3D-Stars in a Form
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.
Original Author: Mikael Rickan
Assumptions
Create an Timer for the form called Timer1
Side Effects
None (maybe some flickering)
API Declarations
Code
'
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
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