Graphics.DrawCurve

DrawCurve(Pen, PointF[])

Draws a cardinal spline through a specified array of PointF structures. This method uses a default tension of 0.5.

public void DrawCurve(Pen pen, PointF[] points)

Parameter	Type	Description
pen	Pen	Pen that determines the color, width, and height of the curve.
points	PointF[]	Array of PointF structures that define the spline.

Exceptions

exception	condition
ArgumentNullException	pen is null. -or- points is null.

See Also

• class Pen
• struct PointF
• class Graphics
• namespace Aspose.Imaging
• assembly Aspose.Imaging

---

DrawCurve(Pen, PointF[], float)

Draws a cardinal spline through a specified array of PointF structures using a specified tension.

public void DrawCurve(Pen pen, PointF[] points, float tension)

Parameter	Type	Description
pen	Pen	Pen that determines the color, width, and height of the curve.
points	PointF[]	Array of PointF structures that represent the points that define the curve.
tension	Single	Value greater than or equal to 0.0F that specifies the tension of the curve.

Exceptions

exception	condition
ArgumentNullException	pen is null. -or- points is null.

See Also

• class Pen
• struct PointF
• class Graphics
• namespace Aspose.Imaging
• assembly Aspose.Imaging

---

DrawCurve(Pen, PointF[], int, int)

Draws a cardinal spline through a specified array of PointF structures. The drawing begins offset from the beginning of the array. This method uses a default tension of 0.5.

public void DrawCurve(Pen pen, PointF[] points, int offset, int numberOfSegments)

Parameter	Type	Description
pen	Pen	Pen that determines the color, width, and height of the curve.
points	PointF[]	Array of PointF structures that define the spline.
offset	Int32	Offset from the first element in the array of the points parameter to the starting point in the curve.
numberOfSegments	Int32	Number of segments after the starting point to include in the curve.

Exceptions

exception	condition
ArgumentNullException	pen is null. -or- points is null.

See Also

• class Pen
• struct PointF
• class Graphics
• namespace Aspose.Imaging
• assembly Aspose.Imaging

---

DrawCurve(Pen, PointF[], int, int, float)

Draws a cardinal spline through a specified array of PointF structures using a specified tension. The drawing begins offset from the beginning of the array.

public void DrawCurve(Pen pen, PointF[] points, int offset, int numberOfSegments, float tension)

Parameter	Type	Description
pen	Pen	Pen that determines the color, width, and height of the curve.
points	PointF[]	Array of PointF structures that define the spline.
offset	Int32	Offset from the first element in the array of the points parameter to the starting point in the curve.
numberOfSegments	Int32	Number of segments after the starting point to include in the curve.
tension	Single	Value greater than or equal to 0.0F that specifies the tension of the curve.

Exceptions

exception	condition
ArgumentNullException	pen is null. -or- points is null.

See Also

• class Pen
• struct PointF
• class Graphics
• namespace Aspose.Imaging
• assembly Aspose.Imaging

---

DrawCurve(Pen, Point[])

Draws a cardinal spline through a specified array of Point structures.

public void DrawCurve(Pen pen, Point[] points)

Parameter	Type	Description
pen	Pen	Pen that determines the color, width, and height of the curve.
points	Point[]	Array of Point structures that define the spline.

Exceptions

exception	condition
ArgumentNullException	pen is null. -or- points 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

• class Pen
• struct Point
• class Graphics
• namespace Aspose.Imaging
• assembly Aspose.Imaging

---

DrawCurve(Pen, Point[], float)

Draws a cardinal spline through a specified array of Point structures using a specified tension.

public void DrawCurve(Pen pen, Point[] points, float tension)

Parameter	Type	Description
pen	Pen	Pen that determines the color, width, and height of the curve.
points	Point[]	Array of Point structures that define the spline.
tension	Single	Value greater than or equal to 0.0F that specifies the tension of the curve.

Exceptions

exception	condition
ArgumentNullException	pen is null. -or- points is null.

See Also

• class Pen
• struct Point
• class Graphics
• namespace Aspose.Imaging
• assembly Aspose.Imaging

---

DrawCurve(Pen, Point[], int, int, float)

Draws a cardinal spline through a specified array of Point structures using a specified tension.

public void DrawCurve(Pen pen, Point[] points, int offset, int numberOfSegments, float tension)

Parameter	Type	Description
pen	Pen	Pen that determines the color, width, and height of the curve.
points	Point[]	Array of Point structures that define the spline.
offset	Int32	Offset from the first element in the array of the points parameter to the starting point in the curve.
numberOfSegments	Int32	Number of segments after the starting point to include in the curve.
tension	Single	Value greater than or equal to 0.0F that specifies the tension of the curve.

Exceptions

exception	condition
ArgumentNullException	pen is null. -or- points is null.

See Also

• class Pen
• struct Point
• class Graphics
• namespace Aspose.Imaging
• assembly Aspose.Imaging