GetPoint.DrawLineFromPoint Method

GetPointDrawLineFromPoint Method

Use DrawLineFromPoint() if you want a dynamic line drawn from a point to the point being picked.

Namespace:  Rhino.Input.Custom
Assembly:  RhinoCommon (in RhinoCommon.dll)
Syntax
Copy
public void DrawLineFromPoint(
	Point3d startPoint,
	bool showDistanceInStatusBar
)
Public Sub DrawLineFromPoint ( 
	startPoint As Point3d,
	showDistanceInStatusBar As Boolean
)

Parameters

startPoint
Type: Rhino.GeometryPoint3d
The line is drawn from startPoint to the point being picked. If the base point has not been set, then it is set to startPoint.
showDistanceInStatusBar
Type: SystemBoolean
if true, the distance from the basePoint to the point begin picked is shown in the status bar.
Remarks
Calling DrawLineFromPoint automatically enables drawing the line. Use EnableDrawLineFromPoint() to toggle the line drawing state.
Examples
Copy
using System;

partial class Examples
{
  public static Rhino.Commands.Result AddLine(Rhino.RhinoDoc doc)
  {
    Rhino.Input.Custom.GetPoint gp = new Rhino.Input.Custom.GetPoint();
    gp.SetCommandPrompt("Start of line");
    gp.Get();
    if (gp.CommandResult() != Rhino.Commands.Result.Success)
      return gp.CommandResult();

    Rhino.Geometry.Point3d pt_start = gp.Point();

    gp.SetCommandPrompt("End of line");
    gp.SetBasePoint(pt_start, false);
    gp.DrawLineFromPoint(pt_start, true);
    gp.Get();
    if (gp.CommandResult() != Rhino.Commands.Result.Success)
      return gp.CommandResult();

    Rhino.Geometry.Point3d pt_end = gp.Point();
    Rhino.Geometry.Vector3d v = pt_end - pt_start;
    if (v.IsTiny(Rhino.RhinoMath.ZeroTolerance))
      return Rhino.Commands.Result.Nothing;

    if (doc.Objects.AddLine(pt_start, pt_end) != Guid.Empty)
    {
      doc.Views.Redraw();
      return Rhino.Commands.Result.Success;
    }
    return Rhino.Commands.Result.Failure;
  }
}
Partial Class Examples
  Public Shared Function AddLine(ByVal doc As Rhino.RhinoDoc) As Rhino.Commands.Result
    Dim gp As New Rhino.Input.Custom.GetPoint()
    gp.SetCommandPrompt("Start of line")
    gp.Get()
    If gp.CommandResult() <> Rhino.Commands.Result.Success Then
      Return gp.CommandResult()
    End If

    Dim pt_start As Rhino.Geometry.Point3d = gp.Point()

    gp.SetCommandPrompt("End of line")
    gp.SetBasePoint(pt_start, False)
    gp.DrawLineFromPoint(pt_start, True)
    gp.Get()
    If gp.CommandResult() <> Rhino.Commands.Result.Success Then
      Return gp.CommandResult()
    End If

    Dim pt_end As Rhino.Geometry.Point3d = gp.Point()
    Dim v As Rhino.Geometry.Vector3d = pt_end - pt_start
    If v.IsTiny(Rhino.RhinoMath.ZeroTolerance) Then
      Return Rhino.Commands.Result.[Nothing]
    End If

    If doc.Objects.AddLine(pt_start, pt_end) <> Guid.Empty Then
      doc.Views.Redraw()
      Return Rhino.Commands.Result.Success
    End If
    Return Rhino.Commands.Result.Failure
  End Function
End Class
Python
Copy
import Rhino
import scriptcontext
import System.Guid

def AddLine():
    gp = Rhino.Input.Custom.GetPoint()
    gp.SetCommandPrompt("Start of line")
    gp.Get()
    if gp.CommandResult()!=Rhino.Commands.Result.Success:
        return gp.CommandResult()
    pt_start = gp.Point()

    gp.SetCommandPrompt("End of line")
    gp.SetBasePoint(pt_start, False)
    gp.DrawLineFromPoint(pt_start, True)
    gp.Get()
    if gp.CommandResult() != Rhino.Commands.Result.Success:
        return gp.CommandResult()
    pt_end = gp.Point()
    v = pt_end - pt_start
    if v.IsTiny(Rhino.RhinoMath.ZeroTolerance):
        return Rhino.Commands.Result.Nothing

    id = scriptcontext.doc.Objects.AddLine(pt_start, pt_end)
    if id!=System.Guid.Empty:
        scriptcontext.doc.Views.Redraw()
        return Rhino.Commands.Result.Success
    return Rhino.Commands.Result.Failure

if __name__=="__main__":
    AddLine()
Version Information

Rhino for Mac

Supported in: 5.4

Rhino for Windows

Supported in: 6.14
See Also

M:Rhino.Input.Custom.GetPoint.DrawLineFromPoint(Rhino.Geometry.Point3d,System.Boolean)