ーーーー折れ線グラフ作成　Class1 ーーーー

'描画先のオブジェクト
Public objects As Object
'高さの分解能＝最大値
Public pHight As Integer
'幅の分解能
Public pWidth As Integer
'横の余白
Public yoko As Integer
'下の余白
Public shita As Integer
'線の色の設定
Public LineColor As Long
'縦横の線の描画
Public lineDrow As Boolean
'横線の描画
Public horizontalLine As Boolean
'横線の色
Public horizontalLineColor As Long
'横線の数
Public horizontalLineSpase As Integer
'流れる線の描画
Public streamLine As Boolean
'流れる線の色
Public streamLineColor As Long
'流れる線の間隔　=　10Stepおきに描画など
Public streamLineSpase As Integer


Private WidthScale(1000) As Integer
Private streamLineDrowCount As Integer
Private streamLineDrowCountPos As Integer

Public Sub Step(setX As Integer)
    Dim scaleX As Integer
    Dim scaleY As Integer
    Dim Bheight As Integer
    Bheight = objects.Height - shita
    Dim Bwidth As Integer
    Bwidth = objects.Width - yoko * 2
    scaleX = Bheight / pHight
    scaleY = Bwidth / pWidth
    Dim PointX As Integer
    Dim PointY As Integer
    PointX = Bheight - scaleX * setX
    Dim pos As Integer
    
        If streamLineDrowCountPos = streamLineSpase + 1 Then
            streamLineDrowCountPos = 0
        End If
    
    streamLineDrowCount = streamLineDrowCountPos
    streamLineDrowCountPos = streamLineDrowCountPos + 1
    
        If horizontalLine Then
            Dim horizontalLinePos As Integer
            Dim horizontalLineCount As Integer
            
            horizontalLineCount = Bheight / horizontalLineSpase
                For pos = 0 To horizontalLineSpase
                    horizontalLinePos = horizontalLinePos + horizontalLineCount
                    objects.Line (yoko, Bheight - horizontalLinePos)- _
                    (Bwidth + yoko, Bheight - horizontalLinePos), horizontalLineColor
                Next pos
        End If
    
        For pos = 0 To pWidth - 1
            If Not (pos = pWidth - 1) Then
                WidthScale(pos) = WidthScale(pos + 1)
            Else
                WidthScale(pos) = setX
            End If
        Next pos
    
    
    Dim FrontPos As Integer
    Dim LastPos As Integer
    
        For pos = 0 To pWidth - 1
                If pos = 0 Then
                    FrontPos = 0
                Else
                    If pos = pWidth - 1 Then
                        FrontPos = pos
                    Else
                        FrontPos = pos - 1
                    End If
                End If
        
            If streamLine Then
                If streamLineDrowCount = 0 Then
                    objects.Line (yoko + scaleY * pos, 0)-(yoko + scaleY * pos, Bheight), streamLineColor
                End If
                streamLineDrowCount = streamLineDrowCount + 1
                If streamLineDrowCount > streamLineSpase Then streamLineDrowCount = 0
            End If
        
            objects.Line (yoko + scaleY * FrontPos, (Bheight - scaleX * WidthScale(FrontPos)))- _
            (yoko + scaleY * pos, (Bheight - scaleX * WidthScale(pos))), LineColor
        Next pos
    
        If lineDrow Then
            objects.Line (yoko, 0)-(yoko, Bheight)
            objects.Line (yoko, Bheight)-(Bwidth + yoko, Bheight)
        End If
End Sub

ーーーー使用方法ーーーー
Dim drows As Class1

Private Sub Form_Load()
Set drows = New Class1
Set drows.objects = Form1.Picture1
drows.pHight = 100
drows.pWidth = 100
drows.shita = 1000
drows.yoko = 1000
drows.LineColor = RGB(0, 0, 255)
drows.lineDrow = True
drows.streamLine = True
drows.streamLineColor = RGB(255, 0, 0)
drows.streamLineSpase = 10
drows.horizontalLine = True
drows.horizontalLineColor = RGB(0, 255, 0)
drows.horizontalLineSpase = 10
End Sub

Private Sub Timer2_Timer()
Picture1.Cls
drows.Step (描画する値)
End Sub