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Visual Basic Graphics Programming (2nd Edition)
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Visual Basic Graphics Programming 2nd Edition.iso
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Ch13
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Sines.cls
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1999-06-20
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795b
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35 lines
VERSION 1.0 CLASS
BEGIN
MultiUse = -1 'True
Persistable = 0 'NotPersistable
DataBindingBehavior = 0 'vbNone
DataSourceBehavior = 0 'vbNone
MTSTransactionMode = 0 'NotAnMTSObject
END
Attribute VB_Name = "DistortSines"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Option Explicit
Implements Distortion
' The center about which to twist.
Public amplitude As Single
Public period As Single
' Transform the point.
Private Sub Distortion_Transform(X As Single, Y As Single, Z As Single)
Dim A As Single
Dim sy As Single
Dim sz As Single
A = amplitude / 2
sy = Sin(Y * 6.28 / period)
sz = Sin(Z * 6.28 / period)
X = X + A * (sy + sz)
End Sub