# How to Draw Figures in PDF documents

## Environment

| Version    | Product          | Author                                                                          |
| ---------- | ---------------- | ------------------------------------------------------------------------------- |
| 2024.1.124 | RadPdfProcessing | [Desislava Yordanova](https://www.telerik.com/blogs/author/desislava-yordanova) |

## Description

This article demonstrates how to draw a small figure containing an arc and lines using RadPdfProcessing.

## Solution

To draw an arc using the [ArcSegment](https://www.telerik.com/document-processing-libraries/documentation/libraries/radpdfprocessing/concepts/geometry) class, follow these steps:

1. Create a `Path` object and set its `IsFilled` and `IsStroked` properties to `true`.
2. Create a `PathGeometry` object and set its `FillRule` property to `FillRule.EvenOdd`.
3. Add a `PathFigure` to the `PathGeometry` and set its `StartPoint` property to the starting point of the figure.
4. Create an instance of the `ArcSegment` class and set its `Point`, `RadiusX`, and `RadiusY` properties. The `Point` property represents the endpoint of the arc, while `RadiusX` and `RadiusY` represent the radii for the X and Y coordinates respectively.
5. Add the `ArcSegment` to the `Segments` collection of the `PathFigure`.
6. Set the `Geometry` property of the `Path` to the `PathGeometry`.

Here is an example of how to draw an arc:

```csharp
private static void AddArcSegment(RadFixedPage page)
{
    Telerik.Windows.Documents.Fixed.Model.Graphics.Path path = page.Content.AddPath();
    path.IsFilled = true;
    path.IsStroked = true;

    PathGeometry pathGeometry = new PathGeometry();
    pathGeometry.FillRule = FillRule.EvenOdd;

    PathFigure figure = pathGeometry.Figures.AddPathFigure();
    figure.StartPoint = new Point(100, 200);

    var segment = new ArcSegment()
    {
        Point = new Point(200, 300),
        RadiusX = 20,
        RadiusY = 50,
    };

    figure.Segments.Add(segment);

    path.Geometry = pathGeometry;
}
```

To draw lines, use the [LineSegment](https://www.telerik.com/document-processing-libraries/documentation/libraries/radpdfprocessing/concepts/geometry) class. The following example draws a triangle:

```csharp
private void AddLineSegment(RadFixedPage page)
{
    Telerik.Windows.Documents.Fixed.Model.Graphics.Path path = page.Content.AddPath();
    path.IsFilled = false;
    path.IsStroked = true;

    PathGeometry pathGeometry = new PathGeometry();
    pathGeometry.FillRule = FillRule.EvenOdd;

    PathFigure figure1 = pathGeometry.Figures.AddPathFigure();
    ApplyLine(figure1, new Point(300, 200), new Point(400, 200));

    PathFigure figure2 = pathGeometry.Figures.AddPathFigure();
    ApplyLine(figure2, new Point(400, 200), new Point(250, 100));

    PathFigure figure3 = pathGeometry.Figures.AddPathFigure();
    ApplyLine(figure3, new Point(250, 100), new Point(300, 200));

    path.Geometry = pathGeometry;
}

private static void ApplyLine(PathFigure figure, Point startPoint, Point endPoint)
{
    figure.StartPoint = startPoint;

    var segment = new LineSegment
    {
        Point = endPoint
    };

    figure.Segments.Add(segment);
}
```

The following code snippet shows how to use the above methods to produce a PDF document:

```csharp

   RadFixedDocument fixedDocument = new RadFixedDocument();
   RadFixedPage fixedPage = fixedDocument.Pages.AddPage();
   AddArcSegment(fixedPage);
   AddLineSegment(fixedPage);

   PdfFormatProvider provider = new PdfFormatProvider();
   string filePath = @"..\..\output.pdf";
   File.Delete(filePath);
   using (Stream output = File.OpenWrite(filePath))
   { 
       provider.Export(fixedDocument, output);
   }

```

For more information on geometries, figures, and segments, refer to the [Geometry](https://www.telerik.com/document-processing-libraries/documentation/libraries/radpdfprocessing/concepts/geometry) article.

The following screenshot shows the result of the combined arc and triangle:

![Draw figures result showing an arc and triangle](https://www.telerik.com/document-processing-libraries/documentation/assets/2fc24e52f7818bd2d347ea8c0d711abc/pdf-processing-draw-figures.png)

## See Also

* [Geometry](https://www.telerik.com/document-processing-libraries/documentation/libraries/radpdfprocessing/concepts/geometry)
* [RadPdfProcessing Overview](https://www.telerik.com/document-processing-libraries/documentation/libraries/radpdfprocessing/overview)