26 |
|
sprintf(errmsg, "(%s): cannot make illum for %s \"%s\"", |
27 |
|
nm, ofun[ob->otype].funame, ob->oname); |
28 |
|
error(WARNING, errmsg); |
29 |
< |
if (!(il->flags & IL_LIGHT)) |
30 |
< |
printobj(il->altmat, ob); |
29 |
> |
printobj(il->altmat, ob); |
30 |
|
} |
31 |
|
|
32 |
|
|
37 |
|
char *nm; |
38 |
|
{ |
39 |
|
#define MAXMISS (5*n*il->nsamps) |
40 |
< |
int dim[4]; |
41 |
< |
int n, nalt, nazi; |
40 |
> |
int dim[3]; |
41 |
> |
int n, nalt, nazi, h; |
42 |
|
float *distarr; |
43 |
< |
double r1, r2; |
43 |
> |
double sp[2], r1, r2; |
44 |
|
FVECT dn, org, dir; |
45 |
|
FVECT u, v; |
46 |
|
double ur[2], vr[2]; |
55 |
|
return; |
56 |
|
} |
57 |
|
/* set up sampling */ |
58 |
< |
n = PI * il->sampdens; |
59 |
< |
nalt = sqrt(n/PI) + .5; |
60 |
< |
nazi = PI*nalt + .5; |
58 |
> |
if (il->sampdens <= 0) |
59 |
> |
nalt = nazi = 1; |
60 |
> |
else { |
61 |
> |
n = PI * il->sampdens; |
62 |
> |
nalt = sqrt(n/PI) + .5; |
63 |
> |
nazi = PI*nalt + .5; |
64 |
> |
} |
65 |
|
n = nalt*nazi; |
66 |
|
distarr = (float *)calloc(n, 3*sizeof(float)); |
67 |
|
if (distarr == NULL) |
84 |
|
for (dim[2] = 0; dim[2] < nazi; dim[2]++) |
85 |
|
for (i = 0; i < il->nsamps; i++) { |
86 |
|
/* random direction */ |
87 |
< |
dim[3] = 1; |
88 |
< |
r1 = (dim[1]+urand(urind(ilhash(dim,4),i)))/nalt; |
89 |
< |
dim[3] = 2; |
90 |
< |
r2 = (dim[2]+urand(urind(ilhash(dim,4),i)))/nalt; |
87 |
> |
h = ilhash(dim, 3) + i; |
88 |
> |
multisamp(sp, 2, urand(h)); |
89 |
> |
r1 = (dim[1] + sp[0])/nalt; |
90 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
91 |
|
flatdir(dn, r1, r2); |
92 |
|
for (j = 0; j < 3; j++) |
93 |
< |
dir[j] = dn[0]*u[j] + dn[1]*v[j] - dn[2]*fa->norm[j]; |
93 |
> |
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*fa->norm[j]; |
94 |
|
/* random location */ |
95 |
|
do { |
96 |
< |
dim[3] = 3; |
97 |
< |
r1 = ur[0] + (ur[1]-ur[0]) * |
98 |
< |
urand(urind(ilhash(dim,4),i+nmisses)); |
96 |
< |
dim[3] = 4; |
97 |
< |
r2 = vr[0] + (vr[1]-vr[0]) * |
98 |
< |
urand(urind(ilhash(dim,4),i+nmisses)); |
96 |
> |
multisamp(sp, 2, urand(h+4862+nmisses)); |
97 |
> |
r1 = ur[0] + (ur[1]-ur[0]) * sp[0]; |
98 |
> |
r2 = vr[0] + (vr[1]-vr[0]) * sp[1]; |
99 |
|
for (j = 0; j < 3; j++) |
100 |
|
org[j] = r1*u[j] + r2*v[j] |
101 |
|
+ fa->offset*fa->norm[j]; |
111 |
|
for (j = 0; j < 3; j++) |
112 |
|
org[j] += .001*fa->norm[j]; |
113 |
|
/* send sample */ |
114 |
< |
raysamp(distarr+dim[1]*nazi+dim[2], org, dir, rt); |
114 |
> |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
115 |
|
} |
116 |
|
rayflush(rt); |
117 |
< |
/* write out the face w/ distribution */ |
118 |
< |
flatout(il, distarr, nalt, nazi, u, v, fa->norm); |
119 |
< |
illumout(il, ob); |
117 |
> |
/* write out the face and its distribution */ |
118 |
> |
if (average(il, distarr, nalt*nazi)) { |
119 |
> |
if (il->sampdens > 0) |
120 |
> |
flatout(il, distarr, nalt, nazi, u, v, fa->norm); |
121 |
> |
illumout(il, ob); |
122 |
> |
} else |
123 |
> |
printobj(il->altmat, ob); |
124 |
|
/* clean up */ |
125 |
|
freeface(ob); |
126 |
|
free((char *)distarr); |
134 |
|
struct rtproc *rt; |
135 |
|
char *nm; |
136 |
|
{ |
137 |
< |
int dim[4]; |
137 |
> |
int dim[3]; |
138 |
|
