[FIX] Update particle emitter code to latest Math API.
[FIX] Update particle emitter code to latest Math API.

H1Gdev/engine,shinate/engine,sanyaade-teachings/engine,SuperStarPL/engine,horryq/engine-1,playcanvas/engine,MicroWorldwide/PlayCanvas,MicroWorldwide/PlayCanvas,RainsSoft/engine,shinate/engine,shinate/engine,3DGEOM/engine,SuperStarPL/engine,guycalledfrank/engine,horryq/engine-1,nizihabi/engine,RainsSoft/engine,nizihabi/engine,3DGEOM/engine,sereepap2029/playcanvas,maxwellalive/engine,sereepap2029/playcanvas,guycalledfrank/engine,sanyaade-teachings/engine,horryq/engine-1,H1Gdev/engine,playcanvas/engine,sereepap2029/playcanvas,RainsSoft/engine,3DGEOM/engine,aidinabedi/playcanvas-engine,SuperStarPL/engine,nizihabi/engine,maxwellalive/engine,maxwellalive/engine,sanyaade-teachings/engine,aidinabedi/playcanvas-engine