void gen_body(PARAMS *p,SSDATA *d,int iOrgIdx)
{
double phi,theta,v;
int k;
d->mass = p->m;
d->radius = p->R;
for (k=0;k<N_DIM;k++) {
do {
SET_VEC(d->pos,(2*RAN - 1)*p->Rd,(2*RAN - 1)*p->Rd,(2*RAN - 1)*p->Rd);
} while (MAG(d->pos) + p->R > p->Rd);
/* use following for more centrally condensed distribution...
r = RAN*(p->Rd - p->R);
phi = TWO_PI*RAN;
theta = PI*RAN;
SET_VEC(d->pos,sin(theta)*cos(phi),sin(theta)*sin(phi),cos(theta));
SCALE_VEC(d->pos,r);
*/
v = RAN; /* will be rescaled later */
phi = TWO_PI*RAN;
theta = PI*RAN;
SET_VEC(d->vel,sin(theta)*cos(phi),sin(theta)*sin(phi),cos(theta));
SCALE_VEC(d->vel,v); /* isotropic initially */
}
ZERO_VEC(d->spin);
d->color = PLANETESIMAL;
d->org_idx = iOrgIdx;
}
int
main(int argc,char *argv[])
{
/* rotates input vector by specified angle around given rotation axis */
VECTOR r,n,nxr,rp;
double phi,cphi,sphi,ndotr;
if (argc != 8) {
(void) fprintf(stderr,"Usage: %s x y z phi rx ry rz\n",argv[0]);
return 1;
}
SET_VEC(r,atof(argv[1]),atof(argv[2]),atof(argv[3]));
assert(MAG(r) > 0.0);
phi = atof(argv[4]);
SET_VEC(n,atof(argv[5]),atof(argv[6]),atof(argv[7]));
assert(MAG(n) > 0.0);
ndotr = DOT(n,r);
CROSS(n,r,nxr);
cphi = cos(phi);
sphi = sin(phi);
SCALE_VEC(r,cphi);
SCALE_VEC(n,ndotr*(1.0-cphi));
SCALE_VEC(nxr,sphi);
ADD_VEC(r,n,rp);
ADD_VEC(rp,nxr,rp);
(void) printf("%g %g %g\n",rp[X],rp[Y],rp[Z]);
return 0;
}
//! handle light update message
rfbBool VncServer::handleLightsMessage(rfbClientPtr cl, void *data,
const rfbClientToServerMsg *message) {
if (message->type != rfbLights)
return FALSE;
lightsMsg msg;
int n = rfbReadExact(cl, ((char *)&msg)+1, sizeof(msg)-1);
if (n <= 0) {
if (n!= 0)
rfbLogPerror("handleLightsMessage: read");
rfbCloseClient(cl);
return TRUE;
}
if (!cl->clientData) {
cl->clientData = new ClientData();
}
ClientData *cd = static_cast<ClientData *>(cl->clientData);
cd->supportsLights = true;
#define SET_VEC(d, dst, src) \
do { \
for (int k=0; k<d; ++k) { \
(dst)[k] = (src)[k]; \
} \
} while(false)
std::vector<Light> newLights;
for (int i=0; i<lightsMsg::NumLights; ++i) {
const auto &cl = msg.lights[i];
newLights.emplace_back();
auto &l = newLights.back();
SET_VEC(4, l.position, cl.position);
SET_VEC(4, l.ambient, cl.ambient);
SET_VEC(4, l.diffuse, cl.diffuse);
SET_VEC(4, l.specular, cl.specular);
SET_VEC(3, l.attenuation, cl.attenuation);
SET_VEC(3, l.direction, cl.spot_direction);
l.spotCutoff = cl.spot_cutoff;
l.spotExponent = cl.spot_exponent;
l.enabled = cl.enabled;
//std::cerr << "Light " << i << ": ambient: " << l.ambient << std::endl;
//std::cerr << "Light " << i << ": diffuse: " << l.diffuse << std::endl;
}
std::swap(plugin->lights, newLights);
if (plugin->lights != newLights) {
++plugin->lightsUpdateCount;
std::cerr << "handleLightsMessage: lights changed" << std::endl;
}
