Create Lines
Create Objects
Create Point Objects
You can create a variety of curved objects with AutoCAD, including spline curves, circles, arcs, and ellipses. All curves are created on the XY plane of the current WCS.
To create a curve, use one of the following methods:
This example creates a spline in model space using three points (0, 0, 0), (5, 5, 0), and (10, 0, 0). The spline has start and end tangents of (0.5, 0.5, 0.0).
Sub Ch4_CreateSpline()
' This example creates a spline object in model space.
' Declare the variables needed
Dim splineObj As AcadSpline
Dim startTan(0 To 2) As Double
Dim endTan(0 To 2) As Double
Dim fitPoints(0 To 8) As Double
' Define the variables
startTan(0) = 0.5: startTan(1) = 0.5: startTan(2) = 0
endTan(0) = 0.5: endTan(1) = 0.5: endTan(2) = 0
fitPoints(0) = 1: fitPoints(1) = 1: fitPoints(2) = 0
fitPoints(3) = 5: fitPoints(4) = 5: fitPoints(5) = 0
fitPoints(6) = 10: fitPoints(7) = 0: fitPoints(8) = 0
' Create the spline
Set splineObj = ThisDrawing.ModelSpace.AddSpline _
(fitPoints, startTan, endTan)
ZoomAll
End Sub
For more information about splines, see the Spline object and AddSpline method documentation in the AutoCAD ActiveX and VBA Reference.