int n, nalt, nazi; |
139 |
|
float *distarr; |
140 |
< |
double r1, r2; |
140 |
> |
double sp[4], r1, r2, r3; |
141 |
|
FVECT org, dir; |
142 |
|
FVECT u, v; |
143 |
|
register int i, j; |
145 |
|
if (ob->oargs.nfargs != 4) |
146 |
|
objerror(ob, USER, "bad # of arguments"); |
147 |
|
/* set up sampling */ |
148 |
< |
n = 4.*PI * il->sampdens; |
149 |
< |
nalt = sqrt(n/PI) + .5; |
150 |
< |
nazi = PI*nalt + .5; |
148 |
> |
if (il->sampdens <= 0) |
149 |
> |
nalt = nazi = 1; |
150 |
> |
else { |
151 |
> |
n = 4.*PI * il->sampdens; |
152 |
> |
nalt = sqrt(n/PI) + .5; |
153 |
> |
nazi = PI*nalt + .5; |
154 |
> |
} |
155 |
|
n = nalt*nazi; |
156 |
|
distarr = (float *)calloc(n, 3*sizeof(float)); |
157 |
|
if (distarr == NULL) |
161 |
|
for (dim[1] = 0; dim[1] < nalt; dim[1]++) |
162 |
|
for (dim[2] = 0; dim[2] < nazi; dim[2]++) |
163 |
|
for (i = 0; i < il->nsamps; i++) { |
164 |
+ |
/* next sample point */ |
165 |
+ |
multisamp(sp, 4, urand(ilhash(dim,3)+i)); |
166 |
|
/* random direction */ |
167 |
< |
dim[3] = 1; |
168 |
< |
r1 = (dim[1]+urand(urind(ilhash(dim,4),i)))/nalt; |
159 |
< |
dim[3] = 2; |
160 |
< |
r2 = (dim[2]+urand(urind(ilhash(dim,4),i)))/nalt; |
167 |
> |
r1 = (dim[1] + sp[0])/nalt; |
168 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
169 |
|
rounddir(dir, r1, r2); |
170 |
|
/* random location */ |
171 |
|
mkaxes(u, v, dir); /* yuck! */ |
172 |
< |
dim[3] = 3; |
173 |
< |
r1 = sqrt(urand(urind(ilhash(dim,4),i))); |
174 |
< |
dim[3] = 4; |
175 |
< |
r2 = 2.*PI*urand(urind(ilhash(dim,4),i)); |
176 |
< |
for (j = 0; j < 3; j++) |
177 |
< |
org[j] = ob->oargs.farg[j] + ob->oargs.farg[3] * |
178 |
< |
( r1*cos(r2)*u[j] + r1*sin(r2)*v[j] |
179 |
< |
- sqrt(1.01-r1*r1)*dir[j] ); |
180 |
< |
|
172 |
> |
r3 = sqrt(sp[2]); |
173 |
> |
r2 = 2.*PI*sp[3]; |
174 |
> |
r1 = r3*ob->oargs.farg[3]*cos(r2); |
175 |
> |
r2 = r3*ob->oargs.farg[3]*sin(r2); |
176 |
> |
r3 = ob->oargs.farg[3]*sqrt(1.01-r3*r3); |
177 |
> |
for (j = 0; j < 3; j++) { |
178 |
> |
org[j] = ob->oargs.farg[j] + r1*u[j] + r2*v[j] + |
179 |
> |
r3*dir[j]; |
180 |
> |
dir[j] = -dir[j]; |
181 |
> |
} |
182 |
|
/* send sample */ |
183 |
< |
raysamp(distarr+dim[1]*nazi+dim[2], org, dir, rt); |
183 |
> |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
184 |
|
} |
185 |
|
rayflush(rt); |
186 |
< |
/* write out the sphere w/ distribution */ |
187 |
< |
roundout(il, distarr, nalt, nazi); |
188 |
< |
illumout(il, ob); |
186 |
> |
/* write out the sphere and its distribution */ |
187 |
> |
if (average(il, distarr, nalt*nazi)) { |
188 |
> |
if (il->sampdens > 0) |
189 |
> |
roundout(il, distarr, nalt, nazi); |
190 |
> |
else |
191 |
> |
objerror(ob, WARNING, "diffuse distribution"); |
192 |
> |
illumout(il, ob); |
193 |
> |
} else |
194 |
> |
printobj(il->altmat, ob); |
195 |
|
/* clean up */ |
196 |
|
free((char *)distarr); |
197 |
|
} |
203 |
|
struct rtproc *rt; |
204 |
|
char *nm; |
205 |
|
{ |
206 |
< |
int dim[4]; |
206 |
> |
int dim[3]; |
207 |
|
int n, nalt, nazi; |
208 |
|
float *distarr; |
209 |
< |
double r1, r2; |
209 |
> |
double sp[4], r1, r2, r3; |
210 |
|
FVECT dn, org, dir; |
211 |
|
FVECT u, v; |
212 |
|
register CONE *co; |
214 |
|
/* get/check arguments */ |
215 |