//std::cerr << "handleLightsMessage: " << plugin->lights.size() << " lights received" << std::endl;
return TRUE;
}
static int
process(char *filename,RUBBLE_PILE *rp,BOOLEAN sim_units,double *time)
{
enum {next,mass,radius,density,pos,vel,orient,spin,color,agg_id,par_id};
SSIO ssio;
SSHEAD h;
int i,choice;
assert(rp != NULL);
*time = 0.0;
if (ssioOpen(filename,&ssio,SSIO_READ)) {
(void) fprintf(stderr,"Unable to open \"%s\"\n",filename);
return 1;
}
if (ssioHead(&ssio,&h) || h.n_data < 0) {
(void) fprintf(stderr,"Corrupt header\n");
(void) ssioClose(&ssio);
return 1;
}
if (h.n_data == 0) {
(void) fprintf(stderr,"No data found!");
(void) ssioClose(&ssio);
return 1;
}
switch(h.iMagicNumber) {
case SSIO_MAGIC_STANDARD:
break;
case SSIO_MAGIC_REDUCED:
(void) fprintf(stderr,"Reduced ss format not supported.\n");
ssioClose(&ssio);
return 1;
default:
(void) fprintf(stderr,"Unrecognized ss file magic number (%i).\n",h.iMagicNumber);
ssioClose(&ssio);
return 1;
}
rp->n_particles = h.n_data;
*time = h.time;
(void) printf("Number of particles = %i (time %g)\n",rp->n_particles,*time);
rpuMalloc(rp);
for (i=0;i<rp->n_particles;i++)
if (ssioData(&ssio,&rp->data[i])) {
(void) fprintf(stderr,"Corrupt data\n");
(void) ssioClose(&ssio);
return 1;
}
(void) ssioClose(&ssio);
while (/*CONSTCOND*/1) {
rpuAnalyze(rp);
(void) printf("%i. Total mass = ",mass);
if (sim_units) (void) printf("%g M_sun",rp->mass);
else (void) printf("%g kg",rp->mass*M_SCALE);
(void) printf("\n");
(void) printf("%i. Bulk radius = ",radius);
if (sim_units) (void) printf("%g AU",rp->radius);
else (void) printf("%g km",rp->radius*0.001*L_SCALE);
(void) printf("\n");
(void) printf(" [Bulk semi-axes: ");
if (sim_units) (void) printf("%g %g %g AU",
rp->axis_len[rp->axis_ord[X]],
rp->axis_len[rp->axis_ord[Y]],
rp->axis_len[rp->axis_ord[Z]]);
else (void) printf("%g %g %g km",
rp->axis_len[rp->axis_ord[X]]*0.001*L_SCALE,
rp->axis_len[rp->axis_ord[Y]]*0.001*L_SCALE,
rp->axis_len[rp->axis_ord[Z]]*0.001*L_SCALE);
(void) printf("]\n");
(void) printf("%i. Bulk density = ",density);
if (sim_units) (void) printf("%g M_sun/AU^3",rp->density);
else (void) printf("%g g/cc",rp->density*0.001*D_SCALE);
(void) printf("\n");
(void) printf("%i. Centre-of-mass position = ",pos);
if (sim_units) (void) printf("%g %g %g AU",rp->pos[X],rp->pos[Y],
rp->pos[Z]);
else (void) printf("%.2f %.2f %.2f km",rp->pos[X]*0.001*L_SCALE,
rp->pos[Y]*0.001*L_SCALE,rp->pos[Z]*0.001*L_SCALE);
(void) printf("\n");
(void) printf("%i. Centre-of-mass velocity = ",vel);
if (sim_units) (void) printf("%g %g %g x 30 km/s",rp->vel[X],rp->vel[Y],
rp->vel[Z]);
else (void) printf("%.2f %.2f %.2f m/s",rp->vel[X]*V_SCALE,
rp->vel[Y]*V_SCALE,rp->vel[Z]*V_SCALE);
(void) printf("\n");
(void) printf("%i. Orientation: a1 = %6.3f %6.3f %6.3f\n",orient,
rp->axes[rp->axis_ord[X]][X],
