Reactive Vec tracking the page pointer in shape's SVG-root frame, via the shared window listener (N callers, one listener). init is returned before the first pointermove to avoid a first-frame jolt to (0, 0).
Vec
shape
init
pointermove
Optional
Reactive
Vectracking the page pointer inshape's SVG-root frame, via the shared window listener (N callers, one listener).initis returned before the firstpointermoveto avoid a first-frame jolt to (0, 0).