C# 用字符拼成图片（字符画）示例源码

C#语言基础

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开发语言：C#
实例大小：0.05M
下载次数：37
浏览次数：987
发布时间：2018-12-27
实例类别：C#语言基础
发布人：仓唯
文件格式：.zip
所需积分：2

实例介绍

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【实例简介】

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【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Collections.Specialized;

namespace ImageToASCIIconverter
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private string[] _AsciiChars = { "@", "#", "&", "%", "*", "o", "!", ";", ",", ".", " " };
        private string _Content;

        private void Form1_Load(object sender, EventArgs e)
        {
        }

        private void btnConvertToAscii_Click(object sender, EventArgs e)
        {
            btnConvertToAscii.Enabled = false;
            //Load the Image from the specified path
            Bitmap image = new Bitmap(txtPath.Text, true);
            //Resize the image...
            //I've used a trackBar to emulate Zoom In / Zoom Out feature
            //This value sets the WIDTH, number of characters, of the text image
            image = GetReSizedImage(image,this.trackBar.Value);

//Convert the resized image into ASCII
_Content = ConvertToAscii(image);

            //Enclose the final string between <pre> tags to preserve its formatting
            //and load it in the browser control
            browserMain.DocumentText = "<pre>" "<Font size=0>" _Content "</Font></pre>";
            btnConvertToAscii.Enabled = true;
        }

        private string ConvertToAscii(Bitmap image)
        {
            Boolean toggle = false;
            StringBuilder sb = new StringBuilder();

            for (int h = 0; h < image.Height; h )
            {
                for (int w = 0; w < image.Width; w )
                {
                    Color pixelColor = image.GetPixel(w, h);
                    //Average out the RGB components to find the Gray Color
                    int red = (pixelColor.R pixelColor.G pixelColor.B) / 3;
                    int green = (pixelColor.R pixelColor.G pixelColor.B) / 3;
                    int blue = (pixelColor.R pixelColor.G pixelColor.B) / 3;
                    Color grayColor = Color.FromArgb(red,green,blue);

                    //Use the toggle flag to minimize height-wise stretch
                    if (!toggle)
                    {
                        int index = (grayColor.R * 10) / 255;
                        sb.Append(_AsciiChars[index]);
                    }
                }
                if (!toggle)
                {
                    sb.Append("<BR>");
                    toggle = true;
                }
                else
                {
                    toggle = false;
                }
            }

            return sb.ToString();
        }

        private Bitmap GetReSizedImage(Bitmap inputBitmap, int asciiWidth )
        {
            int asciiHeight=0;
            //Calculate the new Height of the image from its width
            asciiHeight = (int)Math.Ceiling((double)inputBitmap.Height * asciiWidth / inputBitmap.Width);

            //Create a new Bitmap and define its resolution
            Bitmap result = new Bitmap(asciiWidth, asciiHeight);
            Graphics g = Graphics.FromImage((Image)result);
            //The interpolation mode produces high quality images
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
            g.DrawImage(inputBitmap, 0, 0, asciiWidth, asciiHeight);
            g.Dispose();
            return result;
        }

        private void btnBrowse_Click(object sender, EventArgs e)
        {
            DialogResult diag = openFileDialog1.ShowDialog();
            if (diag == DialogResult.OK)
            {
                txtPath.Text = openFileDialog1.FileName;
            }
        }

        private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
        {
            saveFileDialog1.Filter = "Text File (*.txt)|.txt|HTML (*.htm)|.htm";
            DialogResult diag = saveFileDialog1.ShowDialog();
            if (diag == DialogResult.OK)
            {
                if (saveFileDialog1.FilterIndex == 1)
                {
                    //If the format to be saved is HTML
                    //Replace all HTML spaces to standard spaces
                    //and all linebreaks to CarriageReturn, LineFeed
                    _Content = _Content.Replace(" ", " ").Replace("<BR>","\r\n");
                }
                else
                {
                    //use <pre></pre> tag to preserve formatting when viewing it in browser
                    _Content = "<pre>" _Content "</pre>";
                }
                StreamWriter sw = new StreamWriter(saveFileDialog1.FileName);
                sw.Write(_Content);
                sw.Flush();
                sw.Close();
            }
        }

}
}

标签： 图片 C# 字符源码

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