From 8ff465aa040e1d8ed93f3fbc0040719b7f593a6d Mon Sep 17 00:00:00 2001
From: Yannik Enss <adnidor@fsmi.uni-karlsruhe.de>
Date: Tue, 4 Feb 2020 19:40:28 +0100
Subject: [PATCH] working multitasking

---
 pixelflut.py | 77 ++++++++++++++++++++++++----------------------------
 1 file changed, 36 insertions(+), 41 deletions(-)

diff --git a/pixelflut.py b/pixelflut.py
index aafdfe2..47172b2 100755
--- a/pixelflut.py
+++ b/pixelflut.py
@@ -31,10 +31,12 @@ args = parser.parse_args()
 
 class DrawThread(threading.Thread):
     def run(self):
-        xfrom = self.args["xfrom"]
-        yfrom = self.args["yfrom"]
-        xto = self.args["xto"]
-        yto = self.args["yto"]
+        xfrom = self._kwargs["xfrom"]
+        yfrom = self._kwargs["yfrom"]
+        xto = self._kwargs["xto"]
+        yto = self._kwargs["yto"]
+
+        print(xfrom, xto, yfrom, yto)
 
         s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
         s.connect((args.host, args.port))
@@ -52,50 +54,43 @@ class DrawThread(threading.Thread):
 
         s.close()
 
-def draw_dumb():
-    for x in range(sizex):
-        for y in range(sizey):
-            value = "%02X%02X%02X%02X"%framebuffer.getpixel((x,y))
-            wf.write("PX {} {} {}\n".format(x,y+args.yoffset,value))
-    while args.repeat:
-        for x in range(sizex):
-            for y in range(sizey):
-                value = "%02X%02X%02X%02X"%framebuffer.getpixel((x,y))
-                wf.write("PX {} {} {}\n".format(x,y+args.yoffset,value))
-
 def draw():
-    buf = bytearray()
-    global framebuffer, old_framebuffer
-    if framebuffer == old_framebuffer:
-        # nothing to draw
-        return
-    for x in range(effectivex):
-        for y in range(effectivey):
-#            if framebuffer.getpixel((x,y))[3] != 0 and framebuffer.getpixel((x,y)) != old_framebuffer.getpixel((x,y)):
-                value = b"%02X%02X%02X%02X"%framebuffer.getpixel((x,y))
-                buf += b"PX %b %b %b\n"%(bytes(str(x), "ascii"),bytes(str(y+args.yoffset), "ascii"),value)
-    s.send(buf)
-    while args.repeat:
-        s.send(buf)
-    old_framebuffer = framebuffer
-            
+    chunkxsize = effectivex//XSPLIT
+    chunkysize = effectivey//YSPLIT
+
+    remainderx = effectivex % XSPLIT
+    remaindery = effectivey % YSPLIT
+
+    xchunks = []
+    ychunks = []
+    remainingx = effectivex
+    remainingy = effectivey
+
+    while remainingx > remainderx:
+        start = effectivex - remainingx
+        remainingx -= chunkxsize
+        stop = effectivex - remainingx
+        xchunks.append((start, stop))
+    xchunks.append((remainingx-effectivex, effectivex))
+
+    while remainingy > remaindery:
+        start = effectivey - remainingy
+        remainingy -= chunkysize
+        stop = effectivey - remainingy
+        ychunks.append((start, stop))
+    ychunks.append((remainingy-effectivey, effectivey))
+
+    for xchunk in xchunks:
+        for ychunk in ychunks:
+            DrawThread(kwargs={"xfrom":xchunk[0], "xto":xchunk[1], "yfrom":ychunk[0], "yto":ychunk[1]}).start()
 
 if args.color:
     framebuffer.paste(ImageColor.getrgb(args.color), (0,0,sizex,sizey))
-    if args.dumb:
-        draw_dumb()
-    else:
-        draw()
+    draw()
 
 elif args.image:
     image = Image.open(str(args.image))
     framebuffer.paste(image)
     effectivex = min(image.size[0], sizex)
     effectivey = min(image.size[1], sizey)
-    if args.dumb:
-        draw_dumb()
-    else:
-        draw()
-
-wf.close()
-s.close()
+    draw()