在cad中用圓繪制位圖，第一個c#程序

時間:2009-03-29 19:38:42 來源:

此處到處是高手，發個很簡單的c#程序，見笑了。

1. 程序說明: 在autocad中打開一個位圖，程序將每一個像素用圓繪制出來。
程序作用：無聊游戲之作，不過也是以前一個位圖矢量化的初步設想，假如對于黑白線條位圖，可用此繪出后，查找圓心，對圓心距離小于sqrt(2)單位的進行連線，以后再進行抽點等操作。當然對于復雜實體和文字等，還需要再尋找算法。

2. 開發平臺 visual studio 2005中文版+ autocad 2007英文版。acmgd.dll等的位置是在d:program filesautocad 2007。

3. 程序使用：用Netload導入form1.dll，然后鍵入命令 my
需要注意的是，由于每個像素繪制一個圓，所以，本程序是沒有圖片大小限制的，但是假若圖片大于250*250像素的時候，需要比較長的時間（我導入的750*350的圖片，大概需要2分鐘，我是P4 2.8G的CPU），會導致CPU運行滿載的情況，請選擇圖片的時候選擇小圖片。

4.一些基本代碼

// by qjchen
// chenqj.blogspot.com
// 2009-3-27 9:33:23
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 form1;
namespace form1
{
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Colors;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Internal;
using Autodesk.AutoCAD.Interop;
using AcadApp = Autodesk.AutoCAD.ApplicationServices.Application;
public partial class ModalForm : Form
{
public ModalForm()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
try
{
Bitmap myBitmap = new Bitmap(label1.Text);
System.Drawing.Color c1;
int intWidth = myBitmap.Width;
int intHeight = myBitmap.Height;
if (intWidth * intHeight > 100000)
{
MessageBox.Show("It is a big pic" + intHeight + "," + intWidth);
}
for (int i = 0; i <= intWidth - 1; i++)
{
for (int j = 0; j <= intHeight - 1; j++)
{
this.progressBar1.Value = (int)(i) * 100 / intWidth;
c1 = myBitmap.GetPixel(i, j);
int cr = c1.R;
int cg = c1.G;
int cb = c1.B;
ObjectId entId = ModelSpace.AddCircle(new Point3d(i, (intHeight - j), 0), 0.5);
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
Entity ent = (Entity)trans.GetObject(entId, OpenMode.ForWrite);
ent.Color = Color.FromRgb((byte)cr, (byte)cg, (byte)cb);
trans.Commit();
}
}
}
AcadApplication pApp;
pApp = (Autodesk.AutoCAD.Interop.AcadApplication)Autodesk.AutoCAD.ApplicationServices.Application.AcadApplication;
pApp.ZoomExtents();
}
catch { }
}
private void button2_Click(object sender, EventArgs e)
{
OpenFileDialog ofdPic = new OpenFileDialog();
ofdPic.Filter = "JPG(*.JPG;*.JPEG);gif file(*.GIF);bmp file(*.BMP);png file(*.PNG)|*.jpg;*.jpeg;*.gif;*.bmp;*.png";
ofdPic.FilterIndex = 1;
ofdPic.RestoreDirectory = true;
ofdPic.FileName = "";
if (ofdPic.ShowDialog() == DialogResult.OK)
{
string sPicPaht = ofdPic.FileName.ToString();
FileInfo fiPicInfo = new FileInfo(sPicPaht);
long lPicLong = fiPicInfo.Length / 1024;
string sPicName = fiPicInfo.Name;
string sPicDirectory = fiPicInfo.Directory.ToString();
string sPicDirectoryPath = fiPicInfo.DirectoryName;
Bitmap bmPic = new Bitmap(sPicPaht);
Point ptLoction = new Point(bmPic.Size);
if (ptLoction.X > picBox.Size.Width || ptLoction.Y > picBox.Size.Height)
{
picBox.SizeMode = PictureBoxSizeMode.Zoom;
}
else
{
picBox.SizeMode = PictureBoxSizeMode.CenterImage;
}
picBox.LoadAsync(sPicPaht);
label1.Text = sPicDirectoryPath + @"" + sPicName;
}
}
private void button3_Click(object sender, EventArgs e)
{
this.Close();
}
private void button4_Click(object sender, EventArgs e)
{
MessageBox.Show(" To draw bitmap into Autocad by each pixels in circle.n by qjchenn chenqj.blogspot.com");
}
[CommandMethod("my")]
public void drawpic()
{
ModalForm modalForm = new ModalForm();
Application.ShowModalDialog(modalForm);
}
}
}

復制代碼

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在cad中用圓繪制位圖，第一個c#程序

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