How to create contour of a surface from draft angle of point its location is on high Gaussian curvature region i write the script like this but it did not work please help any one

Option Explicit

'Surfcae curvature analysis  at a point

Sub SurfaceCurvature
	Const rhObjectSurface = 8
	Dim strObject, arrPoint, arrParam, arrData, pt

	strObject = Rhino.GetObject("Select a surface", rhObjectSurface)

	If Rhino.IsSurface(strObject) Then

		arrPoint = Rhino.GetPointOnSurface(strObject, "Pick a test point")

		If IsArray(arrPoint) Then

			arrParam = Rhino.SurfaceClosestPoint(strObject, arrPoint)

			If IsArray(arrParam) Then

				arrData = Rhino.SurfaceCurvature(strObject, arrParam)
				If IsArray(arrParam) Then
					pt = Rhino.SurfaceDraftAnglePoint(strObject, arrParam)
					If IsArray(pt)Then Call Rhino.AddPoint(pt)

					If IsArray(arrData) Then

					Rhino.Print "Surface curvature evaluation at parameter (" & CStr(arrParam(0)) & ", " & CStr(arrParam(1)) & "):"

					Rhino.Print "  3-D Point: (" & Rhino.Pt2Str(arrData(0)) & ")"

					Rhino.Print "  3-D Normal: (" & Rhino.Pt2Str(arrData(1)) & ")"

					Rhino.Print "  Maximum principal curvature: " & CStr(arrData(2)) & " (" & Rhino.Pt2Str(arrData(3)) & ")"

					Rhino.Print "  Minimum principal curvature: " & CStr(arrData(4)) & " (" & Rhino.Pt2Str(arrData(5)) & ")"

					Rhino.Print "  Gaussian curvature: " & CStr(arrData(6))

						Rhino.Print "  Mean curvature: " & CStr(arrData(7))
					End If
				End If

			End If 

		End If

	End If
End Sub

'Surface contouring depending on the draft angle

Sub SurfaceDraftAnglePoint(strObject, arrData)
	Dim contourDst
	contourDst = 2 * pt * Rhino.ToRadians(dblDegrees, Angle) * sqr(2 * arrData(6) * 0.1 - 0.01)

	arrContours = Rhino.SurfaceContourPoints(strObject, contourDst)

	If IsArray(arrContours) Then

		For Each arrPoints In arrContours

			Rhino.AddPointCloud arrPoints


	End If
End Sub

Hi @GHumera,

I am not sure I understand what you want to do and why. Can you explain further what problem you are trying to solve? Do have a sample model you can share?

– Dale

Sir, i have 3D surface model attached below and i need to create contour of
this model based on the draft angle of the surface model.

Thank you in advance

Hi GHumera - can you attach your model again? It looks like nothing is attached to your post.


Hi, sir this is my model

Hi @GHumera,

To post a model, just poke the upload button…


– Dale