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authortma <tma@edf5b092-35ff-0310-97b2-ce42778d08ea>2005-09-28 18:55:31 +0000
committertma <tma@edf5b092-35ff-0310-97b2-ce42778d08ea>2005-09-28 18:55:31 +0000
commitec912002d3f75729c627cf467903c4607a529495 (patch)
treeb944aa3ec6a159d4607b3bb25cb09640bca02ddb /q3map/tjunction.c
parentea1ca0473a510a02fff82788a2a6c8d95a6bf2d3 (diff)
downloadioquake3-aero-ec912002d3f75729c627cf467903c4607a529495.tar.gz
ioquake3-aero-ec912002d3f75729c627cf467903c4607a529495.zip
* Removed q3map and associated common and libs directories
git-svn-id: svn://svn.icculus.org/quake3/trunk@123 edf5b092-35ff-0310-97b2-ce42778d08ea
Diffstat (limited to 'q3map/tjunction.c')
-rw-r--r--q3map/tjunction.c551
1 files changed, 0 insertions, 551 deletions
diff --git a/q3map/tjunction.c b/q3map/tjunction.c
deleted file mode 100644
index a1acabe..0000000
--- a/q3map/tjunction.c
+++ /dev/null
@@ -1,551 +0,0 @@
-/*
-===========================================================================
-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
-===========================================================================
-*/
-#include "qbsp.h"
-
-typedef struct edgePoint_s {
- float intercept;
- vec3_t xyz;
- struct edgePoint_s *prev, *next;
-} edgePoint_t;
-
-typedef struct edgeLine_s {
- vec3_t normal1;
- float dist1;
-
- vec3_t normal2;
- float dist2;
-
- vec3_t origin;
- vec3_t dir;
-
- edgePoint_t chain; // unused element of doubly linked list
-} edgeLine_t;
-
-typedef struct {
- float length;
- drawVert_t *dv[2];
-} originalEdge_t;
-
-#define MAX_ORIGINAL_EDGES 0x10000
-originalEdge_t originalEdges[MAX_ORIGINAL_EDGES];
-int numOriginalEdges;
-
-
-#define MAX_EDGE_LINES 0x10000
-edgeLine_t edgeLines[MAX_EDGE_LINES];
-int numEdgeLines;
-
-int c_degenerateEdges;
-int c_addedVerts;
-int c_totalVerts;
-
-int c_natural, c_rotate, c_cant;
-
-// these should be whatever epsilon we actually expect,
-// plus SNAP_INT_TO_FLOAT
-#define LINE_POSITION_EPSILON 0.25
-#define POINT_ON_LINE_EPSILON 0.25
-
-/*
-====================
-InsertPointOnEdge
-====================
-*/
-void InsertPointOnEdge( vec3_t v, edgeLine_t *e ) {
- vec3_t delta;
- float d;
- edgePoint_t *p, *scan;
-
- VectorSubtract( v, e->origin, delta );
- d = DotProduct( delta, e->dir );
-
- p = malloc( sizeof(edgePoint_t) );
- p->intercept = d;
- VectorCopy( v, p->xyz );
-
- if ( e->chain.next == &e->chain ) {
- e->chain.next = e->chain.prev = p;
- p->next = p->prev = &e->chain;
- return;
- }
-
- scan = e->chain.next;
- for ( ; scan != &e->chain ; scan = scan->next ) {
- d = p->intercept - scan->intercept;
- if ( d > -LINE_POSITION_EPSILON && d < LINE_POSITION_EPSILON ) {
- free( p );
- return; // the point is already set
- }
-
- if ( p->intercept < scan->intercept ) {
- // insert here
- p->prev = scan->prev;
- p->next = scan;
- scan->prev->next = p;
- scan->prev = p;
- return;
- }
- }
-
- // add at the end
- p->prev = scan->prev;
- p->next = scan;
- scan->prev->next = p;
- scan->prev = p;
-}
-
-
-/*
-====================
-AddEdge
-====================
-*/
-int AddEdge( vec3_t v1, vec3_t v2, qboolean createNonAxial ) {
- int i;
- edgeLine_t *e;
- float d;
- vec3_t dir;
-
- VectorSubtract( v2, v1, dir );
- d = VectorNormalize( dir, dir );
- if ( d < 0.1 ) {
- // if we added a 0 length vector, it would make degenerate planes
