12 |
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13 |
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#include "ray.h" |
14 |
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|
15 |
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#include "octree.h" |
16 |
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|
17 |
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#include "rpaint.h" |
18 |
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19 |
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#include "random.h" |
20 |
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|
21 |
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|
22 |
+ |
getrect(s, r) /* get a box */ |
23 |
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char *s; |
24 |
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register RECT *r; |
25 |
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{ |
26 |
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int x0, y0, x1, y1; |
27 |
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|
28 |
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if (*s && !strncmp(s, "all", strlen(s))) { |
29 |
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r->l = r->d = 0; |
30 |
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r->r = ourview.hresolu; |
31 |
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r->u = ourview.vresolu; |
32 |
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return(0); |
33 |
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} |
34 |
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if (sscanf(s, "%d %d %d %d", &x0, &y0, &x1, &y1) != 4) { |
35 |
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if (dev->getcur == NULL) |
36 |
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return(-1); |
37 |
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(*dev->comout)("Pick first corner\n"); |
38 |
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if ((*dev->getcur)(&x0, &y0) == ABORT) |
39 |
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return(-1); |
40 |
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(*dev->comout)("Pick second corner\n"); |
41 |
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if ((*dev->getcur)(&x1, &y1) == ABORT) |
42 |
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return(-1); |
43 |
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} |
44 |
+ |
if (x0 < x1) { |
45 |
+ |
r->l = x0; |
46 |
+ |
r->r = x1; |
47 |
+ |
} else { |
48 |
+ |
r->l = x1; |
49 |
+ |
r->r = x0; |
50 |
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} |
51 |
+ |
if (y0 < y1) { |
52 |
+ |
r->d = y0; |
53 |
+ |
r->u = y1; |
54 |
+ |
} else { |
55 |
+ |
r->d = y1; |
56 |
+ |
r->u = y0; |
57 |
+ |
} |
58 |
+ |
if (r->l < 0) r->l = 0; |
59 |
+ |
if (r->d < 0) r->d = 0; |
60 |
+ |
if (r->r > ourview.hresolu) r->r = ourview.hresolu; |
61 |
+ |
if (r->u > ourview.vresolu) r->u = ourview.vresolu; |
62 |
+ |
if (r->l > r->r) r->l = r->r; |
63 |
+ |
if (r->d > r->u) r->d = r->u; |
64 |
+ |
return(0); |
65 |
+ |
} |
66 |
+ |
|
67 |
+ |
|
68 |
+ |
getinterest(s, direc, vec, mp) /* get area of interest */ |
69 |
+ |
char *s; |
70 |
+ |
int direc; |
71 |
+ |
FVECT vec; |
72 |
+ |
double *mp; |
73 |
+ |
{ |
74 |
+ |
int x, y; |
75 |
+ |
RAY thisray; |
76 |
+ |
register int i; |
77 |
+ |
|
78 |
+ |
if (sscanf(s, "%lf", mp) != 1) |
79 |
+ |
*mp = 1.0; |
80 |
+ |
else if (*mp < -FTINY) /* negative zoom is reduction */ |
81 |
+ |
*mp = -1.0 / *mp; |
82 |
+ |
