38 |
|
char *nm; |
39 |
|
{ |
40 |
|
#define MAXMISS (5*n*il->nsamps) |
41 |
< |
int dim[4]; |
42 |
< |
int n, nalt, nazi; |
41 |
> |
int dim[3]; |
42 |
> |
int n, nalt, nazi, h; |
43 |
|
float *distarr; |
44 |
< |
double r1, r2; |
44 |
> |
double sp[2], r1, r2; |
45 |
|
FVECT dn, org, dir; |
46 |
|
FVECT u, v; |
47 |
|
double ur[2], vr[2]; |
81 |
|
for (dim[2] = 0; dim[2] < nazi; dim[2]++) |
82 |
|
for (i = 0; i < il->nsamps; i++) { |
83 |
|
/* random direction */ |
84 |
< |
dim[3] = 1; |
85 |
< |
r1 = (dim[1]+urand(urind(ilhash(dim,4),i)))/nalt; |
86 |
< |
dim[3] = 2; |
87 |
< |
r2 = (dim[2]+urand(urind(ilhash(dim,4),i)))/nalt; |
84 |
> |
h = ilhash(dim, 3) + i; |
85 |
> |
peano(sp, 2, urand(h), .02); |
86 |
> |
r1 = (dim[1] + sp[0])/nalt; |
87 |
> |
r2 = (dim[2] + sp[1])/nazi; |
88 |
|
flatdir(dn, r1, r2); |
89 |
|
for (j = 0; j < 3; j++) |
90 |
< |
dir[j] = dn[0]*u[j] + dn[1]*v[j] - dn[2]*fa->norm[j]; |
90 |
> |
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*fa->norm[j]; |
91 |
|
/* random location */ |
92 |
|
do { |
93 |
< |
dim[3] = 3; |
94 |
< |
r1 = ur[0] + (ur[1]-ur[0]) * |
95 |
< |
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)); |
93 |
> |
peano(sp, 2, urand(h+nmisses), .01); |
94 |
> |
r1 = ur[0] + (ur[1]-ur[0]) * sp[0]; |
95 |
> |
r2 = vr[0] + (vr[1]-vr[0]) * sp[1]; |
96 |
|
for (j = 0; j < 3; j++) |
97 |
|
org[j] = r1*u[j] + r2*v[j] |
98 |
|
+ fa->offset*fa->norm[j]; |
108 |
|
for (j = 0; j < 3; j++) |
109 |
|
org[j] += .001*fa->norm[j]; |
110 |
|
/* send sample */ |
111 |
< |
raysamp(distarr+dim[1]*nazi+dim[2], org, dir, rt); |
111 |
> |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
112 |
|
} |
113 |
|
rayflush(rt); |
114 |
|
/* write out the face w/ distribution */ |
127 |
|
struct rtproc *rt; |
128 |
|
char *nm; |
129 |
|
{ |
130 |
< |
int dim[4]; |
130 |
> |
int dim[3]; |
131 |
|
int n, nalt, nazi; |
132 |
|
float *distarr; |
133 |
< |
double r1, r2; |
133 |
> |
double sp[4], r1, r2, r3; |
134 |
|
FVECT org, dir; |
135 |
|
FVECT u, v; |
136 |
|
register int i, j; |
150 |
|
for (dim[1] = 0; dim[1] < nalt; dim[1]++) |
151 |
|
for (dim[2] = 0; dim[2] < nazi; dim[2]++) |
152 |
|
for (i = 0; i < il->nsamps; i++) { |
153 |
+ |
/* next sample point */ |
154 |
+ |
peano(sp, 4, urand(ilhash(dim,3)+i), .02); |
155 |
|
/* random direction */ |
156 |
< |
dim[3] = 1; |
157 |
< |
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; |
156 |
> |
r1 = (dim[1] + sp[0])/nalt; |
157 |
> |
r2 = (dim[2] + sp[1])/nazi; |
158 |
|
rounddir(dir, r1, r2); |
159 |
|
/* random location */ |
160 |
|
mkaxes(u, v, dir); /* yuck! */ |
161 |
< |
dim[3] = 3; |
162 |
< |
r1 = sqrt(urand(urind(ilhash(dim,4),i))); |
163 |
< |
dim[3] = 4; |
164 |
< |
r2 = 2.*PI*urand(urind(ilhash(dim,4),i)); |
165 |
< |
for (j = 0; j < 3; j++) |
166 |
< |
org[j] = ob->oargs.farg[j] + ob->oargs.farg[3] * |
167 |
< |
( r1*cos(r2)*u[j] + r1*sin(r2)*v[j] |
168 |
< |
- sqrt(1.01-r1*r1)*dir[j] ); |
169 |
< |
|
161 |
> |
r3 = sqrt(sp[2]); |
162 |
> |
r2 = 2.*PI*sp[3]; |