rp->axes[rp->axis_ord[X]][Y],
rp->axes[rp->axis_ord[X]][Z]);
(void) printf(" a2 = %6.3f %6.3f %6.3f\n",
rp->axes[rp->axis_ord[Y]][X],
rp->axes[rp->axis_ord[Y]][Y],
rp->axes[rp->axis_ord[Y]][Z]);
(void) printf(" a3 = %6.3f %6.3f %6.3f\n",
rp->axes[rp->axis_ord[Z]][X],
rp->axes[rp->axis_ord[Z]][Y],
rp->axes[rp->axis_ord[Z]][Z]);
(void) printf("%i. Spin = ",spin);
if (sim_units) (void) printf("%g %g %g x 2pi rad/yr",
rp->spin[X],rp->spin[Y],rp->spin[Z]);
else {
double scale = 3600/(TWO_PI*T_SCALE),w;
(void) printf("%.2f %.2f %.2f 1/h (",rp->spin[X]*scale,
rp->spin[Y]*scale,rp->spin[Z]*scale);
w = MAG(rp->spin);
if (w) (void) printf("period %g h",1/(w*scale));
else (void) printf("no spin");
(void) printf(")");
}
(void) printf("\n");
(void) printf(" [Ang mom = ");
if (sim_units) (void) printf("%g %g %g (sys units)",rp->ang_mom[X],
rp->ang_mom[Y],rp->ang_mom[Z]);
else {
double scale = M_SCALE*SQ(L_SCALE)/T_SCALE;
(void) printf("%.5e %.5e %.5e N m/s",rp->ang_mom[X]*scale,
rp->ang_mom[Y]*scale,rp->ang_mom[Z]*scale);
}
(void) printf("]\n");
(void) printf(" [Effective spin = ");
if (sim_units) (void) printf("%g x 2pi rad/yr",rp->eff_spin);
else {
double scale = 3600/(TWO_PI*T_SCALE);
(void) printf("%.2f 1/h (",rp->eff_spin*scale);
if (rp->eff_spin) printf("period %g h",1/(rp->eff_spin*scale));
else (void) printf("no spin");
(void) printf(")");
}
(void) printf("]\n");
(void) printf(" [Rotation index = %.2f (",rp->rot_idx);
if (rp->eff_spin == 0.0) (void) printf("undefined");
else if (rp->rot_idx == 1.0) (void) printf("unif rot about max moment");
else if (rp->rot_idx < 1.0 && rp->rot_idx > 0.0) (void) printf("SAM");
else if (rp->rot_idx == 0.0) (void) printf("unif rot about mid moment");
else if (rp->rot_idx < 0.0 && rp->rot_idx > -1.0) (void) printf("LAM");
else if (rp->rot_idx == -1.0) (void) printf("unif rot about min moment");
else assert(0);
(void) printf(")]\n");
(void) printf("%i. Color = %i (%s)\n",color,(int) rp->color,
color_str(rp->color));
(void) printf("%i. Aggregate ID = ",agg_id);
if (rp->agg_id < 0)
(void) printf("N/A");
else
(void) printf("%i",(int) rp->agg_id);
(void) printf("\n");
(void) printf("%i. Particle ID\n",par_id);
do {
(void) printf("Enter number to change (or 0 to continue): ");
(void) scanf("%i",&choice);
(void) getchar();
} while (choice < next || choice > par_id);
if (choice == next) return 0;
switch(choice) {
case mass:
{
double f;
BOOLEAN const_den = get_yn("Keep bulk density constant","n"),proceed=TRUE;
do {
(void) printf("Enter mass scaling factor (-ve ==> abs val): ");
(void) scanf("%lf",&f);
if (f == 0.0) {
getchar();
proceed = get_yn("WARNING: This will set all particle masses to zero...continue","n");
}
} while (!proceed);
if (f < 0) {
if (!sim_units) f /= M_SCALE;
f = -f/rp->mass;
}
rpuScaleMass(rp,f);
