├── Source
    ├── fonts
    │   ├── Roobert-11-Medium-table-22-22.png
    │   └── Roobert-11-Medium.fnt
    ├── pdxinfo
    └── main.lua
├── README.md
└── LICENSE


/Source/fonts/Roobert-11-Medium-table-22-22.png:
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https://raw.githubusercontent.com/gingerbeardman/mandala/HEAD/Source/fonts/Roobert-11-Medium-table-22-22.png


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/Source/pdxinfo:
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1 | name=Mandala
2 | author=Matt Sephton
3 | description=Logic Operation Pixel Patterns
4 | bundleID=com.gingerbeardman.mandala
5 | version=1.01
6 | buildNumber=101
7 | 


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/README.md:
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 1 | # mandala
 2 | 
 3 | A little playground for testing pixel logic patterns on [Playdate](https://play.date)
 4 | 
 5 | ![https://i.imgur.com/OQHNwm7.gif](https://i.imgur.com/OQHNwm7.gif)
 6 | 
 7 | Generating a screen takes a couple of seconds on Playdate hardware as it requires per-pixel processing of the entire 400x240 screen = 96,000 pixels. As such, these effects are not currently suitable for real-time use, but should rather be pre-rendered or cached in some way. There may be some optimisations that can be made to improve the situation.
 8 | 
 9 | Or you can run it full speed in Playdate Simulator. 
10 | 
11 | ## More info
12 | - https://twitter.com/aemkei/status/1378106731386040322
13 | 
14 | ## License
15 | [MIT LICENSE](LICENSE)
16 | 


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/LICENSE:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2023 Matt Sephton
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


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/Source/main.lua:
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  1 | -- https://twitter.com/aemkei/status/1378106731386040322?s=46&t=vAQ328oQf-s81-tV9T-wKQ
  2 | 
  3 | import "CoreLibs/sprites"
  4 | 
  5 | local gfx <const> = playdate.graphics
  6 | 
  7 | gfx.setBackgroundColor(gfx.kColorBlack)
  8 | playdate.display.setRefreshRate(10)
  9 | 
 10 | local playerSprite = nil
 11 | local W = playdate.display.getWidth()
 12 | local H = playdate.display.getHeight()
 13 | 
 14 | fnt = gfx.font.new("fonts/Roobert-11-Medium")
 15 | 
 16 | local imgSprite = gfx.image.new(W,H)
 17 | local imgHud = gfx.image.new(W//3,H//8)
 18 | 
 19 | spr = gfx.sprite.new( imgSprite )
 20 | spr:moveTo( 0,0 )
 21 | spr:setCenter( 0,0 )
 22 | spr:add()
 23 | 
 24 | hud = gfx.sprite.new( imgHud )
 25 | hud:moveTo( 15,190 )
 26 | hud:setCenter( 0,0 )
 27 | hud:add()
 28 | 
 29 | function p_xor_mod(x,y,z) return (x ~ y) % z end
 30 | function p_or_mod(x,y,z) return (x | y) % z end
 31 | function p_mul_and(x,y,z) return (x * y) & z end
 32 | function p_xor_lsh(x,y,z) return (x ~ y) << z end
 33 | function p_mul_mod(x,y,z) return (x * z) % (y+1) end
 34 | -- function p_mul_mod_offset(x,y,z) return ((x-W//2) * z) % ((y-H//2)+1) end
 35 | 
 36 | local allFuncs = {p_xor_mod, p_or_mod, p_mul_and, p_xor_lsh, p_mul_mod} --p_mul_mod_offset
 37 | local allLabels = {"(x ~ y) %% %s", "(x | y) %% %s", "(x * y) & %s", "(x ~ y) << %s", "(x * %s) %% y", "((x-200) * %s) %% (y-120)"}
 38 | 
 39 | local current = 1
 40 | local f = allFuncs[current]
 41 | local ft = allLabels[current]
 42 | local delta = 1
 43 | local var = 5
 44 | local changed = true
 45 | 
 46 | function drawPixels()
 47 | 	gfx.lockFocus(imgSprite)
 48 | 	for x=0,W do
 49 | 		for y=0,H do
 50 | 			p = f(x,y, var)
 51 | 			if p == 0 then
 52 | 				gfx.setColor(gfx.kColorWhite)
 53 | 			else
 54 | 				gfx.setColor(gfx.kColorBlack)
 55 | 			end
 56 | 			gfx.drawPixel(x,y)
 57 | 		end
 58 | 	end
 59 | 	gfx.unlockFocus()
 60 | 
 61 | 	changed = false
 62 | end
 63 | 
 64 | function drawHud()
 65 | 	gfx.lockFocus(imgHud)
 66 | 	gfx.clear(gfx.kColorWhite)
 67 | 	fnt:drawText(string.format(ft,var), 5,5)
 68 | 	gfx.unlockFocus()
 69 | 
 70 | 	changed = false
 71 | end
 72 | 
 73 | function math.ring(a, min, max)
 74 | 	if min > max then
 75 | 		min, max = max, min
 76 | 	end
 77 | 	return min + (a-min)%(max-min)
 78 | end
 79 | 
 80 | function math.ring_int(a, min, max)
 81 | 	return math.ring(a, min, max+1)
 82 | end
 83 | 
 84 | function setVar(m)
 85 | 	var = m
 86 | 	changed = true
 87 | end
 88 | 
 89 | function funcNext()
 90 | 	current = math.ring_int(current+1,1,#allFuncs)
 91 | 	ft = allLabels[current]
 92 | 	
 93 | 	changed = true
 94 | 
 95 | 	return allFuncs[current]
 96 | end
 97 | 
 98 | function funcPrev()
 99 | 	current = math.ring_int(current-1,1,#allFuncs)
100 | 	ft = allLabels[current]
101 | 	
102 | 	changed = true
103 | 
104 | 	return allFuncs[current]
105 | end
106 | 
107 | local myInputHandlers = {
108 | 
109 | 	AButtonDown = function()
110 | 		delta = 5
111 | 	end,
112 | 	AButtonUp = function()
113 | 		delta = 1
114 | 	end,
115 | 	BButtonDown = function()
116 | 		delta = 10
117 | 	end,
118 | 	BButtonUp = function()
119 | 		delta = 1
120 | 	end,
121 | 	upButtonDown = function()
122 | 		setVar(var + delta)
123 | 	end,
124 | 	downButtonDown = function()
125 | 		setVar(var - delta)
126 | 	end,
127 | 	leftButtonDown = function()
128 | 		f = funcPrev()
129 | 	end,
130 | 	rightButtonDown = function()
131 | 		f = funcNext()
132 | 	end,
133 | 
134 | 	cranked = function(change, acceleratedChange)
135 | 	end,
136 | }
137 | playdate.inputHandlers.push(myInputHandlers)
138 | 
139 | function playdate.update()
140 | 	if changed == true then
141 | 		drawPixels()
142 | 		drawHud()
143 | 	end
144 | 
145 | 	gfx.sprite.update()
146 | end
147 | 


