Particle rotation when isBillboard false

repro: https://playground.babylonjs.com/#EV0SEQ#37

Keep clicking on the sphere, it should always generate particles flat to the ground. But it does not, occasionally, one or more particles would rotate. This doesn’t happen consistently, I’m unsure if I missed a setting. I have tried vfx.minInitialRotation = 0; vfx.maxInitialRotation = 0;, adjusting direction2 of the point emitter among others. But it persists.

Is this wai? What should I do to ensure no rotation on all particles when its triggered?

particle_billboard

nvm, I figured it out. Apparently, direction1/2 of the point emitter mean totally different stuff from the doc. My bad, marking as solved. Mods, feel free to delete, thanks!

2 Likes