Grouping

Draw functions that allow collecting other draw functions together.

• hide Hides an element.
• intersections Calculates the intersections between multiple elements.
• group Groups one or more elements together.
• anchor Creates a new anchor for the current group.
• copy-anchors Copies multiple anchors from one element into the current group.
• set-ctx Allows modifying the current canvas context.
• get-ctx Allows the reading of the current canvas context.
• for-each-anchor Iterates throguh all named anchors of an element with a callback.
• on-layer Places elements on a specific layer.
• floating Places an element without affecting bounding boxes.