if (const_den) rpuScaleRadius(rp,pow(f,1.0/3),FALSE);
break;
}
case radius:
{
double f;
BOOLEAN just_particles = get_yn("Just scale particles","n"),const_den = FALSE;
if (!just_particles)
const_den = get_yn("Keep bulk density constant","n");
do {
(void) printf("Enter radius scaling factor "
"(-ve ==> abs val): ");
(void) scanf("%lf",&f);
} while (f == 0);
getchar();
if (f < 0) {
if (!sim_units) f *= 1000/L_SCALE;
if (!just_particles)
f = -f/rp->radius;
}
rpuScaleRadius(rp,f,just_particles);
if (just_particles)
rpuCalcRadius(rp); /* because outer edge may have changed */
if (const_den) rpuScaleMass(rp,CUBE(f));
break;
}
case density:
{
double f;
BOOLEAN const_radius = get_yn("Keep radius constant","y");
do {
(void) printf("Enter density scaling factor (-ve ==> abs val): ");
(void) scanf("%lf",&f);
} while (f == 0);
getchar();
if (f < 0) {
if (!sim_units) f *= 1000/D_SCALE;
f = -f/rp->density;
}
if (const_radius) rpuScaleMass(rp,f);
else rpuScaleRadius(rp,pow(f,-1.0/3),FALSE);
break;
}
case pos:
{
BOOLEAN absolute = get_yn("Specify absolute position","y");
if (absolute) {
SCALE_VEC(rp->pos,-1.0);
rpuApplyPos(rp); /* reset COM to (0,0,0) first */
(void) printf("Enter new position [x y z in ");
}
else
(void) printf("Enter position offset [x y z in ");
if (sim_units) (void) printf("AU");
else (void) printf("km");
(void) printf("]: ");
(void) scanf("%lf%lf%lf",&rp->pos[X],&rp->pos[Y],&rp->pos[Z]);
(void) getchar();
if (!sim_units) NORM_VEC(rp->pos,0.001*L_SCALE);
rpuApplyPos(rp);
break;
}
case vel:
{
BOOLEAN absolute = get_yn("Specify absolute velocity","y");
if (absolute) {
SCALE_VEC(rp->vel,-1.0);
rpuApplyVel(rp);
(void) printf("Enter new velocity [vx vy vz in ");
}
else
(void) printf("Enter velocity offset [vx vy vz in ");
if (sim_units) (void) printf("units of 30 km/s");
else (void) printf("m/s");
(void) printf("]: ");
(void) scanf("%lf%lf%lf",&rp->vel[X],&rp->vel[Y],&rp->vel[Z]);
(void) getchar();
if (!sim_units) NORM_VEC(rp->vel,V_SCALE);
rpuApplyVel(rp);
break;
}
case orient:
{
enum {x=1,y,z};
MATRIX rot;
double angle;
BOOLEAN align,body,rndm;
int choice;
align = get_yn("Align body axes with coordinate axes","n");
if (align) {
MATRIX m;
COPY_VEC(rp->axes[MAJOR(rp)],m[X]);
COPY_VEC(rp->axes[INTER(rp)],m[Y]);
COPY_VEC(rp->axes[MINOR(rp)],m[Z]);
rpuRotate(rp,m,FALSE);
break;
}
body = get_yn("Use body axes","n");
(void) printf("%i. Rotate about %s axis\n",x,body?"major":"x");
(void) printf("%i. Rotate about %s axis\n",y,body?"intermediate":"y");
(void) printf("%i. Rotate about %s axis\n",z,body?"minor":"z");
do {
(void) printf("Enter choice: ");
(void) scanf("%i",&choice);
} while (choice < x || choice > z);
--choice; /* to conform with X,Y,Z macros */
(void) getchar();
rndm = get_yn("Use random angle","n");
if (rndm) angle = TWO_PI*rand()/RAND_MAX;
else {
