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-rwxr-xr-xcode/bspc/faces.c1956
1 files changed, 978 insertions, 978 deletions
diff --git a/code/bspc/faces.c b/code/bspc/faces.c
index bcd3ef9..f05f5ae 100755
--- a/code/bspc/faces.c
+++ b/code/bspc/faces.c
@@ -1,978 +1,978 @@
-/*
-===========================================================================
-Copyright (C) 1999-2005 Id Software, Inc.
-
-This file is part of Quake III Arena source code.
-
-Quake III Arena source code is free software; you can redistribute it
-and/or modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of the License,
-or (at your option) any later version.
-
-Quake III Arena source code is distributed in the hope that it will be
-useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with Foobar; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-===========================================================================
-*/
-// faces.c
-
-#include "qbsp.h"
-#include "l_mem.h"
-
-/*
-
- some faces will be removed before saving, but still form nodes:
-
- the insides of sky volumes
- meeting planes of different water current volumes
-
-*/
-
-// undefine for dumb linear searches
-#define USE_HASHING
-
-#define INTEGRAL_EPSILON 0.01
-#define POINT_EPSILON 0.5
-#define OFF_EPSILON 0.5
-
-int c_merge;
-int c_subdivide;
-
-int c_totalverts;
-int c_uniqueverts;
-int c_degenerate;
-int c_tjunctions;
-int c_faceoverflows;
-int c_facecollapse;
-int c_badstartverts;
-
-#define MAX_SUPERVERTS 512
-int superverts[MAX_SUPERVERTS];
-int numsuperverts;
-
-face_t *edgefaces[MAX_MAP_EDGES][2];
-int firstmodeledge = 1;
-int firstmodelface;
-
-int c_tryedges;
-
-vec3_t edge_dir;
-vec3_t edge_start;
-vec_t edge_len;
-
-int num_edge_verts;
-int edge_verts[MAX_MAP_VERTS];
-
-face_t *NewFaceFromFace (face_t *f);
-
-//===========================================================================
-
-typedef struct hashvert_s
-{
- struct hashvert_s *next;
- int num;
-} hashvert_t;
-
-
-#define HASH_SIZE 64
-
-
-int vertexchain[MAX_MAP_VERTS]; // the next vertex in a hash chain
-int hashverts[HASH_SIZE*HASH_SIZE]; // a vertex number, or 0 for no verts
-
-face_t *edgefaces[MAX_MAP_EDGES][2];
-
-//============================================================================
-
-
-unsigned HashVec (vec3_t vec)
-{
- int x, y;
-
- x = (4096 + (int)(vec[0]+0.5)) >> 7;
- y = (4096 + (int)(vec[1]+0.5)) >> 7;
-
- if ( x < 0 || x >= HASH_SIZE || y < 0 || y >= HASH_SIZE )
- Error ("HashVec: point outside valid range");
-
- return y*HASH_SIZE + x;
-}
-
-#ifdef USE_HASHING
-/*
-=============
-GetVertex
-
-Uses hashing
-=============
-*/
-int GetVertexnum (vec3_t in)
-{
- int h;
- int i;
- float *p;
- vec3_t vert;
- int vnum;
-
- c_totalverts++;
-
- for (i=0 ; i<3 ; i++)
- {
- if ( fabs(in[i] - Q_rint(in[i])) < INTEGRAL_EPSILON)
- vert[i] = Q_rint(in[i]);
- else
- vert[i] = in[i];
- }
-
- h = HashVec (vert);
-
- for (vnum=hashverts[h] ; vnum ; vnum=vertexchain[vnum])
- {
- p = dvertexes[vnum].point;
- if ( fabs(p[0]-vert[0])<POINT_EPSILON
- && fabs(p[1]-vert[1])<POINT_EPSILON
- && fabs(p[2]-vert[2])<POINT_EPSILON )
- return vnum;
- }
-
-// emit a vertex
- if (numvertexes == MAX_MAP_VERTS)
- Error ("numvertexes == MAX_MAP_VERTS");
-
- dvertexes[numvertexes].point[0] = vert[0];
- dvertexes[numvertexes].point[1] = vert[1];
- dvertexes[numvertexes].point[2] = vert[2];
-
- vertexchain[numvertexes] = hashverts[h];
- hashverts[h] = numvertexes;
-
- c_uniqueverts++;
-
- numvertexes++;
-
- return numvertexes-1;
-}
-#else
-/*
-==================
-GetVertexnum
-
-Dumb linear search
-==================
-*/
-int GetVertexnum (vec3_t v)
-{
- int i, j;
- dvertex_t *dv;
- vec_t d;
-
- c_totalverts++;
-
- // make really close values exactly integral
- for (i=0 ; i<3 ; i++)
- {
- if ( fabs(v[i] - (int)(v[i]+0.5)) < INTEGRAL_EPSILON )
- v[i] = (int)(v[i]+0.5);
- if (v[i] < -4096 || v[i] > 4096)
- Error ("GetVertexnum: outside +/- 4096");
- }
-
- // search for an existing vertex match
- for (i=0, dv=dvertexes ; i<numvertexes ; i++, dv++)
- {
- for (j=0 ; j<3 ; j++)
- {
- d = v[j] - dv->point[j];
- if ( d > POINT_EPSILON || d < -POINT_EPSILON)
- break;
- }
- if (j == 3)
- return i; // a match
- }
-
- // new point
- if (numvertexes == MAX_MAP_VERTS)
- Error ("MAX_MAP_VERTS");
- VectorCopy (v, dv->point);
- numvertexes++;
- c_uniqueverts++;
-
- return numvertexes-1;
-}
-#endif
-
-
-/*
-==================
-FaceFromSuperverts
-
-The faces vertexes have been added to the superverts[] array,
-and there may be more there than can be held in a face (MAXEDGES).
-
-If less, the faces vertexnums[] will be filled in, otherwise
-face will reference a tree of split[] faces until all of the
-vertexnums can be added.
-
-superverts[base] will become face->vertexnums[0], and the others
-will be circularly filled in.
