From 4bbee7652732567abfbc7d5e1160516b6ac68e2a Mon Sep 17 00:00:00 2001
From: slevy <slevy>
Date: Thu, 25 Jan 2001 00:27:21 +0000
Subject: [PATCH] "depthsort" adds depth-sorted polygons. New texture
qualifiers -i(ntensity) -a(lpha) -A(dd). New "gall" (a.k.a. "allobj") cmd
sends following command to all objects. "everycomp" says whether to
compensate for "every" subsampling.
---
src/partibrains.c | 295 ++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 269 insertions(+), 26 deletions(-)
diff --git a/src/partibrains.c b/src/partibrains.c
index c9c900f..88dcb8a 100644
--- a/src/partibrains.c
+++ b/src/partibrains.c
@@ -18,8 +18,11 @@
# include <unistd.h>
# include <sys/types.h>
# include <netinet/in.h> /* for htonl */
+# include <time.h>
# include <alloca.h>
-# include "config.h" /* for WORDS_BIGENDIAN */
+# ifndef WORDS_BIGENDIAN
+# include "config.h" /* for WORDS_BIGENDIAN */
+# endif
#else /*WIN32*/
# include "winjunk.h"
# define WORDS_BIGENDIAN 0
@@ -221,6 +224,7 @@ specks_init( int argc, char *argv[] )
st->textsize = .05;
st->npolygon = 11;
st->subsample = 1;
+ st->everycomp = 1;
st->menudemandfps = 4.0;
@@ -270,6 +274,8 @@ specks_init( int argc, char *argv[] )
st->boxlevels = 0;
st->boxlinewidth = 0.75;
+ st->depthsort = 0;
+
st->clk = NewN(SClock, 1);
clock_init(st->clk);
clock_set_running(st->clk, 1);
@@ -970,7 +976,7 @@ void specks_timerange( struct stuff *st, double *tminp, double *tmaxp )
#endif
) {
*tminp = 0;
- *tmaxp = st->ntimes + 1;
+ *tmaxp = st->ntimes == 0 ? 0 : st->ntimes - 1;
}
}
@@ -1108,6 +1114,7 @@ void specks_set_time( struct stuff *st, double newtime )
#if CAVE
if(ment.tknob[0] == NULL) { /* if not SC99DEMO */
+ struct specklist *sl = st->sl;
if(sl != NULL && memcmp(&sl->interest, &lastinterest, sizeof(Point))
&& (sl->interest.x[0]!=0 || sl->interest.x[1]!=0
|| sl->interest.x[2]!=0)) {
@@ -1248,6 +1255,217 @@ void dumpcpoints( struct cpoint *cp, int n )
}
}
+static Point depth_fwd;
+static float depth_d;
+
+struct order {
+ float z;
+ struct speck *sp;
+ struct specklist *sl;
+};
+
+static int depthcmp( const void *a, const void *b )
+{
+ return ((struct order *)a)->z < ((struct order *)b)->z ? 1
+ : ((struct order *)a)->z > ((struct order *)b)->z ? -1 : 0;
+}
+
+static int additive_blend;
+
+void sortedpolys( struct stuff *st, struct specklist *slhead, Matrix *Tc2wp, float radperpix, float polysize )
+{
+ struct speck *sp, *sbase;
+ struct order *op, *obase;
+ int i, k, total, skip;
+ struct specklist *sl;
+ int usethresh = st->usethresh&P_USETHRESH ? THRESHBIT : 0;
+ int bps = 0;
+ int prevrgba = -1;
+ int usearea = st->polyarea;
+ int sizevar = st->polysizevar;
+ int polyorivar = st->polyorivar0;
+ int texturevar = st->texturevar;
+ int txno;
+ int texturing = -1;
+ float s;
+ float polyminrad = st->polymin * radperpix;
+ float polymaxrad = st->polymax * radperpix;
+ float mins2d = polyminrad * polyminrad;
+ int rgba;
+ int alpha = st->alpha * 255;
+ int nfan = st->npolygon<MAXXYFAN ? st->npolygon : MAXXYFAN;
+ float xyfan[MAXXYFAN][2];
+ Point sfan[MAXXYFAN], pfan[MAXXYFAN];
