1 |
greg |
3.1 |
#ifndef lint |
2 |
schorsch |
3.7 |
static const char RCSid[] = "$Id: ranimove1.c,v 3.6 2003/07/27 22:12:03 schorsch Exp $"; |
3 |
greg |
3.1 |
#endif |
4 |
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/* |
5 |
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* ranimove1.c |
6 |
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* |
7 |
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* Basic frame rendering routines for ranimate(1). |
8 |
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* |
9 |
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* Created by Gregory Ward on Wed Jan 08 2003. |
10 |
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*/ |
11 |
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12 |
greg |
3.2 |
#include "copyright.h" |
13 |
greg |
3.1 |
|
14 |
schorsch |
3.4 |
#include <string.h> |
15 |
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16 |
schorsch |
3.3 |
#include "platform.h" |
17 |
greg |
3.1 |
#include "ranimove.h" |
18 |
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#include "otypes.h" |
19 |
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#include "random.h" |
20 |
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21 |
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double acctab[256]; /* accuracy value table */ |
22 |
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23 |
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int hres, vres; /* frame resolution (fcur) */ |
24 |
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double pixaspect; /* pixel aspect ratio */ |
25 |
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26 |
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VIEW vw; /* view for this frame */ |
27 |
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COLOR *cbuffer; /* color at each pixel */ |
28 |
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float *zbuffer; /* depth at each pixel */ |
29 |
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OBJECT *obuffer; /* object id at each pixel */ |
30 |
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short *xmbuffer; /* x motion at each pixel */ |
31 |
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short *ymbuffer; /* y motion at each pixel */ |
32 |
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BYTE *abuffer; /* accuracy at each pixel */ |
33 |
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BYTE *sbuffer; /* sample count per pixel */ |
34 |
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35 |
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VIEW vwprev; /* last frame's view */ |
36 |
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COLOR *cprev; /* last frame colors */ |
37 |
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float *zprev; /* last frame depth */ |
38 |
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OBJECT *oprev; /* last frame objects */ |
39 |
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BYTE *aprev; /* last frame accuracy */ |
40 |
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41 |
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float *cerrmap; /* conspicuous error map */ |
42 |
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COLOR *val2map; /* value-squared map for variance */ |
43 |
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44 |
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double frm_stop; /* when to stop rendering this frame */ |
45 |
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46 |
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double hlsmax; /* maximum high-level saliency this frame */ |
47 |
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48 |
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49 |
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void |
50 |
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write_map(mp, fn) /* write out float map (debugging) */ |
51 |
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float *mp; |
52 |
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char *fn; |
53 |
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{ |
54 |
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FILE *fp = fopen(fn, "w"); |
55 |
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COLOR scanbuf[2048]; |
56 |
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int x, y; |
57 |
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58 |
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if (fp == NULL) |
59 |
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return; |
60 |
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newheader("RADIANCE", fp); |
61 |
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fputformat(COLRFMT, fp); |
62 |
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fputc('\n', fp); /* end header */ |
63 |
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fprtresolu(hres, vres, fp); |
64 |
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for (y = vres; y--; ) { /* write scanlines */ |
65 |
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float *bp = mp + (y+1)*hres - 1; |
66 |
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for (x = hres; x--; bp--) |
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setcolor(scanbuf[x], *bp, *bp, *bp); |
68 |
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if (fwritescan(scanbuf, hres, fp) < 0) |
69 |
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break; |
70 |
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} |
71 |
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fclose(fp); |
72 |
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} |
73 |
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74 |
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75 |
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static void |
