Drawing Graphics

Adding graphics enhances the appearance of a document and make them visually appealing. You can add various types of shapes in your documents such as, Arc, Beizer, Ellipse, Line, Pie, polygon, PolygonLine, and Rectangle. Use the following code to add graphics such as pie, rectangles, polyline, and beziers along with the text:

Dim rtf = New C1WordDocument()
' set up to draw
Dim rc As New Rect(100, 100, 300, 200)
Dim text As String = "Hello world of .NET Graphics and Word/RTF." & vbCr & vbLf & "Nice to meet you."
Dim font As New Font("Times New Roman", 12, RtfFontStyle.Italic Or RtfFontStyle.Underline)
' draw to pdf document
Dim penWidth As Integer = 0
Dim penRGB As Byte = 0
rtf.FillPie(Colors.Red, rc, 0, 20F)
rtf.FillPie(Colors.Green, rc, 20F, 30F)
rtf.FillPie(Colors.Blue, rc, 60F, 12F)
rtf.FillPie(Colors.Orange, rc, -80F, -20F)
For startAngle As Single = 0 To 359 Step 40
        Dim penColor As Color = Color.FromArgb(&Hff, penRGB, penRGB, penRGB)
        Dim pen As New Pen(penColor, System.Math.Max(System.Threading.Interlocked.Increment(penWidth),penWidth - 1))
        penRGB = CByte(penRGB + 20)
        rtf.DrawArc(pen, rc, startAngle, 40F)
Next
rtf.DrawRectangle(Colors.Red, rc)
rtf.DrawString(text, font, Colors.Black, rc)
' show a Bezier curve
Dim pts = New Point() {New Point(400, 200), New Point(420, 130), New Point(500, 240), New Point(530, 120)}
' draw Bezier 
rtf.DrawBeziers(New Pen(Colors.Blue, 4), pts)
' show Bezier control points
rtf.DrawPolyline(Colors.Gray, pts)
For Each pt As Point In pts
        rtf.FillRectangle(Colors.Red, pt.X - 2, pt.Y - 2, 4, 4)
Next
' title
rtf.DrawString("Simple Bezier", font, Colors.Black, New Rect(500, 150, 100, 100))

var rtf = new C1WordDocument();
// set up to draw
Rect rc = new Rect(100, 100, 300, 200);
string text = "Hello world of .NET Graphics and Word/RTF.\r\nNice to meet you.";
Font font = new Font("Times New Roman", 12, RtfFontStyle.Italic | RtfFontStyle.Underline);
// draw to pdf document
int penWidth = 0;
byte penRGB = 0;
rtf.FillPie(Colors.Red, rc, 0, 20f);
rtf.FillPie(Colors.Green, rc, 20f, 30f);
rtf.FillPie(Colors.Blue, rc, 60f, 12f);
rtf.FillPie(Colors.Orange, rc, -80f, -20f);
for (float startAngle = 0; startAngle < 360; startAngle += 40)
{
     Color penColor = Color.FromArgb(0xff, penRGB, penRGB, penRGB);
     Pen pen = new Pen(penColor, penWidth++);
     penRGB = (byte)(penRGB + 20);
     rtf.DrawArc(pen, rc, startAngle, 40f);
}
rtf.DrawRectangle(Colors.Red, rc);
rtf.DrawString(text, font, Colors.Black, rc);
// show a Bezier curve
var pts = new Point[]
{
      new Point(400, 200), new Point(420, 130),
      new Point(500, 240), new Point(530, 120),
};
// draw Bezier 
rtf.DrawBeziers(new Pen(Colors.Blue, 4), pts);
// show Bezier control points
rtf.DrawPolyline(Colors.Gray, pts);
foreach (Point pt in pts)
{
    rtf.FillRectangle(Colors.Red, pt.X - 2, pt.Y - 2, 4, 4);
}
// title
rtf.DrawString("Simple Bezier", font, Colors.Black, new Rect(500, 150, 100, 100));

In the above code, DrawRectangle, DrawArc, DrawPolyline, and DrawBeziers methods are used to draw graphics of different types such as, line, rectangle, pie, and bezier. Besides, DrawString method is used to draw and show text in the document.

The output of the above code will look similar to the image given below: