Position Emitter entity: start; pivot; mimic; path; mouse; drag-and-drop
The Emitter is draggable
Artefact
Position lock
Test purpose
Create a range of entitys to act as a pivot, a mimic, and a path
Create a particle world object, a range of visual entitys (Star, Wheel, Block, Picture) alongside a fill gradient, and a particle Emitter entity using them
Check that the Emitter entity can lock to the pivot, mimic and path entitys
Check that the emitter can use pivot, mimic and path roll values
Check that the Emitter entity can be dragged and dropped
Make sure the gradient works as expected - applied at Cell level for the Wheel entity; applied at entity level for the Block entity
