Beispiel #1
0
        private void CreateViewportBorder(vtkRenderer renderer, double[] color)
        {
            ModelLoaded = false;

            // points start at upper right and proceed anti-clockwise
            vtkPoints points = vtkPoints.New();

            points.SetNumberOfPoints(4);
            points.InsertPoint(0, 1, 1, 0);
            points.InsertPoint(1, 1e-3, 1, 0);
            points.InsertPoint(2, 1e-3, 1e-3, 0);
            points.InsertPoint(3, 1, 1e-3, 0);

            // create cells, and lines
            vtkCellArray cells = vtkCellArray.New();

            cells.Initialize();

            vtkPolyLine lines = vtkPolyLine.New();

            lines.GetPointIds().SetNumberOfIds(5);
            for (int i = 0; i < 4; ++i)
            {
                lines.GetPointIds().SetId(i, i);
            }
            lines.GetPointIds().SetId(4, 0);
            cells.InsertNextCell(lines);

            // now make tge polydata and display it
            vtkPolyData poly = vtkPolyData.New();

            poly.Initialize();
            poly.SetPoints(points);
            poly.SetLines(cells);

            // use normalized viewport coordinates since
            // they are independent of window size
            vtkCoordinate coordinate = vtkCoordinate.New();

            coordinate.SetCoordinateSystemToNormalizedViewport();

            vtkPolyDataMapper2D mapper = vtkPolyDataMapper2D.New();

            mapper.SetInput(poly);
            mapper.SetTransformCoordinate(coordinate);

            vtkActor2D actor = vtkActor2D.New();

            actor.SetMapper(mapper);
            actor.GetProperty().SetColor(color[0], color[1], color[2]);
            // line width should be at least 2 to be visible at extremes

            actor.GetProperty().SetLineWidth((float)2.0); // Line Width

            renderer.AddViewProp(actor);
        }