-==================
-*/
-void FaceFromSuperverts (node_t *node, face_t *f, int base)
-{
- face_t *newf;
- int remaining;
- int i;
-
- remaining = numsuperverts;
- while (remaining > MAXEDGES)
- { // must split into two faces, because of vertex overload
- c_faceoverflows++;
-
- newf = f->split[0] = NewFaceFromFace (f);
- newf = f->split[0];
- newf->next = node->faces;
- node->faces = newf;
-
- newf->numpoints = MAXEDGES;
- for (i=0 ; i<MAXEDGES ; i++)
- newf->vertexnums[i] = superverts[(i+base)%numsuperverts];
-
- f->split[1] = NewFaceFromFace (f);
- f = f->split[1];
- f->next = node->faces;
- node->faces = f;
-
- remaining -= (MAXEDGES-2);
- base = (base+MAXEDGES-1)%numsuperverts;
- }
-
- // copy the vertexes back to the face
- f->numpoints = remaining;
- for (i=0 ; i<remaining ; i++)
- f->vertexnums[i] = superverts[(i+base)%numsuperverts];
-}
-
-
-/*
-==================
-EmitFaceVertexes
-==================
-*/
-void EmitFaceVertexes (node_t *node, face_t *f)
-{
- winding_t *w;
- int i;
-
- if (f->merged || f->split[0] || f->split[1])
- return;
-
- w = f->w;
- for (i=0 ; i<w->numpoints ; i++)
- {
- if (noweld)
- { // make every point unique
- if (numvertexes == MAX_MAP_VERTS)
- Error ("MAX_MAP_VERTS");
- superverts[i] = numvertexes;
- VectorCopy (w->p[i], dvertexes[numvertexes].point);
- numvertexes++;
- c_uniqueverts++;
- c_totalverts++;
- }
- else
- superverts[i] = GetVertexnum (w->p[i]);
- }
- numsuperverts = w->numpoints;
-
- // this may fragment the face if > MAXEDGES
- FaceFromSuperverts (node, f, 0);
-}
-
-/*
-==================
-EmitVertexes_r
-==================
-*/
-void EmitVertexes_r (node_t *node)
-{
- int i;
- face_t *f;
-
- if (node->planenum == PLANENUM_LEAF)
- return;
-
- for (f=node->faces ; f ; f=f->next)
- {
- EmitFaceVertexes (node, f);
- }
-
- for (i=0 ; i<2 ; i++)
- EmitVertexes_r (node->children[i]);
-}
-
-
-#ifdef USE_HASHING
-/*
-==========
-FindEdgeVerts
-
-Uses the hash tables to cut down to a small number
-==========
-*/
-void FindEdgeVerts (vec3_t v1, vec3_t v2)
-{
- int x1, x2, y1, y2, t;
- int x, y;
- int vnum;
-
-#if 0
-{
- int i;
- num_edge_verts = numvertexes-1;
- for (i=0 ; i<numvertexes-1 ; i++)
- edge_verts[i] = i+1;
-}
-#endif
-
- x1 = (4096 + (int)(v1[0]+0.5)) >> 7;
- y1 = (4096 + (int)(v1[1]+0.5)) >> 7;
- x2 = (4096 + (int)(v2[0]+0.5)) >> 7;
- y2 = (4096 + (int)(v2[1]+0.5)) >> 7;
-
- if (x1 > x2)
- {
- t = x1;
- x1 = x2;
- x2 = t;
- }
- if (y1 > y2)
- {
- t = y1;
- y1 = y2;
- y2 = t;
- }
-#if 0
- x1--;
- x2++;
- y1--;
- y2++;
- if (x1 < 0)
- x1 = 0;
- if (x2 >= HASH_SIZE)
- x2 = HASH_SIZE;
- if (y1 < 0)
- y1 = 0;
- if (y2 >= HASH_SIZE)
- y2 = HASH_SIZE;
-#endif
- num_edge_verts = 0;
- for (x=x1 ; x <= x2 ; x++)
- {
- for (y=y1 ; y <= y2 ; y++)
- {
- for (vnum=hashverts[y*HASH_SIZE+x] ; vnum ; vnum=vertexchain[vnum])
- {
- edge_verts[num_edge_verts++] = vnum;
- }
- }
- }
-}
-
-#else
-/*
-==========
-FindEdgeVerts
-
-Forced a dumb check of everything
-==========
-*/
-void FindEdgeVerts (vec3_t v1, vec3_t v2)
-{
- int i;
-
- num_edge_verts = numvertexes-1;
- for (i=0 ; i<num_edge_verts ; i++)
- edge_verts[i] = i+1;
-}
-#endif
-
-/*
-==========
-TestEdge
-
-Can be recursively reentered
-==========
-*/
-void TestEdge (vec_t start, vec_t end, int p1, int p2, int startvert)
-{
- int j, k;
- vec_t dist;
- vec3_t delta;
- vec3_t exact;
- vec3_t off;
- vec_t error;
- vec3_t p;
-
- if (p1 == p2)
- {
- c_degenerate++;
- return; // degenerate edge
- }
-
- for (k=startvert ; k<num_edge_verts ; k++)
- {
- j = edge_verts[k];
- if (j==p1 || j == p2)
- continue;
-
- VectorCopy (dvertexes[j].point, p);
-
- VectorSubtract (p, edge_start, delta);
- dist = DotProduct (delta, edge_dir);
- if (dist <=start || dist >= end)
- continue; // off an end
- VectorMA (edge_start, dist, edge_dir, exact);
- VectorSubtract (p, exact, off);
- error = VectorLength (off);
-
- if (fabs(error) > OFF_EPSILON)
- continue; // not on the edge
-
- // break the edge
- c_tjunctions++;
- TestEdge (start, dist, p1, j, k+1);
- TestEdge (dist, end, j, p2, k+1);
- return;
- }
-
- // the edge p1 to p2 is now free of tjunctions
- if (numsuperverts >= MAX_SUPERVERTS)
- Error ("MAX_SUPERVERTS");
- superverts[numsuperverts] = p1;
- numsuperverts++;
-}
-
-/*
-==================
-FixFaceEdges
-
-==================
-*/
-void FixFaceEdges (node_t *node, face_t *f)
-{
- int p1, p2;
- int i;
- vec3_t e2;
- vec_t len;
- int count[MAX_SUPERVERTS], start[MAX_SUPERVERTS];
- int base;
-
- if (f->merged || f->split[0] || f->split[1])
- return;
-
- numsuperverts = 0;
-
- for (i=0 ; i<f->numpoints ; i++)
- {
- p1 = f->vertexnums[i];
- p2 = f->vertexnums[(i+1)%f->numpoints];
-
- VectorCopy (dvertexes[p1].point, edge_start);
- VectorCopy (dvertexes[p2].point, e2);
-
- FindEdgeVerts (edge_start, e2);
-
- VectorSubtract (e2, edge_start, edge_dir);
- len = VectorNormalize(edge_dir);
-
- start[i] = numsuperverts;
- TestEdge (0, len, p1, p2, 0);
-
- count[i] = numsuperverts - start[i];
- }
-
- if (numsuperverts < 3)
- { // entire face collapsed
