Random Tessellations

[bplus]

Inspired by Charlie's BAM version I started from scratch for QB64 version with added full colorization mode.
Use b key to toggle color modes or esc to quit, any other key shows another random tile tessellated screen:

Code: (Select All)

_Title "Tessellation use b to toggle to 1 color and black or full color"
' b+ 2023-05-09 - Tiling with a pattern
'
' Inspired by Charlie's BAM example:
' https://staging.qb64phoenix.com/showthread.php?tid=1646&pid=15772#pid15772
'
' But I also wanted to try a colorized version.
'
'  So use b key to toggle between:
'  1. a mod of Charlies version with different pixel block size with black backgrounds
'  2. the colorized version which reminds me of Magic Eye Art
'
DefLng A-Z
Screen _NewImage(800, 600, 12) ' only 16 colors here
_ScreenMove 250, 50
Dim Shared Pix '   Pix is number of pixels to Tile side
Dim Shared Scale ' Change a pixel to a bigger square block for not so subtle patterns
Dim Shared Tile '  Handle that stores Tile Image in memory to call up with _PutImage
Dim Shared B '     Set color mode from Full 16 colors Rainbow to 1 like for printing a label
Do
    If InKey$ = "b" Then B = 1 - B '    toggle coloring mode on a b keypress
    MakeTile '                          create a new random tiling pattern
    Tessellate '                        tile the screen with it
    _PrintString (740, 580), "ZZZ..." ' Show user we are sleeping awaiting a key press
    Sleep
Loop Until _KeyDown(27) ' quit when detect escape key on sleep

Sub MakeTile ' make a random tile to Tesselate according to B Mode coloring
    Pix = Int(Rnd * 9) + 4 '           sets tile size: pix X pix or a 4X4 to 12X12 Tile coloring
    Scale = Int(Rnd * 6) + 4 '         to change pixels to square blocks
    If Tile Then _FreeImage Tile '     throw old image away
    Tile = _NewImage(Scale * Pix - 1, Scale * Pix - 1) '   make new one
    _Dest Tile '                       draw in the memory area Tile not on screen
    oneColor = Int(Rnd * 15) + 1 '     one color and black background for B Mode
    For y = 0 To Scale * Pix - 1 Step Scale
        For x = 0 To Scale * Pix - 1 Step Scale
            If B Then
                If Rnd < .5 Then c = 0 Else c = oneColor 'one color and black background for B Mode
            Else
                c = Int(Rnd * 16)
            End If
            Line (x, y)-Step(Scale, Scale), c, BF ' draw square that is scaled pixel
        Next
    Next
    _Dest 0
End Sub

Sub Tessellate ' just covering the screen with our Tile
    For y = 0 To _Height Step Scale * Pix
        For x = 0 To _Width Step Scale * Pix
            _PutImage (x, y)-Step(Scale * Pix - 1, Scale * Pix - 1), Tile, 0
        Next
    Next
End Sub