76 |
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next_frame() /* prepare next frame buffer */ |
77 |
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{ |
78 |
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VIEW *fv; |
79 |
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char *err; |
80 |
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/* get previous view */ |
81 |
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if (vw.type != 0) |
82 |
schorsch |
3.5 |
vwprev = vw; |
83 |
greg |
3.1 |
else if (fcur > 1 && (fv = getview(fcur-1)) != NULL) { |
84 |
schorsch |
3.5 |
vwprev = *fv; |
85 |
greg |
3.1 |
if (setview(&vwprev) != NULL) |
86 |
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vwprev.type = 0; |
87 |
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} |
88 |
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/* get current view */ |
89 |
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if ((fv = getview(fcur)) == NULL) { |
90 |
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sprintf(errmsg, "cannot get view for frame %d", fcur); |
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error(USER, errmsg); |
92 |
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} |
93 |
schorsch |
3.5 |
vw = *fv; |
94 |
greg |
3.1 |
if ((err = setview(&vw)) != NULL) { |
95 |
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sprintf(errmsg, "view error at frame %d: %s", fcur, err); |
96 |
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error(USER, errmsg); |
97 |
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} |
98 |
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if (cbuffer == NULL) { |
99 |
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/* compute resolution and allocate */ |
100 |
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switch (sscanf(vval(RESOLUTION), "%d %d %lf", |
101 |
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&hres, &vres, &pixaspect)) { |
102 |
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case 1: |
103 |
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vres = hres; |
104 |
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/* fall through */ |
105 |
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case 2: |
106 |
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pixaspect = 1.; |
107 |
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/* fall through */ |
108 |
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case 3: |
109 |
schorsch |
3.6 |
if ((hres > 0) & (vres > 0)) |
110 |
greg |
3.1 |
break; |
111 |
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/* fall through */ |
112 |
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default: |
113 |
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sprintf(errmsg, "bad %s value", vnam(RESOLUTION)); |
114 |
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error(USER, errmsg); |
115 |
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} |
116 |
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normaspect(viewaspect(&vw), &pixaspect, &hres, &vres); |
117 |
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cbuffer = (COLOR *)malloc(sizeof(COLOR)*hres*vres); |
118 |
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zbuffer = (float *)malloc(sizeof(float)*hres*vres); |
119 |
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obuffer = (OBJECT *)malloc(sizeof(OBJECT)*hres*vres); |
120 |
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xmbuffer = (short *)malloc(sizeof(short)*hres*vres); |
121 |
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ymbuffer = (short *)malloc(sizeof(short)*hres*vres); |
122 |
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abuffer = (BYTE *)calloc(hres*vres, sizeof(BYTE)); |
123 |
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sbuffer = (BYTE *)calloc(hres*vres, sizeof(BYTE)); |
124 |
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cprev = (COLOR *)malloc(sizeof(COLOR)*hres*vres); |
125 |
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zprev = (float *)malloc(sizeof(float)*hres*vres); |
126 |
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oprev = (OBJECT *)malloc(sizeof(OBJECT)*hres*vres); |
127 |
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aprev = (BYTE *)malloc(sizeof(BYTE)*hres*vres); |
128 |
schorsch |
3.6 |
if ((cbuffer==NULL) | (zbuffer==NULL) | (obuffer==NULL) | |
129 |
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(xmbuffer==NULL) | (ymbuffer==NULL) | |
130 |
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(abuffer==NULL) | (sbuffer==NULL) | |
131 |
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(cprev==NULL) | (zprev == NULL) | |
132 |
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(oprev==NULL) | (aprev==NULL)) |
133 |
greg |
3.1 |
error(SYSTEM, "out of memory in init_frame"); |
134 |
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frm_stop = getTime() + rtperfrm; |
135 |
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} else { |
136 |
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COLOR *cp; /* else just swap buffers */ |
137 |
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float *fp; |
138 |
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OBJECT *op; |
139 |
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BYTE *bp; |
140 |
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cp = cprev; cprev = cbuffer; cbuffer = cp; |
141 |
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fp = zprev; zprev = zbuffer; zbuffer = fp; |
142 |
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op = oprev; oprev = obuffer; obuffer = op; |
143 |
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bp = aprev; aprev = abuffer; abuffer = bp; |
144 |
schorsch |
3.4 |
memset(abuffer, '\0', sizeof(BYTE)*hres*vres); |
