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Following up on r371; found another optimization for math rounding errors

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in BaseWindingForPlane().  This allows me to get rid of an extra call to
VectorSetLength() which contain floating point multiplications.  Behavior
of BaseWindingForPlane() has been verified against base_winding regression
test (comparing output w/ logging patch).


git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/trunk@375 8a3a26a2-13c4-0310-b231-cf6edde360e5
This commit is contained in:
rambetter 2010-12-28 19:26:52 +00:00
parent 3725d2baeb
commit 05e2114294
1 changed files with 2 additions and 6 deletions
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8
tools/quake3/common/polylib.c
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@ -253,13 +253,9 @@ winding_t *BaseWindingForPlane (vec3_t normal, vec_t dist)
vright[2] = normal[1];
break;
}
CrossProduct(normal, vright, vup);
// IMPORTANT NOTE: vright and vup are NOT unit vectors at this point.
// However, normal, vup, and vright are pairwise perpendicular.
VectorSetLength(vup, MAX_WORLD_COORD * 2, vup);
// NOTE: vright is NOT a unit vector at this point.
VectorSetLength(vright, MAX_WORLD_COORD * 2, vright);
CrossProduct(normal, vright, vup);
VectorScale(normal, dist, org);
w = AllocWinding(4);