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/Source/fonts/Roobert-11-Medium.fnt:
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  1 | tracking=1
  2 | space	3
  3 | !		2
  4 | "		6
  5 | #		14
  6 | $		11
  7 | %		15
  8 | &		13
  9 | '		2
 10 | (		5
 11 | )		5
 12 | *		8
 13 | +		10
 14 | ,		3
 15 | -		8
 16 | .		2
 17 | /		9
 18 | 0		12
 19 | 1		5
 20 | 2		11
 21 | 3		12
 22 | 4		12
 23 | 5		11
 24 | 6		12
 25 | 7		11
 26 | 8		11
 27 | 9		12
 28 | :		2
 29 | ;		4
 30 | <		9
 31 | =		11
 32 | >		9
 33 | ?		9
 34 | @		18
 35 | A		13
 36 | B		11
 37 | C		14
 38 | D		12
 39 | E		10
 40 | F		10
 41 | G		14
 42 | H		12
 43 | I		2
 44 | J		5
 45 | K		12
 46 | L		9
 47 | M		15
 48 | N		11
 49 | O		15
 50 | P		10
 51 | Q		15
 52 | R		10
 53 | S		11
 54 | T		12
 55 | U		12
 56 | V		12
 57 | W		18
 58 | X		11
 59 | Y		10
 60 | Z		11
 61 | [		5
 62 | \		9
 63 | ]		5
 64 | ^		7
 65 | _		11
 66 | `		3
 67 | a		9
 68 | b		10
 69 | c		10
 70 | d		10
 71 | e		10
 72 | f		7
 73 | g		10
 74 | h		9
 75 | i		3
 76 | j		4
 77 | k		10
 78 | l		2
 79 | m		16
 80 | n		9
 81 | o		11
 82 | p		10
 83 | q		10
 84 | r		6
 85 | s		8
 86 | t		7
 87 | u		9
 88 | v		8
 89 | w		14
 90 | x		9
 91 | y		10
 92 | z		9
 93 | {		6
 94 | |		2
 95 | }		6
 96 | ~		10
 97 | ¥		10
 98 | …		12
 99 | ™		16
100 | ‼		6
101 | ©		15
102 | ®		15
103 | �		15
104 | Ⓐ		18
105 | Ⓑ		18
106 | 🌐		18
107 | ›		14
108 | ▸		12
109 | ⊙		18
110 | ‘		3
111 | ’		3
112 | “		6
113 | ”		6
114 | ac		0
115 | ad		0
116 | ae		0
117 | af		-1
118 | ag		0
119 | ap		0
120 | ar		1
121 | at		-1
122 | au		0
123 | av		-1
124 | aw		-1
125 | ay		-1
126 | b,		-1
127 | b.		-1
128 | bl		0
129 | br		0
130 | bu		0
131 | by		-1
132 | ca		0
133 | ch		0
134 | ck		0
135 | d,		-1
136 | d.		0
137 | da		0
138 | dc		0
139 | de		0
140 | dg		0
141 | do		0
142 | dt		0
143 | du		0
144 | dv		0
145 | dw		0
146 | dy		0
147 | e,		-1
148 | e.		-1
149 | ea		0
150 | ei		0
151 | el		0
152 | em		0
153 | en		0
154 | ep		0
155 | er		0
156 | et		-1
157 | eu		0
158 | ev		-1
159 | ew		-1
160 | ey		-1
161 | f,		-2
162 | f.		-2
163 | fa		-1
164 | fe		-1
165 | ff		-2
166 | fi		0
167 | fl		-1
168 | fo		-2
169 | g,		0
170 | g.		0
171 | ga		0
172 | ge		0
173 | gg		0
174 | gh		0
175 | gl		0
176 | go		0
177 | hc		0
