Интерфейс Рабочей Формы
Интерфейс программы (в действии)
Исходный (программный код)
Private FPS As Long
Private all_stop As Boolean
Private cube As Object3D
Private Sub Form_Load()
Call LoadObject(cube)
all_stop = False
End Sub
Private Sub Form_Unload (Cancel As Integer)
all_stop = True
End Sub
Private Sub Timer1_Timer()
'
Dim temp As Object3D
Dim ang As Single
'
Timer1. Enabled = False
Do
temp = cube
'
Me. Cls
Call ScaleObject (10, 10, 10, temp)
Call RotateObject (ang, -0.5, 0, temp)
Call TranslateObject (0, 0, 50, temp)
Call ProjectObject (temp, Me)
'
Call DisplayObject (temp, Me)
'
FPS = FPS + 1
'
ang = ang + 0.02: If ang > 6.282 Then ang = 0
'
DoEvents
'
Loop Until all_stop
'
End Sub
Private Sub Timer2_Timer()
Me. Caption = «VB/3D – Tutorial #1 – FPS =» + Str$(FPS)
'
FPS = 0
'
End Sub
Private Type Vertex3D
'
x As Single
y As Single
z As Single
'
sx As Long
sy As Long
'
End Type
'
Private Type Polygon3D
'
v_pointer(2) As Long
'
colr As Long
'
End Type
'
Public Type Object3D
'
vertex() As Vertex3D
polygon() As Polygon3D
'
End Type
Public Sub LoadObject (obj As Object3D)
ReDim obj.vertex(7), obj.polygon(11)
obj.vertex(0).x = -1: obj.vertex(0).y = -1: obj.vertex(0).z = -1
obj.vertex(1).x = -1: obj.vertex(1).y = -1: obj.vertex(1).z = 1
obj.vertex(2).x = 1: obj.vertex(2).y = -1: obj.vertex(2).z = 1
obj.vertex(3).x = 1: obj.vertex(3).y = -1: obj.vertex(3).z = -1
obj.vertex(4).x = -1: obj.vertex(4).y = 1: obj.vertex(4).z = -1
obj.vertex(5).x = -1: obj.vertex(5).y = 1: obj.vertex(5).z = 1
obj.vertex(6).x = 1: obj.vertex(6).y = 1: obj.vertex(6).z = 1
obj.vertex(7).x = 1: obj.vertex(7).y = 1: obj.vertex(7).z = -1
obj.polygon(0).v_pointer(0) = 0: obj.polygon(0).v_pointer(1) = 2: obj.polygon(0).v_pointer(2) = 1
obj.polygon(0).colr = RGB (255, 0, 0)
obj.polygon(1).v_pointer(0) = 0: obj.polygon(1).v_pointer(1) = 3: obj.polygon(1).v_pointer(2) = 2
obj.polygon(1).colr = RGB (255, 0, 0)
obj.polygon(2).v_pointer(0) = 4: obj.polygon(2).v_pointer(1) = 0: obj.polygon(2).v_pointer(2) = 1
obj.polygon(2).colr = RGB (255, 0, 0)
obj.polygon(3).v_pointer(0) = 4: obj.polygon(3).v_pointer(1) = 1: obj.polygon(3).v_pointer(2) = 5
obj.polygon(3).colr = RGB (255, 0, 0)
obj.polygon(4).v_pointer(0) = 5: obj.polygon(4).v_pointer(1) = 1: obj.polygon(4).v_pointer(2) = 2
obj.polygon(4).colr = RGB (255, 0, 0)
obj.polygon(5).v_pointer(0) = 5: obj.polygon(5).v_pointer(1) = 2: obj.polygon(5).v_pointer(2) = 6
obj.polygon(5).colr = RGB (255, 0, 0)
obj.polygon(6).v_pointer(0) = 7: obj.polygon(6).v_pointer(1) = 2: obj.polygon(6).v_pointer(2) = 3
obj.polygon(6).colr = RGB (255, 0, 0)
obj.polygon(7).v_pointer(0) = 7: obj.polygon(7).v_pointer(1) = 6: obj.polygon(7).v_pointer(2) = 2
obj.polygon(7).colr = RGB (255, 0, 0)
obj.polygon(8).v_pointer(0) = 4: obj.polygon(8).v_pointer(1) = 5: obj.polygon(8).v_pointer(2) = 6
obj.polygon(8).colr = RGB (255, 0, 0)
obj.polygon(9).v_pointer(0) = 4: obj.polygon(9).v_pointer(1) = 6: obj.polygon(9).v_pointer(2) = 7
obj.polygon(9).colr = RGB (255, 0, 0)
obj.polygon(10).v_pointer(0) = 4: obj.polygon(10).v_pointer(1) = 3: obj.polygon(10).v_pointer(2) = 0
obj.polygon(10).colr = RGB (255, 0, 0)
obj.polygon(11).v_pointer(0) = 4: obj.polygon(11).v_pointer(1) = 7: obj.polygon(11).v_pointer(2) = 3
obj.polygon(11).colr = RGB (255, 0, 0)
'
End Sub
Public Sub DisplayObject (obj As Object3D, frm As Object)
Dim poly As Long
For poly = 0 To UBound (obj.polygon())
Call DrawTriangle (obj, poly, frm)
Next
End Sub
Private Sub DrawTriangle (obj As Object3D, poly As Long, frm As Object)
Dim x0 As Long, y0 As Long
Dim x1 As Long, y1 As Long
Dim x2 As Long, y2 As Long
x0 = obj.vertex (obj.polygon(poly).v_pointer(0)).sx
y0 = obj.vertex (obj.polygon(poly).v_pointer(0)).sy
