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#include "standard.h" |
20 |
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21 |
< |
#define XNAME "X_" /* x function name */ |
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< |
#define YNAME "Y_" /* y function name */ |
23 |
< |
#define ZNAME "Z_" /* z function name */ |
21 |
> |
char XNAME[] = "X`SYS`"; /* x function name */ |
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> |
char YNAME[] = "Y`SYS`"; /* y function name */ |
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> |
char ZNAME[] = "Z`SYS`"; /* z function name */ |
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#define ABS(x) ((x)>=0 ? (x) : -(x)) |
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34 |
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35 |
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char *modname, *surfname; |
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|
37 |
< |
double funvalue(), l_hermite(), l_bezier(), l_bspline(), argument(); |
37 |
> |
/* recorded data flags */ |
38 |
> |
#define HASBORDER 01 |
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> |
#define TRIPLETS 02 |
40 |
> |
/* a data structure */ |
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> |
struct { |
42 |
> |
int flags; /* data type */ |
43 |
> |
short m, n; /* number of s and t values */ |
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> |
FLOAT *data; /* the data itself, s major sort */ |
45 |
> |
} datarec; /* our recorded data */ |
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|
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double l_hermite(), l_bezier(), l_bspline(), l_dataval(); |
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extern double funvalue(), argument(); |
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|
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typedef struct { |
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FVECT p; /* vertex position */ |
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FVECT n; /* average normal */ |
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int argc; |
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char *argv[]; |
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{ |
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extern long eclock; |
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POINT *row0, *row1, *row2, *rp; |
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int i, j, m, n; |
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char stmp[256]; |
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varset("PI", PI); |
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< |
funset("hermite", 5, l_hermite); |
67 |
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funset("bezier", 5, l_bezier); |
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funset("bspline", 5, l_bspline); |
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varset("PI", ':', PI); |
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funset("hermite", 5, ':', l_hermite); |
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funset("bezier", 5, ':', l_bezier); |
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funset("bspline", 5, ':', l_bspline); |
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if (argc < 8) |
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goto userror; |
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for (i = 8; i < argc; i++) |
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if (!strcmp(argv[i], "-e")) |
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scompile(NULL, argv[++i]); |
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scompile(argv[++i], NULL, 0); |
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else if (!strcmp(argv[i], "-f")) |
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fcompile(argv[++i]); |
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else if (!strcmp(argv[i], "-s")) |
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modname = argv[1]; |
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surfname = argv[2]; |
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sprintf(stmp, "%s(s,t)=%s;", XNAME, argv[3]); |
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scompile(NULL, stmp); |
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sprintf(stmp, "%s(s,t)=%s;", YNAME, argv[4]); |
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scompile(NULL, stmp); |
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sprintf(stmp, "%s(s,t)=%s;", ZNAME, argv[5]); |
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scompile(NULL, stmp); |
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m = atoi(argv[6]); |
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n = atoi(argv[7]); |
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if (m <= 0 || n <= 0) |
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goto userror; |
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|
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if (!strcmp(argv[5], "-") || access(argv[5], 4) == 0) { /* file? */ |
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funset(ZNAME, 2, ':', l_dataval); |
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if (!strcmp(argv[5],argv[3]) && !strcmp(argv[5],argv[4])) { |
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loaddata(argv[5], m, n, 3); |
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funset(XNAME, 2, ':', l_dataval); |
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funset(YNAME, 2, ':', l_dataval); |
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} else { |
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loaddata(argv[5], m, n, 1); |
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sprintf(stmp, "%s(s,t)=%s;", XNAME, argv[3]); |
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scompile(stmp, NULL, 0); |