145 |
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memset(sbuffer, '\0', sizeof(BYTE)*hres*vres); |
146 |
greg |
3.1 |
frm_stop += rtperfrm; |
147 |
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} |
148 |
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cerrmap = NULL; |
149 |
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val2map = NULL; |
150 |
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} |
151 |
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152 |
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153 |
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#define SAMPDIST 3 /* Maximum distance to neighbor sample */ |
154 |
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#define SAMPDIST2 (SAMPDIST*SAMPDIST) |
155 |
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156 |
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157 |
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static int |
158 |
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sample_here(x, y) /* 4x4 quincunx sample at this pixel? */ |
159 |
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register int x, y; |
160 |
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{ |
161 |
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if (y & 0x1) /* every other row has samples */ |
162 |
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return(0); |
163 |
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if (y & 0x3) /* every fourth row is offset */ |
164 |
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x += 2; |
165 |
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return((x & 0x3) == 0); /* every fourth column is sampled */ |
166 |
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} |
167 |
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168 |
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169 |
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void |
170 |
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sample_pos(hv, x, y, sn) /* compute jittered sample position */ |
171 |
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double hv[2]; |
172 |
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int x, y; |
173 |
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int sn; |
174 |
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{ |
175 |
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int hl[2]; |
176 |
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177 |
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hl[0] = x; hl[1] = y; |
178 |
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multisamp(hv, 2, urand(ilhash(hl,2) + sn)); |
179 |
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hv[0] = ((double)x + hv[0]) / (double)hres; |
180 |
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hv[1] = ((double)y + hv[1]) / (double)vres; |
181 |
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} |
182 |
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183 |
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184 |
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double |
185 |
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sample_wt(xo, yo) /* compute interpolant sample weight */ |
186 |
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int xo, yo; |
187 |
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{ |
188 |
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static double etab[400]; |
189 |
schorsch |
3.7 |
/* we can't use the name rad2 here, for some reason Visual C |
190 |
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thinks that is a constant (compiler bug?) */ |
191 |
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int rad_2 = xo*xo + yo*yo; |
192 |
greg |
3.1 |
int i; |
193 |
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194 |
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if (etab[0] <= FTINY) /* initialize exponent table */ |
195 |
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for (i = 400; i--; ) |
196 |
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etab[i] = exp(-0.1*i); |
197 |
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198 |
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/* look up Gaussian */ |
199 |
schorsch |
3.7 |
i = (int)((10.*3./(double)SAMPDIST2)*rad_2 + .5); |
200 |
greg |
3.1 |
if (i >= 400) |
201 |
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return(0.0); |
202 |
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return(etab[i]); |
203 |
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} |
204 |
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205 |
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206 |
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static int |
207 |
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offset_cmp(p1, p2) /* compare offset distances */ |
208 |
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const void *p1, *p2; |
209 |
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{ |
210 |
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return(*(const int *)p1 - *(const int *)p2); |
211 |
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} |
212 |
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213 |
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214 |
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int |
215 |
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getclosest(iarr, nc, x, y) /* get nc closest neighbors on same object */ |
216 |
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int *iarr; |
217 |
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int nc; |
218 |
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int x, y; |
219 |
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{ |
220 |
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#define NSCHECK ((2*SAMPDIST+1)*(2*SAMPDIST+1)) |
