Pallet generation done, one big thing left: draw function

build.sh

@@ -0,0 +1,5 @@
+rm -v test.py
+echo "demo.lua -> 'test.py'"
+../luajit demo.lua pn.png >> test.py
+rm -v /run/media/user/disk/test.py
+cp -v test.py /run/media/user/disk/

demo.lua

@@ -1,13 +1,14 @@
 local bitmap = require'bitmap' --used to read its content
 
-function int_exa(nb)
+function int_hex(nb)
   if nb < 16 then add = "0"
   else add = "" end
   return [[\x]]..add..string.format("%x", nb)
 end
 
-io.write([[from casioplot import set_pixel, show_screen as S, R
-data=b"]])
+io.write([[from casioplot import set_pixel as S
+from casioplot import show_screen as R
+]])
 
 do --open image
   local cairo = require'cairo' --used to open the file
@@ -20,17 +21,23 @@ local getpixel, setpixel = bitmap.pixel_interface(image_bitmap)
 pallet = {} --will store colors
 pallet_last = 0
 
+io.write("width=", image_infos.width, "\n", [[data=b"]])
+
 for j = 1, image_infos.height, 1 do
   for i = 1, image_infos.width, 1 do
     r, g, b = getpixel(i, j)
-    if not pallet[r.." "..g.." "..b] then
-      pallet[r.." "..g.." "..b] = pallet_last
+    if not pallet[r..","..g..","..b] then
+      pallet[r..","..g..","..b] = pallet_last
       pallet_last = pallet_last + 1
     end
-    io.write(int_exa(pallet[r.." "..g.." "..b]))
+    io.write(int_hex(pallet[r..","..g..","..b]))
   end
 end
 
-io.write([["
-R()
-]])
+--let's write the pallet
+io.write("\"\npallet=(None")
+for i, _ in pairs(pallet) do
+  io.write(",(", i, ")")
+end
+
+io.write(")\nR()")