public static Rhino.Commands.Result AddBackgroundBitmap(Rhino.RhinoDoc doc) { Rhino.RhinoApp.WriteLine ("hey"); // Allow the user to select a bitmap file Rhino.UI.OpenFileDialog fd = new Rhino.UI.OpenFileDialog(); fd.Filter = "Image Files (*.bmp;*.png;*.jpg)|*.bmp;*.png;*.jpg"; if (!fd.ShowDialog()) return Rhino.Commands.Result.Cancel; // Verify the file that was selected System.Drawing.Image image; try { image = System.Drawing.Image.FromFile(fd.FileName); } catch (Exception) { return Rhino.Commands.Result.Failure; } // Allow the user to pick the bitmap origin Rhino.Input.Custom.GetPoint gp = new Rhino.Input.Custom.GetPoint(); gp.SetCommandPrompt("Bitmap Origin"); gp.ConstrainToConstructionPlane(true); gp.Get(); if (gp.CommandResult() != Rhino.Commands.Result.Success) return gp.CommandResult(); // Get the view that the point was picked in. // This will be the view that the bitmap appears in. Rhino.Display.RhinoView view = gp.View(); if (view == null) { view = doc.Views.ActiveView; if (view == null) return Rhino.Commands.Result.Failure; } // Allow the user to specify the bitmap with in model units Rhino.Input.Custom.GetNumber gn = new Rhino.Input.Custom.GetNumber(); gn.SetCommandPrompt("Bitmap width"); gn.SetLowerLimit(1.0, false); gn.Get(); if (gn.CommandResult() != Rhino.Commands.Result.Success) return gn.CommandResult(); // Cook up some scale factors double w = gn.Number(); double image_width = image.Width; double image_height = image.Height; double h = w * (image_height / image_width); Rhino.Geometry.Plane plane = view.ActiveViewport.ConstructionPlane(); plane.Origin = gp.Point(); view.ActiveViewport.SetTraceImage(fd.FileName, plane, w, h, false, false); view.Redraw(); return Rhino.Commands.Result.Success; }