(void) printf("Enter rotation angle in ");
if (sim_units) (void) printf("radians");
else (void) printf("degrees");
(void) printf(" (-ve=clockwise): ");
(void) scanf("%lf",&angle);
(void) getchar();
if (!sim_units) angle *= DEG_TO_RAD;
}
UNIT_MAT(rot);
if (body) choice = rp->axis_ord[choice];
switch (choice) {
case X:
rot[Y][Y] = cos(angle); rot[Y][Z] = -sin(angle);
rot[Z][Y] = -rot[Y][Z]; rot[Z][Z] = rot[Y][Y];
break;
case Y:
rot[X][X] = cos(angle); rot[X][Z] = sin(angle);
rot[Z][X] = -rot[X][Z]; rot[Z][Z] = rot[X][X];
break;
case Z:
rot[X][X] = cos(angle); rot[X][Y] = -sin(angle);
rot[Y][X] = -rot[X][Y]; rot[Y][Y] = rot[X][X];
break;
default:
assert(0);
}
rpuRotate(rp,rot,body);
break;
}
case spin:
{
VECTOR old_spin,d;
double w_max = 2*PI/sqrt(3*PI/rp->density);
BOOLEAN incr_only,ang_mom,body;
COPY_VEC(rp->spin,old_spin); /* needed for spin increment */
/*DEBUG following only removes net spin---it does not
ensure that every particle has wxr_i = 0 and w_i = 0*/
SCALE_VEC(rp->spin,-1.0);
rpuAddSpin(rp,FALSE); /* remove current spin */
(void) printf("Classical breakup limit for measured density = ");
if (sim_units) (void) printf("%g x 2pi rad/yr",w_max);
else (void) printf("%g 1/h (P_min = %g h)",
3600*w_max/(TWO_PI*T_SCALE),
TWO_PI*T_SCALE/(3600*w_max));
(void) printf("\n");
incr_only = get_yn("Specify increment only, instead of absolute value","n");
if (incr_only)
ang_mom = get_yn("Specify angular momentum increment","n");
else
ang_mom = get_yn("Specify angular momentum","n");
if (ang_mom) {
if (incr_only)
(void) printf("Enter angular momentum increment [dlx dly dlz in ");
else
(void) printf("Enter new angular momentum [lx ly lz in ");
if (sim_units) (void) printf("sys units");
else (void) printf("N m/s");
(void) printf("]: ");
(void) scanf("%lf%lf%lf",&d[X],&d[Y],&d[Z]);
(void) getchar();
if (!sim_units)
SCALE_VEC(d,T_SCALE/(SQ(L_SCALE)*M_SCALE));
if (incr_only) {
ADD_VEC(rp->ang_mom,d,rp->ang_mom);
}
else {
COPY_VEC(d,rp->ang_mom);
}
rpuAddAngMom(rp);
if (MAG(rp->spin) > w_max)
(void) printf("WARNING: exceeds classical breakup limit\n");
break;
}
body = get_yn("Use body axes","n");
if (incr_only)
(void) printf("Enter spin increment [dwx dwy dwz in ");
else
(void) printf("Enter new spin [wx wy wz in ");
if (sim_units) (void) printf("units of 2pi rad/yr");
else (void) printf("1/h");
(void) printf("]: ");
(void) scanf("%lf%lf%lf",&d[X],&d[Y],&d[Z]);
(void) getchar();
if (!sim_units) SCALE_VEC(d,TWO_PI*T_SCALE/3600);
if (incr_only) {
ADD_VEC(old_spin,d,rp->spin);
}
else {
COPY_VEC(d,rp->spin);
}
if (MAG(rp->spin) > w_max)
(void) printf("WARNING: exceeds classical breakup limit\n");
rpuAddSpin(rp,body);
break;
}
case color:
{
BOOLEAN invalid_color;
int c;
(void) printf("Color scheme:\n");
for (i=BLACK;i<FIRST_GRAY;i++)
(void) printf("%2i. %s\n",i,color_str(i));
