by Mikael Rickan (1 Submission)
Category: Custom Controls/Forms/Menus
Compatability: Visual Basic 3.0
Difficulty: Unknown Difficulty
Date Added: Wed 3rd February 2021
Rating: 
(15 Votes)
Draws a nice 3D-Starfield in a Form (uses X,Y,Z positions)
width a very short code
Shades each star depending on the distance.
Assumes
Create an Timer for the form called Timer1
Side Effects
None (maybe some flickering)
API Declarations
VBcoders'
Dim X(100), Y(100), Z(100) As Integer
Dim tmpX(100), tmpY(100), tmpZ(100) As Integer
Dim K As Integer
Dim Zoom As Integer
Dim Speed As Integer
Private Sub Form_Activate()
Speed = -1
K = 2038
Zoom = 256
Timer1.Interval = 1
For i = 0 To 100
X(i) = Int(Rnd * 1024) - 512
Y(i) = Int(Rnd * 1024) - 512
Z(i) = Int(Rnd * 512) - 256
Next i
End Sub
Private Sub Timer1_Timer()
For i = 0 To 100
Circle (tmpX(i), tmpY(i)), 5, BackColor
Z(i) = Z(i) + Speed
If Z(i) > 255 Then Z(i) = -255
If Z(i) < -255 Then Z(i) = 255
tmpZ(i) = Z(i) + Zoom
tmpX(i) = (X(i) * K / tmpZ(i)) + (Form1.Width / 2)
tmpY(i) = (Y(i) * K / tmpZ(i)) + (Form1.Height / 2)
Radius = 1
StarColor = 256 - Z(i)
Circle (tmpX(i), tmpY(i)), 5, RGB(StarColor, StarColor, StarColor)
Next i
End Sub
