function to stretch a polygon region

leStretchFig or leStretchShape can be used for this.

Andrew

Thank  you Andrew

I used leStretchFig to stretch a “U shaped” Layer. The below commands worked fine to stretch left and right edges correctly.

leStretchFig(car(geGetSelSet()) list(-.01 0) list( nil t  nil nil nil t nil nil ) t)   ; worked for left stretch of u shape

leStretchFig(car(geGetSelSet()) list(.01 0) list( t nil  nil nil t nil nil nil ) t)   ; worked for right stretch of u shape

I copied the same layer and pasted by flipping sidewise and up & down.

For above commands the results were same.

But when it comes to an “L shaped” layer the flipped up and down layer gives different scaling.

The command used is given below.

leStretchFig(car(geGetSelSet()) list(.01 0) list( t   nil  nil   nil t nil ) t)

In a polygon there will be many co-ordinates(l_freePoints as mentioned in SKILL API)

How to control the l_freePoints correctly to obtain the correct result to stretch in x directions only ?

Thanks

Nisanth SS

Nisanth,

The problem is that the list of t's and nil's is dependent upon where the list of points starts. So your example for a U shape only works because of where the first point happens to be in your example. In other cases it probably wouldn't work. The same is true for your L shape - it's probably not working because of where the first point happens to be.

It would be relatively easy to loop through the ~>points attribute for a polygon and identify which are vertical edges and hence identify which vertices are part of an X edge. You'd also want to figure out which are on a specific side - that also is just a matter of coding whatever requirements you have (you'll need to think about this, because this is rather dependent on what you are trying to achieve, and I can't really do your work for you) - but it shouldn't be difficult.

Regards,

Andrew.