x1 = obj.vertex (obj.polygon(poly).v_pointer(1)).sx
y1 = obj.vertex (obj.polygon(poly).v_pointer(1)).sy
x2 = obj.vertex (obj.polygon(poly).v_pointer(2)).sx
y2 = obj.vertex (obj.polygon(poly).v_pointer(2)).sy
frm. Line (x0, y0) – (x1, y1), obj.polygon(poly).colr
frm. Line – (x2, y2), obj.polygon(poly).colr
frm. Line – (x0, y0), obj.polygon(poly).colr
End Sub
Public Sub ProjectObject (obj As Object3D, frm As Object)
Dim pnt As Long, dz As Single
For pnt = 0 To UBound (obj.vertex())
dz = obj.vertex(pnt).z: If dz <= 0 Then dz = 0.001
obj.vertex(pnt).sx = (frm. ScaleWidth / 2) + ((obj.vertex(pnt).x * 300) / dz)
obj.vertex(pnt).sy = (frm. ScaleHeight / 2) + ((obj.vertex(pnt).y * 300) / dz)
Next
End Sub
Public Sub RotateObject (yaw As Single, pit As Single, rol As Single, obj As Object3D)
Dim pnt As Long
Dim x0 As Single, y0 As Single, z0 As Single
Dim x1 As Single, y1 As Single, z1 As Single
Dim x2 As Single, y2 As Single, z2 As Single
'
For pnt = 0 To UBound (obj.vertex())
x0 = Cos(yaw) * obj.vertex(pnt).x + Sin(yaw) * obj.vertex(pnt).z
y0 = obj.vertex(pnt).y
z0 = Sin(yaw) * obj.vertex(pnt).x – Cos(yaw) * obj.vertex(pnt).z
x1 = x0
y1 = Cos(pit) * y0 + Sin(pit) * z0
z1 = Sin(pit) * y0 – Cos(pit) * z0
x2 = Cos(rol) * x1 + Sin(rol) * y1
y2 = Sin(rol) * x1 – Cos(rol) * y1
z2 = z1
obj.vertex(pnt).x = x2
obj.vertex(pnt).y = y2
obj.vertex(pnt).z = z2
Next
End Sub
Public Sub ScaleObject (xs As Single, ys As Single, zs As Single, obj As Object3D)
Dim pnt As Long
For pnt = 0 To UBound (obj.vertex())
obj.vertex(pnt).x = obj.vertex(pnt).x * xs
obj.vertex(pnt).y = obj.vertex(pnt).y * ys
obj.vertex(pnt).z = obj.vertex(pnt).z * zs
Next
End Sub
Public Sub TranslateObject (tx As Long, ty As Long, tz As Long, obj As Object3D)
Dim pnt As Long
For pnt = 0 To UBound (obj.vertex())
obj.vertex(pnt).x = obj.vertex(pnt).x + tx
obj.vertex(pnt).y = obj.vertex(pnt).y + ty
obj.vertex(pnt).z = obj.vertex(pnt).z + tz
Next
End Sub
Private FPS As Long
Private all_stop As Boolean
Private cube As Object3D
Private Sub Form_Load()
Call LoadObject(cube)
all_stop = False
End Sub
Private Sub Form_Unload (Cancel As Integer)
all_stop = True
End Sub
Private Sub Timer1_Timer()
'
Dim temp As Object3D
Dim ang As Single
'
Timer1. Enabled = False
Do
temp = cube
'
Me. Cls
Call ScaleObject (10, 10, 10, temp)
Call RotateObject (ang, -0.5, 0, temp)
Call TranslateObject (0, 0, 50, temp)
Call ProjectObject (temp, Me)
'
Call DisplayObject (temp, Me)
'
FPS = FPS + 1
'
ang = ang + 0.02: If ang > 6.282 Then ang = 0
'
DoEvents
'
Loop Until all_stop
'
End Sub
Private Sub Timer2_Timer()
Me. Caption = «VB/3D – Tutorial #1 – FPS =» + Str$(FPS)
'
FPS = 0
'
End Sub
Программный код программы по Созданию 3D – графики средствами языка программирования Visual Basic, состоит из переменных, функций, циклов, различных математических функций, операторов.
Заключение
Программа по созданию 3D-графики средствами Visual Basic 6.0, состоит из экранной формы, на которых расположено 2 элемента управления Timer (Timer1, Timer2)
Окно Формы
Окно формы, часто называемое просто «форма», является главным элементом приложения. Форма представляет собой контейнер для элементов управления. Точки сетки на форме только помогают размещению элементов и при работе приложения не видны. При запуске Visual Basic открывающаяся на экране форма не содержит элементов управления. После щелчка на пиктограмме требуемого элемента управления курсор мыши принимает форму крестика. Теперь нужно указать в форме начальный угол элемента управления, нажать левую кнопку мыши и, не отпуская ее, установить размер элемента. После достижения нужного размера кнопка отпускается и в форме появляется выбранный элемент управления.