- f->numpoints = 0;
- c_facecollapse++;
- return;
- }
-
- // we want to pick a vertex that doesn't have tjunctions
- // on either side, which can cause artifacts on trifans,
- // especially underwater
- for (i=0 ; i<f->numpoints ; i++)
- {
- if (count[i] == 1 && count[(i+f->numpoints-1)%f->numpoints] == 1)
- break;
- }
- if (i == f->numpoints)
- {
- f->badstartvert = true;
- c_badstartverts++;
- base = 0;
- }
- else
- { // rotate the vertex order
- base = start[i];
- }
-
- // this may fragment the face if > MAXEDGES
- FaceFromSuperverts (node, f, base);
-}
-
-/*
-==================
-FixEdges_r
-==================
-*/
-void FixEdges_r (node_t *node)
-{
- int i;
- face_t *f;
-
- if (node->planenum == PLANENUM_LEAF)
- return;
-
- for (f=node->faces ; f ; f=f->next)
- FixFaceEdges (node, f);
-
- for (i=0 ; i<2 ; i++)
- FixEdges_r (node->children[i]);
-}
-
-/*
-===========
-FixTjuncs
-
-===========
-*/
-void FixTjuncs (node_t *headnode)
-{
- // snap and merge all vertexes
- qprintf ("---- snap verts ----\n");
- memset (hashverts, 0, sizeof(hashverts));
- c_totalverts = 0;
- c_uniqueverts = 0;
- c_faceoverflows = 0;
- EmitVertexes_r (headnode);
- qprintf ("%i unique from %i\n", c_uniqueverts, c_totalverts);
-
- // break edges on tjunctions
- qprintf ("---- tjunc ----\n");
- c_tryedges = 0;
- c_degenerate = 0;
- c_facecollapse = 0;
- c_tjunctions = 0;
- if (!notjunc)
- FixEdges_r (headnode);
- qprintf ("%5i edges degenerated\n", c_degenerate);
- qprintf ("%5i faces degenerated\n", c_facecollapse);
- qprintf ("%5i edges added by tjunctions\n", c_tjunctions);
- qprintf ("%5i faces added by tjunctions\n", c_faceoverflows);
- qprintf ("%5i bad start verts\n", c_badstartverts);
-}
-
-
-//========================================================
-
-int c_faces;
-
-face_t *AllocFace (void)
-{
- face_t *f;
-
- f = GetMemory(sizeof(*f));
- memset (f, 0, sizeof(*f));
- c_faces++;
-
- return f;
-}
-
-face_t *NewFaceFromFace (face_t *f)
-{
- face_t *newf;
-
- newf = AllocFace ();
- *newf = *f;
- newf->merged = NULL;
- newf->split[0] = newf->split[1] = NULL;
- newf->w = NULL;
- return newf;
-}
-
-void FreeFace (face_t *f)
-{
- if (f->w)
- FreeWinding (f->w);
- FreeMemory(f);
- c_faces--;
-}
-
-//========================================================
-
-/*
-==================
-GetEdge
-
-Called by writebsp.
-Don't allow four way edges
-==================
-*/
-int GetEdge2 (int v1, int v2, face_t *f)
-{
- dedge_t *edge;
- int i;
-
- c_tryedges++;
-
- if (!noshare)
- {
- for (i=firstmodeledge ; i < numedges ; i++)
- {
- edge = &dedges[i];
- if (v1 == edge->v[1] && v2 == edge->v[0]
- && edgefaces[i][0]->contents == f->contents)
- {
- if (edgefaces[i][1])
- // printf ("WARNING: multiple backward edge\n");
- continue;
- edgefaces[i][1] = f;
- return -i;
- }
- #if 0
- if (v1 == edge->v[0] && v2 == edge->v[1])
- {
- printf ("WARNING: multiple forward edge\n");
- return i;
- }
- #endif
- }
- }
-
-// emit an edge
- if (numedges >= MAX_MAP_EDGES)
- Error ("numedges == MAX_MAP_EDGES");
- edge = &dedges[numedges];
- numedges++;
- edge->v[0] = v1;
- edge->v[1] = v2;
- edgefaces[numedges-1][0] = f;
-
- return numedges-1;
-}
-
-/*
-===========================================================================
-
-FACE MERGING
-
-===========================================================================
-*/
-
-/*
-=============
-TryMerge
-
-If two polygons share a common edge and the edges that meet at the
-common points are both inside the other polygons, merge them
-
-Returns NULL if the faces couldn't be merged, or the new face.
-The originals will NOT be freed.
-=============
-*/
-face_t *TryMerge (face_t *f1, face_t *f2, vec3_t planenormal)
-{
- face_t *newf;
- winding_t *nw;
-
- if (!f1->w || !f2->w)
- return NULL;
- if (f1->texinfo != f2->texinfo)
- return NULL;
- if (f1->planenum != f2->planenum) // on front and back sides
- return NULL;
- if (f1->contents != f2->contents)
- return NULL;
-
-
- nw = TryMergeWinding (f1->w, f2->w, planenormal);
- if (!nw)
- return NULL;
-
- c_merge++;
- newf = NewFaceFromFace (f1);
- newf->w = nw;
-
- f1->merged = newf;
- f2->merged = newf;
-
- return newf;
-}
-
-/*
-===============
-MergeNodeFaces
-===============
-*/
-void MergeNodeFaces (node_t *node)
-{
- face_t *f1, *f2, *end;
- face_t *merged;
- plane_t *plane;
-
- plane = &mapplanes[node->planenum];
- merged = NULL;
-
- for (f1 = node->faces ; f1 ; f1 = f1->next)
- {
- if (f1->merged || f1->split[0] || f1->split[1])
- continue;
-
- for (f2 = node->faces ; f2 != f1 ; f2=f2->next)
- {
- if (f2->merged || f2->split[0] || f2->split[1])
- continue;
-
- //IDBUG: always passes the face's node's normal to TryMerge()
- //regardless of which side the face is on. Approximately 50% of
- //the time the face will be on the other side of node, and thus
- //the result of the convex/concave test in TryMergeWinding(),
- //which depends on the normal, is flipped. This causes faces
- //that shouldn't be merged to be merged and faces that
- //should be merged to not be merged.
