asp.net realization of C # Drawing Taiji Method

asp.net realization of C # Drawing Taiji Method _ Practical skills

Last Update:2017-01-19 Source: Internet

Author: User

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This article illustrates the method of asp.net to realize C # drawing the Taiji diagram. Share to everyone for your reference. Specifically as follows:

The finished product diagram looks like this:

HTML page:

Note settings:

Copy Code code as follows:

Contenttype= "Image/jpeg"

Copy Code code as follows:

<%@ Page language= "C #" autoeventwireup= "true" codefile= "TaiJiTu.aspx.cs" inherits= "Taijitu" contenttype= "image/" Jpeg "%>
<! DOCTYPE html>
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<title></title>

<body>
<form id= "Form1" runat= "Server" >
<div>
</div>
</form>
</body>

Background code:

Copy Code code as follows:

Using System;
Using System.Drawing;
Using System.Drawing.Drawing2D;
Using System.Drawing.Imaging;

public partial class TaiJiTu:System.Web.UI.Page
{
Private encoder Myencoder;
Private Encoderparameter Myencoderparameter;
Private EncoderParameters myencoderparameters;
protected void Page_Load (object sender, EventArgs e)
{
int imgwidth = 400; Image size
int Eyeradius = IMGWIDTH/20; Fish Eye radius
int headdiameter = IMGWIDTH/2; Fish Head Diameter

Bitmap image = New Bitmap (ImgWidth, imgwidth);
Image. Setresolution (300, 300);

Graphics Graphics = graphics.fromimage (image);

Set Image quality
graphics.compositingquality = compositingquality.highquality;
Graphics. SmoothingMode = Smoothingmode.antialias;
Graphics. Interpolationmode = Interpolationmode.highqualitybicubic;

Background padding for White
Brush white = new SolidBrush (color.white);
Graphics. FillRectangle (White, new Rectangle (0, 0, ImgWidth, imgwidth));

Brush blue = new SolidBrush (Color.Blue);
Brush red = new SolidBrush (color.red);

Whole circle filled with blue
Graphics. FillPie (blue, 0, 0, imgwidth, imgwidth, 0, 360);

Defines the path to the right (red section)
GraphicsPath redpath = new GraphicsPath ();//initialization path
Redpath.addarc (0, 0, imgwidth, imgwidth, 0,-180);
Redpath.addarc (0, HEADDIAMETER/2, Headdiameter, Headdiameter, 0,-180);
Redpath.addarc (Headdiameter, HEADDIAMETER/2, Headdiameter, Headdiameter, 0, 180);
Fill the right part
Graphics. FillPath (red, Redpath);
Fill red eyes
Graphics. FillPie (Red, New Rectangle (HEADDIAMETER/2-Eyeradius, Headdiameter-eyeradius, Eyeradius * 2, Eyeradius * 2), 0, 360);
Fill Blue eyes
Graphics. FillPie (Blue, new Rectangle (Headdiameter + HEADDIAMETER/2-Eyeradius, Headdiameter-eyeradius, Eyeradius * 2, Eyeradiu S * 2), 0, 360);

Graphics. Dispose ();

Write to the response output stream, general quality
Image. Save (Response.outputstream, imageformat.jpeg);

Modify picture Save Quality
ImageCodecInfo myimagecodecinfo = Getencoder (imageformat.jpeg);
Myencoder = encoder.quality;
Myencoderparameters = new EncoderParameters (1);
Picture quality level
Myencoderparameter = new Encoderparameter (Myencoder, 100L);
Myencoderparameters.param[0] = Myencoderparameter;

Output using the specified parameter
Image. Save (Response.outputstream, Myimagecodecinfo, myencoderparameters);
}
private static ImageCodecInfo Getencoder (imageformat format)
{
imagecodecinfo[] codecs = Imagecodecinfo.getimageencoders ();

foreach (ImageCodecInfo codec in codecs)
{
if (codec. FormatID = = format. GUID)
{
return codec;
}
}
return null;
}
}

I hope this article will help you with the C # program.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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asp.net realization of C # Drawing Taiji Method _ Practical skills

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