+ Matrix Tc2w = *Tc2wp;
+ float scl = vlength( (Point *)&Tc2w.m[0*4+0] );
+ Texture *wanttx;
+ int additive = additive_blend;
+ int wantblend = additive;
+
+ int useclip = (st->clipbox.level > 0);
+ Point clipp0 = st->clipbox.p0;
+ Point clipp1 = st->clipbox.p1;
+
+ for(total = 0, sl = slhead; sl != NULL; sl = sl->next) {
+ if(sl->text != NULL || sl->nspecks == 0 || sl->special != SPECKS)
+ continue;
+ skip = st->subsample;
+ if(sl->subsampled != 0) /* if already subsampled */
+ skip /= sl->subsampled;
+ if(skip <= 0) skip = 1;
+
+ if(bps < sl->bytesperspeck) bps = sl->bytesperspeck;
+ if(usethresh) {
+ for(i=sl->nspecks, sp=sl->specks; i>0; i-=skip, sp=NextSpeck(sp,sl,skip)) {
+ if((usethresh & sp->rgba) == 0)
+ total++;
+ }
+ } else {
+ total += sl->nspecks / skip;
+ }
+ }
+
+ obase = op = (struct order *)malloc( (total+1) * sizeof(struct order) );
+ for(sl = slhead; sl != NULL; sl = sl->next) {
+ if(sl->text != NULL || sl->nspecks == 0 || sl->special != SPECKS)
+ continue;
+ skip = st->subsample;
+ if(sl->subsampled != 0) /* if already subsampled */
+ skip /= sl->subsampled;
+ if(skip <= 0) skip = 1;
+ for(i=sl->nspecks, sp=sl->specks; i > 0; i-=skip, sp=NextSpeck(sp,sl,skip)) {
+ float dist;
+ if(usethresh & sp->rgba)
+ continue;
+ dist = VDOT( &sp->p, &depth_fwd ) + depth_d;
+ if(dist < 0)
+ continue;
+ if(useclip &&
+ (sp->p.x[0] < clipp0.x[0] ||
+ sp->p.x[0] > clipp1.x[0] ||
+ sp->p.x[1] < clipp0.x[1] ||
+ sp->p.x[1] > clipp1.x[1] ||
+ sp->p.x[2] < clipp0.x[2] ||
+ sp->p.x[2] > clipp1.x[2]))
+ continue;
+ op->z = dist;
+ op->sp = sp;
+ op->sl = sl;
+ op++;
+ }
+ }
+
+ total = op - obase;
+ qsort( obase, total, sizeof(*obase), depthcmp );
+
+ prevrgba = 0;
+
+ /* Build prototype fan -- unit disk in screen plane */
+ for(i = 0; i < nfan; i++) {
+ float theta = 2*M_PI*i/nfan;
+ xyfan[i][0] = cos(theta);
+ xyfan[i][1] = sin(theta);
+ vcomb( &sfan[i], xyfan[i][0] / scl, (Point *)&Tc2w.m[0*4+0],
+ xyfan[i][1] / scl, (Point *)&Tc2w.m[1*4+0] );
+ }
+
+ if(st->usetextures == 0 || SMALLSPECKSIZE(texturevar) > bps)
+ texturevar = -1;
+ if(SMALLSPECKSIZE(polyorivar) > bps)
+ polyorivar = -1;
+
+ for(i = 0, op = obase; i < total; i++, op++) {
+ float dist, size;
+
+ sp = op->sp;
+ dist = op->z;
+ size = sp->val[sizevar] * polysize;
+ if(usearea) {
+ if(size < dist * dist * mins2d)
+ continue;
+ size = sqrtf(size);
+ } else {
+ if(size < dist * polyminrad)
+ continue;
+ }
+ if(size > dist * polymaxrad)
+ size = dist * polymaxrad;
+
+ rgba = sp->rgba & ~THRESHBIT;
+ if(rgba != prevrgba) {
+ prevrgba = rgba;
+ rgba = RGBALPHA( prevrgba, alpha );
+ glColor4ubv( (GLubyte *)&rgba );
+ }
+
+ if(texturevar >= 0 &&
+ (txno = sp->val[texturevar]) >= 0 &&
+ txno < st->ntextures &&
+ (wanttx = st->textures[txno]) != NULL) {
+
+ txbind( wanttx, &texturing );
+ wantblend = (wanttx->flags & TXF_ADD) ? 1 : additive_blend;
+ } else if(texturing) {
+ glDisable( GL_TEXTURE_2D );
+ texturing = 0;
+ }
+
+ if(wantblend != additive) {
+ additive = wantblend;
+ glBlendFunc( GL_SRC_ALPHA, additive ? GL_ONE : GL_ONE_MINUS_SRC_ALPHA );