221 |
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static int hro, vro; |
222 |
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static int ioffs[NSCHECK]; |
223 |
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OBJECT myobj; |
224 |
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int i0, nf; |
225 |
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register int i, j; |
226 |
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/* get our object number */ |
227 |
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myobj = obuffer[fndx(x, y)]; |
228 |
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/* special case for borders */ |
229 |
schorsch |
3.6 |
if ((x < SAMPDIST) | (x >= hres-SAMPDIST) | |
230 |
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(y < SAMPDIST) | (y >= vres-SAMPDIST)) { |
231 |
greg |
3.1 |
int tndx[NSCHECK][2]; |
232 |
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nf = 0; |
233 |
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for (j = y - SAMPDIST; j <= y + SAMPDIST; j++) { |
234 |
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if (j >= vres) break; |
235 |
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if (j < 0) j = 0; |
236 |
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for (i = x - SAMPDIST; i <= x + SAMPDIST; i++) { |
237 |
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if (i >= hres) break; |
238 |
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if (i < 0) i = 0; |
239 |
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i0 = fndx(i, j); |
240 |
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if (!sbuffer[i0]) |
241 |
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continue; |
242 |
schorsch |
3.6 |
if ((myobj != OVOID) & (obuffer[i0] != myobj)) |
243 |
greg |
3.1 |
continue; |
244 |
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tndx[nf][0] = (i-x)*(i-x) + (j-y)*(j-y); |
245 |
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tndx[nf][1] = i0; |
246 |
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nf++; |
247 |
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} |
248 |
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} |
249 |
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qsort((void *)tndx, nf, 2*sizeof(int), offset_cmp); |
250 |
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if (nf > nc) |
251 |
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nf = nc; |
252 |
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for (i = nf; i--; ) |
253 |
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iarr[i] = tndx[i][1]; |
254 |
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return(nf); |
255 |
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} |
256 |
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/* initialize offset array */ |
257 |
schorsch |
3.6 |
if ((hres != hro) | (vres != vro)) { |
258 |
greg |
3.1 |
int toffs[NSCHECK][2]; |
259 |
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i0 = fndx(SAMPDIST, SAMPDIST); |
260 |
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nf = 0; |
261 |
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for (i = 0; i <= 2*SAMPDIST; i++) |
262 |
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for (j = 0; j <= 2*SAMPDIST; j++) { |
263 |
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toffs[nf][0] = (i-SAMPDIST)*(i-SAMPDIST) + |
264 |
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(j-SAMPDIST)*(j-SAMPDIST); |
265 |
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toffs[nf][1] = fndx(i, j) - i0; |
266 |
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nf++; |
267 |
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} |
268 |
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qsort((void *)toffs, nf, 2*sizeof(int), offset_cmp); |
269 |
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for (i = NSCHECK; i--; ) |
270 |
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ioffs[i] = toffs[i][1]; |
271 |
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hro = hres; |
272 |
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vro = vres; |
273 |
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} |
274 |
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/* find up to nc neighbors */ |
275 |
|
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i0 = fndx(x, y); |
276 |
schorsch |
3.6 |
for (j = 0, nf = 0; (j < NSCHECK) & (nf < nc); j++) { |
277 |
greg |
3.1 |
i = i0 + ioffs[j]; |
278 |
schorsch |
3.6 |
if (sbuffer[i] && (myobj == OVOID) | (obuffer[i] == myobj)) |
279 |
greg |
3.1 |
iarr[nf++] = i; |
280 |
|
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} |
281 |
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/* return number found */ |
282 |
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return(nf); |
283 |
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#undef NSCHECK |
284 |
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} |
285 |
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286 |
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287 |
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static void |
288 |
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setmotion(n, wpos) /* compute motion vector for this pixel */ |
289 |
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register int n; |
290 |
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FVECT wpos; |
291 |
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{ |
292 |
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FVECT ovp; |
293 |
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MAT4 xfm; |
294 |
|
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double d; |
295 |
|
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int moi; |
296 |
