Circle Drawing Example
This code is simply to illustrate the mathematical operations necessary to draw a circle. Of course I realize VB has built in functions for this, but thought this might be useful for some to understand. In my example, I use a picture box with the PSet method to do the drawing.
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Codice sorgente
Private Sub Command1_Click()
Dim intRadius, intDegree As Integer
Dim sngX, sngY As Single
If IsNumeric(Text1.Text) Then
intRadius = Text1.Text
For intDegree = 1 To 360
sngX = (Cos(intDegree) * intRadius) + intRadius
sngY = intRadius - (Sin(intDegree) * intRadius)
Picture1.PSet (sngX, sngY), vbBlack
Next
Else
MsgBox "Please enter a numeric value for the radius."
Text1.SetFocus
End If
End Sub
Private Sub Command2_Click()
Unload Form1
End Sub
Commenti originali (3)
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