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Add a PlaneFlip macro.

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This commit is contained in:
Bill Currie 2011-05-07 19:29:03 +09:00
parent d3771dfeba
commit d638fdce83
2 changed files with 16 additions and 14 deletions
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6
include/QF/mathlib.h
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@ -266,6 +266,12 @@ void QuatInverse (const quat_t in, quat_t out);
#define PlaneDiff(point,plane) \
(PlaneDist (point, plane) - (plane)->dist)
#define PlaneFlip(sp, dp) \
do { \
(dp)->dist = -(sp)->dist; \
VectorNegate ((sp)->normal, (dp)->normal); \
} while (0)
extern mplane_t * const frustum;
extern inline qboolean R_CullBox (const vec3_t mins, const vec3_t maxs);
extern inline qboolean R_CullSphere (const vec3_t origin, const float radius);

24
tools/qfbsp/source/portals.c
View file

@ -201,13 +201,10 @@ MakeHeadnodePortals (node_t *node)
pl = &bplanes[n];
memset (pl, 0, sizeof (*pl));
if (j) {
pl->normal[i] = -1;
pl->dist = -bounds[j][i];
} else {
pl->normal[i] = 1;
pl->dist = bounds[j][i];
}
pl->normal[i] = 1;
pl->dist = bounds[j][i];
if (j)
PlaneFlip (pl, pl);
p->planenum = FindPlane (pl, &side);
p->winding = BaseWindingForPlane (pl);
@ -269,12 +266,12 @@ CutNodePortals_r (node_t *node)
CalcNodeBounds (node);
if (node->contents) {
// at a leaf, no more dividing
/// Leaf nodes contain the final portals.
return;
}
if (node->detail && cutnode_detail) {
// detail nodes are fake leaf nodes
/// Detail nodes are fake leaf nodes.
return;
}
@ -289,12 +286,11 @@ CutNodePortals_r (node_t *node)
w = BaseWindingForPlane (plane);
side = 0;
for (p = node->portals; p; p = p->next[side]) {
clipplane = planes[p->planenum]; // COPY the plane
clipplane = planes[p->planenum]; // copy the plane
if (p->nodes[0] == node)
side = 0;
else if (p->nodes[1] == node) {
clipplane.dist = -clipplane.dist;
VectorNegate (clipplane.normal, clipplane.normal);
PlaneFlip (&clipplane, &clipplane);
side = 1;
} else
Sys_Error ("CutNodePortals_r: mislinked portal");
@ -331,10 +327,10 @@ CutNodePortals_r (node_t *node)
/// Remove each portal from the node. When finished, the node will
/// have no portals on it.
RemovePortalFromNode (p, node);
// The fragments will be added back to the other node.
/// The fragments will be added back to the other node.
RemovePortalFromNode (p, other_node);
// cut the portal into two portals, one on each side of the cut plane
/// Cut the portal in two, one on each side of the cut plane.
DivideWinding (p->winding, plane, &frontwinding, &backwinding);
if (!frontwinding) {