数学上不是有斜二测画法，算好坐标即可画出
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或者用AnyCAD的.Net图形控件
也可以调用matlab 实现
可以直接显示的。你看下面的示例，使用vb.net画的齿轮：
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
b = New Bitmap(PictureBox1.Width, PictureBox1.Height)
g = Graphics.FromImage(b)
'g.RotateTransform(90)
g.Clear(Color.White)
g.TranslateTransform(PictureBox1.Width / 2, PictureBox1.Height / 2)
g.ScaleTransform(1, -1)
'g.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias
g.SmoothingMode = Drawing2D.SmoothingMode.HighQuality
DrawCL(g, New PointF(Val(TextBox1.Text), Val(TextBox2.Text)), Val(TextBox3.Text), Val(TextBox4.Text), Val(TextBox5.Text), Val(TextBox6.Text), Val(TextBox7.Text), Val(TextBox8.Text), Val(TextBox9.Text))
DrawCL(g, New PointF(Val(TextBox18.Text), Val(TextBox17.Text)), Val(TextBox16.Text), Val(TextBox15.Text), Val(TextBox14.Text), Val(TextBox13.Text), Val(TextBox12.Text), Val(TextBox11.Text), Val(TextBox10.Text))
PictureBox1.Image = b
End Sub
VB.net与VB不同。
VB.net已经有专门绘图的类。
可以定义笔刷然后用Drawing类中的方法绘制。
Private Sub DrawEllipse()
Dim myPen As New System.Drawing.Pen(System.Drawing.Color.Red)
Dim formGraphics as System.Drawing.Graphics
formGraphics = Me.CreateGraphics()
formGraphics.DrawEllipse(myPen, New Rectangle(0,0,200,300))
myPen.Dispose()
formGraphics.Dispose()
End Sub
Private Sub DrawRectangle()
Dim myPen As New System.Drawing.Pen(System.Drawing.Color.Red)
Dim formGraphics as System.Drawing.Graphics
formGraphics = Me.CreateGraphics()
formGraphics.DrawRectangle(myPen, New Rectangle(0,0,200,300))
myPen.Dispose()
formGraphics.Dispose()
End Sub
不用PictureBoxTest.Image属性，直接把图形绘制到PictureBoxTest上面就可以了。
Dim button As Integer = 0
Private Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) _
Handles Button1.Click
Using g As Graphics = Graphics.FromHwnd(PictureBoxTest.Handle)
Dim penRed As Pen = New Pen(Color.Red, 1) '定义红色画笔
Dim penblue As Pen = New Pen(Color.Blue, 1) '定义蓝色画笔
If button = 0 Then
g.DrawLine(penRed, 0, 0, 100, 100)
button = 1
ElseIf button = 1 Then
g.DrawLine(penblue, 100, 100, 200, 200)
button = 0
End If
End Using
End Sub
drawpanel是什么东东，自定义控件吗？如果类似于picturebox,使用
'自动重绘要设为True，如果有这个属性的话
DrawPanel.AutoRedraw = True
'保存到变量
Image img = DrawPanel.Image
'直接设置Image属性即可
PictureBox1.Image = img
在窗体上拉一个Timer控件，enabled设为true，Interval设为20。完整代码如下： Dim myPen As New System.Drawing.Pen(System.Drawing.Color.Red)
Dim formGraphics As System.Drawing.Graphics
Dim num As Integer = 1
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Me.Refresh() '清屏
formGraphics = Me.CreateGraphics()
formGraphics.DrawEllipse(myPen, New Rectangle(100, 100, num, num)) '在坐标(100,100)的位置画圆
If num 200 Then '如果大于200则停止画圆
myPen.Dispose()
formGraphics.Dispose()
Timer1.Enabled = False
Else
num = num + 1
End If
End Sub