- c_degenerateEdges++;
- return -1;
- }
-
- if ( !createNonAxial ) {
- if ( fabs( dir[0] + dir[1] + dir[2] ) != 1.0 ) {
- if ( numOriginalEdges == MAX_ORIGINAL_EDGES ) {
- Error( "MAX_ORIGINAL_EDGES" );
- }
- originalEdges[ numOriginalEdges ].dv[0] = (drawVert_t *)v1;
- originalEdges[ numOriginalEdges ].dv[1] = (drawVert_t *)v2;
- originalEdges[ numOriginalEdges ].length = d;
- numOriginalEdges++;
- return -1;
- }
- }
-
- for ( i = 0 ; i < numEdgeLines ; i++ ) {
- e = &edgeLines[i];
-
- d = DotProduct( v1, e->normal1 ) - e->dist1;
- if ( d < -POINT_ON_LINE_EPSILON || d > POINT_ON_LINE_EPSILON ) {
- continue;
- }
- d = DotProduct( v1, e->normal2 ) - e->dist2;
- if ( d < -POINT_ON_LINE_EPSILON || d > POINT_ON_LINE_EPSILON ) {
- continue;
- }
-
- d = DotProduct( v2, e->normal1 ) - e->dist1;
- if ( d < -POINT_ON_LINE_EPSILON || d > POINT_ON_LINE_EPSILON ) {
- continue;
- }
- d = DotProduct( v2, e->normal2 ) - e->dist2;
- if ( d < -POINT_ON_LINE_EPSILON || d > POINT_ON_LINE_EPSILON ) {
- continue;
- }
-
- // this is the edge
- InsertPointOnEdge( v1, e );
- InsertPointOnEdge( v2, e );
- return i;
- }
-
- // create a new edge
- if ( numEdgeLines >= MAX_EDGE_LINES ) {
- Error( "MAX_EDGE_LINES" );
- }
-
- e = &edgeLines[ numEdgeLines ];
- numEdgeLines++;
-
- e->chain.next = e->chain.prev = &e->chain;
-
- VectorCopy( v1, e->origin );
- VectorCopy( dir, e->dir );
-
- MakeNormalVectors( e->dir, e->normal1, e->normal2 );
- e->dist1 = DotProduct( e->origin, e->normal1 );
- e->dist2 = DotProduct( e->origin, e->normal2 );
-
- InsertPointOnEdge( v1, e );
- InsertPointOnEdge( v2, e );
-
- return numEdgeLines - 1;
-}
-
-/*
-====================
-AddSurfaceEdges
-====================
-*/
-void AddSurfaceEdges( mapDrawSurface_t *ds ) {
- int i;
-
- for ( i = 0 ; i < ds->numVerts ; i++ ) {
- // save the edge number in the lightmap field
- // so we don't need to look it up again
- ds->verts[i].lightmap[0] =
- AddEdge( ds->verts[i].xyz, ds->verts[(i+1) % ds->numVerts].xyz, qfalse );
- }
-}
-
-/*
-================
-ColinearEdge
-================
-*/
-qboolean ColinearEdge( vec3_t v1, vec3_t v2, vec3_t v3 ) {
- vec3_t midpoint, dir, offset, on;
- float d;
-
- VectorSubtract( v2, v1, midpoint );
- VectorSubtract( v3, v1, dir );
- d = VectorNormalize( dir, dir );
- if ( d == 0 ) {
- return qfalse; // degenerate
- }
-
- d = DotProduct( midpoint, dir );
- VectorScale( dir, d, on );
- VectorSubtract( midpoint, on, offset );
- d = VectorLength ( offset );
-
- if ( d < 0.1 ) {
- return qtrue;
- }
-
- return qfalse;
-}
-
-/*
-====================
-AddPatchEdges
-
-Add colinear border edges, which will fix some classes of patch to
-brush tjunctions
-====================
-*/
-void AddPatchEdges( mapDrawSurface_t *ds ) {
- int i;
- float *v1, *v2, *v3;
-
- for ( i = 0 ; i < ds->patchWidth - 2; i+=2 ) {
- v1 = ds->verts[ i ].xyz;
- v2 = ds->verts[ i + 1 ].xyz;
- v3 = ds->verts[ i + 2 ].xyz;
-
- // if v2 is the midpoint of v1 to v3, add an edge from v1 to v3
- if ( ColinearEdge( v1, v2, v3 ) ) {
- AddEdge( v1, v3, qfalse );
- }
-
- v1 = ds->verts[ ( ds->patchHeight - 1 ) * ds->patchWidth + i ].xyz;
- v2 = ds->verts[ ( ds->patchHeight - 1 ) * ds->patchWidth + i + 1 ].xyz;
- v3 = ds->verts[ ( ds->patchHeight - 1 ) * ds->patchWidth + i + 2 ].xyz;
-
