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/* Copyright (c) 1991 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Routines to do the actual calculation for mkillum |
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*/ |
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u[0] = VERTEX(fa,i)[0] - VERTEX(fa,j)[0]; |
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u[1] = VERTEX(fa,i)[1] - VERTEX(fa,j)[1]; |
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u[2] = VERTEX(fa,i)[2] - VERTEX(fa,j)[2]; |
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if (DOT(u,u) >= fa->area-FTINY) |
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if ((r1 = DOT(u,u)) >= fa->area-FTINY) |
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break; |
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} |
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if (i < fa->nv) { /* got one! -- let's align our axes */ |
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normalize(u); |
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r2 = 1.0/sqrt(r1); |
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u[0] *= r2; u[1] *= r2; u[2] *= r2; |
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fcross(v, fa->norm, u); |
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} else /* oh well, we'll just have to wing it */ |
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mkaxes(u, v, fa->norm); |
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objerror(ob, WARNING, "bad aspect"); |
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rt->nrays = 0; |
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freeface(ob); |
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free((char *)distarr); |
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free((void *)distarr); |
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o_default(ob, il, rt, nm); |
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return; |
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} |
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printobj(il->altmat, ob); |
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/* clean up */ |
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freeface(ob); |
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free((char *)distarr); |
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free((void *)distarr); |
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#undef MAXMISS |
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} |
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nalt = nazi = 1; |
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else { |
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n = 4.*PI * il->sampdens; |
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nalt = sqrt(n/PI) + .5; |
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nazi = PI*nalt + .5; |
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nalt = sqrt(2./PI*n) + .5; |
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nazi = PI/2.*nalt + .5; |
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} |
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n = nalt*nazi; |
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distarr = (float *)calloc(n, 3*sizeof(float)); |
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} else |
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printobj(il->altmat, ob); |
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/* clean up */ |
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free((char *)distarr); |
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free((void *)distarr); |
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} |
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r1 = r3*cos(r2); |
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r2 = r3*sin(r2); |
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for (j = 0; j < 3; j++) |
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org[j] = CO_P0(co)[j] + r1*u[j] + r1*v[j] + |
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org[j] = CO_P0(co)[j] + r1*u[j] + r2*v[j] + |
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.001*co->ad[j]; |
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/* send sample */ |
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printobj(il->altmat, ob); |
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/* clean up */ |
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freecone(ob); |
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free((char *)distarr); |
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free((void *)distarr); |
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} |
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bzero(rt->buf+6*rt->nrays, 6*sizeof(float)); |
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errno = 0; |
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if ( process(rt->pd, (char *)rt->buf, (char *)rt->buf, |
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3*sizeof(float)*rt->nrays, |
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3*sizeof(float)*(rt->nrays+1), |
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6*sizeof(float)*(rt->nrays+1)) < |
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3*sizeof(float)*rt->nrays ) |
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3*sizeof(float)*(rt->nrays+1) ) |
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error(SYSTEM, "error reading from rtrace process"); |
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i = rt->nrays; |
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while (i--) { |