- //the following added line fixes this bug
- //thanks to: Alexander Malmberg <alexander@malmberg.org>
- plane = &mapplanes[f1->planenum];
- //
- merged = TryMerge (f1, f2, plane->normal);
- if (!merged)
- continue;
-
- // add merged to the end of the node face list
- // so it will be checked against all the faces again
- for (end = node->faces ; end->next ; end = end->next)
- ;
- merged->next = NULL;
- end->next = merged;
- break;
- }
- }
-}
-
-//=====================================================================
-
-/*
-===============
-SubdivideFace
-
-Chop up faces that are larger than we want in the surface cache
-===============
-*/
-void SubdivideFace (node_t *node, face_t *f)
-{
- float mins, maxs;
- vec_t v;
- int axis, i;
- texinfo_t *tex;
- vec3_t temp;
- vec_t dist;
- winding_t *w, *frontw, *backw;
-
- if (f->merged)
- return;
-
-// special (non-surface cached) faces don't need subdivision
- tex = &texinfo[f->texinfo];
-
- if ( tex->flags & (SURF_WARP|SURF_SKY) )
- {
- return;
- }
-
- for (axis = 0 ; axis < 2 ; axis++)
- {
- while (1)
- {
- mins = 999999;
- maxs = -999999;
-
- VectorCopy (tex->vecs[axis], temp);
- w = f->w;
- for (i=0 ; i<w->numpoints ; i++)
- {
- v = DotProduct (w->p[i], temp);
- if (v < mins)
- mins = v;
- if (v > maxs)
- maxs = v;
- }
-#if 0
- if (maxs - mins <= 0)
- Error ("zero extents");
-#endif
- if (axis == 2)
- { // allow double high walls
- if (maxs - mins <= subdivide_size/* *2 */)
- break;
- }
- else if (maxs - mins <= subdivide_size)
- break;
-
- // split it
- c_subdivide++;
-
- v = VectorNormalize (temp);
-
- dist = (mins + subdivide_size - 16)/v;
-
- ClipWindingEpsilon (w, temp, dist, ON_EPSILON, &frontw, &backw);
- if (!frontw || !backw)
- Error ("SubdivideFace: didn't split the polygon");
-
- f->split[0] = NewFaceFromFace (f);
- f->split[0]->w = frontw;
- f->split[0]->next = node->faces;
- node->faces = f->split[0];
-
- f->split[1] = NewFaceFromFace (f);
- f->split[1]->w = backw;
- f->split[1]->next = node->faces;
- node->faces = f->split[1];
-
- SubdivideFace (node, f->split[0]);
- SubdivideFace (node, f->split[1]);
- return;
- }
- }
-}
-
-void SubdivideNodeFaces (node_t *node)
-{
- face_t *f;
-
- for (f = node->faces ; f ; f=f->next)
- {
- SubdivideFace (node, f);
- }
-}
-
-//===========================================================================
-
-int c_nodefaces;
-
-
-/*
-============
-FaceFromPortal
-
-============
-*/
-face_t *FaceFromPortal (portal_t *p, int pside)
-{
- face_t *f;
- side_t *side;
-
- side = p->side;
- if (!side)
- return NULL; // portal does not bridge different visible contents
-
- f = AllocFace ();
-
- f->texinfo = side->texinfo;
- f->planenum = (side->planenum & ~1) | pside;
- f->portal = p;
-
- if ( (p->nodes[pside]->contents & CONTENTS_WINDOW)
- && VisibleContents(p->nodes[!pside]->contents^p->nodes[pside]->contents) == CONTENTS_WINDOW )
- return NULL; // don't show insides of windows
-
- if (pside)
- {
- f->w = ReverseWinding(p->winding);
- f->contents = p->nodes[1]->contents;
- }
- else
- {
- f->w = CopyWinding(p->winding);
- f->contents = p->nodes[0]->contents;
- }
- return f;
-}
-
-
-/*
-===============
-MakeFaces_r
-
-If a portal will make a visible face,
-mark the side that originally created it
-
- solid / empty : solid
- solid / water : solid
- water / empty : water
- water / water : none
-===============
-*/
-void MakeFaces_r (node_t *node)
-{
- portal_t *p;
- int s;
-
- // recurse down to leafs
- if (node->planenum != PLANENUM_LEAF)
- {
- MakeFaces_r (node->children[0]);
- MakeFaces_r (node->children[1]);
-
- // merge together all visible faces on the node
- if (!nomerge)
- MergeNodeFaces (node);
- if (!nosubdiv)
- SubdivideNodeFaces (node);
-
- return;
- }
-
- // solid leafs never have visible faces
- if (node->contents & CONTENTS_SOLID)
- return;
-
- // see which portals are valid
- for (p=node->portals ; p ; p = p->next[s])
- {
- s = (p->nodes[1] == node);
-
- p->face[s] = FaceFromPortal (p, s);
- if (p->face[s])
- {
- c_nodefaces++;
- p->face[s]->next = p->onnode->faces;
- p->onnode->faces = p->face[s];
- }
- }
-}
-
-/*
-============
-MakeFaces
-============
-*/
-void MakeFaces (node_t *node)
-{
- qprintf ("--- MakeFaces ---\n");
- c_merge = 0;
- c_subdivide = 0;
