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shibing624
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edge.polyEdge[1] = 0xff;
// Insert edge
nextEdge[edgeCount] = firstEdge[v1];
firstEdge[v1] = (unsigned short)edgeCount;
edgeCount++;
}
}
}
}
// Mark portal edges.
for (int i = 0; i < lcset.nconts; ++i)
{
dtTileCacheContour& cont = lcset.conts[i];
if (cont.nverts < 3)
continue;
for (int j = 0, k = cont.nverts-1; j < cont.nverts; k=j++)
{
const unsigned char* va = &cont.verts[k*4];
const unsigned char* vb = &cont.verts[j*4];
const unsigned char dir = va[3] & 0xf;
if (dir == 0xf)
continue;
if (dir == 0 || dir == 2)
{
// Find matching vertical edge
const unsigned short x = (unsigned short)va[0];
unsigned short zmin = (unsigned short)va[2];
unsigned short zmax = (unsigned short)vb[2];
if (zmin > zmax)
dtSwap(zmin, zmax);
for (int m = 0; m < edgeCount; ++m)
{
rcEdge& e = edges[m];
// Skip connected edges.
if (e.poly[0] != e.poly[1])
continue;
const unsigned short* eva = &verts[e.vert[0]*3];
const unsigned short* evb = &verts[e.vert[1]*3];
if (eva[0] == x && evb[0] == x)
{
unsigned short ezmin = eva[2];
unsigned short ezmax = evb[2];
if (ezmin > ezmax)
dtSwap(ezmin, ezmax);
if (overlapRangeExl(zmin,zmax, ezmin, ezmax))
{
// Reuse the other polyedge to store dir.
e.polyEdge[1] = dir;
}
}
}
}
else
{
// Find matching vertical edge
const unsigned short z = (unsigned short)va[2];
unsigned short xmin = (unsigned short)va[0];
unsigned short xmax = (unsigned short)vb[0];
if (xmin > xmax)
dtSwap(xmin, xmax);
for (int m = 0; m < edgeCount; ++m)
{
rcEdge& e = edges[m];
// Skip connected edges.
if (e.poly[0] != e.poly[1])
continue;
const unsigned short* eva = &verts[e.vert[0]*3];
const unsigned short* evb = &verts[e.vert[1]*3];
if (eva[2] == z && evb[2] == z)
{
unsigned short exmin = eva[0];
unsigned short exmax = evb[0];
if (exmin > exmax)
dtSwap(exmin, exmax);
if (overlapRangeExl(xmin,xmax, exmin, exmax))
{
// Reuse the other polyedge to store dir.
e.polyEdge[1] = dir;
}
}
}
}
}
}
// Store adjacency
for (int i = 0; i < edgeCount; ++i)
{
const rcEdge& e = edges[i];
if (e.poly[0] != e.poly[1])
{
unsigned short* p0 = &polys[e.poly[0]*MAX_VERTS_PER_POLY*2];
unsigned short* p1 = &polys[e.poly[1]*MAX_VERTS_PER_POLY*2];
p0[MAX_VERTS_PER_POLY + e.polyEdge[0]] = e.poly[1];
p1[MAX_VERTS_PER_POLY + e.polyEdge[1]] = e.poly[0];