178 | hd		0
179 | he		0
180 | hg		0
181 | ho		0
182 | hp		0
183 | ht		-1
184 | hu		0
185 | hv		-1
186 | hw		-1
187 | hy		-1
188 | ic		-1
189 | id		-1
190 | ie		-1
191 | ig		-1
192 | io		-1
193 | ip		-1
194 | it		-2
195 | iu		-1
196 | iv		-1
197 | j,		0
198 | j.		0
199 | ja		0
200 | je		0
201 | jo		0
202 | ju		0
203 | ka		-2
204 | kc		-2
205 | kd		-2
206 | ke		-2
207 | kg		-2
208 | ko		-2
209 | la		0
210 | lc		0
211 | ld		0
212 | le		0
213 | lf		0
214 | lg		0
215 | lo		0
216 | Lo		-1
217 | lp		0
218 | lq		0
219 | lu		0
220 | lv		0
221 | lw		0
222 | ly		0
223 | ma		0
224 | mc		0
225 | md		0
226 | me		0
227 | mg		0
228 | mn		0
229 | mo		0
230 | mp		0
231 | mt		-1
232 | mu		0
233 | mv		-1
234 | my		-1
235 | nc		0
236 | nd		0
237 | ne		0
238 | ng		0
239 | no		0
240 | np		0
241 | nt		-1
242 | nu		0
243 | nv		-1
244 | nw		-1
245 | ny		-1
246 | o,		-2
247 | o.		-1
248 | ob		0
249 | of		-2
250 | oh		0
251 | oj		-2
252 | ok		0
253 | ol		0
254 | om		0
255 | on		0
256 | op		0
257 | or		0
258 | ou		0
259 | ov		-1
260 | ow		-1
261 | ox		-1
262 | oy		-1
263 | p,		-1
264 | p.		-1
265 | pa		0
266 | ph		0
267 | pi		0
268 | pl		0
269 | pp		0
270 | pu		0
271 | qu		0
272 | r,		-3
273 | r.		-2
274 | ra		-1
275 | rd		-1
276 | re		-1
277 | rg		-1
278 | rk		0
279 | rl		0
280 | rm		0
281 | rn		0
282 | ro		-2
283 | rq		-1
284 | rr		0
285 | rt		-1
286 | rv		0
287 | ry		0
288 | s,		-1
289 | s.		-1
290 | sh		0
291 | st		-1
292 | su		0
293 | t,		0
294 | t.		1
295 | ta		1
296 | td		0
297 | te		0
298 | th		1
299 | ti		1
300 | tl		1
301 | to		0
302 | ua		0
303 | uc		0
304 | ud		0
305 | ue		0
306 | ug		0
307 | uo		0
308 | up		1
309 | uq		0
310 | ur		1
311 | ut		0
312 | uv		0
313 | uw		0
314 | uy		0
315 | v,		-2
316 | v.		-2
317 | va		0
318 | vb		0
319 | vc		-1
320 | vd		-1
321 | ve		-1
322 | vg		-1
323 | vo		-1
324 | vv		0
325 | vy		-1
326 | w,		-2
327 | w.		-1
328 | wa		-1
329 | wd		-1
330 | we		-1
331 | wg		-1
332 | wh		0
333 | wo		-1
334 | wx		-1
335 | xa		-1
336 | xe		-1
337 | xo		-1
338 | y,		-3
339 | y.		-2
340 | ya		-1
341 | yc		-1
342 | yd		-1
343 | ye		-1
344 | Yo		-2
345 | yo		-1
346 | LO		-2
347 | AT		-3
348 | AY		-3
349 | //		-4
350 | /d		-2
351 | /p		-1
352 | tp		1
353 | t:		1
354 | /w		-1


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