server_common/recastnavigation_v1.6.0
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Fixed crash in rcBuildPolyMesh() when one of the contours had zero vertices.

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This commit is contained in:
Mikko Mononen 2009-11-25 15:21:49 +00:00
parent f77a7511ed
commit d142754ad5
2 changed files with 29 additions and 7 deletions
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2
Recast/Source/RecastDebugDraw.cpp
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@ -617,6 +617,8 @@ void rcDebugDrawContours(rcDebugDraw* dd, const rcContourSet& cset, const float
for (int i = 0; i < cset.nconts; ++i)
{
const rcContour& c = cset.conts[i];
if (!c.nverts)
continue;
unsigned int color = intToCol(c.reg, a);
for (int j = 0; j < c.nverts; ++j)

34
Recast/Source/RecastMesh.cpp
View File

@ -661,20 +661,26 @@ static bool removeVertex(rcPolyMesh& mesh, const unsigned short rem, const int m
// Triangulate the hole.
int ntris = triangulate(nhole, &tverts[0], &thole[0], tris);
if (ntris < 0)
{
ntris = -ntris;
if (rcGetLog())
rcGetLog()->log(RC_LOG_WARNING, "removeVertex: triangulate() returned bad results.");
}
// Merge the hole triangles back to polygons.
rcScopedDelete<unsigned short> polys = new unsigned short[(ntris+1)*nvp];
if (!polys)
{
if (rcGetLog())
rcGetLog()->log(RC_LOG_WARNING, "removeVertex: Out of memory 'polys' (%d).", (ntris+1)*nvp);
rcGetLog()->log(RC_LOG_ERROR, "removeVertex: Out of memory 'polys' (%d).", (ntris+1)*nvp);
return false;
}
rcScopedDelete<unsigned short> pregs = new unsigned short[ntris];
if (!pregs)
{
if (rcGetLog())
rcGetLog()->log(RC_LOG_WARNING, "removeVertex: Out of memory 'pregs' (%d).", ntris);
rcGetLog()->log(RC_LOG_ERROR, "removeVertex: Out of memory 'pregs' (%d).", ntris);
return false;
}
@ -754,6 +760,12 @@ static bool removeVertex(rcPolyMesh& mesh, const unsigned short rem, const int m
p[j] = polys[i*nvp+j];
mesh.regs[mesh.npolys] = pregs[i];
mesh.npolys++;
if (mesh.npolys > maxTris)
{
if (rcGetLog())
rcGetLog()->log(RC_LOG_ERROR, "removeVertex: Too many polygons %d (max:%d).", mesh.npolys, maxTris);
return false;
}
}
return true;
@ -774,6 +786,8 @@ bool rcBuildPolyMesh(rcContourSet& cset, int nvp, rcPolyMesh& mesh)
int maxVertsPerCont = 0;
for (int i = 0; i < cset.nconts; ++i)
{
// Skip null contours.
if (cset.conts[i].nverts < 3) continue;
maxVertices += cset.conts[i].nverts;
maxTris += cset.conts[i].nverts - 2;
maxVertsPerCont = rcMax(maxVertsPerCont, cset.conts[i].nverts);
@ -802,14 +816,14 @@ bool rcBuildPolyMesh(rcContourSet& cset, int nvp, rcPolyMesh& mesh)
rcGetLog()->log(RC_LOG_ERROR, "rcBuildPolyMesh: Out of memory 'mesh.verts' (%d).", maxVertices);
return false;
}
mesh.polys = new unsigned short[maxTris*nvp*2];
mesh.polys = new unsigned short[maxTris*nvp*2*2];
if (!mesh.polys)
{
if (rcGetLog())
rcGetLog()->log(RC_LOG_ERROR, "rcBuildPolyMesh: Out of memory 'mesh.polys' (%d).", maxTris*nvp*2);
return false;
}
mesh.regs = new unsigned short[maxTris];
mesh.regs = new unsigned short[maxTris*2];
if (!mesh.regs)
{
if (rcGetLog())
@ -870,7 +884,7 @@ bool rcBuildPolyMesh(rcContourSet& cset, int nvp, rcPolyMesh& mesh)
{
rcContour& cont = cset.conts[i];
// Skip empty contours.
// Skip null contours.
if (cont.nverts < 3)
continue;
@ -896,6 +910,7 @@ bool rcBuildPolyMesh(rcContourSet& cset, int nvp, rcPolyMesh& mesh)
}*/
ntris = -ntris;
}
// Add and merge vertices.
for (int j = 0; j < cont.nverts; ++j)
{
@ -971,7 +986,6 @@ bool rcBuildPolyMesh(rcContourSet& cset, int nvp, rcPolyMesh& mesh)
}
}
// Store polygons.
for (int j = 0; j < npolys; ++j)
{
@ -981,6 +995,12 @@ bool rcBuildPolyMesh(rcContourSet& cset, int nvp, rcPolyMesh& mesh)
p[k] = q[k];
mesh.regs[mesh.npolys] = cont.reg;
mesh.npolys++;
if (mesh.npolys > maxTris)
{
if (rcGetLog())
rcGetLog()->log(RC_LOG_ERROR, "rcBuildPolyMesh: Too many polygons %d (max:%d).", mesh.npolys, maxTris);
return false;
}
}
}