C# double precision problem

Grasshopper Developer
1

I have a problem with precision of mesh vertices. When i check the coordinates in grasshopper it has many decimals but when i check the result in my C# component it somehow rounds the coordinates.
The same happens with the end nodes of lines.
image

image

2

How close is good enough?

3

Due to some legacy reasons the vertices default to displaying their positions in floats. You can look at the locations in double precision by calling Point3dAt function

https://developer.rhino3d.com/api/RhinoCommon/html/M_Rhino_Geometry_Collections_MeshVertexList_Point3dAt.htm

4

Thank you very much, this put me on the right track.
Another think that was necessary in my case was to change the line

V.AddVertices(M.Vertices);

to

V.AddVertices(M.Vertices.ToPoint3dArray());

So my MeshVertexList V saved points as Point3d instead of Point3f in the first place.

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