+ }
+
+ if(polyorivar >= 0 && sp->val[polyorivar] < 9) {
+ float *xv = &sp->val[polyorivar];
+ float *yv = &sp->val[polyorivar+3];
+
+ glBegin( GL_TRIANGLE_FAN );
+ if(texturing) {
+ for(k = 0; k < nfan; k++) {
+ glTexCoord2fv( &xyfan[k][0] );
+ glVertex3f(
+ sp->p.x[0] + size*(xyfan[k][0]*xv[0] + xyfan[k][1]*yv[0]),
+ sp->p.x[1] + size*(xyfan[k][0]*xv[1] + xyfan[k][1]*yv[1]),
+ sp->p.x[2] + size*(xyfan[k][0]*xv[2] + xyfan[k][1]*yv[2]));
+ }
+ } else {
+ for(k = 0; k < nfan; k++) {
+ glVertex3f(
+ sp->p.x[0] + size*(xyfan[k][0]*xv[0] + xyfan[k][1]*yv[0]),
+ sp->p.x[1] + size*(xyfan[k][0]*xv[1] + xyfan[k][1]*yv[1]),
+ sp->p.x[2] + size*(xyfan[k][0]*xv[2] + xyfan[k][1]*yv[2]));
+ }
+ }
+ glEnd();
+
+ } else {
+ glBegin( GL_TRIANGLE_FAN );
+ if(texturing) {
+ for(k = 0; k < nfan; k++) {
+ glTexCoord2fv( &xyfan[k][0] );
+ glVertex3f(
+ sp->p.x[0] + size*sfan[k].x[0],
+ sp->p.x[1] + size*sfan[k].x[1],
+ sp->p.x[2] + size*sfan[k].x[2] );
+ }
+ } else {
+ for(k = 0; k < nfan; k++) {
+ glVertex3f(
+ sp->p.x[0] + size*sfan[k].x[0],
+ sp->p.x[1] + size*sfan[k].x[1],
+ sp->p.x[2] + size*sfan[k].x[2] );
+ }
+ }
+ glEnd();
+ }
+ }
+ free(obase);
+ if(texturing > 0)
+ txbind( NULL, NULL );
+}
+
+
+
void drawspecks( struct stuff *st )
{
int i, slno, k;
@@ -1271,7 +1489,6 @@ void drawspecks( struct stuff *st )
int randix = 0;
int fast = st->fast;
int inpick = st->inpick;
- int additive_blend = 1;
int usethresh = st->usethresh&P_USETHRESH ? THRESHBIT : 0;
int fixeddist;
float polyminrad, polymaxrad;
@@ -1312,12 +1529,10 @@ void drawspecks( struct stuff *st )
}
-#if !CAVEMENU
{ float r=0,g=0,b=0; /* Ugh. Allow background to be non-black */
- sscanf(parti_bgcolor(NULL), "%f %f %f", &r,&g,&b);
- if(r+g+b > 0) additive_blend = 0;
+ sscanf(parti_bgcolor(NULL), "%f%f%f", &r,&g,&b);
+ additive_blend = (r+g+b == 0);
}
-#endif
if(st->clipbox.level != 0) {
GLdouble plane[4];
@@ -1436,7 +1651,7 @@ void drawspecks( struct stuff *st )
&& st->vdesc[st->curdata][st->sizedby].lum != 0) {
plum *= st->vdesc[st->curdata][st->sizedby].lum;
}
- if(st->subsample > 0)
+ if(st->subsample > 0 && st->everycomp)
plum *= st->subsample; /* Compensate for "every" subsampling */
@@ -1452,6 +1667,7 @@ void drawspecks( struct stuff *st )
if(inpick) glLoadName(0);
+
if(st->usepoly && st->polysize > 0) {
int texturing = 0;
int texturevar = st->usetextures && st->texturevar >= 0
@@ -1483,11 +1699,17 @@ void drawspecks( struct stuff *st )
&& (unsigned int)st->curdata < MAXFILES
&& st->vdesc[st->curdata][st->sizedby].lum != 0)
polysize *= st->vdesc[st->curdata][st->sizedby].lum;
- if(st->subsample > 0)
+ if(st->subsample > 0 && st->everycomp)
polysize *= st->subsample; /* Compensate for "every" subsampling */
}
- for(sl = slhead, slno = 1; sl != NULL; sl = sl->next, slno++) {
+ if(st->depthsort && !inpick) {
+ depth_fwd = fwd;
+ depth_d = fwdd;
+ sortedpolys( st, slhead, &Tc2w, radperpix, polysize );
+
+ } else {
+ for(sl = slhead, slno = 1; sl != NULL; sl = sl->next, slno++) {
if(sl->text != NULL || sl->special != SPECKS) continue;
