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greg |
2.1 |
#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Generate distant sources corresponding to the given environment map |
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*/ |
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#include "ray.h" |
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#include "random.h" |
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#define NTRUNKBR 4 /* number of branches at trunk */ |
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#define NTRUNKVERT 4 /* number of vertices at trunk */ |
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#define DEF_NSAMPS 262144L /* default # sphere samples */ |
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#define DEF_MAXANG 15. /* maximum source angle (deg.) */ |
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/* Data structure for geodesic samples */ |
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typedef struct tritree { |
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FVECT gdv[3]; /* spherical triangle vertex direc. */ |
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FVECT sd; /* sample direction if leaf */ |
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struct tritree *kid; /* 4 children if branch node */ |
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COLR val; /* sampled color value */ |
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} TRITREE; |
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typedef struct lostlight { |
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struct lostlight *next; /* next in list */ |
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FVECT sd; /* lost source direction */ |
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COLOR intens; /* output times solid angle */ |
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} LOSTLIGHT; |
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char *progname; |
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FVECT scene_cent; /* center of octree cube */ |
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RREAL scene_rad; /* radius to get outside cube from center */ |
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const COLR blkclr = BLKCOLR; |
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#define isleaf(node) ((node)->kid == NULL) |
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/* Compute signum of signed volume for three vectors */ |
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int |
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vol_sign(const FVECT v1, const FVECT v2, const FVECT v3) |
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{ |
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double vol; |
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vol = v1[0]*(v2[1]*v3[2] - v2[2]*v3[1]); |
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vol += v1[1]*(v2[2]*v3[0] - v2[0]*v3[2]); |
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vol += v1[2]*(v2[0]*v3[1] - v2[1]*v3[0]); |
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if (vol > .0) |
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return(1); |
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if (vol < .0) |
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return(-1); |
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return(0); |
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} |
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/* Is the given direction contained within the specified spherical triangle? */ |
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int |
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intriv(FVECT tri[3], const FVECT sdir) |
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{ |
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int sv[3]; |
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sv[0] = vol_sign(sdir, tri[0], tri[1]); |
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sv[1] = vol_sign(sdir, tri[1], tri[2]); |
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sv[2] = vol_sign(sdir, tri[2], tri[0]); |
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if ((sv[0] == sv[1]) & (sv[1] == sv[2])) |
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return(1); |
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return(!sv[0] | !sv[1] | !sv[2]); |
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} |
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/* Find leaf containing the given sample direction */ |
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TRITREE * |
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findleaf(TRITREE *node, const FVECT sdir) |
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{ |
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int i; |
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if (isleaf(node)) |
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return(intriv(node->gdv,sdir) ? node : (TRITREE *)NULL); |
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for (i = 0; i < 4; i++) { |
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TRITREE *chknode = &node->kid[i]; |
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if (intriv(chknode->gdv, sdir)) |
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return(isleaf(chknode) ? chknode : |
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findleaf(chknode, sdir)); |
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} |
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return(NULL); |
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} |
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/* Initialize leaf with random sample inside the given spherical triangle */ |
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void |
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leafsample(TRITREE *leaf) |
