CurveIntersection Problem in C#

Hi David:

I have tried these codes in C#:

private void RunScript(Curve x, Curve y, ref object A) { Rhino.Geometry.Intersect.CurveIntersections ci; ci = Rhino.Geometry.Intersect.Intersection.CurveCurve(x, y, 0.001, 0.001); A = ci.Item[0].PointA; }

Got the Error:

'Rhino.Geometry.Intersect.CurveIntersection' does not contain a definition for 'Item'

But in VB.Net:

Private Sub RunScript(ByVal x As Curve, ByVal y As Curve, ByRef A As Object)

Dim ci As Rhino.Geometry.Intersect.CurveIntersections ci = Rhino.Geometry.Intersect.Intersection.CurveCurve(x, y, 0.001, 0.001) A = ci.Item(0).PointA End Sub

It works well!

Why? Is C# an incomplete version?

Thank you for your time!

Replies to This Discussion

Permalink Reply by Giulio Piacentino on October 14, 2010 at 1:46am

Hi Jilin,

RhinoCommon is written in C#, so that version is complete. (Just as the Vb.Net access to it should be.) Item() is another name to the main property of a class:

C#
A = c[0].PointA;

Vb.NET
A = c(0).PointA

...should work. This is shown here.

- Giulio
_____________________
giulio@mcneel.com
McNeel Europe, Barcelona

Permalink Reply by Jilin Chen on October 14, 2010 at 2:07am

Oh! Thanks a lot! This really confused me for a long time! I should read the SDK carefully!

Permalink Reply by Evert Amador on October 14, 2010 at 7:02am

Hi Giulio, If there were more intersection between the curves, is there a simpler way to do this:

ci = Rhino.Geometry.Intersect.Intersection.CurveCurve(x, y, 0.001, 0.001);

Rhino.Geometry.Point3d[] intPts = new Rhino.Geometry.Point3d[ci.Count];

for (int i = 0; i < ci.Count; i++)
{
intPts[i] = ci[i].PointA;
}

A = intPts;>

Cheers, Evert

PS the > at the end comes from the formating thing in the forum.
BTW how do you enter code in these posts?

Permalink Reply by Evert Amador on October 14, 2010 at 8:09am

I've just noticed the formatting thing got rid of my first line of code!

Rhino.Geometry.Intersect.CurveIntersections ci;

Permalink Reply by Giulio Piacentino on October 14, 2010 at 8:42am

Hi Evert,

the only thing I can see to shorten the code is to remove the curly brackets {},
that's ok for a single statement. :)

for (int i = 0; i < ci.Count; i++)

  intPts[i] = ci[i].PointA;

About formatting: you can use HTML character references to put special chars. For example, > will appear as >.

You can have a code block with <code> ... </code>:this is how it will appear.

I hope it helps,

- Giulio
_____________________
giulio@mcneel.com
McNeel Europe, Barcelona

Permalink Reply by Evert Amador on October 14, 2010 at 8:49am

Hi Giulio, Thanks.

Testing!

Permalink Reply by Andrea Lu on December 4, 2011 at 4:19pm