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sprintf(stmp, "%s(s,t)=%s;", YNAME, argv[4]); |
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scompile(stmp, NULL, 0); |
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} |
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} else { |
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sprintf(stmp, "%s(s,t)=%s;", XNAME, argv[3]); |
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scompile(stmp, NULL, 0); |
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sprintf(stmp, "%s(s,t)=%s;", YNAME, argv[4]); |
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scompile(stmp, NULL, 0); |
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sprintf(stmp, "%s(s,t)=%s;", ZNAME, argv[5]); |
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scompile(stmp, NULL, 0); |
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} |
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row0 = (POINT *)malloc((n+3)*sizeof(POINT)); |
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row1 = (POINT *)malloc((n+3)*sizeof(POINT)); |
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row2 = (POINT *)malloc((n+3)*sizeof(POINT)); |
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row0++; row1++; row2++; |
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/* print header */ |
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printhead(argc, argv); |
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eclock = 0; |
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/* initialize */ |
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comprow(-1.0/m, row0, n); |
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comprow(0.0, row1, n); |
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} |
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loaddata(file, m, n, pointsize) /* load point data from file */ |
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char *file; |
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int m, n; |
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int pointsize; |
160 |
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{ |
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extern char *fgetword(); |
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FILE *fp; |
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char word[64]; |
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register int size; |
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register FLOAT *dp; |
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|
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datarec.flags = HASBORDER; /* assume border values */ |
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size = (m+1)*(n+1)*pointsize; |
169 |
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if (pointsize == 3) |
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datarec.flags |= TRIPLETS; |
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dp = (FLOAT *)malloc(size*sizeof(FLOAT)); |
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if ((datarec.data = dp) == NULL) { |
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fputs("Out of memory\n", stderr); |
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exit(1); |
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} |
176 |
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if (!strcmp(file, "-")) { |
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file = "<stdin>"; |
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fp = stdin; |
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} else if ((fp = fopen(file, "r")) == NULL) { |
180 |
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fputs(file, stderr); |
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fputs(": cannot open\n", stderr); |
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exit(1); |
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} |
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while (size > 0 && fgetword(word, sizeof(word), fp) != NULL) { |
185 |
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if (!isflt(word)) { |
186 |
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fprintf(stderr, "%s: garbled data value: %s\n", |
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file, word); |
188 |
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exit(1); |
189 |
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} |
190 |
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*dp++ = atof(word); |
191 |
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size--; |
192 |
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} |
193 |
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if (size == (m+n+1)*pointsize) { /* no border after all */ |
194 |
+ |
dp = (FLOAT *)realloc((char *)datarec.data, |
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m*n*pointsize*sizeof(FLOAT)); |
196 |
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if (dp != NULL) |
197 |
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datarec.data = dp; |
198 |
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datarec.flags &= ~HASBORDER; |
199 |
+ |
size = 0; |
200 |
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} |
201 |
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if (size || fgetword(word, sizeof(word), fp) != NULL) { |
202 |
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fputs(file, stderr); |
203 |
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fputs(": bad number of data points\n", stderr); |
204 |
+ |
exit(1); |
205 |
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} |
206 |
+ |
fclose(fp); |
207 |
+ |
} |
208 |
+ |
|
209 |
+ |
|
210 |
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double |
211 |
+ |
l_dataval(nam) /* return recorded data value */ |
212 |
+ |
char *nam; |
213 |
+ |
{ |
214 |
+ |
double u, v; |
215 |