if(inpick) {
glLoadName(slno);
@@ -1529,10 +1751,8 @@ void drawspecks( struct stuff *st )
} else if(p->size != prevsize) {
float s = scl*size;
for(k = 0; k < nxyfan; k++) {
- tp.x[0] = s*xyfan[k][0];
- tp.x[1] = s*xyfan[k][1];
- tp.x[2] = 0;
- vtfmvector( &fan[k], &tp, &Tc2w );
+ vcomb( &fan[k], s*xyfan[k][0], (Point *)&Tc2w.m[0*4+0],
+ s*xyfan[k][1], (Point *)&Tc2w.m[1*4+0] );
}
prevsize = size;
}
@@ -1548,7 +1768,7 @@ void drawspecks( struct stuff *st )
glEnd();
} else if(texturevar >= 0
- && (txno = (p->val[texturevar] - 1)) >= 0
+ && (txno = p->val[texturevar]) >= 0
&& txno < st->ntextures &&
st->textures[txno] != NULL) {
@@ -1575,9 +1795,10 @@ void drawspecks( struct stuff *st )
}
if(inpick) glPopName();
+ }
}
if(texturing) {
- txload( NULL );
+ txbind( NULL, NULL );
glDisable( GL_TEXTURE_2D );
}
glMatrixMode( GL_TEXTURE );
@@ -1821,7 +2042,7 @@ void drawspecks( struct stuff *st )
glBegin( GL_POINTS );
for(sl = slhead; sl != NULL; sl = sl->next) {
if(sl->text != NULL || sl->special != SPECKS) continue;
- for(i = 0, p = sl->specks; i < sl->nspecks; i+=skip, p= NextSpeck(p, sl, skip)) {
+ for(i = 0, p = sl->specks; i < sl->nspecks; i+=skip, p=NextSpeck(p,sl,skip)) {
int lum, myalpha;
float dist, dist2, dx, dy, dz;
@@ -2664,23 +2885,31 @@ void specks_read( struct stuff **stp, char *fname )
while(--k >= 0) free(path[k]);
} else if(!strcmp(key, "texture")) {
- int txno;
+ int txno = 0;
int txflags = TXF_SCLAMP | TXF_TCLAMP;
int txapply = TXF_DECAL;
int qual = 7;
char *txfname;
key = strtok(NULL, separ);
- while(key != NULL && key[0] == '-') {
- qual |= (strchr(key,'m') ? 4:0) | (strchr(key,'l') ? 2:0) | (strchr(key,'n') ? 1:0);
+ sscanf(key, "%d", &txno);
+ while(key != NULL && (key[0] == '-' || key[0] == '+')) {
+ int tqual = (strchr(key,'m') ? 4:0) |
+ (strchr(key,'l') ? 2:0) |
+ (strchr(key,'n') ? 1:0);
+ if(key[0] == '-') qual &= ~tqual;
+ else qual |= tqual;
+ if(strchr(key,'a')) txflags |= TXF_ALPHA;
+ if(strchr(key,'i')) txflags |= TXF_INTENSITY;
+ if(strchr(key, 'A')) txflags |= TXF_ADD;
if(strchr(key, 'M')) txapply = TXF_MODULATE;
if(strchr(key, 'D')) txapply = TXF_DECAL;
if(strchr(key, 'B')) txapply = TXF_BLEND;
key = strtok(NULL, separ);
}
- if(key == NULL || sscanf(key, "%d", &txno) <= 0
+ if(key == NULL || (txno == 0 && sscanf(key, "%d", &txno) <= 0)
|| (txfname = strtok(NULL, separ)) == NULL) {
- msg("Expected ``texture [-lmnMDB] txno file.sgi'', got %s", oline);
- msg(" (options -l(inear) -m(ipmap) -n(earest) -M(odulate)|-D(ecal)|-B(lend))");
+ msg("Expected ``texture [-lmnaMDB] txno file.sgi'', got %s", oline);
+ msg(" opts: -l(inear) -m(ipmap) -n(earest) -i(intensity) -a(lpha) -A(dd) -M(odulate)|-D(ecal)|-B(lend))");
} else {
txaddentry( &st->textures, &st->ntextures, fname, txno, txfname, txapply, txflags, qual );
}
@@ -3156,7 +3385,7 @@ void set_step( float time0, MenuEnt *me, void *vst ) {
st->timeplay = 0;
me->state = ME_HELD;
}
- clock_set_time( me->val = (int) time0 );
+ clock_set_time( st->clk, me->val = (int) time0 );
/* NOTE we use the static values snapped by the framefunction.