- c_nodefaces = 0;
-
- MakeFaces_r (node);
-
- qprintf ("%5i makefaces\n", c_nodefaces);
- qprintf ("%5i merged\n", c_merge);
- qprintf ("%5i subdivided\n", c_subdivide);
-}
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Foobar; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+===========================================================================
+*/
+// faces.c
+
+#include "qbsp.h"
+#include "l_mem.h"
+
+/*
+
+ some faces will be removed before saving, but still form nodes:
+
+ the insides of sky volumes
+ meeting planes of different water current volumes
+
+*/
+
+// undefine for dumb linear searches
+#define USE_HASHING
+
+#define INTEGRAL_EPSILON 0.01
+#define POINT_EPSILON 0.5
+#define OFF_EPSILON 0.5
+
+int c_merge;
+int c_subdivide;
+
+int c_totalverts;
+int c_uniqueverts;
+int c_degenerate;
+int c_tjunctions;
+int c_faceoverflows;
+int c_facecollapse;
+int c_badstartverts;
+
+#define MAX_SUPERVERTS 512
+int superverts[MAX_SUPERVERTS];
+int numsuperverts;
+
+face_t *edgefaces[MAX_MAP_EDGES][2];
+int firstmodeledge = 1;
+int firstmodelface;
+
+int c_tryedges;
+
+vec3_t edge_dir;
+vec3_t edge_start;
+vec_t edge_len;
+
+int num_edge_verts;
+int edge_verts[MAX_MAP_VERTS];
+
+face_t *NewFaceFromFace (face_t *f);
+
+//===========================================================================
+
+typedef struct hashvert_s
+{
+ struct hashvert_s *next;
+ int num;
+} hashvert_t;
+
+
+#define HASH_SIZE 64
+
+
+int vertexchain[MAX_MAP_VERTS]; // the next vertex in a hash chain
+int hashverts[HASH_SIZE*HASH_SIZE]; // a vertex number, or 0 for no verts
+
+face_t *edgefaces[MAX_MAP_EDGES][2];
+
+//============================================================================
+
+
+unsigned HashVec (vec3_t vec)
+{
+ int x, y;
+
+ x = (4096 + (int)(vec[0]+0.5)) >> 7;
+ y = (4096 + (int)(vec[1]+0.5)) >> 7;
+
+ if ( x < 0 || x >= HASH_SIZE || y < 0 || y >= HASH_SIZE )
+ Error ("HashVec: point outside valid range");
+
+ return y*HASH_SIZE + x;
+}
+
+#ifdef USE_HASHING
+/*
+=============
+GetVertex
+
+Uses hashing
+=============
+*/
+int GetVertexnum (vec3_t in)
+{
+ int h;
+ int i;
+ float *p;
+ vec3_t vert;
+ int vnum;
+
+ c_totalverts++;
+
+ for (i=0 ; i<3 ; i++)
+ {
+ if ( fabs(in[i] - Q_rint(in[i])) < INTEGRAL_EPSILON)
+ vert[i] = Q_rint(in[i]);
+ else
+ vert[i] = in[i];
+ }
+
+ h = HashVec (vert);
+
+ for (vnum=hashverts[h] ; vnum ; vnum=vertexchain[vnum])
+ {
+ p = dvertexes[vnum].point;
+ if ( fabs(p[0]-vert[0])<POINT_EPSILON
+ && fabs(p[1]-vert[1])<POINT_EPSILON
+ && fabs(p[2]-vert[2])<POINT_EPSILON )
+ return vnum;
+ }
+
+// emit a vertex
+ if (numvertexes == MAX_MAP_VERTS)
+ Error ("numvertexes == MAX_MAP_VERTS");
+
+ dvertexes[numvertexes].point[0] = vert[0];
+ dvertexes[numvertexes].point[1] = vert[1];
+ dvertexes[numvertexes].point[2] = vert[2];
+
+ vertexchain[numvertexes] = hashverts[h];
+ hashverts[h] = numvertexes;
+
+ c_uniqueverts++;
+
+ numvertexes++;
+
+ return numvertexes-1;
+}
+#else
+/*
+==================
+GetVertexnum
+
+Dumb linear search
+==================
+*/
+int GetVertexnum (vec3_t v)
+{
+ int i, j;
+ dvertex_t *dv;
+ vec_t d;
+
+ c_totalverts++;
+
+ // make really close values exactly integral
+ for (i=0 ; i<3 ; i++)
+ {
+ if ( fabs(v[i] - (int)(v[i]+0.5)) < INTEGRAL_EPSILON )
+ v[i] = (int)(v[i]+0.5);
+ if (v[i] < -4096 || v[i] > 4096)
+ Error ("GetVertexnum: outside +/- 4096");
+ }
+
+ // search for an existing vertex match
+ for (i=0, dv=dvertexes ; i<numvertexes ; i++, dv++)
+ {
+ for (j=0 ; j<3 ; j++)
+ {
+ d = v[j] - dv->point[j];
+ if ( d > POINT_EPSILON || d < -POINT_EPSILON)
+ break;
+ }
+ if (j == 3)
+ return i; // a match
+ }
+
+ // new point
+ if (numvertexes == MAX_MAP_VERTS)
+ Error ("MAX_MAP_VERTS");
+ VectorCopy (v, dv->point);
+ numvertexes++;
+ c_uniqueverts++;
+
+ return numvertexes-1;
+}
+#endif
+
+
+/*
+==================
+FaceFromSuperverts
+
+The faces vertexes have been added to the superverts[] array,
+and there may be more there than can be held in a face (MAXEDGES).
+
+If less, the faces vertexnums[] will be filled in, otherwise
+face will reference a tree of split[] faces until all of the
+vertexnums can be added.
+
+superverts[base] will become face->vertexnums[0], and the others
+will be circularly filled in.
