Only module for polygon boolean functions.

[gagan-bansal]

Only module for polygon boolean functions.

[memononen]

The both algorithms are pretty much tied together, bulk of the code is used for both. If you need only poly booleans, you can take a look at Clipper: http://www.angusj.com/delphi/clipper.php

IIRC it is bigger library, though.

[gagan-bansal]

Thanks for quick reply.I am only looking for javascript module and jsclipper is also a big library. One more thing I could not get documentation for polygon boolean functions, the document (http://www.glprogramming.com/red/chapter11.html) you mentioned tells more about tesselation.

[memononen]

If you set element type to Tess2.BOUNDARY_CONTOURS you will get polygons back. They're called contours since the code can also tesselate the input polygons (contours) into convex polygons.

[memononen]

The Red Book chapter will tell you how to implement common boolean operations (union, sub, intersect) based on the windings used by the library.

[gagan-bansal]

I am familiar with boolean operation in concept. But I was looking which function should I use to get the output. Like
var intersection = tess2.intersection(poly1, poly2)

[memononen]

Search for "CSG Uses for Winding Rules" in the red book linked above.

The library was originally written to tesselate polygons, but it can do boolean ops too, but the API is not the cleanest for that purpose.

[gagan-bansal]

Thanks, I'll go through it.

[gagan-bansal]

Satisfy my requirement https://github.com/w8r/GreinerHormann