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- Merge latest ZDBSP changes into trunk.

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SVN r2094 (trunk)
This commit is contained in:
Randy Heit 2010-01-03 01:03:44 +00:00
parent 56ab0e681d
commit 8bbd90b200
3 changed files with 36 additions and 6 deletions
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31
src/nodebuild.cpp
View file

@ -490,7 +490,8 @@ int FNodeBuilder::SelectSplitter (DWORD set, node_t &node, DWORD &splitseg, int
int FNodeBuilder::Heuristic (node_t &node, DWORD set, bool honorNoSplit)
{
int score = 0;
// Set the initial score above 0 so that near vertex anti-weighting is less likely to produce a negative score.
int score = 1000000;
int segsInSet = 0;
int counts[2] = { 0, 0 };
int realSegs[2] = { 0, 0 };
@ -596,7 +597,28 @@ int FNodeBuilder::Heuristic (node_t &node, DWORD set, bool honorNoSplit)
frac = InterceptVector (node, *test);
if (frac < 0.001 || frac > 0.999)
{
score -= int(1 / frac);
FPrivVert *v1 = &Vertices[test->v1];
FPrivVert *v2 = &Vertices[test->v2];
double x = v1->x, y = v1->y;
x += frac * (v2->x - x);
y += frac * (v2->y - y);
if (fabs(x - v1->x) < VERTEX_EPSILON+1 && fabs(y - v1->y) < VERTEX_EPSILON+1)
{
D(Printf("Splitter will produce same start vertex as seg %d\n", i));
return -1;
}
if (fabs(x - v2->x) < VERTEX_EPSILON+1 && fabs(y - v2->y) < VERTEX_EPSILON+1)
{
D(Printf("Splitter will produce same end vertex as seg %d\n", i));
return -1;
}
if (frac > 0.999)
{
frac = 1 - frac;
}
int penalty = int(1 / frac);
score = MAX(score - penalty, 1);
D(Printf ("Penalized splitter by %d for being near endpt of seg %d (%f).\n", penalty, i, frac));
}
counts[0]++;
@ -767,6 +789,11 @@ void FNodeBuilder::SplitSegs (DWORD set, node_t &node, DWORD splitseg, DWORD &ou
newvert.y += fixed_t(frac * double(Vertices[seg->v2].y - newvert.y));
vertnum = VertexMap->SelectVertexClose (newvert);
if (vertnum == seg->v1 || vertnum == seg->v2)
{
Printf("SelectVertexClose selected endpoint of seg %u\n", set);
}
seg2 = SplitSeg (set, vertnum, sidev1);
Segs[seg2].next = outset0;

3
src/nodebuild.h
View file

@ -243,6 +243,9 @@ private:
// Units are in fixed_ts.
const double SIDE_EPSILON = 6.5536;
// Vertices within this distance of each other will be considered as the same vertex.
#define VERTEX_EPSILON 6 // This is a fixed_t value
inline int FNodeBuilder::PointOnSide (int x, int y, int x1, int y1, int dx, int dy)
{
// For most cases, a simple dot product is enough.

8
src/nodebuild_utility.cpp
View file

@ -53,10 +53,6 @@
static const int PO_LINE_START = 1;
static const int PO_LINE_EXPLICIT = 5;
// Vertices within this distance of each other vertically and horizontally
// will be considered as the same vertex.
const fixed_t VERTEX_EPSILON = 6;
#if 0
#define D(x) x
#else
@ -555,8 +551,12 @@ int FNodeBuilder::FVertexMap::SelectVertexClose (FNodeBuilder::FPrivVert &vert)
for (i = 0; i < block.Size(); ++i)
{
#if VERTEX_EPSILON <= 1
if (vertices[block[i]].x == vert.x && vertices[block[i]].y == vert.y)
#else
if (abs(vertices[block[i]].x - vert.x) < VERTEX_EPSILON &&
abs(vertices[block[i]].y - vert.y) < VERTEX_EPSILON)
#endif
{
return block[i];
}