|
co = getcone(ob, 0); |
216 |
|
/* set up sampling */ |
217 |
< |
n = PI * il->sampdens; |
218 |
< |
nalt = sqrt(n/PI) + .5; |
219 |
< |
nazi = PI*nalt + .5; |
217 |
> |
if (il->sampdens <= 0) |
218 |
> |
nalt = nazi = 1; |
219 |
> |
else { |
220 |
> |
n = PI * il->sampdens; |
221 |
> |
nalt = sqrt(n/PI) + .5; |
222 |
> |
nazi = PI*nalt + .5; |
223 |
> |
} |
224 |
|
n = nalt*nazi; |
225 |
|
distarr = (float *)calloc(n, 3*sizeof(float)); |
226 |
|
if (distarr == NULL) |
231 |
|
for (dim[1] = 0; dim[1] < nalt; dim[1]++) |
232 |
|
for (dim[2] = 0; dim[2] < nazi; dim[2]++) |
233 |
|
for (i = 0; i < il->nsamps; i++) { |
234 |
+ |
/* next sample point */ |
235 |
+ |
multisamp(sp, 4, urand(ilhash(dim,3)+i)); |
236 |
|
/* random direction */ |
237 |
< |
dim[3] = 1; |
238 |
< |
r1 = (dim[1]+urand(urind(ilhash(dim,4),i)))/nalt; |
218 |
< |
dim[3] = 2; |
219 |
< |
r2 = (dim[2]+urand(urind(ilhash(dim,4),i)))/nalt; |
237 |
> |
r1 = (dim[1] + sp[0])/nalt; |
238 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
239 |
|
flatdir(dn, r1, r2); |
240 |
|
for (j = 0; j < 3; j++) |
241 |
< |
dir[j] = dn[0]*u[j] + dn[1]*v[j] - dn[2]*co->ad[j]; |
241 |
> |
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*co->ad[j]; |
242 |
|
/* random location */ |
243 |
< |
dim[3] = 3; |
244 |
< |
r1 = sqrt(CO_R0(co)*CO_R0(co) + |
245 |
< |
urand(urind(ilhash(dim,4),i))* |
246 |
< |
(CO_R1(co)*CO_R1(co) - CO_R0(co)*CO_R0(co))); |
247 |
< |
dim[3] = 4; |
229 |
< |
r2 = 2.*PI*urand(urind(ilhash(dim,4),i)); |
243 |
> |
r3 = sqrt(CO_R0(co)*CO_R0(co) + |
244 |
> |
sp[2]*(CO_R1(co)*CO_R1(co) - CO_R0(co)*CO_R0(co))); |
245 |
> |
r2 = 2.*PI*sp[3]; |
246 |
> |
r1 = r3*cos(r2); |
247 |
> |
r2 = r3*sin(r2); |
248 |
|
for (j = 0; j < 3; j++) |
249 |
< |
org[j] = CO_P0(co)[j] + |
250 |
< |
r1*cos(r2)*u[j] + r1*sin(r2)*v[j] |
233 |
< |
+ .001*co->ad[j]; |
249 |
> |
org[j] = CO_P0(co)[j] + r1*u[j] + r1*v[j] + |
250 |
> |
.001*co->ad[j]; |
251 |
|
|
252 |
|
/* send sample */ |
253 |
< |
raysamp(distarr+dim[1]*nazi+dim[2], org, dir, rt); |
253 |
> |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
254 |
|
} |
255 |
|
rayflush(rt); |
256 |
< |
/* write out the ring w/ distribution */ |
257 |
< |
flatout(il, distarr, nalt, nazi, u, v, co->ad); |
258 |
< |
illumout(il, ob); |
256 |
> |
/* write out the ring and its distribution */ |
257 |
> |
if (average(il, distarr, nalt*nazi)) { |
258 |
> |
if (il->sampdens > 0) |
259 |
> |
flatout(il, distarr, nalt, nazi, u, v, co->ad); |
260 |
> |
illumout(il, ob); |
261 |
> |
} else |
262 |
> |
printobj(il->altmat, ob); |
263 |
|
/* clean up */ |
264 |
|
freecone(ob); |
265 |
|
free((char *)distarr); |
289 |
|
|
290 |
|
if (rt->nrays <= 0) |
291 |
|
return; |
292 |
< |
i = 6*rt->nrays + 3; |
293 |
< |
rt->buf[i++] = 0.; rt->buf[i++] = 0.; rt->buf[i] = 0.; |
292 |
> |
bzero(rt->buf+6*rt->nrays, 6*sizeof(float)); |
293 |
> |
errno = 0; |
294 |
|
if ( process(rt->pd, (char *)rt->buf, (char *)rt->buf, |
295 |
|
3*sizeof(float)*rt->nrays, |
296 |
|
6*sizeof(float)*(rt->nrays+1)) < |
346 |
|
d2 = 2.*PI * azi; |
347 |
|
dv[0] = d1*cos(d2); |
348 |
|
dv[1] = d1*sin(d2); |
349 |
< |
dv[2] = sqrt(1. - d1*d1); |
349 |
> |
dv[2] = sqrt(1. - alt); |
350 |
|
} |