else if (*mp <= FTINY) { /* too small */ |
83 |
+ |
error(COMMAND, "illegal magnification"); |
84 |
+ |
return(-1); |
85 |
+ |
} |
86 |
+ |
if (sscanf(s, "%*lf %lf %lf %lf", &vec[0], &vec[1], &vec[2]) != 3) { |
87 |
+ |
if (dev->getcur == NULL) |
88 |
+ |
return(-1); |
89 |
+ |
(*dev->comout)("Pick view center\n"); |
90 |
+ |
if ((*dev->getcur)(&x, &y) == ABORT) |
91 |
+ |
return(-1); |
92 |
+ |
rayview(thisray.rorg, thisray.rdir, &ourview, x+.5, y+.5); |
93 |
+ |
if (!direc || ourview.type == VT_PAR) { |
94 |
+ |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
95 |
+ |
if (!localhit(&thisray, &thescene)) { |
96 |
+ |
error(COMMAND, "not a local object"); |
97 |
+ |
return(-1); |
98 |
+ |
} |
99 |
+ |
} |
100 |
+ |
if (direc) |
101 |
+ |
if (ourview.type == VT_PAR) |
102 |
+ |
for (i = 0; i < 3; i++) |
103 |
+ |
vec[i] = thisray.rop[i] - ourview.vp[i]; |
104 |
+ |
else |
105 |
+ |
VCOPY(vec, thisray.rdir); |
106 |
+ |
else |
107 |
+ |
VCOPY(vec, thisray.rop); |
108 |
+ |
} else if (direc) |
109 |
+ |
for (i = 0; i < 3; i++) |
110 |
+ |
vec[i] -= ourview.vp[i]; |
111 |
+ |
return(0); |
112 |
+ |
} |
113 |
+ |
|
114 |
+ |
|
115 |
|
float * /* keep consistent with COLOR typedef */ |
116 |
|
greyof(col) /* convert color to greyscale */ |
117 |
|
register COLOR col; |
163 |
|
freepkids(&ptrunk); |
164 |
|
/* set up frame */ |
165 |
|
if (ourview.hresolu > dev->xsiz || ourview.vresolu > dev->ysiz) |
166 |
< |
error(USER, "resolution mismatch"); |
166 |
> |
newview(&ourview); /* beware recursive loop! */ |
167 |
|
pframe.l = pframe.d = 0; |
168 |
|
pframe.r = ourview.hresolu; pframe.u = ourview.vresolu; |
169 |
|
pdepth = 0; |
342 |
|
{ |
343 |
|
char *err; |
344 |
|
|
345 |
< |
if (vp->hresolu > dev->xsiz || vp->vresolu > dev->ysiz) { |
346 |
< |
error(COMMAND, "view not set - resolution mismatch"); |
347 |
< |
} else if ((err = setview(vp)) != NULL) { |
345 |
> |
if (vp->hresolu > dev->xsiz || vp->vresolu > dev->ysiz) /* shrink */ |
346 |
> |
if (vp->vresolu * dev->xsiz < vp->hresolu * dev->ysiz) { |
347 |
> |
vp->vresolu = dev->xsiz * vp->vresolu / vp->hresolu; |
348 |
> |
vp->hresolu = dev->xsiz; |
349 |
> |
} else { |
350 |
> |
vp->hresolu = dev->ysiz * vp->hresolu / vp->vresolu; |
351 |
> |
vp->vresolu = dev->ysiz; |
352 |
> |
} |
353 |
> |
if ((err = setview(vp)) != NULL) { |
354 |
|
sprintf(errmsg, "view not set - %s", err); |
355 |
|
error(COMMAND, errmsg); |
356 |
|
} else if (bcmp(vp, &ourview, sizeof(VIEW))) { |
357 |
|
bcopy(&ourview, &oldview, sizeof(VIEW)); |
358 |
|
bcopy(vp, &ourview, sizeof(VIEW)); |
359 |
< |
newimage(); |
359 |
> |
newimage(); /* newimage() calls with vp=&ourview! */ |
360 |
|
} |
361 |
|
} |
362 |
|
|
363 |
|
|
364 |
< |
moveview(angle, mag, vc) /* move viewpoint */ |
365 |
< |
double angle, mag; |
364 |
> |
moveview(angle, elev, mag, vc) /* move viewpoint */ |
365 |
> |
double angle, elev, mag; |
366 |
|
FVECT vc; |
367 |
|
{ |
368 |
|
extern double sqrt(), dist2(); |
369 |
|
double d; |
370 |
+ |
FVECT v1; |
371 |
|
VIEW nv; |
372 |
|
register int i; |
373 |
|
|
374 |
|
VCOPY(nv.vup, ourview.vup); |
375 |
|
nv.hresolu = ourview.hresolu; nv.vresolu = ourview.vresolu; |
376 |
|
spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.)); |
377 |
+ |
if (elev != 0.0) { |
378 |
+ |
fcross(v1, ourview.vup, nv.vdir); |
379 |
+ |
normalize(v1); |
380 |
+ |
spinvector(nv.vdir, nv.vdir, v1, elev*(PI/180.)); |
381 |
+ |
} |
382 |
|
if ((nv.type = ourview.type) == VT_PAR) { |
383 |
|
nv.horiz = ourview.horiz / mag; |
384 |
|
nv.vert = ourview.vert / mag; |