交互式绘图基础

 代码如下：

交互式绘图 
 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Text;
 7 using System.Windows.Forms;
 8 
 9 namespace 交互绘图
10 {
11     public partial class Form1 : Form
12     {
13         public Form1()
14         {
15             InitializeComponent();
16         }
17         int x1, y1;
18         int flat = 1;
19         bool b1, b2, b3, b4, b5;
20 
21         private void pictureBox1_Click(object sender, EventArgs e)
22         {
23            
24         }
25 
26         private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
27         {
28              int x2, y2;
29             Graphics g = pictureBox1.CreateGraphics();
30             Pen p1 = new Pen(Color.Chocolate, 3);
31             if (b1 == true)
32             {
33                 if (flat == 1)
34                 {
35                     x1 = e.X; y1 = e.Y; flat = 0;
36                 }
37                 else
38                 {
39                     x2 = e.X; y2 = e.Y;
40                     g.DrawLine(p1, x1, y1, x2, y2);
41                     flat = 1;
42                 }
43             }
44             if (b2 == true)
45             {
46                 if (flat == 1)
47                 {
48                     x1 = e.X; y1 = e.Y; flat = 0;
49                 }
50                 else
51                 {
52                     x2 = e.X; y2 = e.Y;
53                     g.DrawEllipse(p1, x1, y1, (float)Math.Abs(x1 - x2), (float)Math.Abs(y1 - y2));
54                     flat = 1;
55                 }
56             }
57             if (b3 == true)
58             {
59                 if (flat == 1)
60                 {
61                     x1 = e.X; y1 = e.Y; flat = 0;
62                 }
63                 else
64                 {
65                     x2 = e.X; y2 = e.Y;
66                     g.DrawRectangle(p1, x1, y1, (float)Math.Abs(x1 - x2), (float)Math.Abs(y1 - y2));
67                     flat = 1;
68                 }
69             }
70             b5 = true;
71         }
72 
73         private void 直线ToolStripMenuItem_Click(object sender, EventArgs e)
74         {
75             b1 = true; flat = 1; b2 = false; b3 = false; b4 = false;
76         }
77 
78         private void 圆ToolStripMenuItem_Click(object sender, EventArgs e)
79         {
80             b1 = false; flat = 1; b2 = true; b3 = false; b4 = false;
81         }
82 
83         private void 矩形ToolStripMenuItem_Click(object sender, EventArgs e)
84         {
85             b1 =false; flat = 1; b2 = false; b3 =true; b4 = false;
86         }
87 
88         private void Form1_Load(object sender, EventArgs e)
89         {
90             pictureBox1.BackColor = Color.DarkGray;
91         }
92     }
93 }

调用控件打印预览 
 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Text;
 7 using System.Windows.Forms;
 8 
 9 namespace print
10 {
11     public partial class Form1 : Form
12     {
13         string str;
14         public Form1()
15         {
16             InitializeComponent();
17         }
18 
19         private void button1_Click(object sender, EventArgs e)
20         {
21             openFileDialog1.Multiselect = true;
22             openFileDialog1.ShowDialog();
23             str = openFileDialog1.FileName;
24             //pictureBox1.Image = Image.FromFile(str);
25             try
26             {
27                 pictureBox1.Image = Image.FromFile(openFileDialog1.FileName);
28             }
29             catch (Exception EX)
30             {
31                 MessageBox.Show(EX.Message);
32             }
33         }
34 
35         private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
36         {
37             try
38             {
39                 Bitmap bitmap = new Bitmap(str);
40                 e.Graphics.DrawImage(bitmap,100,200,600,800);
41             }
42             catch(Exception ex)
43             {
44                 MessageBox.Show(ex.Message);
45             }
46         }
47 
48         private void button2_Click(object sender, EventArgs e)
49         {
50             //printPreviewDialog1.Document = this.printDocument1;
51             printPreviewDialog1.ShowDialog();
52         }
53 
54         private void button3_Click(object sender, EventArgs e)
55         {
56             //Application.Exit();
57             this.Close();
58         }
59 
60         private void printDocument1_BeginPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
61         {
62             MessageBox.Show("即将出现要打印的内容！");
63         }
64 
65         private void printDocument1_EndPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
66         {
67             //MessageBox.Show("恭喜您，打印成功!");
68         }
69 
70         private void Form1_Load(object sender, EventArgs e)
71         {
72 
73         }
74     }
75 }