do {
invalid_color = FALSE;
(void) printf("Enter new color: ");
(void) scanf("%i",&c);
(void) getchar();
if (c >= NUM_COLORS) { /* allow negative colors */
(void) printf("Invalid color\n");
invalid_color = TRUE;
continue;
}
if (c == BLACK || c == FIRST_GRAY)
(void) printf("WARNING: Particles may be invisible!\n");
} while (invalid_color);
rp->color = c;
rpuApplyColor(rp);
break;
}
case agg_id:
{
do {
(void) printf("Enter new aggregate ID (or -1 to reset): ");
(void) scanf("%i",&rp->agg_id);
(void) getchar();
if (rp->agg_id < -1)
(void) printf("Invalid ID\n");
else
rpuApplyAggID(rp);
} while(rp->agg_id < -1);
break;
}
case par_id:
{
SSDATA *p,*pmax;
VECTOR r;
double lng,lat,dmax,d;
int c;
(void) printf("Enter angular coordinates [lng lat in deg]: ");
(void) scanf("%lf%lf",&lng,&lat);
(void) getchar();
lng *= DEG_TO_RAD;
lat *= DEG_TO_RAD;
SET_VEC(r,cos(lng)*cos(lat),sin(lng)*cos(lat),sin(lat));
dmax = 0.0;
pmax = NULL;
for (i=0;i<rp->n_particles;i++) {
p = &rp->data[i];
/* projected distance along vector minus distance perpendicular
to vector favors particles closest to vector */
d = DOT(p->pos,r) - sqrt(MAG_SQ(p->pos) - SQ(DOT(p->pos,r)));
if (d > dmax) {
dmax = d;
pmax = p;
}
}
if (!pmax) {
(void) printf("No particle found.\n");
continue;
}
(void) printf("Found particle (original index %i, color %i [%s])\n",
pmax->org_idx,pmax->color,color_str(pmax->color));
while (/*CONSTCOND*/1) {
(void) printf("Enter new color: ");
(void) scanf("%i",&c);
(void) getchar();
if (c >= NUM_COLORS) { /* allow negative colors */
(void) printf("Invalid color\n");
goto invalid;
}
if (c == BLACK || c == RED || c == YELLOW || c == MAGENTA ||
c == CYAN || c == KHAKI || c == FIRST_GRAY) {
(void) printf("Color %i is reserved\n",c);
goto invalid;
}
break;
invalid:
(void) printf("Color scheme:\n");
for (i=BLACK;i<FIRST_GRAY;i++)
(void) printf("%2i. %s\n",i,color_str(i));
}; /* while */
pmax->color = c;
break;
}
default:
assert(0);
}
}
}
static void
process(SSDATA *d,int n,double *t)
{
PROPERTIES p;
int choice;
enum {Next,Time,Mass,Bounds,ComPos,ComVel,AngMom,VelDsp,Color,Units,
Offsets,Masses,Radii,End};
while (/*CONSTCOND*/1) {
ss_analyze(d,n,&p);
(void) printf("%2i. Time = %g\n",Time,*t);
(void) printf("%2i. Total mass = %g\n",Mass,p.total_mass);
(void) printf("%2i. Bounds: x=[%g,%g]\n"
" y=[%g,%g]\n"
" z=[%g,%g]\n",Bounds,
p.bnd_min[X],p.bnd_max[X],
p.bnd_min[Y],p.bnd_max[Y],
p.bnd_min[Z],p.bnd_max[Z]);
(void) printf("%2i. Centre-of-mass position = %g %g %g\n",ComPos,
p.com_pos[X],p.com_pos[Y],p.com_pos[Z]);
(void) printf("%2i. Centre-of-mass velocity = %g %g %g\n",ComVel,
p.com_vel[X],p.com_vel[Y],p.com_vel[Z]);
(void) printf("%2i. Specific angular momentum = %g %g %g\n",AngMom,
p.ang_mom[X],p.ang_mom[Y],p.ang_mom[Z]);
(void) printf("%2i. Velocity dispersion = %g %g %g\n",VelDsp,
