Application:	CalcCMask & CalcMask

	Description:	This snippet shows how to use both CalcCMask or
					CalcMask to create a mask given a source bitmap
					image.  As decribed on pages IV-24 and V-72 of
					Inside Mac, the two routines compute a destination
					bitmap image with 1's only in the pixels where
					paint can not leak from any of the outer edges,
					This is similar to the lasso tool found in many
					drawing apps.

	File:			CalcCMask & CalcMask.¹
					CalcCMask & CalcMask.c
					CalcCMask & CalcMask.¹.rsrc

	Programmer:		Edgar Lee
	Organization:	Apple Computer, Inc.
	Department:		Developer Technical Support, DTS
	Language:		C (Think C version 5.0.1)
	Date Created:	2-26-92