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shibing624
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source_code

Dataset card Data Studio Files Community
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2.2M
dtSwap(a,b);
// Check if the edge exists
bool exists = false;
for (int m = 0; m < nedges; ++m)
{
unsigned short* e = &edges[m*3];
if (e[1] == b)
{
// Exists, increment vertex share count.
e[2]++;
exists = true;
}
}
// Add new edge.
if (!exists)
{
unsigned short* e = &edges[nedges*3];
e[0] = (unsigned short)a;
e[1] = (unsigned short)b;
e[2] = 1;
nedges++;
}
}
}
}
// There should be no more than 2 open edges.
// This catches the case that two non-adjacent polygons
// share the removed vertex. In that case, do not remove the vertex.
int numOpenEdges = 0;
for (int i = 0; i < nedges; ++i)
{
if (edges[i*3+2] < 2)
numOpenEdges++;
}
if (numOpenEdges > 2)
return false;
return true;
}
static dtStatus removeVertex(dtTileCachePolyMesh& mesh, const unsigned short rem, const int maxTris)
{
// Count number of polygons to remove.
int numRemovedVerts = 0;
for (int i = 0; i < mesh.npolys; ++i)
{
unsigned short* p = &mesh.polys[i*MAX_VERTS_PER_POLY*2];
const int nv = countPolyVerts(p);
for (int j = 0; j < nv; ++j)
{
if (p[j] == rem)
numRemovedVerts++;
}
}
int nedges = 0;
unsigned short edges[MAX_REM_EDGES*3];
int nhole = 0;
unsigned short hole[MAX_REM_EDGES];
int nharea = 0;
unsigned short harea[MAX_REM_EDGES];
for (int i = 0; i < mesh.npolys; ++i)
{
unsigned short* p = &mesh.polys[i*MAX_VERTS_PER_POLY*2];
const int nv = countPolyVerts(p);
bool hasRem = false;
for (int j = 0; j < nv; ++j)
if (p[j] == rem) hasRem = true;
if (hasRem)
{
// Collect edges which does not touch the removed vertex.
for (int j = 0, k = nv-1; j < nv; k = j++)
{
if (p[j] != rem && p[k] != rem)
{
if (nedges >= MAX_REM_EDGES)
return DT_FAILURE | DT_BUFFER_TOO_SMALL;
unsigned short* e = &edges[nedges*3];
e[0] = p[k];
e[1] = p[j];
e[2] = mesh.areas[i];
nedges++;
}
}
// Remove the polygon.
unsigned short* p2 = &mesh.polys[(mesh.npolys-1)*MAX_VERTS_PER_POLY*2];
memcpy(p,p2,sizeof(unsigned short)*MAX_VERTS_PER_POLY);
memset(p+MAX_VERTS_PER_POLY,0xff,sizeof(unsigned short)*MAX_VERTS_PER_POLY);
mesh.areas[i] = mesh.areas[mesh.npolys-1];
mesh.npolys--;
--i;
}
}
// Remove vertex.
for (int i = (int)rem; i < mesh.nverts; ++i)
{