p.vel_dsp[X],p.vel_dsp[Y],p.vel_dsp[Z]);
(void) printf("%2i. Dominant color = %i (%s)\n",Color,p.color,
color_str(p.color));
(void) printf("%2i. Units\n",Units);
(void) printf("%2i. Offsets\n",Offsets);
(void) printf("%2i. Particle masses\n",Masses);
(void) printf("%2i. Particle radii\n",Radii);
do {
(void) printf("Enter number to change (or 0 to continue): ");
(void) scanf("%i",&choice);
} while (choice < Next || choice >= End);
(void) getchar();
if (choice == Next) return;
switch(choice) {
case Time:
do {
(void) printf("Enter new time: ");
(void) scanf("%lf",t);
(void) getchar();
} while (*t < 0);
break;
case Mass:
{
double f;
do get_scaling(&f,NegativeOK);
while (f == 0);
if (f < 0) f = -f/p.total_mass;
scale_mass(d,n,f);
break;
}
case Bounds:
{
double f,min,max;
int i,choice;
do {
do {
(void) printf("%i. Change x bounds (now [%g,%g])\n",X + 1,
p.bnd_min[X],p.bnd_max[X]);
(void) printf("%i. Change y bounds (now [%g,%g])\n",Y + 1,
p.bnd_min[Y],p.bnd_max[Y]);
(void) printf("%i. Change z bounds (now [%g,%g])\n",Z + 1,
p.bnd_min[Z],p.bnd_max[Z]);
(void) printf("Your choice (or 0 when done): ");
(void) scanf("%i",&choice);
(void) getchar();
} while (choice < 0 || choice > N_DIM);
if (choice == 0) break;
--choice; /* put back in range [X,Z] */
if (p.bnd_min[choice] == p.bnd_max[choice]) {
(void) printf("Chosen dimension is degenerate\n");
continue;
}
do {
(void) printf("Enter new bounds (min max): ");
(void) scanf("%lf%lf",&min,&max);
(void) getchar();
} while (min > max);
if (min == max &&
get_yn("Zero velocities for this component","y"))
for (i=0;i<n;i++)
d[i].vel[choice] = 0;
f = (max - min)/(p.bnd_max[choice] - p.bnd_min[choice]);
for (i=0;i<n;i++)
d[i].pos[choice] =
(d[i].pos[choice] - p.bnd_min[choice])*f + min;
p.bnd_min[choice] = min;
p.bnd_max[choice] = max;
} while (/*CONSTCOND*/1);
break;
}
case ComPos:
{
VECTOR v;
if (MAG(p.com_pos) && get_yn("Scale the magnitude","y")) {
double f;
get_scaling(&f,NegativeOK);
COPY_VEC(p.com_pos,v);
if (f < 0) f = -f/MAG(v);
SCALE_VEC(v,f);
}
else get_components(v);
adj_com_pos(d,n,&p,v);
break;
}
case ComVel:
{
VECTOR v;
if (MAG(p.com_vel) && get_yn("Scale the magnitude","y")) {
double f;
get_scaling(&f,NegativeOK);
COPY_VEC(p.com_vel,v);
if (f < 0) f = -f/MAG(v);
SCALE_VEC(v,f);
}
else get_components(v);
adj_com_vel(d,n,&p,v);
break;
}
case AngMom:
{
VECTOR v;
(void) printf("NOTE: specific angular momentum is measured with\n"
"respect to fixed space frame centred at (0,0,0)\n"
"and does not take particle spins into account\n");
if (MAG(p.ang_mom) && get_yn("Scale the magnitude","y")) {
double f;
get_scaling(&f,NegativeOK);
COPY_VEC(p.ang_mom,v);
if (f < 0) f = -f/MAG(p.ang_mom);
SCALE_VEC(v,f);
}
else if (get_yn("Scale the components","y")) {
VECTOR u;
int k;
get_component_scaling(u);
