morphFromZero property

Whether the open/close morph blooms from a zero-size point at the trigger center instead of from a glass blob the size of the trigger. Defaults to false (the menu spawns as a small rounded "metaball" matching the trigger and morphs outward — the standard iOS-26 liquid-glass behavior).

Set to true when the trigger is invisible or zero-sized (e.g. an imperatively-driven menu positioned by an external gesture owner via controller), so there is no button for the spawn blob to grow from. In that case the trigger ghost (Blob A) is suppressed entirely and the menu body lerps its size from 0 → full while keeping the identical teardrop shape morph (radius circle→rounded-rect, J-curve travel, and spring). The shape still spawns at — and collapses back to — the trigger center, so a zero-sized trigger reads as a point bloom rather than an 8px glass dot.