我是编程新手，请提供您的建议。 我的任务是编写一个程序，该程序将根据轨道的长度计算所需的项目数。我们需要自己绘制此轨道，但我不想使该应用程序全屏显示，因此我需要缩放功能，而对于我来说，我一生都无法实现。 请帮忙！
这是代码。
namespace RFIDGovno
{
public partial class Form1 : Form
{
List<Line> lines = new List<Line>();
List<Dot> dots = new List<Dot>();
bool isVert;
Point sPlace;
Point ePlace;
bool downed=false;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void pictureBox1_MouseClick(object sender, MouseEventArgs e)
{
Point temp = e.Location;
if (downed)
{
if (!(Math.Abs(e.X - sPlace.X) > Math.Abs(e.Y - sPlace.Y)))
{
temp.X = sPlace.X;
}
else
{
temp.Y = sPlace.Y;
}
downed = false;
ePlace = temp;
dots.Add(new Dot(ePlace));
lines.Add(new Line(sPlace,ePlace,isVert, isVert ? Math.Abs(sPlace.Y-ePlace.Y) : Math.Abs(sPlace.X - ePlace.X)));
}else
{
if (!dots.Any<Dot>())
{
downed = true;
sPlace = e.Location;
dots.Add(new Dot(sPlace));
}
else if(dots.Where(t => t.fuse).Any<Dot>())
{
downed = true;
sPlace = dots.Where(t => t.fuse).First().place;
}
}
drawing(null);
}
private void Zooming()
{
}
private void drawing(Point? mouse)
{
Graphics g = pictureBox1.CreateGraphics();
Bitmap im = new Bitmap(pictureBox1.Width-1, pictureBox1.Height-1);
Graphics q = Graphics.FromImage(im);
q.Clear(Color.White);
lines.ForEach(line =>
{
q.DrawLine(new Pen(Brushes.Black, 2), line.pStart, line.pEnd);
q.DrawString(line.length.ToString(), new Font("Times New Roman", 12, FontStyle.Bold), Brushes.Black, line.isVert ? line.pStart.X : line.pStart.X + ((line.pEnd.X - line.pStart.X) / 2) - 5, line.isVert ? line.pStart.Y + ((line.pEnd.Y - line.pStart.Y) / 2) - 5 : line.pStart.Y);
});
if (downed)
{
q.DrawLine(new Pen(Brushes.Black, 2), sPlace, mouse ?? sPlace);
if ((isVert)&&(mouse.HasValue))
{
q.DrawString(Math.Abs(sPlace.Y-mouse.Value.Y).ToString(), new Font("Times New Roman", 12, FontStyle.Bold), Brushes.Black, sPlace);
}
else if ((isVert==false) && (mouse.HasValue))
{
q.DrawString(Math.Abs(sPlace.X - mouse.Value.X).ToString(), new Font("Times New Roman", 12, FontStyle.Bold), Brushes.Black, sPlace);
}
}
dots.ForEach(dot =>
{
q.DrawEllipse(new Pen(Brushes.Black, 2),dot.place.X-1, dot.place.Y - 1, 2, 2);
if (dot.fuse)
{
q.DrawEllipse(new Pen(Brushes.Red, 2), dot.place.X - 2, dot.place.Y - 2, 4, 4);
}
});
g.DrawImage(im, 1, 1);
q.Dispose();
im.Dispose();
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
Point temp = e.Location;
if (downed)
{
if (!(Math.Abs(e.X - sPlace.X) > Math.Abs(e.Y - sPlace.Y)))
{
temp.X = sPlace.X;
isVert = true;
}
else
{
temp.Y = sPlace.Y;
isVert = false;
}
}
else
{
dots.ForEach(t => t.fuse = false);
List<Dot> tDots = dots.Where(dt => Math.Abs(e.Location.X - dt.place.X) < 20 && Math.Abs(e.Location.Y - dt.place.Y) < 20).ToList();
if (tDots.Any<Dot>())
{
double min = 0;
min = tDots.Min(t => distance(t.place, e.Location));
tDots.Where(t => distance(t.place, e.Location) == min).First().fuse = true;
}
}
drawing(temp);
}
private double distance(Point p1, Point p2)
{
double dist=0;
dist = (Math.Sqrt(Math.Abs(p1.X-p2.X)+Math.Abs(p1.Y-p2.Y)));
return dist;
}
private void pictureBox1_Click(object sender, EventArgs e)
{
}
private void trackBar1_Scroll(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void tabPage1_Click(object sender, EventArgs e)
{
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void tabPage2_Click(object sender, EventArgs e)
{
}
private void button1_Click_1(object sender, EventArgs e)
{
int between = 0;
string curr = comboBox1.SelectedItem.ToString();
if (curr == "Short")
{
between = 1250;
}
else if (curr == "Medium")
{
between = 1875;
}
else
{
between = 3750;
}
double wut = (double.Parse(textBox1.Text) / between * 300 + double.Parse(textBox3.Text) + double.Parse(textBox2.Text) * 2);
string answer = Convert.ToString(Math.Ceiling(wut));
label4.Text = answer;
}
}
public class Line
{
public Point pEnd;
public Point pStart;
public bool isVert;
public int length;
public Line(Point pStart, Point pEnd, bool isVert,int length)
{
this.pStart = pStart;
this.pEnd = pEnd;
this.isVert = isVert;
this.length = length;
}
}
public class Dot
{
public bool fuse;
public Point place;
public Dot(Point place)
{
this.place = place;
}
}
}