+==================
+*/
+void FaceFromSuperverts (node_t *node, face_t *f, int base)
+{
+ face_t *newf;
+ int remaining;
+ int i;
+
+ remaining = numsuperverts;
+ while (remaining > MAXEDGES)
+ { // must split into two faces, because of vertex overload
+ c_faceoverflows++;
+
+ newf = f->split[0] = NewFaceFromFace (f);
+ newf = f->split[0];
+ newf->next = node->faces;
+ node->faces = newf;
+
+ newf->numpoints = MAXEDGES;
+ for (i=0 ; i<MAXEDGES ; i++)
+ newf->vertexnums[i] = superverts[(i+base)%numsuperverts];
+
+ f->split[1] = NewFaceFromFace (f);
+ f = f->split[1];
+ f->next = node->faces;
+ node->faces = f;
+
+ remaining -= (MAXEDGES-2);
+ base = (base+MAXEDGES-1)%numsuperverts;
+ }
+
+ // copy the vertexes back to the face
+ f->numpoints = remaining;
+ for (i=0 ; i<remaining ; i++)
+ f->vertexnums[i] = superverts[(i+base)%numsuperverts];
+}
+
+
+/*
+==================
+EmitFaceVertexes
+==================
+*/
+void EmitFaceVertexes (node_t *node, face_t *f)
+{
+ winding_t *w;
+ int i;
+
+ if (f->merged || f->split[0] || f->split[1])
+ return;
+
+ w = f->w;
+ for (i=0 ; i<w->numpoints ; i++)
+ {
+ if (noweld)
+ { // make every point unique
+ if (numvertexes == MAX_MAP_VERTS)
+ Error ("MAX_MAP_VERTS");
+ superverts[i] = numvertexes;
+ VectorCopy (w->p[i], dvertexes[numvertexes].point);
+ numvertexes++;
+ c_uniqueverts++;
+ c_totalverts++;
+ }
+ else
+ superverts[i] = GetVertexnum (w->p[i]);
+ }
+ numsuperverts = w->numpoints;
+
+ // this may fragment the face if > MAXEDGES
+ FaceFromSuperverts (node, f, 0);
+}
+
+/*
+==================
+EmitVertexes_r
+==================
+*/
+void EmitVertexes_r (node_t *node)
+{
+ int i;
+ face_t *f;
+
+ if (node->planenum == PLANENUM_LEAF)
+ return;
+
+ for (f=node->faces ; f ; f=f->next)
+ {
+ EmitFaceVertexes (node, f);
+ }
+
+ for (i=0 ; i<2 ; i++)
+ EmitVertexes_r (node->children[i]);
+}
+
+
+#ifdef USE_HASHING
+/*
+==========
+FindEdgeVerts
+
+Uses the hash tables to cut down to a small number
+==========
+*/
+void FindEdgeVerts (vec3_t v1, vec3_t v2)
+{
+ int x1, x2, y1, y2, t;
+ int x, y;
+ int vnum;
+
+#if 0
+{
+ int i;
+ num_edge_verts = numvertexes-1;
+ for (i=0 ; i<numvertexes-1 ; i++)
+ edge_verts[i] = i+1;
+}
+#endif
+
+ x1 = (4096 + (int)(v1[0]+0.5)) >> 7;
+ y1 = (4096 + (int)(v1[1]+0.5)) >> 7;
+ x2 = (4096 + (int)(v2[0]+0.5)) >> 7;
+ y2 = (4096 + (int)(v2[1]+0.5)) >> 7;
+
+ if (x1 > x2)
+ {
+ t = x1;
+ x1 = x2;
+ x2 = t;
+ }
+ if (y1 > y2)
+ {
+ t = y1;
+ y1 = y2;
+ y2 = t;
+ }
+#if 0
+ x1--;
+ x2++;
+ y1--;
+ y2++;
+ if (x1 < 0)
+ x1 = 0;
+ if (x2 >= HASH_SIZE)
+ x2 = HASH_SIZE;
+ if (y1 < 0)
+ y1 = 0;
+ if (y2 >= HASH_SIZE)
+ y2 = HASH_SIZE;
+#endif
+ num_edge_verts = 0;
+ for (x=x1 ; x <= x2 ; x++)
+ {
+ for (y=y1 ; y <= y2 ; y++)
+ {
+ for (vnum=hashverts[y*HASH_SIZE+x] ; vnum ; vnum=vertexchain[vnum])
+ {
+ edge_verts[num_edge_verts++] = vnum;
+ }
+ }
+ }
+}
+
+#else
+/*
+==========
+FindEdgeVerts
+
+Forced a dumb check of everything
+==========
+*/
+void FindEdgeVerts (vec3_t v1, vec3_t v2)
+{
+ int i;
+
+ num_edge_verts = numvertexes-1;
+ for (i=0 ; i<num_edge_verts ; i++)
+ edge_verts[i] = i+1;
+}
+#endif
+
+/*
+==========
+TestEdge
+
+Can be recursively reentered
+==========
+*/
+void TestEdge (vec_t start, vec_t end, int p1, int p2, int startvert)
+{
+ int j, k;
+ vec_t dist;
+ vec3_t delta;
+ vec3_t exact;
+ vec3_t off;
+ vec_t error;
+ vec3_t p;
+
+ if (p1 == p2)
+ {
+ c_degenerate++;
+ return; // degenerate edge
+ }
+
+ for (k=startvert ; k<num_edge_verts ; k++)
+ {
+ j = edge_verts[k];
+ if (j==p1 || j == p2)
+ continue;
+
+ VectorCopy (dvertexes[j].point, p);
+
+ VectorSubtract (p, edge_start, delta);
+ dist = DotProduct (delta, edge_dir);
+ if (dist <=start || dist >= end)
+ continue; // off an end
+ VectorMA (edge_start, dist, edge_dir, exact);
+ VectorSubtract (p, exact, off);
+ error = VectorLength (off);
+
+ if (fabs(error) > OFF_EPSILON)
+ continue; // not on the edge
+
+ // break the edge
+ c_tjunctions++;
+ TestEdge (start, dist, p1, j, k+1);
+ TestEdge (dist, end, j, p2, k+1);
+ return;
+ }
+
+ // the edge p1 to p2 is now free of tjunctions
+ if (numsuperverts >= MAX_SUPERVERTS)
+ Error ("MAX_SUPERVERTS");
+ superverts[numsuperverts] = p1;
+ numsuperverts++;
+}
+
+/*
+==================
+FixFaceEdges
+
+==================
+*/
+void FixFaceEdges (node_t *node, face_t *f)
+{
+ int p1, p2;
+ int i;
+ vec3_t e2;
+ vec_t len;
+ int count[MAX_SUPERVERTS], start[MAX_SUPERVERTS];
+ int base;
+
+ if (f->merged || f->split[0] || f->split[1])
+ return;
+
+ numsuperverts = 0;
+
+ for (i=0 ; i<f->numpoints ; i++)
+ {
+ p1 = f->vertexnums[i];
+ p2 = f->vertexnums[(i+1)%f->numpoints];
+
+ VectorCopy (dvertexes[p1].point, edge_start);
+ VectorCopy (dvertexes[p2].point, e2);
+
+ FindEdgeVerts (edge_start, e2);
+
+ VectorSubtract (e2, edge_start, edge_dir);
+ len = VectorNormalize(edge_dir);
+
+ start[i] = numsuperverts;
+ TestEdge (0, len, p1, p2, 0);
+
+ count[i] = numsuperverts - start[i];
+ }
+
+ if (numsuperverts < 3)
+ { // entire face collapsed
