Figure 313 A sample arc application in VS .NET

Painting Code128 in VS .NET Figure 313 A sample arc application
Figure 313 A sample arc application
USS Code 128 Generation In VS .NET
Using Barcode creation for Visual Studio .NET Control to generate, create ANSI/AIM Code 128 image in .NET applications.
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
Decode Code 128 In Visual Studio .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
We define two floating variables on the class level to store the start and sweep angles:
Barcode Creator In .NET
Using Barcode encoder for .NET Control to generate, create barcode image in Visual Studio .NET applications.
private float startAngle = 450f; private float sweepAngle = 900f; Now let's draw an arc on the form's paint event handler Listing 311 draws an arc We first create a pen and a rectangle, and we use them in the DrawArc method with start and sweep angles
Recognize Bar Code In VS .NET
Using Barcode reader for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Listing 311 The paint event handler
Printing Code 128 Code Set A In Visual C#.NET
Using Barcode encoder for .NET Control to generate, create Code 128B image in .NET applications.
private void Form1_Paint(object sender, SystemWindowsFormsPaintEventArgs e) { Pen redPen = new Pen(ColorRed, 3); Rectangle rect = new Rectangle(20, 20, 200, 200); eGraphicsDrawArc(redPen, rect, startAngle, sweepAngle); redPenDispose(); } Now we add code for the Reset Angles button Listing 312 simply sets the start and sweep angles by reading values from the text boxes and calls the Invalidate method, which forces GDI+ to call the form's paint event handler
Drawing Code 128 Code Set B In .NET Framework
Using Barcode maker for ASP.NET Control to generate, create ANSI/AIM Code 128 image in ASP.NET applications.
Listing 312 The Reset Angles button click event handler
Drawing Code 128 Code Set B In Visual Basic .NET
Using Barcode printer for .NET Control to generate, create Code128 image in VS .NET applications.
private void ResetAnglesBtn_Click(object sender, SystemEventArgs e) { startAngle = (float)ConvertToDouble(textBox1Text); sweepAngle = (float)ConvertToDouble(textBox2Text); Invalidate(); } Figure 314 shows the default output from the application
Make EAN128 In .NET
Using Barcode generator for VS .NET Control to generate, create UCC.EAN - 128 image in VS .NET applications.
Figure 314 The default arc, with start angle of 45 degrees and sweep angle of 90 degrees
Barcode Printer In .NET
Using Barcode generator for .NET Control to generate, create bar code image in .NET framework applications.
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
Code-39 Printer In VS .NET
Using Barcode creation for .NET Control to generate, create Code-39 image in .NET applications.
Now let's change the start and sweep angles to 90 and 180 degrees, respectively, and click the Reset Angles button The new output looks like Figure 315
Encoding Barcode In Visual Studio .NET
Using Barcode maker for Visual Studio .NET Control to generate, create barcode image in Visual Studio .NET applications.
Figure 315 An arc with start angle of 90 degrees and sweep angle of 180 degrees
Draw Code 2 Of 5 In Visual Studio .NET
Using Barcode generation for Visual Studio .NET Control to generate, create 2/5 Standard image in .NET applications.
Let's change angles one more time This time our start angle will be 180 degrees, and the sweep angle will be 360 degrees The new output
GS1 - 12 Drawer In VS .NET
Using Barcode generation for ASP.NET Control to generate, create UPC A image in ASP.NET applications.
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
UPC-A Supplement 2 Decoder In VS .NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
looks like Figure 316
Painting Code-128 In VB.NET
Using Barcode generation for .NET framework Control to generate, create Code 128 Code Set B image in .NET framework applications.
Figure 316 An arc with start angle of 180 degrees and sweep angle of 360 degree
Paint Data Matrix In .NET Framework
Using Barcode generation for ASP.NET Control to generate, create ECC200 image in ASP.NET applications.
3218 Drawing Splines and Curves
Paint Code 3 Of 9 In Java
Using Barcode generator for Java Control to generate, create Code39 image in Java applications.
A curve is a sequence of adjoining points with a tension The tension of a curve provides its smoothness and removes corners A cardinal spline is a sequence of multiple joined curves Basically, in a curve there is no straight line between two points To illustrate, Figure 317 shows two curves
Making ANSI/AIM Code 128 In Java
Using Barcode generator for Java Control to generate, create Code128 image in Java applications.
Figure 317 Two curves
Data Matrix 2d Barcode Decoder In .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
There are two types of curves: open and closed A closed curve is a curve whose starting point is the ending point A curve that is not a closed curve is called an open curve In Figure 318 the first curve is an open curve, and the second curve is a closed curve
Code 128 Code Set C Drawer In VS .NET
Using Barcode generation for ASP.NET Control to generate, create Code-128 image in ASP.NET applications.
Figure 318 Open and closed curves
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
3219 Drawing Open Curves
Programmatically, a curve is an array of connected points with a tension A curve has a starting point and an ending point Between these two points can be many intermediate points The Graphics class provides two methods for drawing curves:DrawCurve and DrawClosedCurve The DrawCurve method draws a curve specified by an array of Point structures The DrawClosedCurve draws a closed curve specified by an array of Point structures Both DrawCurve and DrawClosedCurve have overloaded methods DrawCurve has the following overloaded forms:
public void DrawCurve(Pen, Point[]); public void DrawCurve(Pen, PointF[]); public void DrawCurve(Pen, Point[], float); public void DrawCurve(Pen, PointF[], float); public void DrawCurve(Pen, PointF[], int, int); public void DrawCurve(Pen, Point[], int, int, float); public void DrawCurve(Pen, PointF[], int, int, float);
The simplest form of DrawCurve is
public void DrawCurve(Pen pen, Point[] points); where points is an array of points To test the DrawCurve methods, we create a Windows application and add Listing 313 to the form's paint event handler It creates an array of points and draws a curve using the DrawCurve method
Listing 313 Drawing a curve
private void Form1_Paint(object sender, SystemWindowsFormsPaintEventArgs e) { // Create a pen Pen bluePen = new Pen(ColorBlue, 1);
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
// Create an array of points PointF pt1 = new PointF( 400F, 500F); PointF pt2 = new PointF(500F, 750F); PointF pt3 = new PointF(1000F, 1150F); PointF pt4 = new PointF(2000F, 1800F); PointF pt5 = new PointF(2000F, 900F); PointF[] ptsArray = { pt1, pt2, pt3, pt4, pt5 }; // Draw curve eGraphicsDrawCurve(bluePen, ptsArray); // Dispose of object bluePenDispose(); } Figure 319 shows the output from our Listing 313