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- Fixed: Since UDMF allows for fractional vertex coordinates, it is no longer

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safe for P_AlignPlane() to truncate coordinates when searching for the
  furthest vertex from the line.


SVN r1676 (trunk)
This commit is contained in:
Randy Heit 2009-06-23 02:33:18 +00:00
parent 0506606efc
commit 861a955cef
2 changed files with 11 additions and 10 deletions
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7
docs/rh-log.txt
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@ -1,4 +1,9 @@
June 19, 2009
June 22, 2009
- Fixed: Since UDMF allows for fractional vertex coordinates, it is no longer
safe for P_AlignPlane() to truncate coordinates when searching for the
furthest vertex from the line.
June 19, 2009
- The reorganized DirectInput game controller code finally compiles. (Ugh! It
took far too long to reach this point.) Manual axis configuration is
currently disabled, since I need to rewrite that, too. The eventual point of

14
src/p_slopes.cpp
View file

@ -462,7 +462,7 @@ void P_SpawnSlopeMakers (FMapThing *firstmt, FMapThing *lastmt)
static void P_AlignPlane (sector_t *sec, line_t *line, int which)
{
sector_t *refsec;
int bestdist;
double bestdist;
vertex_t *refvert = (*sec->lines)->v1; // Shut up, GCC
int i;
line_t **probe;
@ -471,23 +471,19 @@ static void P_AlignPlane (sector_t *sec, line_t *line, int which)
return;
// Find furthest vertex from the reference line. It, along with the two ends
// of the line will define the plane.
// of the line, will define the plane.
bestdist = 0;
for (i = sec->linecount*2, probe = sec->lines; i > 0; i--)
{
int dist;
double dist;
vertex_t *vert;
// Do calculations with only the upper bits, because the lower ones
// are all zero, and we would overflow for a lot of distances if we
// kept them around.
if (i & 1)
vert = (*probe++)->v2;
else
vert = (*probe)->v1;
dist = abs (((line->v1->y - vert->y) >> FRACBITS) * (line->dx >> FRACBITS) -
((line->v1->x - vert->x) >> FRACBITS) * (line->dy >> FRACBITS));
dist = fabs((double(line->v1->y) - vert->y) * line->dx -
(double(line->v1->x) - vert->x) * line->dy);
if (dist > bestdist)
{