by Omer Kornitz (1 Submission)
Category: Custom Controls/Forms/Menus
Compatability: Visual Basic 3.0
Difficulty: Unknown Difficulty
Date Added: Wed 3rd February 2021
Rating: 
(3 Votes)
This program rotates a 3d cube to the 4 directions, using a translation code,
and also has a zoom in/out option (control it with: W, A, D, X, 1 & 2)
Assumes
You have to create a Timer and left it named Timer1.
VBcodersDim ww As Integer
Dim Ixy_angle, Iz_angle, dYYshift, dXXshift, csx, csy As Integer
Dim cosa, cosb, sina, sinb, coscosba, cossinba, sincosba, sinsinba, zoom, pi180 As Double
'This is the translation function
Private Sub posxy(x1 As Double, y1 As Double, z1 As Double)
Dim Yy, Xx As Double
Yy = zoom / (10# - (z1 * cosb + y1 * sinsinba - x1 * sincosba))
Xx = 100# * (1# + (y1 * cosa + x1 * sina) * Yy)
csx = Int(dXXshift) + Int(Xx)
Xx = 100# * (1# + (y1 * cossinba - x1 * coscosba - z1 * sinb) * Yy)
csy = Int(dYYshift) + Int(Xx)
End Sub
Sub rollup()
Iz_angle = (Iz_angle + 5)
cosb = Cos(Iz_angle * pi180)
sinb = Sin(Iz_angle * pi180)
sinsinba = sinb * sina
sincosba = sinb * cosa
cossinba = sina * cosb
coscosba = cosb * cosa
Form1.Cls
NewPaint
End Sub
Sub rolldown()
Iz_angle = (Iz_angle - 5)
cosb = Cos(Iz_angle * pi180)
sinb = Sin(Iz_angle * pi180)
sinsinba = sinb * sina
sincosba = sinb * cosa
cossinba = sina * cosb
coscosba = cosb * cosa
Form1.Cls
NewPaint
End Sub
Sub rollright()
Ixy_angle = (Ixy_angle - 5)
cosa = Cos(Ixy_angle * pi180)
sina = Sin(Ixy_angle * pi180)
sinsinba = sinb * sina
sincosba = sinb * cosa
cossinba = sina * cosb
coscosba = cosb * cosa
Form1.Cls
NewPaint
End Sub
Sub rollleft()
Ixy_angle = (Ixy_angle + 5)
cosa = Cos(Ixy_angle * pi180)
sina = Sin(Ixy_angle * pi180)
sinsinba = sinb * sina
sincosba = sinb * cosa
cossinba = sina * cosb
coscosba = cosb * cosa
Form1.Cls
NewPaint
End Sub
'This subroutine identifies the code of the pressed key
Private Sub Form_KeyPress(KeyAscii As Integer)
Select Case KeyAscii
Case 97
ww = 1
Case 100
ww = 2
Case 119
ww = 3
Case 120
ww = 4
Case 49
ww = 5
Case 50
ww = 6
Case 27
Unload Me
End Select
End Sub
Private Sub Form_Load()
pi180 = 0.01745392
Ixy_angle = 270
Iz_angle = 85
cosa = Cos(Ixy_angle * pi180)
sina = Sin(Ixy_angle * pi180)
cosb = Cos(Iz_angle * pi180)
sinb = Sin(Iz_angle * pi180)
sinsinba = sinb * sina
sincosba = sinb * cosa
cossinba = sina * cosb
coscosba = cosb * cosa
dYYshift = 80
dXXshift = 80
zoom = 6#
NewPaint
End Sub
'This subroutine draws the cube using the translation code
Sub NewPaint()
posxy -1, -1, -1: xxx = csx: yyy = csy:
posxy -1, 1, -1: Line (xxx, yyy)-(csx, csy), QBColor(15): x = csx: y = csy
posxy -1, 1, 1: Line (x, y)-(csx, csy), QBColor(15): x = csx: y = csy
posxy -1, -1, 1: Line (x, y)-(csx, csy), QBColor(15): Line (csx, csy)-(xxx, yyy), QBColor(15)
posxy 1, -1, -1: xxx = csx: yyy = csy:
posxy 1, 1, -1: Line (xxx, yyy)-(csx, csy), QBColor(15): x = csx: y = csy
posxy 1, 1, 1: Line (x, y)-(csx, csy), QBColor(15): x = csx: y = csy
posxy 1, -1, 1: Line (x, y)-(csx, csy), QBColor(15): Line (csx, csy)-(xxx, yyy), QBColor(15)
posxy 1, -1, -1: x = csx: y = csy: posxy -1, -1, -1: Line (x, y)-(csx, csy), QBColor(15)
posxy 1, -1, 1: x = csx: y = csy: posxy -1, -1, 1: Line (x, y)-(csx, csy), QBColor(15)
posxy 1, 1, 1: x = csx: y = csy: posxy -1, 1, 1: Line (x, y)-(csx, csy), QBColor(15)
posxy 1, 1, -1: x = csx: y = csy: posxy -1, 1, -1: Line (x, y)-(csx, csy), QBColor(15)
End Sub
'This subroutine reads the value of the next rotation / zoom
Private Sub Timer1_Timer()
Select Case ww
Case 1
rollleft
Case 2
rollright
Case 3
rollup
Case 4
rolldown
Case 5
zoom = zoom * 1.01
Form1.Cls
NewPaint
Case 6
zoom = zoom * 0.99
Form1.Cls
NewPaint
End Select
End Sub
