Summer LASER Challenge

[SierraKen]

And here is one Bplus made back then. This shows 3 shapes that fade, etc. 

Code: (Select All)

_Title "b+ dimmer switch raise and lower mouse"
Screen _NewImage(1024, 700, 32)
_Delay .25
_ScreenMove _Middle

Type vec2
    x As Single
    y As Single
End Type

ReDim vert(1 To 4024) As vec2

'First Box
For i = 50 To 350 Step 25
    vi = vi + 1
    vert(vi).x = 50
    vert(vi).y = i
    vi = vi + 1
    vert(vi).x = 350
    vert(vi).y = i
    If i <> 50 And i <> 350 Then
        vi = vi + 1
        vert(vi).x = i
        vert(vi).y = 50
        vi = vi + 1
        vert(vi).x = i
        vert(vi).y = 350
    End If
Next
'Second Box
For i = 250 To 650 Step 25
    vi = vi + 1
    vert(vi).x = 250
    vert(vi).y = i
    vi = vi + 1
    vert(vi).x = 650
    vert(vi).y = i
    If i <> 250 And i <> 650 Then
        vi = vi + 1
        vert(vi).x = i
        vert(vi).y = 250
        vi = vi + 1
        vert(vi).x = i
        vert(vi).y = 650
    End If
Next
For a = 0 To _Pi(2) - .01 Step _Pi(1 / 30)
    vi = vi + 1
    vert(vi).x = 750 + 200 * Cos(a)
    vert(vi).y = 350 + 200 * Sin(a)
Next


Do
    Cls
    While _MouseInput: Wend
    my = _MouseY / _Height * 12
    For power = 1 To my
        For i = 1 To vi
            For r = 1 To 25
                If vert(i).x = 0 And vert(i).y = 0 Then 'where is that coming from?
                    Locate 1, 1: Print i
                Else
                    fcirc vert(i).x, vert(i).y, r, _RGBA32(240, 230, 255, 3)
                End If
            Next
        Next
    Next
    _Display
    _Limit 60
Loop Until _KeyDown(27)


'from Steve Gold standard
Sub fcirc (CX As Integer, CY As Integer, R As Integer, C As _Unsigned Long)
    Dim Radius As Integer, RadiusError As Integer
    Dim X As Integer, Y As Integer
    Radius = Abs(R): RadiusError = -Radius: X = Radius: Y = 0
    If Radius = 0 Then PSet (CX, CY), C: Exit Sub
    Line (CX - X, CY)-(CX + X, CY), C, BF
    While X > Y
        RadiusError = RadiusError + Y * 2 + 1
        If RadiusError >= 0 Then
            If X <> Y + 1 Then
                Line (CX - Y, CY - X)-(CX + Y, CY - X), C, BF
                Line (CX - Y, CY + X)-(CX + Y, CY + X), C, BF
            End If
            X = X - 1
            RadiusError = RadiusError - X * 2
        End If
        Y = Y + 1
        Line (CX - X, CY - Y)-(CX + X, CY - Y), C, BF
        Line (CX - X, CY + Y)-(CX + X, CY + Y), C, BF
    Wend
End Sub