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Issue 45:Input triangle based area creation (another try)

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This commit is contained in:
Mikko Mononen
2010-07-13 07:19:10 +00:00
parent a48b50d89c
commit 5ebcb453fb
14 changed files with 3665 additions and 4289 deletions
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35
Recast/Source/RecastFilter.cpp
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@@ -35,10 +35,28 @@ void rcFilterLowHangingWalkableObstacles(const int walkableClimb, rcHeightfield&
for (int x = 0; x < w; ++x)
{
rcSpan* ps = 0;
bool previousWalkable = false;
for (rcSpan* s = solid.spans[x + y*w]; s; ps = s, s = s->next)
{
const bool walkable = (s->flags & RC_WALKABLE) != 0;
const bool previousWalkable = ps && (ps->flags & RC_WALKABLE) != 0;
const bool walkable = s->area != RC_NULL_AREA;
// If current span is not walkable, but there is walkable
// span just below it, mark the span above it walkable too.
if (!walkable && previousWalkable)
{
if (rcAbs((int)s->smax - (int)ps->smax) <= walkableClimb)
s->area = RC_NULL_AREA;
}
// Copy walkable flag so that it cannot propagate
// past multiple non-walkable objects.
previousWalkable = walkable;
}
/* rcSpan* ps = 0;
for (rcSpan* s = solid.spans[x + y*w]; s; ps = s, s = s->next)
{
const bool walkable = s->flags != RC_NULL_AREA;
const bool previousWalkable = ps && ps->flags != RC_NULL_AREA;
// If current span is not walkable, but there is walkable
// span just below it, mark the span above it walkable too.
// Missuse the edge flag so that walkable flag cannot propagate
@@ -46,7 +64,7 @@ void rcFilterLowHangingWalkableObstacles(const int walkableClimb, rcHeightfield&
if (!walkable && previousWalkable)
{
if (rcAbs((int)s->smax - (int)ps->smax) <= walkableClimb)
s->flags |= RC_LEDGE;
s->flags |= 1;
}
}
// Transfer "fake ledges" to walkables.
@@ -55,7 +73,8 @@ void rcFilterLowHangingWalkableObstacles(const int walkableClimb, rcHeightfield&
if (s->flags & RC_LEDGE)
s->flags |= RC_WALKABLE;
s->flags &= ~RC_LEDGE;
}
}*/
}
}
}
@@ -78,7 +97,7 @@ void rcFilterLedgeSpans(const int walkableHeight,
for (rcSpan* s = solid.spans[x + y*w]; s; s = s->next)
{
// Skip non walkable spans.
if ((s->flags & RC_WALKABLE) == 0)
if (s->area == RC_NULL_AREA)
continue;
const int bot = (int)(s->smax);
@@ -134,13 +153,13 @@ void rcFilterLedgeSpans(const int walkableHeight,
// The current span is close to a ledge if the drop to any
// neighbour span is less than the walkableClimb.
if (minh < -walkableClimb)
s->flags |= RC_LEDGE;
s->area = RC_NULL_AREA;
// If the difference between all neighbours is too large,
// we are at steep slope, mark the span as ledge.
if ((asmax - asmin) > walkableClimb)
{
s->flags |= RC_LEDGE;
s->area = RC_NULL_AREA;
}
}
}
@@ -173,7 +192,7 @@ void rcFilterWalkableLowHeightSpans(int walkableHeight,
const int bot = (int)(s->smax);
const int top = s->next ? (int)(s->next->smin) : MAX_HEIGHT;
if ((top - bot) <= walkableHeight)
s->flags &= ~RC_WALKABLE;
s->area = RC_NULL_AREA;
}
}
}