DrawLine

Graphics.DrawLine method (1 of 4)

Draws a line connecting two Point structures.

public void DrawLine(Pen pen, Point point1, Point point2)
Parameter Type Description
pen Pen Pen that determines the color, width, and style of the line.
point1 Point Point structure that represents the first point to connect.
point2 Point Point structure that represents the second point to connect.

Exceptions

exception condition
ArgumentNullException pen is null.

Examples

This example uses Graphics class to create primitive shapes on the Image surface. To demonstrate the operation, the example creates a new Image in PNG format and draw primitive shapes on Image surface using Draw methods exposed by Graphics class

[C#]

//Creates an instance of FileStream
using (System.IO.FileStream stream = new System.IO.FileStream(@"C:\temp\output.png", System.IO.FileMode.Create))
{
    //Create an instance of PngOptions and set its various properties
    Aspose.Imaging.ImageOptions.PngOptions pngOptions = new Aspose.Imaging.ImageOptions.PngOptions();

    //Set the Source for PngOptions
    pngOptions.Source = new Aspose.Imaging.Sources.StreamSource(stream);

    //Create an instance of Image 
    using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Create(pngOptions, 500, 500))
    {
        //Create and initialize an instance of Graphics class
        Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(image);

        //Clear Graphics surface
        graphics.Clear(Aspose.Imaging.Color.Wheat);

        //Draw an Arc by specifying the Pen object having Black color, 
        //a Rectangle surrounding the Arc, Start Angle and Sweep Angle
        graphics.DrawArc(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Black, 2), new Aspose.Imaging.Rectangle(200, 200, 100, 200), 0, 300);

        //Draw a Bezier by specifying the Pen object having Blue color and co-ordinate Points.
        graphics.DrawBezier(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Blue, 2), new Aspose.Imaging.Point(250, 100), new Aspose.Imaging.Point(300, 30), new Aspose.Imaging.Point(450, 100), new Aspose.Imaging.Point(235, 25));

        //Draw a Curve by specifying the Pen object having Green color and an array of Points
        graphics.DrawCurve(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Green, 2), new[] { new Aspose.Imaging.Point(100, 200), new Aspose.Imaging.Point(100, 350), new Aspose.Imaging.Point(200, 450) });

        //Draw an Ellipse using the Pen object and a surrounding Rectangle
        graphics.DrawEllipse(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Yellow, 2), new Aspose.Imaging.Rectangle(300, 300, 100, 100));

        //Draw a Line 
        graphics.DrawLine(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Violet, 2), new Aspose.Imaging.Point(100, 100), new Aspose.Imaging.Point(200, 200));

        //Draw a Pie segment
        graphics.DrawPie(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Silver, 2), new Aspose.Imaging.Rectangle(new Aspose.Imaging.Point(200, 20), new Aspose.Imaging.Size(200, 200)), 0, 45);

        //Draw a Polygon by specifying the Pen object having Red color and an array of Points
        graphics.DrawPolygon(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Red, 2), new[] { new Aspose.Imaging.Point(20, 100), new Aspose.Imaging.Point(20, 200), new Aspose.Imaging.Point(220, 20) });

        //Draw a Rectangle
        graphics.DrawRectangle(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Orange, 2), new Aspose.Imaging.Rectangle(new Aspose.Imaging.Point(250, 250), new Aspose.Imaging.Size(100, 100)));

        //Create a SolidBrush object and set its various properties
        Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush();
        brush.Color = Color.Purple;
        brush.Opacity = 100;

        //Draw a String using the SolidBrush object and Font, at specific Point
        graphics.DrawString("This image is created by Aspose.Imaging API", new Aspose.Imaging.Font("Times New Roman", 16), brush, new Aspose.Imaging.PointF(50, 400));

        // save all changes.
        image.Save();
    }
}

See Also


Graphics.DrawLine method (2 of 4)

Draws a line connecting two PointF structures.

public void DrawLine(Pen pen, PointF point1, PointF point2)
Parameter Type Description
pen Pen Pen that determines the color, width, and style of the line.
point1 PointF PointF structure that represents the first point to connect.
point2 PointF PointF structure that represents the second point to connect.

Exceptions

exception condition
ArgumentNullException pen is null.

See Also


Graphics.DrawLine method (3 of 4)

Draws a line connecting the two points specified by the coordinate pairs.

public void DrawLine(Pen pen, int x1, int y1, int x2, int y2)
Parameter Type Description
pen Pen Pen that determines the color, width, and style of the line.
x1 Int32 The x-coordinate of the first point.
y1 Int32 The y-coordinate of the first point.
x2 Int32 The x-coordinate of the second point.
y2 Int32 The y-coordinate of the second point.

Exceptions

exception condition
ArgumentNullException pen is null.

See Also


Graphics.DrawLine method (4 of 4)

Draws a line connecting the two points specified by the coordinate pairs.

public void DrawLine(Pen pen, float x1, float y1, float x2, float y2)
Parameter Type Description
pen Pen Pen that determines the color, width, and style of the line.
x1 Single The x-coordinate of the first point.
y1 Single The y-coordinate of the first point.
x2 Single The x-coordinate of the second point.
y2 Single The y-coordinate of the second point.

Exceptions

exception condition
ArgumentNullException pen is null.

See Also