+ |
register int i, j; |
216 |
+ |
register FLOAT *dp; |
217 |
+ |
double d00, d01, d10, d11; |
218 |
+ |
/* compute coordinates */ |
219 |
+ |
u = argument(1); v = argument(2); |
220 |
+ |
if (datarec.flags & HASBORDER) { |
221 |
+ |
i = u *= datarec.m; |
222 |
+ |
j = v *= datarec.n; |
223 |
+ |
} else { |
224 |
+ |
i = u = u*(datarec.m+1) - .5; |
225 |
+ |
j = v = v*(datarec.n+1) - .5; |
226 |
+ |
} |
227 |
+ |
if (i < 0) i = 0; |
228 |
+ |
else if (i > datarec.m-2) i = datarec.m-2; |
229 |
+ |
if (j < 0) j = 0; |
230 |
+ |
else if (j > datarec.n-2) j = datarec.n-2; |
231 |
+ |
/* compute value */ |
232 |
+ |
if (datarec.flags & TRIPLETS) { |
233 |
+ |
dp = datarec.data + 3*(j*datarec.n + i); |
234 |
+ |
if (nam == YNAME) |
235 |
+ |
dp++; |
236 |
+ |
else if (nam == ZNAME) |
237 |
+ |
dp += 2; |
238 |
+ |
d00 = dp[0]; d01 = dp[3]; |
239 |
+ |
dp += 3*datarec.n; |
240 |
+ |
d10 = dp[0]; d11 = dp[3]; |
241 |
+ |
} else { |
242 |
+ |
dp = datarec.data + j*datarec.n + i; |
243 |
+ |
d00 = dp[0]; d01 = dp[1]; |
244 |
+ |
dp += datarec.n; |
245 |
+ |
d10 = dp[0]; d11 = dp[1]; |
246 |
+ |
} |
247 |
+ |
/* bilinear interpolation */ |
248 |
+ |
return((j+1-v)*((i+1-u)*d00+(u-i)*d01)+(v-j)*((i+1-u)*d10+(u-i)*d11)); |
249 |
+ |
} |
250 |
+ |
|
251 |
+ |
|
252 |
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putsquare(p0, p1, p2, p3) /* put out a square */ |
253 |
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POINT *p0, *p1, *p2, *p3; |
254 |
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{ |
369 |
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register POINT *r0, *r1, *r2; |
370 |
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int siz; |
371 |
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{ |
372 |
< |
FVECT v1, v2, vc; |
372 |
> |
FVECT v1, v2; |
373 |
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register int i; |
374 |
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|
375 |
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if (!smooth) /* not needed if no smoothing */ |
376 |
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return; |
377 |
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/* compute middle points */ |
378 |
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while (siz-- >= 0) { |
379 |
< |
fvsum(v1, r2[0].p, r1[0].p, -1.0); |
380 |
< |
fvsum(v2, r1[1].p, r1[0].p, -1.0); |
379 |
> |
fvsum(v1, r2[0].p, r0[0].p, -1.0); |
380 |
> |
fvsum(v2, r1[1].p, r1[-1].p, -1.0); |
381 |
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fcross(r1[0].n, v1, v2); |
259 |
– |
fvsum(v1, r0[0].p, r1[0].p, -1.0); |
260 |
– |
fcross(vc, v2, v1); |
261 |
– |
fvsum(r1[0].n, r1[0].n, vc, 1.0); |
262 |
– |
fvsum(v2, r1[-1].p, r1[0].p, -1.0); |
263 |
– |
fcross(vc, v1, v2); |
264 |
– |
fvsum(r1[0].n, r1[0].n, vc, 1.0); |
265 |
– |
fvsum(v1, r2[0].p, r1[0].p, -1.0); |
266 |
– |
fcross(vc, v2, v1); |
267 |
– |
fvsum(r1[0].n, r1[0].n, vc, 1.0); |
382 |
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normalize(r1[0].n); |
383 |
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r0++; r1++; r2++; |
384 |
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} |
394 |
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#define v ((ax+2)%3) |
395 |
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|
396 |
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register int ax; |
397 |
< |
double eqnmat[4][4]; |
397 |
> |
MAT4 eqnmat; |
398 |
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FVECT v1; |
399 |
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register int i, j; |
400 |
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448 |
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*/ |
449 |
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450 |
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invmat(inverse,mat) |
451 |
< |
double mat[4][4],inverse[4][4]; |
451 |
> |
MAT4 inverse, mat; |
452 |
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{ |
453 |
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#define SWAP(a,b,t) (t=a,a=b,b=t) |
454 |
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|
455 |
< |
double m4tmp[4][4]; |
455 |
> |
MAT4 m4tmp; |
456 |
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register int i,j,k; |
457 |
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register double temp; |
458 |
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|
459 |
< |
bcopy((char *)mat, (char *)m4tmp, sizeof(m4tmp)); |
459 |
> |
copymat4(m4tmp, mat); |
460 |
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/* set inverse to identity */ |
461 |
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for (i = 0; i < 4; i++) |
462 |
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for (j = 0; j < 4; j++) |
463 |
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inverse[i][j] = i==j ? 1.0 : 0.0; |
464 |
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|
465 |
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for(i = 0; i < 4; i++) { |
466 |
< |
/* Look for raw with largest pivot and swap raws */ |
466 |
> |
/* Look for row with largest pivot and swap rows */ |
467 |
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temp = FTINY; j = -1; |
468 |
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for(k = i; k < 4; k++) |
469 |
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if(ABS(m4tmp[k][i]) > temp) { |
470 |
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temp = ABS(m4tmp[k][i]); |
471 |
|
j = k; |
472 |
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} |
473 |
< |
if(j == -1) /* No replacing raw -> no inverse */ |
473 |
> |
if(j == -1) /* No replacing row -> no inverse */ |
474 |
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return(0); |
475 |
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if (j != i) |
476 |
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for(k = 0; k < 4; k++) { |