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{ |
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RAY myray; |
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RREAL wt[3]; |
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int i, j; |
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/* random point on triangle */ |
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i = random() % 3; |
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wt[i] = frandom(); |
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j = random() & 1; |
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wt[(i+2-j)%3] = 1. - wt[i] - |
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(wt[(i+1+j)%3] = (1.-wt[i])*frandom()); |
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leaf->sd[0] = leaf->sd[1] = leaf->sd[2] = .0; |
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for (i = 0; i < 3; i++) |
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VSUM(leaf->sd, leaf->sd, leaf->gdv[i], wt[i]); |
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normalize(leaf->sd); /* record sample direction */ |
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/* evaluate at inf. */ |
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VSUM(myray.rorg, scene_cent, leaf->sd, scene_rad); |
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VCOPY(myray.rdir, leaf->sd); |
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myray.rmax = 0.; |
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ray_trace(&myray); |
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setcolr(leaf->val, colval(myray.rcol,RED), |
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colval(myray.rcol,GRN), |
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colval(myray.rcol,BLU)); |
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} |
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/* Initialize a branch node contained in the given spherical triangle */ |
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void |
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subdivide(TRITREE *branch, FVECT dv[3]) |
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{ |
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FVECT sdv[3]; |
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int i; |
120 |
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for (i = 0; i < 3; i++) /* copy spherical triangle */ |
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VCOPY(branch->gdv[i], dv[i]); |
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for (i = 0; i < 3; i++) { /* create new vertices */ |
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int j = (i+1)%3; |
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VADD(sdv[i], dv[i], dv[j]); |
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normalize(sdv[i]); |
127 |
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} |
128 |
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/* allocate leaves */ |
129 |
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branch->kid = (TRITREE *)calloc(4, sizeof(TRITREE)); |
130 |
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if (branch->kid == NULL) |
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error(SYSTEM, "out of memory in subdivide()"); |
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/* assign subtriangle directions */ |
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VCOPY(branch->kid[0].gdv[0], dv[0]); |
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VCOPY(branch->kid[0].gdv[1], sdv[0]); |
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VCOPY(branch->kid[0].gdv[2], sdv[2]); |
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VCOPY(branch->kid[1].gdv[0], sdv[0]); |
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VCOPY(branch->kid[1].gdv[1], dv[1]); |
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VCOPY(branch->kid[1].gdv[2], sdv[1]); |
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VCOPY(branch->kid[2].gdv[0], sdv[1]); |
140 |
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VCOPY(branch->kid[2].gdv[1], dv[2]); |
141 |
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VCOPY(branch->kid[2].gdv[2], sdv[2]); |
142 |
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VCOPY(branch->kid[3].gdv[0], sdv[0]); |
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VCOPY(branch->kid[3].gdv[1], sdv[1]); |
144 |
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VCOPY(branch->kid[3].gdv[2], sdv[2]); |
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} |
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/* Recursively subdivide the given node to the specified quadtree depth */ |
148 |
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void |
149 |
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branchsample(TRITREE *node, int depth) |
150 |
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{ |
151 |
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int i; |
152 |
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153 |
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if (depth <= 0) |
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return; |
155 |
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if (isleaf(node)) { /* subdivide leaf node */ |
156 |
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TRITREE branch, *moved_leaf; |
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subdivide(&branch, node->gdv); |
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moved_leaf = findleaf(&branch, node->sd); |
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if (moved_leaf != NULL) { /* bequeath old sample */ |
160 |
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VCOPY(moved_leaf->sd, node->sd); |
161 |
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copycolr(moved_leaf->val, node->val); |
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} |
163 |