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int xp, yp; |
297 |
|
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/* ID object and update maximum HLS */ |
298 |
|
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moi = getmove(obuffer[n]); |
299 |
|
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if (moi >= 0 && obj_move[moi].cprio > hlsmax) |
300 |
|
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hlsmax = obj_move[moi].cprio; |
301 |
|
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if (vwprev.type == 0) /* return leaves MO_UNK */ |
302 |
|
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return; |
303 |
|
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if (moi >= 0) { /* move object point back */ |
304 |
|
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multp3(ovp, wpos, obj_move[moi].bxfm); |
305 |
|
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wpos = ovp; |
306 |
|
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} |
307 |
|
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viewloc(ovp, &vwprev, wpos); |
308 |
|
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if (ovp[2] <= FTINY) |
309 |
|
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return; |
310 |
|
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xp = (int)(ovp[0]*hres); |
311 |
|
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yp = (int)(ovp[1]*vres); |
312 |
|
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xmbuffer[n] = xp - (n % hres); |
313 |
|
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ymbuffer[n] = yp - (n / hres); |
314 |
schorsch |
3.6 |
if ((xp < 0) | (xp >= hres)) |
315 |
greg |
3.1 |
return; |
316 |
schorsch |
3.6 |
if ((yp < 0) | (yp >= vres)) |
317 |
greg |
3.1 |
return; |
318 |
|
|
n = fndx(xp, yp); |
319 |
schorsch |
3.6 |
if ((zprev[n] < 0.97*ovp[2]) | (zprev[n] > 1.03*ovp[2])) |
320 |
greg |
3.1 |
oprev[n] = OVOID; /* assume it's a bad match */ |
321 |
|
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} |
322 |
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|
323 |
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|
324 |
|
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static void |
325 |
|
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init_frame_sample() /* sample our initial frame */ |
326 |
|
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{ |
327 |
|
|
RAY ir; |
328 |
|
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int x, y; |
329 |
|
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register int n; |
330 |
|
|
|
331 |
|
|
if (!silent) { |
332 |
|
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printf("\tComputing initial samples..."); |
333 |
|
|
fflush(stdout); |
334 |
|
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} |
335 |
|
|
hlsmax = CSF_SMN; |
336 |
|
|
for (y = vres; y--; ) |
337 |
|
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for (x = hres; x--; ) { |
338 |
|
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double hv[2]; |
339 |
|
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n = fndx(x, y); |
340 |
|
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xmbuffer[n] = MO_UNK; |
341 |
|
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ymbuffer[n] = MO_UNK; |
342 |
|
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sample_pos(hv, x, y, 0); |
343 |
|
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ir.rmax = viewray(ir.rorg, ir.rdir, &vw, hv[0], hv[1]); |
344 |
|
|
if (ir.rmax < -FTINY) { |
345 |
|
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setcolor(cbuffer[n], 0., 0., 0.); |
346 |
|
|
zbuffer[n] = FHUGE; |
347 |
|
|
obuffer[n] = OVOID; |
348 |
|
|
abuffer[n] = ADISTANT; |
349 |
|
|
continue; |
350 |
|
|
} |
351 |
|
|
if (!sample_here(x, y)) { /* just cast */ |
352 |
|
|
rayorigin(&ir, NULL, PRIMARY, 1.0); |
353 |
|
|
if (!localhit(&ir, &thescene)) { |
354 |
|
|
if (ir.ro != &Aftplane) |
355 |
|
|
sourcehit(&ir); |
356 |
|
|
copycolor(cbuffer[n], ir.rcol); |
357 |
|
|
zbuffer[n] = ir.rot; |
358 |
|
|
obuffer[n] = ir.robj; |
359 |
|
|
abuffer[n] = ADISTANT; |
360 |
|
|
sbuffer[n] = 1; |
361 |
|
|
} else { |
362 |
|
|
zbuffer[n] = ir.rot; |
363 |
|
|
obuffer[n] = ir.robj; |
364 |
|
|
setmotion(n, ir.rop); |
365 |
|
|
} |
366 |
|
|
continue; |
367 |
|
|
} |
368 |
|
|
if (nprocs > 1) { /* get sample */ |
369 |
|
|
int rval; |
370 |
|
|
rayorigin(&ir, NULL, PRIMARY, 1.0); |
371 |
|
|
ir.rno = n; |
372 |
|
|
rval = ray_pqueue(&ir); |
373 |
|
|
if (!rval) |
374 |
|
|
continue; |
375 |
|
|
if (rval < 0) |
376 |
|
|
quit(1); |
377 |
|
|
n = ir.rno; |
378 |
|
|
} else |
379 |
|
|
ray_trace(&ir); |
380 |
|
|
copycolor(cbuffer[n], ir.rcol); |
381 |
|
|
zbuffer[n] = ir.rot; |
382 |
|
|
obuffer[n] = ir.robj; |
383 |
|
|
sbuffer[n] = 1; |
384 |
|
|
if (ir.rot >= FHUGE) |
385 |
|
|
abuffer[n] = ADISTANT; |
386 |
|
|
else { |
387 |
|
|
abuffer[n] = ALOWQ; |
388 |
|
|
setmotion(n, ir.rop); |
389 |
|
|
} |
390 |
|
|
} |
391 |
|
|
if (nprocs > 1) /* get stragglers */ |
392 |
|
|
while (ray_presult(&ir, 0)) { |
393 |
|
|
n = ir.rno; |
394 |
|
|
copycolor(cbuffer[n], ir.rcol); |
395 |
|
|
zbuffer[n] = ir.rot; |
396 |
|
|
obuffer[n] = ir.robj; |
397 |
|
|
sbuffer[n] = 1; |
398 |
|
|
if (ir.rot >= FHUGE) |
399 |
|
|
abuffer[n] = ADISTANT; |
400 |
|
|
else { |
401 |
|
|
abuffer[n] = ALOWQ; |
402 |
|
|
setmotion(n, ir.rop); |
403 |
|
|
} |
404 |
|
|
} |
405 |
|
|
/* ambiguate object boundaries */ |
406 |
|
|
for (y = vres-1; y--; ) |
407 |
|
|
for (x = hres-1; x--; ) { |
408 |
|
|
OBJECT obj; |
409 |
|
|
n = fndx(x, y); |
410 |
|
|
if ((obj = obuffer[n]) == OVOID) |
411 |
|
|
continue; |
412 |
schorsch |
3.6 |
if ((obuffer[n+1] != OVOID) & (obuffer[n+1] != obj)) { |
413 |
greg |
3.1 |
obuffer[n] = OVOID; |
414 |
|
|
obuffer[n+1] = OVOID; |
415 |
|
|
} |
416 |
schorsch |
3.6 |
