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fix hang in tjunction.c

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git-svn-id: svn://svn.icculus.org/netradiant/trunk@189 61c419a2-8eb2-4b30-bcec-8cead039b335
This commit is contained in:
divverent 2009-02-14 16:32:12 +00:00
parent 015b22755e
commit 7f9ebdace7
2 changed files with 15 additions and 13 deletions
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2
tools/quake3/q3map2/q3map2.h
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@ -2374,7 +2374,7 @@ Q_EXTERN bspAdvertisement_t bspAds[ MAX_MAP_ADVERTISEMENTS ];
allocated = def; \
while(reqitem >= allocated && allocated) \
allocated *= 2; \
if(allocated > 2147483647 / sizeof(*ptr)) \
if(!allocated || allocated > 2147483647 / sizeof(*ptr)) \
{ \
Error(#ptr " over 2 GB"); \
} \

26
tools/quake3/q3map2/tjunction.c
View File

@ -55,7 +55,7 @@ typedef struct edgeLine_s {
vec3_t origin;
vec3_t dir;
edgePoint_t chain; // unused element of doubly linked list
edgePoint_t *chain; // unused element of doubly linked list
} edgeLine_t;
typedef struct {
@ -100,14 +100,14 @@ void InsertPointOnEdge( vec3_t v, edgeLine_t *e ) {
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;
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 ) {
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 );
@ -195,7 +195,8 @@ int AddEdge( vec3_t v1, vec3_t v2, qboolean createNonAxial ) {
e = &edgeLines[ numEdgeLines ];
numEdgeLines++;
e->chain.next = e->chain.prev = &e->chain;
e->chain = safe_malloc( sizeof(edgePoint_t) );
e->chain->next = e->chain->prev = e->chain;
VectorCopy( v1, e->origin );
VectorCopy( dir, e->dir );
@ -373,12 +374,12 @@ void FixSurfaceJunctions( mapDrawSurface_t *ds ) {
if ( start < end ) {
p = e->chain.next;
p = e->chain->next;
} else {
p = e->chain.prev;
p = e->chain->prev;
}
for ( ; p != &e->chain ; ) {
for ( ; p != e->chain ; ) {
if ( start < end ) {
if ( p->intercept > end - ON_EPSILON ) {
break;
@ -628,7 +629,7 @@ void FixTJunctions( entity_t *ent )
shaderInfo_t *si;
int axialEdgeLines;
originalEdge_t *e;
bspDrawVert_t *dv;
/* meta mode has its own t-junction code (currently not as good as this code) */
//% if( meta )
@ -679,7 +680,8 @@ void FixTJunctions( entity_t *ent )
// this gives the most accurate edge description
for ( i = 0 ; i < numOriginalEdges ; i++ ) {
e = &originalEdges[i];
e->dv[ 0 ]->lightmap[ 0 ][ 0 ] = AddEdge( e->dv[ 0 ]->xyz, e->dv[ 1 ]->xyz, qtrue );
dv = e->dv[0]; // e might change during AddEdge
dv->lightmap[ 0 ][ 0 ] = AddEdge( e->dv[ 0 ]->xyz, e->dv[ 1 ]->xyz, qtrue );
}
Sys_FPrintf( SYS_VRB, "%9d axial edge lines\n", axialEdgeLines );