+ f->numpoints = 0;
+ c_facecollapse++;
+ return;
+ }
+
+ // we want to pick a vertex that doesn't have tjunctions
+ // on either side, which can cause artifacts on trifans,
+ // especially underwater
+ for (i=0 ; i<f->numpoints ; i++)
+ {
+ if (count[i] == 1 && count[(i+f->numpoints-1)%f->numpoints] == 1)
+ break;
+ }
+ if (i == f->numpoints)
+ {
+ f->badstartvert = true;
+ c_badstartverts++;
+ base = 0;
+ }
+ else
+ { // rotate the vertex order
+ base = start[i];
+ }
+
+ // this may fragment the face if > MAXEDGES
+ FaceFromSuperverts (node, f, base);
+}
+
+/*
+==================
+FixEdges_r
+==================
+*/
+void FixEdges_r (node_t *node)
+{
+ int i;
+ face_t *f;
+
+ if (node->planenum == PLANENUM_LEAF)
+ return;
+
+ for (f=node->faces ; f ; f=f->next)
+ FixFaceEdges (node, f);
+
+ for (i=0 ; i<2 ; i++)
+ FixEdges_r (node->children[i]);
+}
+
+/*
+===========
+FixTjuncs
+
+===========
+*/
+void FixTjuncs (node_t *headnode)
+{
+ // snap and merge all vertexes
+ qprintf ("---- snap verts ----\n");
+ memset (hashverts, 0, sizeof(hashverts));
+ c_totalverts = 0;
+ c_uniqueverts = 0;
+ c_faceoverflows = 0;
+ EmitVertexes_r (headnode);
+ qprintf ("%i unique from %i\n", c_uniqueverts, c_totalverts);
+
+ // break edges on tjunctions
+ qprintf ("---- tjunc ----\n");
+ c_tryedges = 0;
+ c_degenerate = 0;
+ c_facecollapse = 0;
+ c_tjunctions = 0;
+ if (!notjunc)
+ FixEdges_r (headnode);
+ qprintf ("%5i edges degenerated\n", c_degenerate);
+ qprintf ("%5i faces degenerated\n", c_facecollapse);
+ qprintf ("%5i edges added by tjunctions\n", c_tjunctions);
+ qprintf ("%5i faces added by tjunctions\n", c_faceoverflows);
+ qprintf ("%5i bad start verts\n", c_badstartverts);
+}
+
+
+//========================================================
+
+int c_faces;
+
+face_t *AllocFace (void)
+{
+ face_t *f;
+
+ f = GetMemory(sizeof(*f));
+ memset (f, 0, sizeof(*f));
+ c_faces++;
+
+ return f;
+}
+
+face_t *NewFaceFromFace (face_t *f)
+{
+ face_t *newf;
+
+ newf = AllocFace ();
+ *newf = *f;
+ newf->merged = NULL;
+ newf->split[0] = newf->split[1] = NULL;
+ newf->w = NULL;
+ return newf;
+}
+
+void FreeFace (face_t *f)
+{
+ if (f->w)
+ FreeWinding (f->w);
+ FreeMemory(f);
+ c_faces--;
+}
+
+//========================================================
+
+/*
+==================
+GetEdge
+
+Called by writebsp.
+Don't allow four way edges
+==================
+*/
+int GetEdge2 (int v1, int v2, face_t *f)
+{
+ dedge_t *edge;
+ int i;
+
+ c_tryedges++;
+
+ if (!noshare)
+ {
+ for (i=firstmodeledge ; i < numedges ; i++)
+ {
+ edge = &dedges[i];
+ if (v1 == edge->v[1] && v2 == edge->v[0]
+ && edgefaces[i][0]->contents == f->contents)
+ {
+ if (edgefaces[i][1])
+ // printf ("WARNING: multiple backward edge\n");
+ continue;
+ edgefaces[i][1] = f;
+ return -i;
+ }
+ #if 0
+ if (v1 == edge->v[0] && v2 == edge->v[1])
+ {
+ printf ("WARNING: multiple forward edge\n");
+ return i;
+ }
+ #endif
+ }
+ }
+
+// emit an edge
+ if (numedges >= MAX_MAP_EDGES)
+ Error ("numedges == MAX_MAP_EDGES");
+ edge = &dedges[numedges];
+ numedges++;
+ edge->v[0] = v1;
+ edge->v[1] = v2;
+ edgefaces[numedges-1][0] = f;
+
+ return numedges-1;
+}
+
+/*
+===========================================================================
+
+FACE MERGING
+
+===========================================================================
+*/
+
+/*
+=============
+TryMerge
+
+If two polygons share a common edge and the edges that meet at the
+common points are both inside the other polygons, merge them
+
+Returns NULL if the faces couldn't be merged, or the new face.
+The originals will NOT be freed.
+=============
+*/
+face_t *TryMerge (face_t *f1, face_t *f2, vec3_t planenormal)
+{
+ face_t *newf;
+ winding_t *nw;
+
+ if (!f1->w || !f2->w)
+ return NULL;
+ if (f1->texinfo != f2->texinfo)
+ return NULL;
+ if (f1->planenum != f2->planenum) // on front and back sides
+ return NULL;
+ if (f1->contents != f2->contents)
+ return NULL;
+
+
+ nw = TryMergeWinding (f1->w, f2->w, planenormal);
+ if (!nw)
+ return NULL;
+
+ c_merge++;
+ newf = NewFaceFromFace (f1);
+ newf->w = nw;
+
+ f1->merged = newf;
+ f2->merged = newf;
+
+ return newf;
+}
+
+/*
+===============
+MergeNodeFaces
+===============
+*/
+void MergeNodeFaces (node_t *node)
+{
+ face_t *f1, *f2, *end;
+ face_t *merged;
+ plane_t *plane;
+
+ plane = &mapplanes[node->planenum];
+ merged = NULL;
+
+ for (f1 = node->faces ; f1 ; f1 = f1->next)
+ {
+ if (f1->merged || f1->split[0] || f1->split[1])
+ continue;
+
+ for (f2 = node->faces ; f2 != f1 ; f2=f2->next)
+ {
+ if (f2->merged || f2->split[0] || f2->split[1])
+ continue;
+
+ //IDBUG: always passes the face's node's normal to TryMerge()
+ //regardless of which side the face is on. Approximately 50% of
+ //the time the face will be on the other side of node, and thus
+ //the result of the convex/concave test in TryMergeWinding(),
+ //which depends on the normal, is flipped. This causes faces
+ //that shouldn't be merged to be merged and faces that
+ //should be merged to not be merged.