if ((obuffer[n+hres] != OVOID) & (obuffer[n+hres] != obj)) { |
417 |
greg |
3.1 |
obuffer[n] = OVOID; |
418 |
|
|
obuffer[n+hres] = OVOID; |
419 |
|
|
} |
420 |
|
|
} |
421 |
|
|
|
422 |
|
|
if (!silent) |
423 |
|
|
printf("done\n"); |
424 |
|
|
} |
425 |
|
|
|
426 |
|
|
|
427 |
|
|
int |
428 |
|
|
getambcolor(clr, obj) /* get ambient color for object if we can */ |
429 |
|
|
COLOR clr; |
430 |
|
|
int obj; |
431 |
|
|
{ |
432 |
|
|
register OBJREC *op; |
433 |
|
|
|
434 |
|
|
if (obj == OVOID) |
435 |
|
|
return(0); |
436 |
|
|
op = objptr(obj); |
437 |
schorsch |
3.6 |
if ((op->otype == OBJ_INSTANCE) & (op->omod == OVOID)) |
438 |
greg |
3.1 |
return(0); |
439 |
|
|
/* search for material */ |
440 |
|
|
do { |
441 |
|
|
if (op->omod == OVOID || ofun[op->otype].flags & T_X) |
442 |
|
|
return(0); |
443 |
|
|
op = objptr(op->omod); |
444 |
|
|
} while (!ismaterial(op->otype)); |
445 |
|
|
/* |
446 |
|
|
* Since this routine is called to compute the difference |
447 |
|
|
* from rendering with and without interreflections, |
448 |
|
|
* we don't want to return colors for materials that are |
449 |
|
|
* explicitly excluded from the HQ ambient calculation. |
450 |
|
|
*/ |
451 |
|
|
if (hirendparams.ambincl >= 0) { |
452 |
|
|
int i; |
453 |
|
|
char *lv; |
454 |
|
|
for (i = 0; (lv = rpambmod(&hirendparams,i)) != NULL; i++) |
455 |
|
|
if (lv[0] == op->oname[0] && |
456 |
|
|
!strcmp(lv+1, op->oname+1)) |
457 |
|
|
break; |
458 |
|
|
if ((lv != NULL) != hirendparams.ambincl) |
459 |
|
|
return(0); |
460 |
|
|
} |
461 |
|
|
switch (op->otype) { |
462 |
|
|
case MAT_PLASTIC: |
463 |
|
|
case MAT_METAL: |
464 |
|
|
case MAT_PLASTIC2: |
465 |
|
|
case MAT_METAL2: |
466 |
|
|
case MAT_PFUNC: |
467 |
|
|
case MAT_MFUNC: |
468 |
|
|
case MAT_PDATA: |
469 |
|
|
case MAT_MDATA: |
470 |
|
|
case MAT_TRANS: |
471 |
|
|
case MAT_TRANS2: |
472 |
|
|
case MAT_TFUNC: |
473 |
|
|
case MAT_TDATA: |
474 |
|
|
if (op->oargs.nfargs < 3) |
475 |
|
|
return(0); |
476 |
|
|
setcolor(clr, op->oargs.farg[0], op->oargs.farg[1], |
477 |
|
|
op->oargs.farg[2]); |
478 |
|
|
return(1); |
479 |
|
|
case MAT_BRTDF: |
480 |
|
|
if (op->oargs.nfargs < 6) |
481 |
|
|
return(0); |
482 |
|
|
setcolor(clr, op->oargs.farg[0]+op->oargs.farg[3], |
483 |
|
|
op->oargs.farg[1]+op->oargs.farg[4], |
484 |
|
|
op->oargs.farg[2]+op->oargs.farg[5]); |
485 |
|
|
scalecolor(clr, 0.5); |
486 |
|
|
return(1); |
487 |
|
|
case MAT_LIGHT: |
488 |
|
|
case MAT_GLOW: |
489 |
|
|
case MAT_ILLUM: |
490 |
|
|
setcolor(clr, 0., 0., 0.); |
491 |
|
|
return(1); |
492 |
|
|
} |
493 |
|
|
return(0); |
494 |
|
|
} |
495 |
|
|
|
496 |
|
|
|
497 |
|
|
double |
498 |
|
|
estimaterr(cs, cs2, ns, ns0) /* estimate relative error from samples */ |
499 |
|
|
COLOR cs, cs2; |
500 |
|
|
int ns; |
501 |
|
|
{ |
502 |
|
|
double d, d2, brt; |
503 |
|
|
|
504 |
|
|
if (ns <= 1 || (brt = bright(cs)/ns) < 1e-14) |
505 |
|
|
return(1.0); |
506 |
|
|
/* use largest of RGB std. dev. */ |
507 |
|
|
d2 = colval(cs2,RED) - colval(cs,RED)*colval(cs,RED)/ns; |
508 |
|
|
d = colval(cs2,GRN) - colval(cs,GRN)*colval(cs,GRN)/ns; |
509 |
|
|
if (d > d2) d2 = d; |
510 |
|
|
d = colval(cs2,BLU) - colval(cs,BLU)*colval(cs,BLU)/ns; |
511 |
|
|
if (d > d2) d2 = d; |
512 |
|
|
/* use s.d. if <= 1 central sample */ |
513 |
|
|
if (ns0 <= 1) |
514 |
|
|
return(sqrt(d2/(ns-1))/brt); |
515 |
|
|
/* use s.d./sqrt(ns0) otherwise */ |
516 |
|
|
return(sqrt(d2/((ns-1)*ns0))/brt); |
517 |
|
|
} |
518 |
|
|
|
519 |
|
|
|
520 |
|
|
double |
521 |
|
|
comperr(neigh, nc, ns0) /* estimate relative error in neighborhood */ |
522 |
|
|
int *neigh; |
523 |
|
|
int nc; |
524 |
|
|
int ns0; |
525 |
|
|
{ |
526 |
|
|
COLOR csum, csum2; |
527 |
|
|
COLOR ctmp; |
528 |
|
|
int i; |
529 |
|
|
int ns; |
530 |
|
|
register int n; |
531 |
|
|
/* add together samples */ |
532 |
|
|
setcolor(csum, 0., 0., 0.); |
533 |
|
|
setcolor(csum2, 0., 0., 0.); |
534 |
schorsch |
3.6 |
for (i = 0, ns = 0; (i < nc) & (ns < NSAMPOK); i++) { |
535 |
greg |
3.1 |
n = neigh[i]; |
536 |
|
|
addcolor(csum, cbuffer[n]); |
537 |
|
|
if (val2map != NULL) { |
538 |
|
|
addcolor(csum2, val2map[n]); |
539 |
|
|
ns += sbuffer[n]; |
540 |
|
|
continue; |
541 |
|
|
} |
542 |
|
|
if (sbuffer[n] != 1) |
543 |
|
|
error(CONSISTENCY, "bad count in comperr"); |
544 |
|
|
setcolor(ctmp, |
545 |
|
|
colval(cbuffer[n],RED)*colval(cbuffer[n],RED), |
546 |
|
|
colval(cbuffer[n],GRN)*colval(cbuffer[n],GRN), |
547 |
|
|
colval(cbuffer[n],BLU)*colval(cbuffer[n],BLU)); |
548 |
|
|
addcolor(csum2, ctmp); |
549 |
|
|
ns++; |
550 |
|
|
} |
551 |
|
|
return(estimaterr(csum, csum2, ns, ns0)); |
552 |
|
|
} |
553 |
|
|
|
554 |
|
|
|
555 |
|
|
void |
556 |
|
|
comp_frame_error() /* initialize frame error values */ |
557 |
|
|
{ |
558 |
|
|
BYTE *edone = NULL; |
559 |
|
|
COLOR objamb; |
560 |
|
|
double eest; |
561 |
|
|
int neigh[NSAMPOK]; |
562 |
|
|
int nc; |
563 |
|
|
int x, y, i, j; |
564 |
|
|
register int n; |
565 |
|
|
|
566 |
|
|
if (!silent) { |
567 |
|
|
printf("\tComputing error map\n"); |
568 |
|
|
fflush(stdout); |
569 |
|
|
} |
570 |
|
|
if (acctab[0] <= FTINY) /* initialize accuracy table */ |
571 |
|
|
for (i = 256; i--; ) |
572 |
|
|
acctab[i] = errorf(i); |
573 |
|
|
/* estimate sample error */ |
574 |
|
|
if (!curparams->ambounce && hirendparams.ambounce) { |
575 |
|
|
/* |
576 |
|
|
* Our error estimate for the initial value is based |
577 |
|
|
* on the assumption that most of it comes from the |
578 |
|
|
* lack of an interreflection calculation. The relative |
579 |
|
|
* error should be less than the ambient value divided |
580 |
|
|
* by the returned ray value -- we take half of this. |
581 |
|
|
*/ |
582 |
|
|
edone = (BYTE *)calloc(hres*vres, sizeof(BYTE)); |
583 |
|
|
for (y = vres; y--; ) |
584 |
|
|
for (x = hres; x--; ) { |
585 |
|
|
n = fndx(x, y); |
586 |
schorsch |
3.6 |
if ((abuffer[n] != ALOWQ) | (obuffer[n] == OVOID)) |