AutoCad中：运用dxf接口来开发。

 win-touber-C编译，运行dxf文件，以下是代码。

自定义dxf源文件
 1 #include"stdio.h"
 2 #include"conio.h"
 3 FILE *fp;
 4 void hsec(),endsec();
 5 void line();
 6 void arc();
 7 void text();
 8 void circle();
 9 main()
10 {
11  char a[8]="KEY40";
12  clrscr();
13  fp=fopen("d:\\wo.dxf","r");
14  if(fp==NULL)
15  {
16   printf("can't open\n");
17   exit(1);
18   }
19  hsec(fp);
20  line(fp,20.0,20.0,50.0,20.0);
21  line(fp,20.0,30.0,50.0,30.0);
22  arc(fp,20.0,25.0,5.0,90.0,270.0);
23  arc(fp,50.0,25.0,5.0,-90.0,90.0);
24  text(fp,30.0,45.0,3.5,0.0,0.0,a);
25  circle(fp,60.0,60.0,20.0);
26  text(fp,35.0,65.0,4.5,0.0,0.0,"我爱中国！");
27   text(fp,50.0,85.0,3.0,0.0,0.0,"你好，欢迎访问！");
28  circle(fp,40.0,60.0,10.0);
29   arc(fp,80.0,50.0,10.0,-90.0,90.0);
30    circle(fp,160.0,160.0,20.0);
31  line(fp,80.0,50.0,90.0,180.0);
32   circle(fp,60.0,60.0,20.0);
33    line(fp,60.0,60.0,100.0,100.0);
34    circle(fp,100.0,100.0,20.0);
35    line(fp,60.0,60.0,90.0,180.0);
36  endsec(fp);
37  fclose(fp);
38 }
39 
40 void hsec(FILE *fp)
41 {
42  fprintf(fp,"0\nSECTION\n2\nENTITIES\n");/***\n为换行符***/
43  }
44 void line(FILE *fp,double x1,double y1,double x2,double y2)
45 {
46  fprintf(fp,"0\nline\n8\nA\n10\n");
47  fprintf(fp,"%9.4f\n",x1);
48  fprintf(fp,"20\n");
49  fprintf(fp,"%9.4f\n",y1);
50  fprintf(fp,"11\n");
51  fprintf(fp,"%9.4f\n",x2);
52  fprintf(fp,"21\n");
53  fprintf(fp,"%9.4f\n",y2);
54  }
55 void arc(FILE *fp,double x,double y,double r,double sang,double eang)
56 {
57  fprintf(fp,"0\narc\n8\nA\n10\n");
58  fprintf(fp,"%9.4f\n",x);
59  fprintf(fp,"20\n");
60  fprintf(fp,"%9.4f\n",y);
61  fprintf(fp,"40\n");
62  fprintf(fp,"%9.4f\n",r);
63  fprintf(fp,"50\n");
64  fprintf(fp,"%9.4f\n",sang);
65  fprintf(fp,"51\n");
66  fprintf(fp,"%9.4f\n",eang);
67  }
68 void circle(FILE *fp,double x,double y,double r)
69 {
70  fprintf(fp,"0\ncircle\n8\nA\n10\n");
71  fprintf(fp,"%9.4f\n",x);
72  fprintf(fp,"20\n");
73  fprintf(fp,"%9.4f\n",y);
74  fprintf(fp,"40\n");
75  fprintf(fp,"%9.4f\n",r);
76 }
77 void text(FILE *fp,double x,double y,double h,double rota,double ang,char *tex)
78 {
79  fprintf(fp,"0\ntext\n8\nA\n10\n");
80  fprintf(fp,"%9.4f\n",x);
81  fprintf(fp,"20\n");
82  fprintf(fp,"%9.4f\n",y);
83  fprintf(fp,"40\n");
84  fprintf(fp,"%9.4f\n",h);
85  fprintf(fp,"1\n");
86  fprintf(fp,"%s\n",tex);
87  fprintf(fp,"50\n");
88  fprintf(fp,"%9.4f\n",rota);
89  fprintf(fp,"51\n");
90  fprintf(fp,"%9.4f\n",ang);
91 }
92 void endsec(FILE *fp)
93 {
94  fprintf(fp,"0\nENDSEC\n0\nEOF\n");
95  }

posted @ 2013-03-15 10:47  dolp  阅读(482)  评论(0)    收藏  举报