/// <summary>
/// 获取网格顶点
/// </summary>
public void GetNodes(out long[] nodeTags, out double[] coord, out double[] parametricCoord, int dim = -1, int tag = -1, bool includeBoundary = false, bool returnParametricCoord = true)
{
IntPtr api_nodeTagsPtr = IntPtr.Zero;
IntPtr api_coordPtr = IntPtr.Zero;
IntPtr api_parametricCoordPtr = IntPtr.Zero;
ulong api_nodeTags_n = 0;
ulong api_coord_n = 0;
ulong api_parametricCoord_n = 0;
GMshNativeMethods.gmshModelMeshGetNodes(ref api_nodeTagsPtr, ref api_nodeTags_n, ref api_coordPtr, ref api_coord_n, ref api_parametricCoordPtr, ref api_parametricCoord_n, dim, tag, includeBoundary.Toint(), returnParametricCoord.Toint(), ref ierr);
if (ierr != 0)
{
throw new GMshException(ierr);
}
nodeTags = new long[api_nodeTags_n];
coord = new double[api_coord_n];
parametricCoord = new double[api_parametricCoord_n];
if (api_nodeTags_n != 0)
{
Marshal.Copy(api_nodeTagsPtr, nodeTags, 0, api_nodeTags_n.Toint());
}
if (api_coord_n != 0)
{
Marshal.Copy(api_coordPtr, coord, 0, api_coord_n.Toint());
}
if (api_coord_n != 0)
{
Marshal.Copy(api_parametricCoordPtr, parametricCoord, 0, api_parametricCoord_n.Toint());
}
api_nodeTagsPtr.GmshFree();
api_coordPtr.GmshFree();
api_parametricCoordPtr.GmshFree();
}