Hi,
I am building app which uses the most of graphic drawing/editing/updating capability in ArcGis I have feature where I can join(Include/exclude) graphics from different objects like in link below which is already available in ArcGis Desktop version.
Also look at HTML5 canvas globalCompositeOperation HTML canvas globalCompositeOperation Property
Can we achieve this using ArcGis JavaScript API.
- Ashish
Take a look at the geometryEngine, which has many methods (join, clip, intersect, etc) you can perform on the geometries.