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for (i = 0; i < 4; i++) /* compute new samples */ |
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if (&branch.kid[i] != moved_leaf) |
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leafsample(&branch.kid[i]); |
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*node = branch; /* replace leaf with branch */ |
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} |
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for (i = 0; i < 4; i++) /* subdivide children */ |
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branchsample(&node->kid[i], depth-1); |
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} |
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/* Sample sphere using triangular geodesic mesh */ |
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TRITREE * |
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geosample(int nsamps) |
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{ |
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int depth; |
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TRITREE *tree; |
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FVECT trunk[NTRUNKVERT]; |
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int i, j; |
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/* figure out depth */ |
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if ((nsamps -= 4) < 0) |
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error(USER, "minimum number of samples is 4"); |
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nsamps = nsamps*3/NTRUNKBR; /* round up */ |
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for (depth = 0; nsamps > 1; depth++) |
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nsamps >>= 2; |
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/* make base tetrahedron */ |
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tree = (TRITREE *)malloc(sizeof(TRITREE)); |
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if (tree == NULL) goto memerr; |
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trunk[0][0] = trunk[0][1] = 0; trunk[0][2] = 1; |
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trunk[1][0] = 0; |
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trunk[1][2] = cos(2.*asin(sqrt(2./3.))); |
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trunk[1][1] = sqrt(1. - trunk[1][2]*trunk[1][2]); |
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spinvector(trunk[2], trunk[1], trunk[0], 2.*PI/3.); |
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spinvector(trunk[3], trunk[1], trunk[0], 4.*PI/3.); |
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VCOPY(tree->gdv[0], trunk[0]); |
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VCOPY(tree->gdv[1], trunk[0]); |
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VCOPY(tree->gdv[2], trunk[0]); |
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tree->kid = (TRITREE *)calloc(NTRUNKBR, sizeof(TRITREE)); |
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if (tree->kid == NULL) goto memerr; |
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/* grow our tree from trunk */ |
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for (i = 0; i < NTRUNKBR; i++) { |
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for (j = 0; j < 3; j++) /* XXX works for tetra only */ |
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VCOPY(tree->kid[i].gdv[j], trunk[(i+j)%NTRUNKVERT]); |
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leafsample(&tree->kid[i]); |
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branchsample(&tree->kid[i], depth); |
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} |
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return(tree); |
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memerr: |
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error(SYSTEM, "out of memory in geosample()"); |
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} |
211 |
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212 |
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/* Compute leaf exponent histogram */ |
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void |
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get_ehisto(const TRITREE *node, long exphisto[256]) |
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{ |
216 |
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int i; |
217 |
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218 |
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if (isleaf(node)) { |
219 |
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++exphisto[node->val[EXP]]; |
220 |
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return; |
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} |
222 |
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for (i = 0; i < 4; i++) |
223 |
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get_ehisto(&node->kid[i], exphisto); |
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} |
225 |
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226 |
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/* Get reasonable source threshold */ |
227 |
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double |
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get_threshold(const TRITREE *tree) |
229 |
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{ |
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long exphisto[256]; |
231 |
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long samptotal; |
232 |
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int i; |
233 |
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/* compute sample histogram */ |
234 |
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memset((void *)exphisto, 0, sizeof(exphisto)); |
235 |
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for (i = 0; i < NTRUNKBR; i++) |
236 |
