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Dynamically Drawing Text Strings

Demonstrates how to dynamically draw text strings relative to a given screen to world transform.

partial class Examples
{
  public static Result DrawString(RhinoDoc doc)
  {
    var gp = new GetDrawStringPoint();
    gp.SetCommandPrompt("Point");
    gp.Get();
    return gp.CommandResult();
  }
}

public class GetDrawStringPoint : GetPoint
{
  protected override void OnDynamicDraw(GetPointDrawEventArgs e)
  {
    base.OnDynamicDraw(e);
    var xform = e.Viewport.GetTransform(CoordinateSystem.World, CoordinateSystem.Screen);
    var current_point = e.CurrentPoint;
    current_point.Transform(xform);
    var screen_point = new Point2d(current_point.X, current_point.Y);
    var msg = string.Format("screen {0:F}, {1:F}", current_point.X, current_point.Y);
    e.Display.Draw2dText(msg, System.Drawing.Color.Blue, screen_point, false);
  }
}
Partial Friend Class Examples
  Public Shared Function DrawString(ByVal doc As RhinoDoc) As Result
	Dim gp = New GetDrawStringPoint()
	gp.SetCommandPrompt("Point")
	gp.Get()
	Return gp.CommandResult()
  End Function
End Class

Public Class GetDrawStringPoint
	Inherits GetPoint

  Protected Overrides Sub OnDynamicDraw(ByVal e As GetPointDrawEventArgs)
	MyBase.OnDynamicDraw(e)
	Dim xform = e.Viewport.GetTransform(CoordinateSystem.World, CoordinateSystem.Screen)
	Dim current_point = e.CurrentPoint
	current_point.Transform(xform)
	Dim screen_point = New Point2d(current_point.X, current_point.Y)
	Dim msg = String.Format("screen {0:F}, {1:F}", current_point.X, current_point.Y)
	e.Display.Draw2dText(msg, System.Drawing.Color.Blue, screen_point, False)
  End Sub
End Class
from Rhino import *
from Rhino.DocObjects import *
from Rhino.Geometry import *
from Rhino.Commands import *
from Rhino.Input.Custom import *
from System.Drawing import Color

def RunCommand():
  gp = GetDrawStringPoint()
  gp.SetCommandPrompt("Point")
  gp.Get()
  return gp.CommandResult()

class GetDrawStringPoint(GetPoint):
  def OnDynamicDraw(self, e):
    xform = e.Viewport.GetTransform(
      CoordinateSystem.World, CoordinateSystem.Screen)

    current_point = e.CurrentPoint
    current_point.Transform(xform)
    screen_point = Point2d(current_point.X, current_point.Y)

    msg = "screen {0}, {1}".format(screen_point.X, screen_point.Y)
    e.Display.Draw2dText(msg, Color.Blue, screen_point, False)

if __name__ == "__main__":
  RunCommand()