysize, Xmax, Ymax;
float Xmagnif, Ymagnif;
unsigned int Rs, Cs;
if (!Row) Row=MINSIZE;
if (!Col) Col=MINSIZE;
Xmagnif=(float)Col/MINSIZE;
Ymagnif=(float)Row/MINSIZE;
Rs=Row; Cs=Col;
if (Col<=Row)
{
if (Xmagnif<1.0)
{
Cs=MINSIZE;
Rs=round_id(Row/Xmagnif);
}
}
else
{
if (Ymagnif<1.0)
{
Rs=MINSIZE;
Cs=round_id(Col/Ymagnif);
}
}
foreground(); /* enable signal catch etc. */
Xmax=getgdesc(GD_XPMAX); Ymax=getgdesc(GD_YPMAX);
keepaspect(Col, Row);
/* Xmax,Ymax: the maximal screen coordinates */
Xmax=getgdesc(GD_XPMAX); Ymax=getgdesc(GD_YPMAX);
if (Xorig+Cs>Xmax) Xorig=Xmax-Cs;
if (Yorig+Rs>Ymax) Yorig=Ymax-Rs;
if (Xorig>=0 && Yorig>=0)
prefposition(Xorig, Xorig+Cs, Yorig, Yorig+Rs);
iconsize(84, 67);
Gid=winopen(Title); /* create window */
RGBmode();
/* check if double buffering is available */
if (Dblbuffer=getgdesc(GD_BITS_NORM_DBL_BLUE))
{ doublebuffer(); gconfig(); }
else fputs("init_matplot: single-buffer mode\n", stderr);
/* enable resize */
winconstraints();
keepaspect(Col, Row);
winconstraints();
getsize(&Xsize, &Ysize); /* scale drawing into window */
Xmagnif=(float)Xsize/Col;
Ymagnif=(float)Ysize/Row;
pushmatrix();
scale(Xmagnif, Ymagnif, 1.0);
cpack(RGB_BLACK); clear(); /* clears window to black */
if (Dblbuffer) { swapbuffers(); cpack(RGB_BLACK); clear(); }
/* queue input events */
qdevice(ESCKEY); qdevice(WINFREEZE); qdevice(WINTHAW);
qdevice(REDRAWICONIC); qdevice(WINQUIT);
return(Gid);
}