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get_ehisto(&tree->kid[i], exphisto); |
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/* use 99th percentile */ |
238 |
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for (i = 0; i < 256; i++) |
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samptotal += exphisto[i]; |
240 |
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samptotal /= 100; |
241 |
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for (i = 256; (--i > 0) & (samptotal > 0); ) |
242 |
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samptotal -= exphisto[i]; |
243 |
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return(ldexp(.75, i-COLXS)); |
244 |
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} |
245 |
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246 |
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/* Find leaf containing the maximum exponent */ |
247 |
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TRITREE * |
248 |
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findemax(TRITREE *node, int *expp) |
249 |
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{ |
250 |
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if (!isleaf(node)) { |
251 |
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TRITREE *maxleaf; |
252 |
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TRITREE *rleaf; |
253 |
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maxleaf = findemax(&node->kid[0], expp); |
254 |
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rleaf = findemax(&node->kid[1], expp); |
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if (rleaf != NULL) maxleaf = rleaf; |
256 |
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rleaf = findemax(&node->kid[2], expp); |
257 |
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if (rleaf != NULL) maxleaf = rleaf; |
258 |
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rleaf = findemax(&node->kid[3], expp); |
259 |
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if (rleaf != NULL) maxleaf = rleaf; |
260 |
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return(maxleaf); |
261 |
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} |
262 |
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if (node->val[EXP] <= *expp) |
263 |
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return(NULL); |
264 |
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*expp = node->val[EXP]; |
265 |
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return(node); |
266 |
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} |
267 |
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268 |
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/* Compute solid angle of spherical triangle (approx.) */ |
269 |
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double |
270 |
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tri_omegav(FVECT v[3]) |
271 |
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{ |
272 |
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FVECT e1, e2, vcross; |
273 |
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274 |
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VSUB(e1, v[1], v[0]); |
275 |
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VSUB(e2, v[2], v[1]); |
276 |
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fcross(vcross, e1, e2); |
277 |
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return(.5*VLEN(vcross)); |
278 |
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} |
279 |
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280 |
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/* Sum intensity times direction for non-zero leaves */ |
281 |
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void |
282 |
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vector_sum(FVECT vsum, TRITREE *node, |
283 |
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const FVECT cent, double mincos, int ethresh) |
284 |
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{ |
285 |
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if (isleaf(node)) { |
286 |
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double intens; |
287 |
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if (node->val[EXP] < ethresh) |
288 |
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return; |
289 |
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if (DOT(node->sd,cent) < mincos) |
290 |
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return; |
291 |
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intens = colrval(node->val,GRN) * tri_omegav(node->gdv); |
292 |
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VSUM(vsum, vsum, node->sd, intens); |
293 |
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return; |
294 |
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} |
295 |
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if (DOT(node->gdv[0],node->gdv[1]) < mincos && |
296 |
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DOT(node->gdv[0],cent) > mincos && |
297 |
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DOT(node->gdv[1],cent) > mincos && |
298 |
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DOT(node->gdv[2],cent) > mincos) |
299 |
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return; |
300 |
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vector_sum(vsum, &node->kid[0], cent, mincos, ethresh); |
301 |
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vector_sum(vsum, &node->kid[1], cent, mincos, ethresh); |
302 |
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vector_sum(vsum, &node->kid[2], cent, mincos, ethresh); |
303 |
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vector_sum(vsum, &node->kid[3], cent, mincos, ethresh); |
304 |
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} |
305 |
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306 |
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/* Claim source contributions within the given solid angle */ |
