GRIDPOCK.DOC

C-Hook Name: gridpock.dll/.txt/.scr

Date: November 14, 1997

Programmer: CNC Software, Inc.

Description:

Creates points on pocket boundaries, a grid of points inside the pocket
and tangent circles.  User is selected for boundaries, as in pocketing.  
Parameters are:

     x Create points on boundaries
       Maximum stepover   ______

     x Create point grid inside pocket
       X stepover    ______
       Y stepover    ______

     x Create tangent circles / center points
       o even spacing    o center points
       o auto fill       o circles
                         o both

     Circle diameter ______

     X origin        ______
     Y origin        ______
     Stock to leave  ______

Boundary points:

The number of boundary points is computed from the boundary perimeter and
the maximum stepover.  The actual stepover is adjusted (to a slightly smaller
number) so all points are evenly spaced.

Grid points:

A grid of points that lie inside the outer boundary and outside the islands
is created.  A point will be not be created if its distance from any boundary 
is less than "Clearance".  X origin and Y origin can be used to obtain a 
slightly different set of circles (still conforming to the clearance 
requirement).  All points lie at multiples of X stepover and Y stepover 
relative to X origin / Y origin.

All points are created using the main color, main level, current construction
plane and depth.

Create tangent circles / center points:

A grid of tangent circles / center points that lie inside the outer boundary 
and outside the islands is created.  A circle will not be created if its 
distance from any boundary is less than "Clearance".  If "even spacing" is 
selected, X origin and Y origin can be used to obtain a slightly different 
set of circles (still conforming to the clearance requirement).  The first 
row of circles will start at minimum y value of the offset contour (not at 
a grid multiple).

The "auto fill" choice usually does a better job of filling boundaries, but
does not pack the circles together as closely.  The end result may be more
or fewer circles than "even spacing".

All circles are created using the main color, main level, current construction
plane and depth.  If "center points" is selected, circles will be drawn in
dark gray but will not be saved in the database.

Modifications:
$lgb$
1.0 jds 10/22/97 checked into version 7
1.1 jds 10/22/97 changed "clearance" to "stock to leave"
1.2 jds 10/23/97 changed "Hole diameter" to "Circle diameter"
1.3 jds 11/14/97 added option to create center points / circles / both
1.4 jds 11/14/97 updated parameter screen layout
$lge$