From b3d151b60e285339a4f39708f5dce818151a8419 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter@sugarlabs.org>
Date: Thu, 12 Aug 2010 22:09:54 +0000
Subject: read pixel block

---
(limited to 'TurtleArt/talogo.py')

diff --git a/TurtleArt/talogo.py b/TurtleArt/talogo.py
index 318bb7e..84da6d3 100644
--- a/TurtleArt/talogo.py
+++ b/TurtleArt/talogo.py
@@ -315,6 +315,7 @@ class LogoCode:
         'purple':[0, lambda self: 90],
         'push':[1, lambda self, x: self.prim_push(x)],
         'random':[2, lambda self, x, y: tarandom(x, y)],
+        'readpixel':[0, lambda self: self.read_pixel()],
         'red':[0, lambda self: 0],
         'repeat':[2, self.prim_repeat, True],
         'right':[1, lambda self, x: self.tw.canvas.right(x)],
@@ -1170,6 +1171,13 @@ class LogoCode:
                 self.tw.canvas.draw_text(text, int(x), int(y),
                                          self.body_height, int(w))
 
+    def read_pixel(self):
+        """ Read r, g, b, a from the canvas and push b, g, r to the stack """
+        r, g, b, a = self.tw.canvas.get_pixel()
+        self.heap.append(b)
+        self.heap.append(g)
+        self.heap.append(r)
+
     # Depreciated block methods
 
     def draw_title(self, title, x, y):
--
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