[Bf-committers] [Bf-blender-cvs] [c24a23f] master: Fix for particle emission bug, reported on IRC by Thomas Beck (@plasmasolutions): When the particle emitter is parented to a fast moving object, the emission locations will not be interpolated over subframes. This works if the particle emitter is animated itself. Particle system evaluates the emitter location for each subframe, but has to do this for the parent objects as well to get reliable results.

[Dalai Felinto]

Hey Lukas, (and others) you may want to skip a line next time between
the git log "subject" and the rest of the message. Otherwise git
considers it all part of the 'headline'.

cheers,
Dalai
--
blendernetwork.org/dalai-felinto
www.dalaifelinto.com


2014/1/22 Lukas Tönne <noreply at git.blender.org>:
> Commit: c24a23f264d2c7001c61ca6e11c66b8c372e1d2a
> Author: Lukas Tönne
> Date:   Wed Jan 22 16:26:09 2014 +0100
> https://developer.blender.org/rBc24a23f264d2c7001c61ca6e11c66b8c372e1d2a
>
> Fix for particle emission bug, reported on IRC by Thomas Beck
> (@plasmasolutions): When the particle emitter is parented to a fast
> moving object, the emission locations will not be interpolated over
> subframes. This works if the particle emitter is animated itself.
> Particle system evaluates the emitter location for each subframe, but
> has to do this for the parent objects as well to get reliable results.
>
> ===================================================================
>
> M       source/blender/blenkernel/intern/particle_system.c
>
> ===================================================================
>
> diff --git a/source/blender/blenkernel/intern/particle_system.c b/source/blender/blenkernel/intern/particle_system.c
> index 37ca502..6c2a42d 100644
> --- a/source/blender/blenkernel/intern/particle_system.c
> +++ b/source/blender/blenkernel/intern/particle_system.c
> @@ -1974,10 +1974,10 @@ void reset_particle(ParticleSimulationData *sim, ParticleData *pa, float dtime,
>                 /* we have to force RECALC_ANIM here since where_is_objec_time only does drivers */
>                 while (ob) {
>                         BKE_animsys_evaluate_animdata(sim->scene, &ob->id, ob->adt, pa->time, ADT_RECALC_ANIM);
> +                       BKE_object_where_is_calc_time(sim->scene, ob, pa->time);
>                         ob = ob->parent;
>                 }
>                 ob = sim->ob;
> -               BKE_object_where_is_calc_time(sim->scene, ob, pa->time);
>
>                 psys->flag |= PSYS_OB_ANIM_RESTORE;
>         }
> @@ -5076,10 +5076,10 @@ void particle_system_update(Scene *scene, Object *ob, ParticleSystem *psys)
>         if (psys->flag & PSYS_OB_ANIM_RESTORE) {
>                 while (ob) {
>                         BKE_animsys_evaluate_animdata(scene, &ob->id, ob->adt, cfra, ADT_RECALC_ANIM);
> +                       BKE_object_where_is_calc_time(scene, ob, cfra);
>                         ob = ob->parent;
>                 }
>                 ob = sim.ob;
> -               BKE_object_where_is_calc_time(scene, ob, cfra);
>
>                 psys->flag &= ~PSYS_OB_ANIM_RESTORE;
>         }
>
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