The following derived class gets the vertex closest to the mouse and adds a Point entity on its position when clicking with the right mouse button.
It manages nested BlockReferences, standard Entities, and the more complex Solid and Brep entities.
internal class MyDesign : devDept.Eyeshot.Control.Design
{
protected override void OnMouseUp(MouseEventArgs e)
{
if (ActionMode == actionType.None && e.Button == MouseButtons.Right)
{
HitVertex hv;
int entID = FindClosestVertex(e.Location, 10, out hv);
if (entID < 0)
return;
if (hv.Parents != null)
{
for (int i = 0; i < hv.Parents.Count; i++)
{
// Set as current all the parents, so I can use the BlockReference.AccumulatedParentsTransform to transform the vertex
SetCurrent(hv.Parents[i]);
}
}
Entity ent;
if (CurrentBlockReference == null)
{
ent = Entities[entID];
}
else
{
// Get the Block entities
ent = Blocks[CurrentBlockReference.BlockName].Entities[hv.EntityIndex];
}
Point3D pt;
if (ent is Solid)
{
var sol = (Solid)ent;
// Retrieve the vertex from the proper Solid portion
pt = sol.Portions[hv.FaceIndex].Vertices[hv.VertexIndex];
}
else if (ent is Brep)
{
var sol = (Brep)ent;
// retrieve the vertex from the proper Solid3D face and tesselation index
if (hv.ShellOrElementIndex == 0)
{
pt = sol.Faces[hv.FaceIndex].Tessellation.GetPoints()[hv.VertexIndex];
}
else
pt =
sol.Inners[hv.ShellOrElementIndex - 1][hv.FaceIndex].Tessellation.GetPoints()[hv.VertexIndex];
}
else
{
pt = ent.Vertices[hv.VertexIndex];
}
if (CurrentBlockReference != null)
{
// Transform the point by the accumulated BlockReference transformation to get the final world position
pt = CurrentBlockReference.AccumulatedParentsTransform * pt;
}
if (hv.Parents != null)
for (int i = 0; i < hv.Parents.Count; i++)
{
// Go back to the original parent
SetParentAsCurrent();
}
if (pt != null)
{
Entities.Add(new devDept.Eyeshot.Entities.Point(pt, 10), Color.Red);
Invalidate();
}
}
base.OnMouseUp(e);
}
}
Previous versions of this article: Eyeshot 9
Comments
>pt = sol.Faces[hv.FaceIndex].Tessellation[hv.TessellationIndex].Vertices[hv.VertexIndex];
There is no TessellationIndex in the properties of the HitVertex class. (version 12.0.351.0)
Is the version difference?I replaced it with a ParamSurfaceIndex, and it seems to be working properly.
Article updated. Thanks for reporting it.
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