for (k=0;k<N_DIM;k++)
v[k] = u[k]*p.ang_mom[k];
}
else get_components(v);
adj_ang_mom(d,n,&p,v);
break;
}
case VelDsp:
{
VECTOR v;
(void) printf("NOTE: velocity dispersion is context dependent,\n"
"for now relative ONLY to center-of-mass velocity,\n"
"i.e. without considering bulk rotation or shear\n");
if (!MAG(p.vel_dsp)) {
(void) printf("Zero velocity dispersion -- cannot adjust\n");
break;
}
if (get_yn("Scale the magnitude","y")) {
double f;
get_scaling(&f,NegativeOK);
if (f < 0) f = -f/MAG(p.vel_dsp);
SET_VEC(v,f,f,f);
}
else get_component_scaling(v);
scale_vel_dsp(d,n,&p,v);
break;
}
case Color:
{
int c;
(void) printf("Color scheme:\n");
for (c=BLACK;c<FIRST_GRAY;c++)
(void) printf("%2i. %s\n",c,color_str(c));
(void) printf("[values from %i to %i are levels of gray]\n",
FIRST_GRAY,LAST_GRAY);
do {
(void) printf("Enter new color: ");
(void) scanf("%i",&c);
(void) getchar();
} while (c < 0 || c >= NUM_COLORS);
change_color(d,n,c);
break;
}
case Units:
{
enum {N,M,L,T,V,E};
double f;
int i,choice;
(void) printf("NOTE: It is up to you to ensure dimensions are\n"
"internally consistent. pkdgrav assumes G == 1.\n");
do {
do {
(void) printf("%i. Mass (particle masses)\n",M);
(void) printf("%i. Length (particle radii, pos'ns)\n",L);
(void) printf("%i. Time (time,particle spins)\n",T);
(void) printf("%i. Velocity (particle velocities)\n",V);
(void) printf("Select dimension to scale "
"(or 0 when done): ");
(void) scanf("%i",&choice);
(void) getchar();
} while (choice < N || choice >= E);
if (choice == N) break;
switch (choice) {
case M:
(void) printf("M_Sun = 1.9891e30 kg\n"
"M_Earth = 5.9742e24 kg\n"
"M_Jupiter = 1.8992e27 kg\n"
"M_Saturn = 5.6864e26 kg\n");
get_scaling(&f,PositiveOnly);
for (i=0;i<n;i++)
d[i].mass *= f;
break;
case L:
(void) printf("1 AU = 1.49597892e11 m\n"
"R_Earth = 6.37814e6 m\n");
get_scaling(&f,PositiveOnly);
for (i=0;i<n;i++) {
d[i].radius *= f;
SCALE_VEC(d[i].pos,f);
}
break;
case T:
(void) printf("1 yr = 3.15576e7 s\n"
"1 yr / 2 pi = 5.02255e6 s\n");
get_scaling(&f,PositiveOnly);
*t *= f;
for (i=0;i<n;i++)
NORM_VEC(d[i].spin,f);
break;
case V:
(void) printf("V_Earth = 2.97852586e4 m/s\n");
get_scaling(&f,PositiveOnly);
for (i=0;i<n;i++)
SCALE_VEC(d[i].vel,f);
break;
default:
assert(0);
}
} while (/*CONSTCOND*/1);
break;
}
case Offsets:
{
VECTOR v;
int i;
(void) printf("POSITION OFFSET (0 0 0 for none)...\n");
get_components(v);
for (i=0;i<n;i++)
ADD_VEC(d[i].pos,v,d[i].pos);
(void) printf("VELOCITY OFFSET (0 0 0 for none)...\n");
get_components(v);
for (i=0;i<n;i++)
ADD_VEC(d[i].vel,v,d[i].vel);
break;
}
case Masses:
{
double f;
do get_scaling(&f,NegativeOK);
while (f == 0);
scale_masses(d,n,f);
break;
}
case Radii:
{
double f;
do get_scaling(&f,NegativeOK);
while (f == 0);
scale_radii(d,n,f);
break;
}
default:
assert(0);
}
}
}
