Accessing Grasshopper Tools From C# Custom Components

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Permalink Reply by David Rutten on February 23, 2017 at 2:54am

C# doesn't have a node-in-code api (yet) so you either have to:

1. Duplicate the functionality (which for point in curve isn't too difficult, it's a pretty straight up wrapper around the RhinoCommon method Curve.Contains().)
2. Create a new GH_Document, add the desired component, populate its inputs, run a solution, harvest the outputs.

Permalink Reply by Robert D. Vochescu on February 27, 2017 at 2:50pm

Hi David,

Thanks for answering, here my idea and the result:

m_Boundary = array of boundary curves;

m_Mesh = generic mesh;

m_NakedVertex = array of naked mesh edges;

m_Centroid = Point3d of centre of the connection;

for (int i = 0; i < m_Boundary.Count; i++)
{
{
for (int r = 0; r < m_NakedVertex.Length; r++)
{
if (m_NakedVertex[r] == true)
{
Point3d EndPoint = m_Mesh.Vertices[r];
if (m_Boundary[i].Contains(m_Mesh.Vertices[r]) == PointContainment.Inside || m_Boundary[i].Contains(m_Mesh.Vertices[r]) == PointContainment.Coincident)
{
Line line = new Line(m_Centroid, EndPoint);
m_Connections.Add(line);
}
}
}
}
}