using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace DrawRuler
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
void drawRuler(float startPos, float endPos, int h)
{
float baseHeight =4;
if (h > 0)
{
float midPos = (startPos + endPos) / 2;
float height = h * baseHeight;
drawMark(midPos, height);
drawRuler(startPos, midPos, h - 1);
drawRuler(midPos, endPos, h - 1);
}
}
void drawMark(float pos, float height)
{
using (Graphics g = this.CreateGraphics())
{
float xOffset = 100 + pos;
float yOffset = 100-height;
SolidBrush brusuh = new SolidBrush(Color.Black);
Pen p = new Pen(brusuh, 1);
g.DrawLine(p, xOffset, yOffset, xOffset, 100);
}
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
#region 首先画一条直线
using (Graphics g = e.Graphics)
{
float xOffset = 100;
float yOffset = 100;
int len = 300;
SolidBrush brusuh = new SolidBrush(Color.Black);
Pen p = new Pen(brusuh, 2);
g.DrawLine(p, xOffset, yOffset, xOffset + len, yOffset);
}
#endregion
drawRuler(0, 300, 3);
}
}
}
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