54to空间直角坐标系的vb.net代码
时间: 2024-01-14 21:00:47 浏览: 35
在VB.Net中绘制一个54to空间直角坐标系的代码如下:
首先,我们需要在Form的Load事件中添加以下代码,用于设置绘图相关属性:
```vb
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
' 设置绘图区域大小
Me.AutoScaleMode = AutoScaleMode.None
Me.ClientSize = New Size(800, 800)
' 设置绘图颜色
Me.BackColor = Color.White
End Sub
```
接下来,在Form的Paint事件中添加以下代码,用于绘制坐标系:
```vb
Private Sub Form1_Paint(sender As Object, e As PaintEventArgs) Handles MyBase.Paint
' 创建Graphics对象
Dim g As Graphics = e.Graphics
' 设置坐标原点在窗体中心
Dim originX As Integer = Me.ClientSize.Width \ 2
Dim originY As Integer = Me.ClientSize.Height \ 2
' 设置坐标轴长度
Dim axisLength As Integer = 300
' 绘制x轴
g.DrawLine(Pens.Black, originX - axisLength, originY, originX + axisLength, originY)
' 绘制y轴
g.DrawLine(Pens.Black, originX, originY - axisLength, originX, originY + axisLength)
' 绘制z轴
g.DrawLine(Pens.Black, originX, originY, originX, originY - axisLength)
' 绘制坐标轴的箭头
Dim arrowSize As Integer = 10
g.FillPolygon(Brushes.Black, {New Point(originX + axisLength, originY), New Point(originX + axisLength - arrowSize, originY - arrowSize), New Point(originX + axisLength - arrowSize, originY + arrowSize)})
g.FillPolygon(Brushes.Black, {New Point(originX, originY - axisLength), New Point(originX - arrowSize, originY - axisLength + arrowSize), New Point(originX + arrowSize, originY - axisLength + arrowSize)})
g.FillPolygon(Brushes.Black, {New Point(originX, originY - axisLength), New Point(originX - arrowSize, originY - axisLength + arrowSize), New Point(originX + arrowSize, originY - axisLength + arrowSize)})
g.FillPolygon(Brushes.Black, {New Point(originX, originY - axisLength), New Point(originX - arrowSize, originY - axisLength + arrowSize), New Point(originX + arrowSize, originY - axisLength + arrowSize)})
' 绘制坐标轴的刻度
Dim scaleLength As Integer = 10
Dim scaleInterval As Integer = 50
Dim scalePosition As Integer = originX - axisLength + scaleInterval
Do While scalePosition < originX + axisLength
g.DrawLine(Pens.Black, scalePosition, originY - scaleLength, scalePosition, originY + scaleLength)
scalePosition += scaleInterval
Loop
End Sub
```
最后,在Form的代码中添加以下代码,用于调用Paint事件重新绘制坐标系:
```vb
Private Sub Form1_Resize(sender As Object, e As EventArgs) Handles MyBase.Resize
' 重新绘制坐标系
Me.Invalidate()
End Sub
```
通过运行程序,你将在窗体中看到一个绘制了54to空间直角坐标系的画布。