--- a/ImageRdr.st	Tue Apr 22 19:36:11 1997 +0200
+++ b/ImageRdr.st	Tue Apr 22 19:37:58 1997 +0200
@@ -1635,11 +1635,16 @@
 !ImageReader methodsFor:'image reading'!
 
 buildMaskFromColor:maskPixelValue
+    "helper for image formats, where an individual pixel value
+     has been defined as a mask-pixel (i.e. GIF).
+     Creates a maskImage, with zeros at positions where the image
+     has the given pixelValue; all other mask pixels are set to 1."
+
     |maskArray bytesPerMaskRow|
 
     bytesPerMaskRow := (width+7) // 8.
 
-    maskArray := ByteArray new:bytesPerMaskRow * height.
+    maskArray := ByteArray uninitializedNew:bytesPerMaskRow * height.
 
 %{
     int __w = __intVal(__INST(width));
@@ -1712,7 +1717,7 @@
     }
 fail: ;
 %}.
-    mask := Depth1Image width:width height:height fromArray:maskArray.
+    mask := ImageMask width:width height:height fromArray:maskArray.
 
     "Created: 21.6.1996 / 11:43:47 / cg"
 
@@ -1750,5 +1755,5 @@
 !ImageReader class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libview/Attic/ImageRdr.st,v 1.43 1997-04-10 15:46:29 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libview/Attic/ImageRdr.st,v 1.44 1997-04-22 17:37:58 cg Exp $'
 ! !

--- a/ImageReader.st	Tue Apr 22 19:36:11 1997 +0200
+++ b/ImageReader.st	Tue Apr 22 19:37:58 1997 +0200
@@ -1635,11 +1635,16 @@
 !ImageReader methodsFor:'image reading'!
 
 buildMaskFromColor:maskPixelValue
+    "helper for image formats, where an individual pixel value
+     has been defined as a mask-pixel (i.e. GIF).
+     Creates a maskImage, with zeros at positions where the image
+     has the given pixelValue; all other mask pixels are set to 1."
+
     |maskArray bytesPerMaskRow|
 
     bytesPerMaskRow := (width+7) // 8.
 
-    maskArray := ByteArray new:bytesPerMaskRow * height.
+    maskArray := ByteArray uninitializedNew:bytesPerMaskRow * height.
 
 %{
     int __w = __intVal(__INST(width));
@@ -1712,7 +1717,7 @@
     }
 fail: ;
 %}.
-    mask := Depth1Image width:width height:height fromArray:maskArray.
+    mask := ImageMask width:width height:height fromArray:maskArray.
 
     "Created: 21.6.1996 / 11:43:47 / cg"
 
@@ -1750,5 +1755,5 @@
 !ImageReader class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libview/ImageReader.st,v 1.43 1997-04-10 15:46:29 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libview/ImageReader.st,v 1.44 1997-04-22 17:37:58 cg Exp $'
 ! !