[Image-SIG] Patch to add .w and .h to Image objects.

[C. Barnes]

It's inconvenient to write im.size[0] and im.size[1]
everywhere.  This is a patch to add .w and .h to the
Image class.

--- Image.bak   Wed Jun 23 14:55:37 2004
+++ Image.py    Wed Jun 23 14:55:39 2004
@@ -398,6 +398,13 @@

     _makeself = _new # compatibility

+    w = property(__getw)
+    h = property(__geth)
+
+    def __getw(self): return self.size[0]
+    def __geth(self): return self.size[1]
+
+
     def _copy(self):
         self.load()
         self.im = self.im.copy()

Pros:

1. im.w and im.h are more semantically descriptive.
2. im.w and im.h are simpler.

Cons:
1. More than one way to determine an image's 
   width/height.

However, I think the pros outweigh the cons.

By analogy, consider a vector in R^3.
It is convenient to be able to write either vec.x or
vec[0].  One is semantically superior, one is more
useful for loops.  Thus I think that Images should
have both .size and .w/.h.

 - Connelly


		
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