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force axis aligned planes to truely be axis aligned (fixes degenerate

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polygons being generated by ClipWinding) and use LordHavoc's point off
plane correction code
This commit is contained in:
Bill Currie 2003-09-17 20:26:57 +00:00
parent fea382d1d9
commit 83ba424ffc
1 changed files with 6 additions and 6 deletions
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12
tools/qfbsp/source/brush.c
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@ -73,11 +73,11 @@ CheckFace (face_t *f)
d = DotProduct (p1, planes[f->planenum].normal)
- planes[f->planenum].dist;
//XXX point off plane autofix
if (d < -ON_EPSILON || d > ON_EPSILON)
Sys_Error ("CheckFace: point off plane");
#if 0 //XXX point off plane autofix
printf ("CheckFace: point off plane: %g @ (%g %g %g)\n", d,
p1[0], p1[1], p1[2]);
VectorMultSub (p1, d, planes[f->planenum].normal, p1);
#endif
// check the edge isn't degenerate
p2 = f->points->points[j];
@ -174,14 +174,17 @@ NormalizePlane (plane_t *dp)
if (dp->normal[0] == 1.0) {
dp->type = PLANE_X;
dp->normal[1] = dp->normal[2] = 0.0;
return;
}
if (dp->normal[1] == 1.0) {
dp->type = PLANE_Y;
dp->normal[0] = dp->normal[2] = 0.0;
return;
}
if (dp->normal[2] == 1.0) {
dp->type = PLANE_Z;
dp->normal[0] = dp->normal[1] = 0.0;
return;
}
@ -230,9 +233,6 @@ FindPlane (plane_t *dplane, int *side)
VectorSubtract (dp->normal, pl.normal, t);
dot = DotProduct (dp->normal, pl.normal);
if (dot > 1.0 - ANGLEEPSILON
&& fabs(t[0]) < DISTEPSILON * DISTEPSILON
&& fabs(t[1]) < DISTEPSILON * DISTEPSILON
&& fabs(t[2]) < DISTEPSILON * DISTEPSILON
&& fabs(dp->dist - pl.dist) < DISTEPSILON) { // regular match
return i;
}