587 |
greg |
3.1 |
continue; |
588 |
|
|
if (!getambcolor(objamb, obuffer[n])) |
589 |
|
|
continue; |
590 |
|
|
multcolor(objamb, ambval); |
591 |
|
|
if ((eest = bright(cbuffer[n])) <= FTINY) |
592 |
|
|
continue; |
593 |
|
|
eest = bright(objamb) / eest; |
594 |
|
|
if (eest > 1.) /* should we report this? */ |
595 |
|
|
continue; |
596 |
|
|
eest *= 0.50; /* use 50% ambient error */ |
597 |
|
|
i = errori(eest); |
598 |
|
|
if (i < AMIN) i = AMIN; |
599 |
|
|
else if (i >= ADISTANT/2) i = ADISTANT/2-1; |
600 |
|
|
abuffer[n] = i; |
601 |
|
|
edone[n] = 1; |
602 |
|
|
} |
603 |
|
|
} |
604 |
|
|
/* final statistical estimate */ |
605 |
|
|
for (y = vres; y--; ) |
606 |
|
|
for (x = hres; x--; ) { |
607 |
|
|
n = fndx(x, y); |
608 |
|
|
if (abuffer[n] == ADISTANT) |
609 |
|
|
continue; /* don't update these */ |
610 |
|
|
if (edone != NULL && edone[n]) |
611 |
|
|
continue; /* already done this */ |
612 |
|
|
if (sbuffer[n] >= 255) { |
613 |
|
|
abuffer[n] = ADISTANT; |
614 |
|
|
continue; /* can't take any more */ |
615 |
|
|
} |
616 |
|
|
nc = getclosest(neigh, NSAMPOK, x, y); |
617 |
|
|
if (nc <= 0) { |
618 |
|
|
abuffer[n] = ANOVAL; |
619 |
|
|
continue; /* no clue what to do for him */ |
620 |
|
|
} |
621 |
|
|
i = errori(comperr(neigh, nc, sbuffer[n])); |
622 |
|
|
if (i < AMIN) i = AMIN; |
623 |
|
|
else if (i >= ADISTANT) i = ADISTANT-1; |
624 |
|
|
abuffer[n] = i; |
625 |
|
|
/* can't be better than closest */ |
626 |
|
|
if (i < abuffer[neigh[0]] && abuffer[neigh[0]] >= AMIN) |
627 |
|
|
abuffer[n] = abuffer[neigh[0]]; |
628 |
|
|
} |
629 |
|
|
if (edone != NULL) |
630 |
|
|
free((void *)edone); |
631 |
|
|
} |
632 |
|
|
|
633 |
|
|
|
634 |
|
|
void |
635 |
|
|
init_frame() /* render base (low quality) frame */ |
636 |
|
|
{ |
637 |
|
|
int restart; |
638 |
|
|
|
639 |
|
|
/* allocate/swap buffers */ |
640 |
|
|
next_frame(); |
641 |
|
|
/* check rendering status */ |
642 |
|
|
restart = (!nobjects || vdef(MOVE)); |
643 |
|
|
if (!restart && curparams != &lorendparams && nprocs > 1) |
644 |
|
|
restart = -1; |
645 |
schorsch |
3.5 |
if (restart > 0) { |
646 |
greg |
3.1 |
if (nprocs > 1) |
647 |
|
|
ray_pdone(1); |
648 |
|
|
else |
649 |
|
|
ray_done(1); |
650 |
schorsch |
3.5 |
} |
651 |
greg |
3.1 |
/* post low quality parameters */ |
652 |
|
|
if (curparams != &lorendparams) |
653 |
|
|
ray_restore(curparams = &lorendparams); |
654 |
|
|
if (restart > 0) { /* load new octree */ |
655 |
|
|
char *oct = getoctspec(fcur); |
656 |
|
|
if (oct == NULL) { |
657 |
|
|
sprintf(errmsg, "cannot get scene for frame %d", fcur); |
658 |
|
|
error(USER, errmsg); |
659 |
|
|
} |
660 |
|
|
if (!silent) { |
661 |
|
|
printf("\tLoading octree..."); |
662 |
|
|
fflush(stdout); |
663 |
|
|
} |
664 |
|
|
if (nprocs > 1) |
665 |
|
|
ray_pinit(oct, nprocs); |
666 |
|
|
else |
667 |
|
|
ray_init(oct); |
668 |
|
|
} else if (restart < 0) { /* update children */ |
669 |
|
|
if (!silent) { |
670 |
|
|
printf("\tRestarting %d processes...", nprocs); |
671 |
|
|
fflush(stdout); |
672 |
|
|
} |
673 |
|
|
ray_pclose(0); |
674 |
|
|
ray_popen(nprocs); |
675 |
|
|
} |
676 |
|
|
if (restart && !silent) |
677 |
|
|
printf("done\n"); |
678 |
|
|
/* sample frame buffer */ |
679 |
|
|
init_frame_sample(); |
680 |
|
|
/* initialize frame error */ |
681 |
|
|
comp_frame_error(); |
682 |
|
|
return; |
683 |
|
|
{ |
684 |
|
|
float *ebuf = (float *)malloc(sizeof(float)*hres*vres); |
685 |
|
|
char fnm[256]; |
686 |
|
|
register int n; |
687 |
|
|
for (n = hres*vres; n--; ) |
688 |
|
|
ebuf[n] = acctab[abuffer[n]]; |
689 |
|
|
sprintf(fnm, vval(BASENAME), fcur); |
690 |
|
|
strcat(fnm, "_inerr.pic"); |
691 |
|
|
write_map(ebuf, fnm); |
692 |
|
|
free((void *)ebuf); |
693 |
|
|
} |
694 |
|
|
} |
695 |
|
|
|
696 |
|
|
|
697 |
|
|
void |
698 |
|
|
filter_frame() /* interpolation, motion-blur, and exposure */ |
699 |
|
|
{ |
700 |
|
|
double expval = expspec_val(getexp(fcur)); |
701 |
|
|
int x, y; |
702 |
|
|
int neigh[NPINTERP]; |
703 |
|
|
int nc; |
704 |
|
|
COLOR cval; |
705 |
|
|
double w, wsum; |
706 |
|
|
register int n; |
707 |
|
|
|
708 |
|
|
#if 0 |
709 |
|
|
/* XXX TEMPORARY!! */ |
710 |
|
|
conspicuity(); |
711 |
|
|
write_map(cerrmap, "outcmap.pic"); |
712 |
|
|
{ |
713 |
|
|
float *ebuf = (float *)malloc(sizeof(float)*hres*vres); |
714 |
|
|
for (n = hres*vres; n--; ) |
715 |
|
|
ebuf[n] = acctab[abuffer[n]]; |
716 |
|
|
write_map(ebuf, "outerr.pic"); |
717 |
|
|
free((void *)ebuf); |
718 |
|
|
} |
719 |
|
|
#endif |
720 |
|
|
|
721 |
|
|
if (!silent) { |
722 |
|
|
printf("\tFiltering frame\n"); |
723 |
|
|
fflush(stdout); |
724 |
|
|
} |
725 |
|
|
/* normalize samples */ |
726 |
|
|
for (y = vres; y--; ) |
727 |
|
|
for (x = hres; x--; ) { |
728 |
|
|
n = fndx(x, y); |
729 |
|
|
if (sbuffer[n] <= 1) |
730 |
|
|
continue; |
731 |
|
|
w = 1.0/(double)sbuffer[n]; |
732 |
|
|
scalecolor(cbuffer[n], w); |
733 |
|
|
} |
734 |
|
|
/* interpolate samples */ |
735 |
|
|
for (y = vres; y--; ) |
736 |
|
|
for (x = hres; x--; ) { |
737 |
|
|
n = fndx(x, y); |
738 |
|
|
if (sbuffer[n]) |
739 |
|
|
continue; |
740 |
|
|
nc = getclosest(neigh, NPINTERP, x, y); |
741 |
|
|
setcolor(cbuffer[n], 0., 0., 0.); |
742 |
|
|
wsum = 0.; |
743 |
|
|
while (nc-- > 0) { |
744 |
|
|
copycolor(cval, cbuffer[neigh[nc]]); |
745 |
|
|
w = sample_wt((neigh[nc]%hres) - x, |
746 |
|
|
(neigh[nc]/hres) - y); |
747 |
|
|
scalecolor(cval, w); |
748 |
|
|
addcolor(cbuffer[n], cval); |
749 |
|
|
wsum += w; |
750 |
|
|
} |
751 |
|
|
if (wsum > FTINY) { |
752 |
|
|
w = 1.0/wsum; |
753 |
|
|
scalecolor(cbuffer[n], w); |
754 |
|
|
} |
755 |
|
|
} |
756 |
|
|
/* motion blur if requested */ |
757 |
|
|
if (mblur > .02) { |
758 |
|
|
int len; |
759 |
|
|
int xs, ys, xl, yl; |
760 |
|
|
int rise, run; |
761 |
|
|
long rise2, run2; |
762 |
|
|
int n2; |
763 |
|
|
int cnt; |
764 |
|
|
/* sum in motion streaks */ |