- // if v2 is on the v1 to v3 line, add an edge from v1 to v3
- if ( ColinearEdge( v1, v2, v3 ) ) {
- AddEdge( v1, v3, qfalse );
- }
- }
-
- for ( i = 0 ; i < ds->patchHeight - 2 ; i+=2 ) {
- v1 = ds->verts[ i * ds->patchWidth ].xyz;
- v2 = ds->verts[ ( i + 1 ) * ds->patchWidth ].xyz;
- v3 = ds->verts[ ( i + 2 ) * ds->patchWidth ].xyz;
-
- // if v2 is the midpoint of v1 to v3, add an edge from v1 to v3
- if ( ColinearEdge( v1, v2, v3 ) ) {
- AddEdge( v1, v3, qfalse );
- }
-
- v1 = ds->verts[ ( ds->patchWidth - 1 ) + i * ds->patchWidth ].xyz;
- v2 = ds->verts[ ( ds->patchWidth - 1 ) + ( i + 1 ) * ds->patchWidth ].xyz;
- v3 = ds->verts[ ( ds->patchWidth - 1 ) + ( i + 2 ) * ds->patchWidth ].xyz;
-
- // if v2 is the midpoint of v1 to v3, add an edge from v1 to v3
- if ( ColinearEdge( v1, v2, v3 ) ) {
- AddEdge( v1, v3, qfalse );
- }
- }
-
-
-}
-
-
-/*
-====================
-FixSurfaceJunctions
-====================
-*/
-#define MAX_SURFACE_VERTS 256
-void FixSurfaceJunctions( mapDrawSurface_t *ds ) {
- int i, j, k;
- edgeLine_t *e;
- edgePoint_t *p;
- int originalVerts;
- int counts[MAX_SURFACE_VERTS];
- int originals[MAX_SURFACE_VERTS];
- int firstVert[MAX_SURFACE_VERTS];
- drawVert_t verts[MAX_SURFACE_VERTS], *v1, *v2;
- int numVerts;
- float start, end, frac;
- vec3_t delta;
-
- originalVerts = ds->numVerts;
-
- numVerts = 0;
- for ( i = 0 ; i < ds->numVerts ; i++ ) {
- counts[i] = 0;
- firstVert[i] = numVerts;
-
- // copy first vert
- if ( numVerts == MAX_SURFACE_VERTS ) {
- Error( "MAX_SURFACE_VERTS" );
- }
- verts[numVerts] = ds->verts[i];
- originals[numVerts] = i;
- numVerts++;
-
- // check to see if there are any t junctions before the next vert
- v1 = &ds->verts[i];
- v2 = &ds->verts[ (i+1) % ds->numVerts ];
-
- j = (int)ds->verts[i].lightmap[0];
- if ( j == -1 ) {
- continue; // degenerate edge
- }
- e = &edgeLines[ j ];
-
- VectorSubtract( v1->xyz, e->origin, delta );
- start = DotProduct( delta, e->dir );
-
- VectorSubtract( v2->xyz, e->origin, delta );
- end = DotProduct( delta, e->dir );
-
-
- if ( start < end ) {
- p = e->chain.next;
- } else {
- p = e->chain.prev;
- }
-
- for ( ; p != &e->chain ; ) {
- if ( start < end ) {
- if ( p->intercept > end - ON_EPSILON ) {
- break;
- }
- } else {
- if ( p->intercept < end + ON_EPSILON ) {
- break;
- }
- }
-
- if (
- ( start < end && p->intercept > start + ON_EPSILON ) ||
- ( start > end && p->intercept < start - ON_EPSILON ) ) {
- // insert this point
- if ( numVerts == MAX_SURFACE_VERTS ) {
- Error( "MAX_SURFACE_VERTS" );
- }
-
- // take the exact intercept point
- VectorCopy( p->xyz, verts[ numVerts ].xyz );
-
- // copy the normal
- VectorCopy( v1->normal, verts[ numVerts ].normal );
-
- // interpolate the texture coordinates
- frac = ( p->intercept - start ) / ( end - start );
- for ( j = 0 ; j < 2 ; j++ ) {
- verts[ numVerts ].st[j] = v1->st[j] +
- frac * ( v2->st[j] - v1->st[j] );
- }
- originals[numVerts] = i;
- numVerts++;
- counts[i]++;
- }
-
- if ( start < end ) {
- p = p->next;
- } else {
- p = p->prev;
- }
- }
- }
-
- c_addedVerts += numVerts - ds->numVerts;
- c_totalVerts += numVerts;
-
-
- // FIXME: check to see if the entire surface degenerated
- // after snapping
-
- // rotate the points so that the initial vertex is between
- // two non-subdivided edges
- for ( i = 0 ; i < numVerts ; i++ ) {
