private void ExtractSquare(int r, Int16Triple p, MeshBuilder_IntegerVertex mb)
{
int p0x, p0y, p0z, p1x, p1y, p1z, p2x, p2y, p2z;//
Int16Triple deltaA0 = VertexIndexToPositionDelta[AdjIndexToVertexIndices[r][0].X];
Int16Triple deltaA1 = VertexIndexToPositionDelta[AdjIndexToVertexIndices[r][0].Y];
Int16Triple deltaA2 = VertexIndexToPositionDelta[AdjIndexToVertexIndices[r][0].Z];
p0x = p.X + deltaA0.X;
p0y = p.Y + deltaA0.Y;
p0z = p.Z + deltaA0.Z;
p1x = p.X + deltaA1.X;
p1y = p.Y + deltaA1.Y;
p1z = p.Z + deltaA1.Z;
p2x = p.X + deltaA2.X;
p2y = p.Y + deltaA2.Y;
p2z = p.Z + deltaA2.Z;
mb.AddTriangle(new Int16Triple(p0x, p0y, p0z), new Int16Triple(p1x, p1y, p1z), new Int16Triple(p2x, p2y, p2z));
Int16Triple deltaB0 = VertexIndexToPositionDelta[AdjIndexToVertexIndices[r][1].X];
Int16Triple deltaB1 = VertexIndexToPositionDelta[AdjIndexToVertexIndices[r][1].Y];
Int16Triple deltaB2 = VertexIndexToPositionDelta[AdjIndexToVertexIndices[r][1].Z];
p0x = p.X + deltaB0.X;
p0y = p.Y + deltaB0.Y;
p0z = p.Z + deltaB0.Z;
p1x = p.X + deltaB1.X;
p1y = p.Y + deltaB1.Y;
p1z = p.Z + deltaB1.Z;
p2x = p.X + deltaB2.X;
p2y = p.Y + deltaB2.Y;
p2z = p.Z + deltaB2.Z;
mb.AddTriangle(new Int16Triple(p0x, p0y, p0z), new Int16Triple(p1x, p1y, p1z), new Int16Triple(p2x, p2y, p2z));
}
public Mesh GeneratorSurface()
{
int Width = bmp.width;
int Height = bmp.height;
int Depth = bmp.depth;
Int16Triple[] adjPoints6 = new Int16Triple[6];
MeshBuilder_IntegerVertex mb = new MeshBuilder_IntegerVertex(bmp.width, bmp.height, bmp.depth);
for (int k = 0; k <= Depth - 1; k++)
{
for (int j = 0; j <= Height - 1; j++)
{
for (int i = 0; i <= Width - 1; i++)
{
if (IsInside(i, j, k))
{
Int16Triple p = new Int16Triple(i, j, k);
InitAdj6(adjPoints6, p);
for (int r = 0; r < adjPoints6.Length; r++)
{
Int16Triple t = adjPoints6[r];
if (!IsInside(t.X, t.Y, t.Z))
{
ExtractSquare(r, p, mb);
}
}
}
}
}
}
Mesh m = mb.GetMesh();
for (int i = 0; i < m.Vertices.Count; i++)
{
Point3d p = m.Vertices[i];
p.X -= 0.5f;
p.Y -= 0.5f;
p.Z -= 0.5f;
}//若需要真实位置，则都得平移回去
return(m);
}