* st->curtime etc. might have changed since then.
*/
@@ -3167,7 +3396,7 @@ void set_step( float time0, MenuEnt *me, void *vst ) {
}
void set_fwd( int fwd, MenuEnt *me, void *st ) {
- clock_set_fwd( st->clk, fwd );
+ clock_set_fwd( ((struct stuff *)st)->clk, fwd );
menu_settitle( me, fwd ? ">>> fwd >>>" : "<<< rev <<<" );
}
@@ -3629,6 +3858,7 @@ int getbool( char *str, int defval ) {
if(!strcasecmp(str, "on")) return 1;
if(!strcasecmp(str, "off")) return 0;
+ if(!strcasecmp(str, "toggle")) return !defval;
if(!strcasecmp(str, "all")) return -1;
v = strtol(str, &ep, 0);
if(str == ep) return defval;
@@ -3688,12 +3918,13 @@ specks_parse_args( struct stuff **stp, int argc, char *argv[] )
" lum const LUM set all particles to be that brightness",
" slum SCALEFACTOR scale particle size by SCALEFACTOR",
" psize SIZE scale particle size by SIZE * SCALEFACTOR",
+" depthsort sort polygons by depth",
" see DATASETNO-or-NAME show that dataset (e.g. \"see 0\" or \"see gas\")",
" read [-t time] DATAFILENAME read data file (e.g. to add new specks)",
" ieee [-t time] IEEEIOFILE read IEEEIO file (starting at given timestep)",
" sdb [-t time] SDBFILE read .sdb star-data file",
" annot [-t time] string set annotation string (for given timestep)",
-" eval DATAFILECOMMAND enter a single datafile command (ditto)",
+" add DATAFILECOMMAND enter a single datafile command (ditto)",
" every N subsample: show every Nth particle",
" bound show bounds (coordinate range of all particles)",
" clipbox {on | off | X0,X1 Y0,Y1 Z0,Z1 | CENX,Y,Z RADX,Y,Z | X0 Y0 Z0 X1 Y1 Z1} clipping region",
@@ -3963,6 +4194,10 @@ specks_parse_args( struct stuff **stp, int argc, char *argv[] )
parti_set_running( st, getbool( argv[1], 1 ) );
st->playnext = 0.0;
+ } else if(!strcmp( argv[0], "depthsort" )) {
+ if(argc > 1) st->depthsort = getbool(argv[1], st->depthsort);
+ msg("depthsort %s", st->depthsort ? "on" : "off" );
+
} else if(!strcmp( argv[0], "fade" )) {
char *fmt = "fade what?";
if(argc>1) {
@@ -4061,6 +4296,8 @@ specks_parse_args( struct stuff **stp, int argc, char *argv[] )
specks_count( st->sl ));
}
+ } else if(!strcmp( argv[0], "gall" ) || !strncmp( argv[0], "allobj", 6 )) {
+ parti_allobjs( argc-1, argv+1 );
} else if(!strcmp(argv[0], "tfm")) {
int inv = 0;
@@ -4358,6 +4595,12 @@ specks_parse_args( struct stuff **stp, int argc, char *argv[] )
msg("display every %dth particle (of %d)",
st->subsample, specks_count(st->sl));
+ } else if(!strncmp( argv[0], "everycomp", 9 )) {
+ st->everycomp = getbool(argv[1], st->everycomp);
+ msg("everycomp %d (%s compensate for \"every\" subsampling)",
+ st->everycomp,
+ st->everycomp ? "do" : "don't");
+
} else if(!strncmp( argv[0], "color", 5 )) {
struct valdesc *vd;
if(argc>1) {
--
GitLab