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same with MAX_POINTS_ON_WINDING

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This commit is contained in:
Bill Currie 2003-09-08 03:25:01 +00:00
parent ca91f7b727
commit 50d83a7c56
2 changed files with 20 additions and 74 deletions
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6
tools/qfbsp/include/bsp5.h
View file

@ -54,8 +54,6 @@ typedef struct
vec3_t points[8]; // variable sized
} winding_t;
#define MAX_POINTS_ON_WINDING 64
winding_t *BaseWindingForPlane (plane_t *p);
void CheckWinding (winding_t *w);
winding_t *NewWinding (int points);
@ -67,10 +65,6 @@ void DivideWinding (winding_t *in, plane_t *split, winding_t **front, winding_t
//============================================================================
#define MAXEDGES 32
#define MAXPOINTS 28 // don't let a base face get past this
// because it can be split more later
typedef struct visfacet_s
{
struct visfacet_s *next;

88
tools/qfbsp/source/qfbsp.c
View file

@ -177,16 +177,19 @@ winding_t *
ClipWinding (winding_t *in, plane_t *split, qboolean keepon)
{
int maxpts, i, j;
int sides[MAX_POINTS_ON_WINDING + 1];
int *sides;
int counts[3];
vec_t dot;
vec_t dists[MAX_POINTS_ON_WINDING + 1];
vec_t *dists;
vec_t *p1, *p2;
vec3_t mid;
winding_t *neww;
counts[0] = counts[1] = counts[2] = 0;
sides = alloca ((in->numpoints + 1) * sizeof (int));
dists = alloca ((in->numpoints + 1) * sizeof (vec_t));
// determine sides for each point
for (i = 0; i < in->numpoints; i++) {
dot = DotProduct (in->points[i], split->normal);
@ -273,41 +276,30 @@ void
DivideWinding (winding_t *in, plane_t *split, winding_t **front,
winding_t **back)
{
int maxpts, i, j;
int sides[MAX_POINTS_ON_WINDING + 1];
int maxpts, i;
int counts[3];
plane_t plane;
vec_t dot;
vec_t dists[MAX_POINTS_ON_WINDING + 1];
vec_t *p1, *p2;
vec3_t mid;
winding_t *f, *b;
winding_t *tmp;
counts[0] = counts[1] = counts[2] = 0;
// determine sides for each point
for (i = 0; i < in->numpoints; i++) {
dot = DotProduct (in->points[i], split->normal);
dot -= split->dist;
dists[i] = dot;
dot = DotProduct (in->points[i], split->normal) - split->dist;
if (dot > ON_EPSILON)
sides[i] = SIDE_FRONT;
counts[SIDE_FRONT]++;
else if (dot < -ON_EPSILON)
sides[i] = SIDE_BACK;
else {
sides[i] = SIDE_ON;
}
counts[sides[i]]++;
counts[SIDE_BACK]++;
}
sides[i] = sides[0];
dists[i] = dists[0];
*front = *back = NULL;
if (!counts[0]) {
if (!counts[SIDE_FRONT]) {
*back = in;
return;
}
if (!counts[1]) {
if (!counts[SIDE_BACK]) {
*front = in;
return;
}
@ -315,54 +307,14 @@ DivideWinding (winding_t *in, plane_t *split, winding_t **front,
maxpts = in->numpoints + 4; // can't use counts[0]+2 because
// of fp grouping errors
*front = f = NewWinding (maxpts);
*back = b = NewWinding (maxpts);
tmp = CopyWinding (in);
*front = ClipWinding (tmp, split, 0);
for (i = 0; i < in->numpoints; i++) {
p1 = in->points[i];
plane.dist = -split->dist;
VectorNegate (split->normal, plane.normal);
if (sides[i] == SIDE_ON) {
VectorCopy (p1, f->points[f->numpoints]);
f->numpoints++;
VectorCopy (p1, b->points[b->numpoints]);
b->numpoints++;
continue;
}
if (sides[i] == SIDE_FRONT) {
VectorCopy (p1, f->points[f->numpoints]);
f->numpoints++;
}
if (sides[i] == SIDE_BACK) {
VectorCopy (p1, b->points[b->numpoints]);
b->numpoints++;
}
if (sides[i + 1] == SIDE_ON || sides[i + 1] == sides[i])
continue;
// generate a split point
p2 = in->points[(i + 1) % in->numpoints];
dot = dists[i] / (dists[i] - dists[i + 1]);
for (j = 0; j < 3; j++) { // avoid round off error when
// possible
if (split->normal[j] == 1)
mid[j] = split->dist;
else if (split->normal[j] == -1)
mid[j] = -split->dist;
else
mid[j] = p1[j] + dot * (p2[j] - p1[j]);
}
VectorCopy (mid, f->points[f->numpoints]);
f->numpoints++;
VectorCopy (mid, b->points[b->numpoints]);
b->numpoints++;
}
if (f->numpoints > maxpts || b->numpoints > maxpts)
Sys_Error ("ClipWinding: points exceeded estimate");
tmp = CopyWinding (in);
*back = ClipWinding (tmp, &plane, 0);
}
winding_t *
@ -371,7 +323,7 @@ NewWinding (int points)
int size;
winding_t *w;
if (points < 3 || points > MAX_POINTS_ON_WINDING)
if (points < 3)
Sys_Error ("NewWinding: %i points", points);
c_activewindings++;