- if ( originals[ (i+1) % numVerts ] == originals[ i ] ) {
- continue;
- }
- j = (i + numVerts - 1 ) % numVerts;
- k = (i + numVerts - 2 ) % numVerts;
- if ( originals[ j ] == originals[ k ] ) {
- continue;
- }
- break;
- }
-
- if ( i == 0 ) {
- // fine the way it is
- c_natural++;
-
- ds->numVerts = numVerts;
- ds->verts = malloc( numVerts * sizeof( *ds->verts ) );
- memcpy( ds->verts, verts, numVerts * sizeof( *ds->verts ) );
-
- return;
- }
- if ( i == numVerts ) {
- // create a vertex in the middle to start the fan
- c_cant++;
-
-/*
- memset ( &verts[numVerts], 0, sizeof( verts[numVerts] ) );
- for ( i = 0 ; i < numVerts ; i++ ) {
- for ( j = 0 ; j < 10 ; j++ ) {
- verts[numVerts].xyz[j] += verts[i].xyz[j];
- }
- }
- for ( j = 0 ; j < 10 ; j++ ) {
- verts[numVerts].xyz[j] /= numVerts;
- }
-
- i = numVerts;
- numVerts++;
-*/
- } else {
- // just rotate the vertexes
- c_rotate++;
-
- }
-
- ds->numVerts = numVerts;
- ds->verts = malloc( numVerts * sizeof( *ds->verts ) );
-
- for ( j = 0 ; j < ds->numVerts ; j++ ) {
- ds->verts[j] = verts[ ( j + i ) % ds->numVerts ];
- }
-}
-
-/*
-================
-EdgeCompare
-================
-*/
-int EdgeCompare( const void *elem1, const void *elem2 ) {
- float d1, d2;
-
- d1 = ((originalEdge_t *)elem1)->length;
- d2 = ((originalEdge_t *)elem2)->length;
-
- if ( d1 < d2 ) {
- return -1;
- }
- if ( d2 > d1 ) {
- return 1;
- }
- return 0;
-}
-
-
-/*
-================
-FixTJunctions
-
-Call after the surface list has been pruned, but before lightmap allocation
-================
-*/
-void FixTJunctions( entity_t *ent ) {
- int i;
- mapDrawSurface_t *ds;
- int axialEdgeLines;
- originalEdge_t *e;
-
- qprintf("----- FixTJunctions -----\n");
-
- numEdgeLines = 0;
- numOriginalEdges = 0;
-
- // add all the edges
- // this actually creates axial edges, but it
- // only creates originalEdge_t structures
- // for non-axial edges
- for ( i = ent->firstDrawSurf ; i < numMapDrawSurfs ; i++ ) {
- ds = &mapDrawSurfs[i];
- if ( ds->patch ) {
- AddPatchEdges( ds );
- } else if ( ds->shaderInfo->autosprite || ds->shaderInfo->notjunc || ds->miscModel ) {
- // miscModels don't add tjunctions
- } else {
- AddSurfaceEdges( ds );
- }
- }
-
- axialEdgeLines = numEdgeLines;
-
- // sort the non-axial edges by length
- qsort( originalEdges, numOriginalEdges, sizeof(originalEdges[0]), EdgeCompare );
-
- // add the non-axial edges, longest first
- // this gives the most accurate edge description
- for ( i = 0 ; i < numOriginalEdges ; i++ ) {
- e = &originalEdges[i];
- e->dv[0]->lightmap[0] = AddEdge( e->dv[0]->xyz, e->dv[1]->xyz, qtrue );
- }
-
- qprintf( "%6i axial edge lines\n", axialEdgeLines );
- qprintf( "%6i non-axial edge lines\n", numEdgeLines - axialEdgeLines );
- qprintf( "%6i degenerate edges\n", c_degenerateEdges );
-
- // insert any needed vertexes
- for ( i = ent->firstDrawSurf ; i < numMapDrawSurfs ; i++ ) {
- ds = &mapDrawSurfs[i];
- if ( ds->patch ) {
- continue;
- }
- if ( ds->shaderInfo->autosprite || ds->shaderInfo->notjunc || ds->miscModel ) {
- continue;
- }
-
- FixSurfaceJunctions( ds );
- }
-
- qprintf( "%6i verts added for tjunctions\n", c_addedVerts );
- qprintf( "%6i total verts\n", c_totalVerts );
- qprintf( "%6i naturally ordered\n", c_natural );
- qprintf( "%6i rotated orders\n", c_rotate );
- qprintf( "%6i can't order\n", c_cant );
-}