765 |
schorsch |
3.4 |
memset(outbuffer, '\0', sizeof(COLOR)*hres*vres); |
766 |
|
|
memset(wbuffer, '\0', sizeof(float)*hres*vres); |
767 |
greg |
3.1 |
for (y = vres; y--; ) |
768 |
|
|
for (x = hres; x--; ) { |
769 |
|
|
n = fndx(x, y); |
770 |
|
|
if (xmbuffer[n] == MO_UNK) { |
771 |
|
|
run = rise = 0; |
772 |
|
|
} else { |
773 |
|
|
run = (int)(mblur*xmbuffer[n]); |
774 |
|
|
rise = (int)(mblur*ymbuffer[n]); |
775 |
|
|
} |
776 |
|
|
if (!(run | rise)) { |
777 |
|
|
addcolor(outbuffer[n], cbuffer[n]); |
778 |
|
|
wbuffer[n] += 1.; |
779 |
|
|
continue; |
780 |
|
|
} |
781 |
|
|
xl = x - run/4; |
782 |
|
|
yl = y - rise/4; |
783 |
|
|
if (run < 0) { xs = -1; run = -run; } |
784 |
|
|
else xs = 1; |
785 |
|
|
if (rise < 0) { ys = -1; rise = -rise; } |
786 |
|
|
else ys = 1; |
787 |
|
|
rise2 = run2 = 0L; |
788 |
|
|
if (rise > run) { |
789 |
|
|
cnt = rise + 1; |
790 |
|
|
w = 1./cnt; |
791 |
|
|
copycolor(cval, cbuffer[n]); |
792 |
|
|
scalecolor(cval, w); |
793 |
|
|
while (cnt) |
794 |
|
|
if (rise2 >= run2) { |
795 |
schorsch |
3.6 |
if ((xl >= 0) & (xl < hres) & |
796 |
|
|
(yl >= 0) & (yl < vres)) { |
797 |
greg |
3.1 |
n2 = fndx(xl, yl); |
798 |
|
|
addcolor(outbuffer[n2], |
799 |
|
|
cval); |
800 |
|
|
wbuffer[n2] += w; |
801 |
|
|
} |
802 |
|
|
yl += ys; |
803 |
|
|
run2 += run; |
804 |
|
|
cnt--; |
805 |
|
|
} else { |
806 |
|
|
xl += xs; |
807 |
|
|
rise2 += rise; |
808 |
|
|
} |
809 |
|
|
} else { |
810 |
|
|
cnt = run + 1; |
811 |
|
|
w = 1./cnt; |
812 |
|
|
copycolor(cval, cbuffer[n]); |
813 |
|
|
scalecolor(cval, w); |
814 |
|
|
while (cnt) |
815 |
|
|
if (run2 >= rise2) { |
816 |
schorsch |
3.6 |
if ((xl >= 0) & (xl < hres) & |
817 |
|
|
(yl >= 0) & (yl < vres)) { |
818 |
greg |
3.1 |
n2 = fndx(xl, yl); |
819 |
|
|
addcolor(outbuffer[n2], |
820 |
|
|
cval); |
821 |
|
|
wbuffer[n2] += w; |
822 |
|
|
} |
823 |
|
|
xl += xs; |
824 |
|
|
rise2 += rise; |
825 |
|
|
cnt--; |
826 |
|
|
} else { |
827 |
|
|
yl += ys; |
828 |
|
|
run2 += run; |
829 |
|
|
} |
830 |
|
|
} |
831 |
|
|
} |
832 |
|
|
/* compute final results */ |
833 |
|
|
for (y = vres; y--; ) |
834 |
|
|
for (x = hres; x--; ) { |
835 |
|
|
n = fndx(x, y); |
836 |
|
|
if (wbuffer[n] <= FTINY) |
837 |
|
|
continue; |
838 |
|
|
w = 1./wbuffer[n]; |
839 |
|
|
scalecolor(outbuffer[n], w); |
840 |
|
|
} |
841 |
|
|
} else |
842 |
|
|
for (n = hres*vres; n--; ) |
843 |
|
|
copycolor(outbuffer[n], cbuffer[n]); |
844 |
|
|
/* |
845 |
|
|
for (n = hres*vres; n--; ) |
846 |
|
|
if (!sbuffer[n]) |
847 |
|
|
setcolor(outbuffer[n], 0., 0., 0.); |
848 |
|
|
*/ |
849 |
|
|
/* adjust exposure */ |
850 |
schorsch |
3.6 |
if ((expval < 0.99) | (expval > 1.01)) |
851 |
greg |
3.1 |
for (n = hres*vres; n--; ) |
852 |
|
|
scalecolor(outbuffer[n], expval); |
853 |
|
|
return; |
854 |
|
|
{ |
855 |
|
|
float *sbuf = (float *)malloc(sizeof(float)*hres*vres); |
856 |
|
|
char fnm[256]; |
857 |
|
|
sprintf(fnm, vval(BASENAME), fcur); |
858 |
|
|
strcat(fnm, "_outsamp.pic"); |
859 |
|
|
for (n = hres*vres; n--; ) |
860 |
|
|
sbuf[n] = (float)sbuffer[n]; |
861 |
|
|
write_map(sbuf, fnm); |
862 |
|
|
free((void *)sbuf); |
863 |
|
|
} |
864 |
|
|
} |
865 |
|
|
|
866 |
|
|
|
867 |
|
|
void |
868 |
|
|
send_frame() /* send frame to destination */ |
869 |
|
|
{ |
870 |
|
|
char pfname[1024]; |
871 |
|
|
double d; |
872 |
|
|
FILE *fp; |
873 |
|
|
int y; |
874 |
|
|
/* open output picture */ |
875 |
|
|
sprintf(pfname, vval(BASENAME), fcur); |
876 |
|
|
strcat(pfname, ".pic"); |
877 |
|
|
fp = fopen(pfname, "w"); |
878 |
|
|
if (fp == NULL) { |
879 |
|
|
sprintf(errmsg, "cannot open output frame \"%s\"", pfname); |
880 |
|
|
error(SYSTEM, errmsg); |
881 |
|
|
} |
882 |
schorsch |
3.3 |
SET_FILE_BINARY(fp); |
883 |
greg |
3.1 |
if (!silent) { |
884 |
|
|
printf("\tWriting to \"%s\"\n", pfname); |
885 |
|
|
fflush(stdout); |
886 |
|
|
} |
887 |
|
|
/* write header */ |
888 |
|
|
newheader("RADIANCE", fp); |
889 |
|
|
printargs(gargc, gargv, fp); |
890 |
|
|
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
891 |
|
|
fprintf(fp, "FRAME=%d\n", fcur); |
892 |
|
|
fputnow(fp); |
893 |
|
|
fputs(VIEWSTR, fp); fprintview(&vw, fp); fputc('\n', fp); |
894 |
|
|
d = expspec_val(getexp(fcur)); |
895 |
schorsch |
3.6 |
if ((d < 0.99) | (d > 1.01)) |
896 |
greg |
3.1 |
fputexpos(d, fp); |
897 |
|
|
d = viewaspect(&vw) * hres / vres; |
898 |
schorsch |
3.6 |
if ((d < 0.99) | (d > 1.01)) |
899 |
greg |
3.1 |
fputaspect(d, fp); |
900 |
|
|
fputformat(COLRFMT, fp); |
901 |
|
|
fputc('\n', fp); /* end header */ |
902 |
|
|
fprtresolu(hres, vres, fp); |
903 |
|
|
if (fflush(fp) == EOF) |
904 |
|
|
goto writerr; |
905 |
|
|
#if (PIXSTANDARD != (YMAJOR|YDECR)) |
906 |
|
|
error(CONSISTENCY, "bad code in send_frame"); |
907 |
|
|
#endif |
908 |
|
|
for (y = vres; y--; ) /* write scanlines */ |
909 |
|
|
if (fwritescan(outbuffer+y*hres, hres, fp) < 0) |
910 |
|
|
goto writerr; |
911 |
|
|
if (fclose(fp) == EOF) |
912 |
|
|
goto writerr; |
913 |
|
|
return; /* all is well */ |
914 |
|
|
writerr: |
915 |
|
|
sprintf(errmsg, "error writing frame \"%s\"", pfname); |
916 |
|
|
error(SYSTEM, errmsg); |
917 |
|
|
} |
918 |
|
|
|
919 |
|
|
|
920 |
|
|
void |
921 |
|
|
free_frame() /* free frame allocation */ |
922 |
|
|
{ |
923 |
|
|
if (cbuffer == NULL) |
924 |
|
|
return; |
925 |
|
|
free((void *)cbuffer); cbuffer = NULL; |
926 |
|
|
free((void *)zbuffer); zbuffer = NULL; |
927 |
|
|
free((void *)obuffer); obuffer = NULL; |
928 |
|
|
free((void *)xmbuffer); xmbuffer = NULL; |
929 |
|
|
free((void *)ymbuffer); ymbuffer = NULL; |
930 |
|
|
free((void *)cprev); cprev = NULL; |
931 |
|
|
free((void *)zprev); zprev = NULL; |
932 |
|
|
free((void *)oprev); oprev = NULL; |
933 |
|
|
cerrmap = NULL; |
934 |
|
|
val2map = NULL; |
935 |
|
|
hres = vres = 0; |
936 |
|
|
vw.type = vwprev.type = 0; |
937 |
|
|
frm_stop = 0; |
938 |
|
|
} |