307 |
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void |
308 |
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claimlight(COLOR intens, TRITREE *node, const FVECT cent, double mincos) |
309 |
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{ |
310 |
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int remaining; |
311 |
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int i; |
312 |
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if (isleaf(node)) { /* claim contribution */ |
313 |
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COLOR contrib; |
314 |
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if (node->val[EXP] <= 0) |
315 |
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return; |
316 |
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if (DOT(node->sd,cent) < mincos) |
317 |
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return; |
318 |
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colr_color(contrib, node->val); |
319 |
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scalecolor(contrib, tri_omegav(node->gdv)); |
320 |
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addcolor(intens, contrib); |
321 |
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copycolr(node->val, blkclr); |
322 |
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return; |
323 |
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} |
324 |
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if (DOT(node->gdv[0],node->gdv[1]) < mincos && |
325 |
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DOT(node->gdv[0],cent) > mincos && |
326 |
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DOT(node->gdv[1],cent) > mincos && |
327 |
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DOT(node->gdv[2],cent) > mincos) |
328 |
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return; |
329 |
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remaining = 0; /* recurse on children */ |
330 |
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for (i = 0; i < 4; i++) { |
331 |
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claimlight(intens, &node->kid[i], cent, mincos); |
332 |
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if (!isleaf(&node->kid[i]) || node->kid[i].val[EXP] != 0) |
333 |
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++remaining; |
334 |
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} |
335 |
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if (remaining) |
336 |
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return; |
337 |
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/* consolidate empties */ |
338 |
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free((void *)node->kid); node->kid = NULL; |
339 |
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copycolr(node->val, blkclr); |
340 |
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VCOPY(node->sd, node->gdv[0]); /* doesn't really matter */ |
341 |
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} |
342 |
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343 |
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/* Add lost light contribution to the given list */ |
344 |
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void |
345 |
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add2lost(LOSTLIGHT **llp, COLOR intens, const FVECT cent) |
346 |
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{ |
347 |
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LOSTLIGHT *newll = (LOSTLIGHT *)malloc(sizeof(LOSTLIGHT)); |
348 |
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349 |
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if (newll == NULL) |
350 |
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return; |
351 |
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copycolor(newll->intens, intens); |
352 |
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VCOPY(newll->sd, cent); |
353 |
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newll->next = *llp; |
354 |
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*llp = newll; |
355 |
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} |
356 |
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357 |
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/* Check lost light list for contributions */ |
358 |
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void |
359 |
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getlost(LOSTLIGHT **llp, COLOR intens, const FVECT cent, double omega) |
360 |
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{ |
361 |
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const double mincos = 1. - omega/(2.*PI); |
362 |
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LOSTLIGHT lhead, *lastp, *thisp; |
363 |
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364 |
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lhead.next = *llp; |
365 |
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lastp = &lhead; |
366 |
|
|
while ((thisp = lastp->next) != NULL) |
367 |
|
|
if (DOT(thisp->sd,cent) >= mincos) { |
368 |
|
|
LOSTLIGHT *mynext = thisp->next; |
369 |
|
|
addcolor(intens, thisp->intens); |
370 |
|
|
free((void *)thisp); |
371 |
|
|
lastp->next = mynext; |
372 |
|
|
} else |
373 |
|
|
lastp = thisp; |
374 |
|
|
*llp = lhead.next; |
375 |
|
|
} |
376 |
|
|
|
377 |
|
|
/* Create & print distant sources */ |
378 |
|
|
void |
379 |
|
|
mksources(TRITREE *samptree, double thresh, double maxang) |
380 |
|
|
{ |
381 |
|
|
const int ethresh = (int)(log(thresh)/log(2.) + (COLXS+.5)); |
382 |
|
|
const double maxomega = 2.*PI*(1. - cos(PI/180./2.*maxang)); |
383 |
|
|
const double minintens = .05*thresh*maxomega; |
384 |
|
|
int nsrcs = 0; |
385 |
|
|
LOSTLIGHT *lostlightlist = NULL; |
386 |
|
|
int emax; |
387 |
|
|
TRITREE *startleaf; |
388 |
|
|
COLOR cval; |
389 |
|
|
double growstep; |
