frminput.frm

利用用余弦函数通过对变量X Y 轴的不同定义 制定出不同的函数图像

VERSION 5.00
Begin VB.Form frminput 
   Caption         =   "Form2"
   ClientHeight    =   5265
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   7590
   LinkTopic       =   "Form2"
   ScaleHeight     =   5265
   ScaleWidth      =   7590
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton cmdcancel 
      Caption         =   "取消"
      Height          =   495
      Left            =   5520
      TabIndex        =   10
      Top             =   4200
      Width           =   1215
   End
   Begin VB.CommandButton cmdinput 
      Caption         =   "重新输入"
      Height          =   495
      Left            =   3120
      TabIndex        =   9
      Top             =   4200
      Width           =   1215
   End
   Begin VB.CommandButton cmdyes 
      Caption         =   "确定"
      Height          =   495
      Left            =   720
      TabIndex        =   8
      Top             =   4200
      Width           =   1215
   End
   Begin VB.TextBox Text3 
      Height          =   495
      Left            =   2280
      TabIndex        =   7
      Text            =   " "
      Top             =   3120
      Width           =   1215
   End
   Begin VB.TextBox Text2 
      Height          =   495
      Left            =   5640
      TabIndex        =   6
      Text            =   " "
      Top             =   2040
      Width           =   1215
   End
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   2040
      TabIndex        =   5
      Text            =   " "
      Top             =   2040
      Width           =   1215
   End
   Begin VB.Label Label5 
      Caption         =   "循环次数"
      Height          =   495
      Left            =   480
      TabIndex        =   4
      Top             =   3120
      Width           =   1215
   End
   Begin VB.Label Label4 
      Caption         =   "Y轴比例"
      Height          =   495
      Left            =   4080
      TabIndex        =   3
      Top             =   2040
      Width           =   1215
   End
   Begin VB.Label Label3 
      Caption         =   "X轴比例"
      Height          =   495
      Left            =   480
      TabIndex        =   2
      Top             =   2040
      Width           =   1215
   End
   Begin VB.Label Label2 
      Caption         =   "(X轴比例:100:Y轴比例:100;循环次数:1)"
      Height          =   495
      Left            =   480
      TabIndex        =   1
      Top             =   960
      Width           =   4095
   End
   Begin VB.Label Label1 
      Caption         =   "请输入正弦曲线的参数"
      Height          =   375
      Left            =   480
      TabIndex        =   0
      Top             =   120
      Width           =   2295
   End
End
Attribute VB_Name = "frminput"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
 
Option Explicit
Const PI = 3.1415926
Dim x0, y0, xScale, yScale, n As Integer

 
Private Sub CmdYes_Click()
Dim i As Double
x0 = 10: y0 = 240
Dim x, y, xOld, yOld As Integer
xOld = 0: yOld = 0
xScale = Val(frminput.Text1)
yScale = Val(frminput.Text2)
n = Val(frminput.Text3)
frmline.pictdraw.Cls
    frmline.pictdraw.AutoRedraw = True
    x0 = 315: y0 = 240
    frmline.pictdraw.Line (0, y0)-(639, y0)
    frmline.pictdraw.Line (x0, 100)-(x0, 380)
For i = 0 To 2 * PI Step 2 * PI / 100
    x = xScale * Sin(2 * i)
    y = yScale * Sin(3 * i)
    frmline.pictdraw.Line (xOld + x0, yOld + y0)-(x + x0, y + y0)
    xOld = x: yOld = y
Next i
Unload frminput
End Sub
 
Private Sub CmdCancel_Click()
    Unload frminput
End Sub

 
Private Sub CmdInput_Click()
frminput.Text1 = ""
frminput.Text2 = ""
frminput.Text3 = ""
End Sub

Private Sub Form_Load()
    Dim xScale, yScale, n
End Sub