Get cell on Gridded Surface

[anhtrung]

Hi everybody,

I have a question that is i want to get cells on gridded surface, i get show gridded in display surface and get all it.

I'm using by C.#.

Thanks so much

[Jeff_M]

Is this what you are looking for? From the help file:

[anhtrung]

i don't find cells on type gridsurface, i mean that is show gridded on tinsurface, and get cells from it.

[Jeff_M · Accepted solution]

OK, you have TinSurface displaying the Gridded. The only thing I see is to use the ExtractGridded() method to extract the grid cells. There is an example of this in the help:

// Extract a grid from the surface and print information about it:
// 
ObjectIdCollection gridlines;
gridlines = surface.ExtractGridded(SurfaceExtractionSettingsType.Plan);

write("# of extracted grid lines extracted: " + gridlines.Count + "\n");1int i = 1;
foreach (ObjectId gridLineId in gridlines)
{
    // Gridlines are polyline3d objects
    Polyline3d gridline = gridLineId.GetObject(OpenMode.ForRead) as Polyline3d;
    write(String.Format(" Gridline #{0}: Length:{1}  Start:{2}  End:{3}\n",
        i, gridline.Length, gridline.StartPoint.ToString(), gridline.EndPoint.ToString()));
    i++;
}

[anhtrung]

i want to get cell and create polyline from cell. Can you help me how to do that ?

[Jeff_M]

I'm not sure I can help any further. Using the ExtractGridded() returns 3dPoly's that run horizontally and vertically between the edges of the surface. There are no vertices present for where they intersect one another, instead having vertices at the intersection with the TIN lines. It will take far more time than I have available to create the tools needed to create the cell boundaries. And what to do at the non-square edge cells? Sorry, and good luck!

[anhtrung]

 Thanks for your support to me, i think i will another way, because i want to get volume by polygon follow gridded on surface.