163 |
> |
r1 = r3*ob->oargs.farg[3]*cos(r2); |
164 |
> |
r2 = r3*ob->oargs.farg[3]*sin(r2); |
165 |
> |
r3 = ob->oargs.farg[3]*sqrt(1.01-r3*r3); |
166 |
> |
for (j = 0; j < 3; j++) { |
167 |
> |
org[j] = ob->oargs.farg[j] + r1*u[j] + r2*v[j] + |
168 |
> |
r3*dir[j]; |
169 |
> |
dir[j] = -dir[j]; |
170 |
> |
} |
171 |
|
/* send sample */ |
172 |
< |
raysamp(distarr+dim[1]*nazi+dim[2], org, dir, rt); |
172 |
> |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
173 |
|
} |
174 |
|
rayflush(rt); |
175 |
|
/* write out the sphere w/ distribution */ |
186 |
|
struct rtproc *rt; |
187 |
|
char *nm; |
188 |
|
{ |
189 |
< |
int dim[4]; |
189 |
> |
int dim[3]; |
190 |
|
int n, nalt, nazi; |
191 |
|
float *distarr; |
192 |
< |
double r1, r2; |
192 |
> |
double sp[4], r1, r2, r3; |
193 |
|
FVECT dn, org, dir; |
194 |
|
FVECT u, v; |
195 |
|
register CONE *co; |
210 |
|
for (dim[1] = 0; dim[1] < nalt; dim[1]++) |
211 |
|
for (dim[2] = 0; dim[2] < nazi; dim[2]++) |
212 |
|
for (i = 0; i < il->nsamps; i++) { |
213 |
+ |
/* next sample point */ |
214 |
+ |
peano(sp, 4, urand(ilhash(dim,3)+i), .02); |
215 |
|
/* random direction */ |
216 |
< |
dim[3] = 1; |
217 |
< |
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; |
216 |
> |
r1 = (dim[1] + sp[0])/nalt; |
217 |
> |
r2 = (dim[2] + sp[1])/nalt; |
218 |
|
flatdir(dn, r1, r2); |
219 |
|
for (j = 0; j < 3; j++) |
220 |
< |
dir[j] = dn[0]*u[j] + dn[1]*v[j] - dn[2]*co->ad[j]; |
220 |
> |
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*co->ad[j]; |
221 |
|
/* random location */ |
222 |
< |
dim[3] = 3; |
223 |
< |
r1 = sqrt(CO_R0(co)*CO_R0(co) + |
224 |
< |
urand(urind(ilhash(dim,4),i))* |
225 |
< |
(CO_R1(co)*CO_R1(co) - CO_R0(co)*CO_R0(co))); |
226 |
< |
dim[3] = 4; |
229 |
< |
r2 = 2.*PI*urand(urind(ilhash(dim,4),i)); |
222 |
> |
r3 = sqrt(CO_R0(co)*CO_R0(co) + |
223 |
> |
sp[2]*(CO_R1(co)*CO_R1(co) - CO_R0(co)*CO_R0(co))); |
224 |
> |
r2 = 2.*PI*sp[3]; |
225 |
> |
r1 = r3*cos(r2); |
226 |
> |
r2 = r3*sin(r2); |
227 |
|
for (j = 0; j < 3; j++) |
228 |
< |
org[j] = CO_P0(co)[j] + |
229 |
< |
r1*cos(r2)*u[j] + r1*sin(r2)*v[j] |
233 |
< |
+ .001*co->ad[j]; |
228 |
> |
org[j] = CO_P0(co)[j] + r1*u[j] + r1*v[j] + |
229 |
> |
.001*co->ad[j]; |
230 |
|
|
231 |
|
/* send sample */ |
232 |
< |
raysamp(distarr+dim[1]*nazi+dim[2], org, dir, rt); |
232 |
> |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
233 |
|
} |
234 |
|
rayflush(rt); |
235 |
|
/* write out the ring w/ distribution */ |
264 |
|
|
265 |
|
if (rt->nrays <= 0) |
266 |
|
return; |
267 |
< |
i = 6*rt->nrays + 3; |
272 |
< |
rt->buf[i++] = 0.; rt->buf[i++] = 0.; rt->buf[i] = 0.; |
267 |
> |
bzero(rt->buf+6*rt->nrays, 6*sizeof(float)); |
268 |
|
if ( process(rt->pd, (char *)rt->buf, (char *)rt->buf, |
269 |
|
3*sizeof(float)*rt->nrays, |
270 |
|
6*sizeof(float)*(rt->nrays+1)) < |
320 |
|
d2 = 2.*PI * azi; |
321 |
|
dv[0] = d1*cos(d2); |
322 |
|
dv[1] = d1*sin(d2); |
323 |
< |
dv[2] = sqrt(1. - d1*d1); |
323 |
> |
dv[2] = sqrt(1. - alt); |
324 |
|
} |