+ //the following added line fixes this bug
+ //thanks to: Alexander Malmberg <alexander@malmberg.org>
+ plane = &mapplanes[f1->planenum];
+ //
+ merged = TryMerge (f1, f2, plane->normal);
+ if (!merged)
+ continue;
+
+ // add merged to the end of the node face list
+ // so it will be checked against all the faces again
+ for (end = node->faces ; end->next ; end = end->next)
+ ;
+ merged->next = NULL;
+ end->next = merged;
+ break;
+ }
+ }
+}
+
+//=====================================================================
+
+/*
+===============
+SubdivideFace
+
+Chop up faces that are larger than we want in the surface cache
+===============
+*/
+void SubdivideFace (node_t *node, face_t *f)
+{
+ float mins, maxs;
+ vec_t v;
+ int axis, i;
+ texinfo_t *tex;
+ vec3_t temp;
+ vec_t dist;
+ winding_t *w, *frontw, *backw;
+
+ if (f->merged)
+ return;
+
+// special (non-surface cached) faces don't need subdivision
+ tex = &texinfo[f->texinfo];
+
+ if ( tex->flags & (SURF_WARP|SURF_SKY) )
+ {
+ return;
+ }
+
+ for (axis = 0 ; axis < 2 ; axis++)
+ {
+ while (1)
+ {
+ mins = 999999;
+ maxs = -999999;
+
+ VectorCopy (tex->vecs[axis], temp);
+ w = f->w;
+ for (i=0 ; i<w->numpoints ; i++)
+ {
+ v = DotProduct (w->p[i], temp);
+ if (v < mins)
+ mins = v;
+ if (v > maxs)
+ maxs = v;
+ }
+#if 0
+ if (maxs - mins <= 0)
+ Error ("zero extents");
+#endif
+ if (axis == 2)
+ { // allow double high walls
+ if (maxs - mins <= subdivide_size/* *2 */)
+ break;
+ }
+ else if (maxs - mins <= subdivide_size)
+ break;
+
+ // split it
+ c_subdivide++;
+
+ v = VectorNormalize (temp);
+
+ dist = (mins + subdivide_size - 16)/v;
+
+ ClipWindingEpsilon (w, temp, dist, ON_EPSILON, &frontw, &backw);
+ if (!frontw || !backw)
+ Error ("SubdivideFace: didn't split the polygon");
+
+ f->split[0] = NewFaceFromFace (f);
+ f->split[0]->w = frontw;
+ f->split[0]->next = node->faces;
+ node->faces = f->split[0];
+
+ f->split[1] = NewFaceFromFace (f);
+ f->split[1]->w = backw;
+ f->split[1]->next = node->faces;
+ node->faces = f->split[1];
+
+ SubdivideFace (node, f->split[0]);
+ SubdivideFace (node, f->split[1]);
+ return;
+ }
+ }
+}
+
+void SubdivideNodeFaces (node_t *node)
+{
+ face_t *f;
+
+ for (f = node->faces ; f ; f=f->next)
+ {
+ SubdivideFace (node, f);
+ }
+}
+
+//===========================================================================
+
+int c_nodefaces;
+
+
+/*
+============
+FaceFromPortal
+
+============
+*/
+face_t *FaceFromPortal (portal_t *p, int pside)
+{
+ face_t *f;
+ side_t *side;
+
+ side = p->side;
+ if (!side)
+ return NULL; // portal does not bridge different visible contents
+
+ f = AllocFace ();
+
+ f->texinfo = side->texinfo;
+ f->planenum = (side->planenum & ~1) | pside;
+ f->portal = p;
+
+ if ( (p->nodes[pside]->contents & CONTENTS_WINDOW)
+ && VisibleContents(p->nodes[!pside]->contents^p->nodes[pside]->contents) == CONTENTS_WINDOW )
+ return NULL; // don't show insides of windows
+
+ if (pside)
+ {
+ f->w = ReverseWinding(p->winding);
+ f->contents = p->nodes[1]->contents;
+ }
+ else
+ {
+ f->w = CopyWinding(p->winding);
+ f->contents = p->nodes[0]->contents;
+ }
+ return f;
+}
+
+
+/*
+===============
+MakeFaces_r
+
+If a portal will make a visible face,
+mark the side that originally created it
+
+ solid / empty : solid
+ solid / water : solid
+ water / empty : water
+ water / water : none
+===============
+*/
+void MakeFaces_r (node_t *node)
+{
+ portal_t *p;
+ int s;
+
+ // recurse down to leafs
+ if (node->planenum != PLANENUM_LEAF)
+ {
+ MakeFaces_r (node->children[0]);
+ MakeFaces_r (node->children[1]);
+
+ // merge together all visible faces on the node
+ if (!nomerge)
+ MergeNodeFaces (node);
+ if (!nosubdiv)
+ SubdivideNodeFaces (node);
+
+ return;
+ }
+
+ // solid leafs never have visible faces
+ if (node->contents & CONTENTS_SOLID)
+ return;
+
+ // see which portals are valid
+ for (p=node->portals ; p ; p = p->next[s])
+ {
+ s = (p->nodes[1] == node);
+
+ p->face[s] = FaceFromPortal (p, s);
+ if (p->face[s])
+ {
+ c_nodefaces++;
+ p->face[s]->next = p->onnode->faces;
+ p->onnode->faces = p->face[s];
+ }
+ }
+}
+
+/*
+============
+MakeFaces
+============
+*/
+void MakeFaces (node_t *node)
+{
+ qprintf ("--- MakeFaces ---\n");
+ c_merge = 0;
+ c_subdivide = 0;
+ c_nodefaces = 0;
+
+ MakeFaces_r (node);
+
+ qprintf ("%5i makefaces\n", c_nodefaces);
+ qprintf ("%5i merged\n", c_merge);
+ qprintf ("%5i subdivided\n", c_subdivide);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-16 13:44:18 +0000