390 |
|
|
FVECT curcent; |
391 |
|
|
double currad; |
392 |
|
|
double curomega; |
393 |
|
|
COLOR curintens; |
394 |
|
|
double thisthresh; |
395 |
|
|
int thisethresh; |
396 |
|
|
int i; |
397 |
|
|
/* |
398 |
|
|
* General algorithm: |
399 |
|
|
* 1) Start with brightest unclaimed pixel |
400 |
|
|
* 2) Grow source toward brightest unclaimed perimeter until: |
401 |
|
|
* a) Source exceeds maximum size, or |
402 |
|
|
* b) Perimeter values all below threshold, or |
403 |
|
|
* c) Source average drops below threshold |
404 |
|
|
* 3) Loop until nothing over threshold |
405 |
|
|
* |
406 |
|
|
* Complexity added to absorb insignificant sources in larger ones. |
407 |
|
|
*/ |
408 |
|
|
if (thresh <= FTINY) |
409 |
|
|
return; |
410 |
|
|
for ( ; ; ) { |
411 |
|
|
emax = ethresh; /* find brightest unclaimed */ |
412 |
|
|
startleaf = NULL; |
413 |
|
|
for (i = 0; i < NTRUNKBR; i++) { |
414 |
|
|
TRITREE *bigger = findemax(&samptree->kid[i], &emax); |
415 |
|
|
if (bigger != NULL) |
416 |
|
|
startleaf = bigger; |
417 |
|
|
} |
418 |
|
|
if (startleaf == NULL) |
419 |
|
|
break; |
420 |
|
|
/* claim it */ |
421 |
|
|
VCOPY(curcent, startleaf->sd); |
422 |
|
|
curomega = tri_omegav(startleaf->gdv); |
423 |
|
|
currad = sqrt(curomega/PI); |
424 |
|
|
growstep = 3.*currad; |
425 |
|
|
colr_color(curintens, startleaf->val); |
426 |
|
|
thisthresh = .15*bright(curintens); |
427 |
|
|
if (thisthresh < thresh) thisthresh = thresh; |
428 |
|
|
thisethresh = (int)(log(thisthresh)/log(2.) + (COLXS+.5)); |
429 |
|
|
scalecolor(curintens, curomega); |
430 |
|
|
copycolr(startleaf->val, blkclr); |
431 |
|
|
do { /* grow source */ |
432 |
|
|
FVECT vsum; |
433 |
|
|
double movedist; |
434 |
|
|
vsum[0] = vsum[1] = vsum[2] = .0; |
435 |
|
|
for (i = 0; i < NTRUNKBR; i++) |
436 |
|
|
vector_sum(vsum, &samptree->kid[i], |
437 |
|
|
curcent, cos(currad+growstep), |
438 |
|
|
thisethresh); |
439 |
|
|
if (normalize(vsum) == .0) |
440 |
|
|
break; |
441 |
|
|
movedist = acos(DOT(vsum,curcent)); |
442 |
|
|
if (movedist > growstep) { |
443 |
|
|
VSUB(vsum, vsum, curcent); |
444 |
|
|
movedist = growstep/VLEN(vsum); |
445 |
|
|
VSUM(curcent, curcent, vsum, movedist); |
446 |
|
|
normalize(curcent); |
447 |
|
|
} else |
448 |
|
|
VCOPY(curcent, vsum); |
449 |
|
|
currad += growstep; |
450 |
|
|
curomega = 2.*PI*(1. - cos(currad)); |
451 |
|
|
for (i = 0; i < NTRUNKBR; i++) |
452 |
|
|
claimlight(curintens, &samptree->kid[i], |
453 |
|
|
curcent, cos(currad)); |
454 |
|
|
} while (curomega < maxomega && |
455 |
|
|
bright(curintens)/curomega > thisthresh); |
456 |
|
|
if (bright(curintens) < minintens) { |
457 |
|
|
add2lost(&lostlightlist, curintens, curcent); |
458 |
|
|
continue; |
459 |
|
|
} |
460 |
|
|
/* absorb lost contributions */ |
461 |
|
|
getlost(&lostlightlist, curintens, curcent, curomega); |
462 |
|
|
++nsrcs; /* output source */ |
463 |
|
|
scalecolor(curintens, 1./curomega); |
464 |
|
|
printf("\nvoid illum IBLout\n"); |
465 |
|
|
printf("0\n0\n3 %f %f %f\n", |
466 |
|
|
colval(curintens,RED), |
467 |
|
|
colval(curintens,GRN), |
468 |
|
|
colval(curintens,BLU)); |
469 |
|
|
printf("\nIBLout source IBLsrc%d\n", nsrcs); |
470 |
|
|
printf("0\n0\n4 %f %f %f %f\n", |
471 |
|
|
curcent[0], curcent[1], curcent[2], |
472 |
|
|
2.*180./PI*currad); |
473 |
|
|
} |
474 |
|
|
} |
475 |
|
|
|
476 |
|
|
int |
477 |
|
|
main(int argc, char *argv[]) |
478 |
|
|
{ |
479 |
|
|
long nsamps = DEF_NSAMPS; |
480 |
|
|
double maxang = DEF_MAXANG; |
481 |
|
|
TRITREE *samptree; |
482 |
|
|
double thresh = 0; |
483 |
|
|
int i; |
484 |
|
|
|
485 |
|
|
progname = argv[0]; |
486 |
|
|
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
487 |
|
|
switch (argv[i][1]) { |
488 |
|
|
case 'd': /* number of samples */ |
489 |
|
|
if (i >= argc-1) goto userr; |
490 |
|
|
nsamps = atol(argv[++i]); |
491 |
|
|
break; |
492 |
|
|
case 't': /* manual threshold */ |
493 |
|
|
if (i >= argc-1) goto userr; |
494 |
|
|
thresh = atof(argv[++i]); |
495 |
|
|
break; |
496 |
|
|
case 'a': /* maximum source angle */ |
497 |
|
|
if (i >= argc-1) goto userr; |
498 |
|
|
maxang = atof(argv[++i]); |
499 |
|
|
if (maxang <= FTINY) |
500 |
|
|
goto userr; |
501 |
|
|
if (maxang > 180.) |
502 |
|
|
maxang = 180.; |
503 |
|
|
break; |
504 |
|
|
default: |
505 |
|
|
goto userr; |
506 |
|
|
} |
507 |
|
|
if (i < argc-1) |
508 |
|
|
goto userr; |
509 |
|
|
/* start our ray calculation */ |
510 |
|
|
directvis = 0; |
511 |
|
|
ray_init(i == argc-1 ? argv[i] : (char *)NULL); |
512 |
|
|
VCOPY(scene_cent, thescene.cuorg); |
513 |
|
|
scene_cent[0] += 0.5*thescene.cusize; |
514 |
|
|
scene_cent[1] += 0.5*thescene.cusize; |
515 |
|
|
scene_cent[2] += 0.5*thescene.cusize; |
516 |
|
|
scene_rad = 0.86603*thescene.cusize; |
517 |
|
|
/* sample geodesic mesh */ |
518 |
|
|
samptree = geosample(nsamps); |
519 |
|
|
/* get source threshold */ |
520 |
|
|
if (thresh <= FTINY) |
521 |
|
|
thresh = get_threshold(samptree); |
522 |
|
|
/* done with ray samples */ |
523 |
|
|
ray_done(1); |
524 |
|
|
/* print header */ |
525 |
|
|
printf("# "); |
526 |
|
|
printargs(argc, argv, stdout); |
527 |
|
|
/* create & print sources */ |
528 |
|
|
mksources(samptree, thresh, maxang); |
529 |
|
|
/* all done, no need to clean up */ |
530 |
|
|
return(0); |
531 |
|
|
userr: |
532 |
|
|
fprintf(stderr, "Usage: %s [-d nsamps][-t thresh][-a maxang] [octree]\n", |
533 |
|
|
argv[0]); |
534 |
|
|
exit(1); |
535 |
|
|
} |
536 |
|
|
|
537 |
|
|
void |
538 |
|
|
eputs(char *s) |
539 |
|
|
{ |
540 |
|
|
static int midline = 0; |
541 |
|
|
|
542 |
|
|
if (!*s) |
543 |
|
|
return; |
544 |
|
|
if (!midline++) { |
545 |
|
|
fputs(progname, stderr); |
546 |
|
|
fputs(": ", stderr); |
547 |
|
|
} |
548 |
|
|
fputs(s, stderr); |
549 |
|
|
if (s[strlen(s)-1] == '\n') { |
550 |
|
|
fflush(stderr); |
551 |
|
|
midline = 0; |
552 |
|
|
} |
553 |
|
|
} |
554 |
|
|
|
555 |
|
|
void |
556 |
|
|
wputs(char *s) |
557 |
|
|
{ |
558 |
|
|
/* no warnings */ |
559 |
|
|
} |