Particle edit: Simplify code by benefiting from single edit context

Makes ADD brush to work.

At some point children particles draw got broken, children are not
visible for until first stroke is done. Still looking into it.

1 files changed, 9 insertions, 35 deletions

diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c
index 2cd3ff1ccf3..8c322f0c853 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -298,24 +298,6 @@ ParticleSystem *psys_orig_get(ParticleSystem *psys)
 	return psys->orig_psys;
 }
 
-struct ParticleSystem *psys_eval_get(Depsgraph *depsgraph,
-                                     Object *object,
-                                     ParticleSystem *psys)
-{
-	Object *object_eval = DEG_get_evaluated_object(depsgraph, object);
-	if (object_eval == object) {
-		return psys;
-	}
-	ParticleSystem *psys_eval = object_eval->particlesystem.first;
-	while (psys_eval != NULL) {
-		if (psys_eval->orig_psys == psys) {
-			return psys_eval;
-		}
-		psys_eval = psys_eval->next;
-	}
-	return psys_eval;
-}
-
 static PTCacheEdit *psys_orig_edit_get(ParticleSystem *psys)
 {
 	if (psys->orig_psys == NULL) {
@@ -2618,7 +2600,6 @@ void psys_cache_paths(ParticleSimulationData *sim, float cfra, const bool use_re
 }
 void psys_cache_edit_paths(Depsgraph *depsgraph, Scene *scene, Object *ob, PTCacheEdit *edit, float cfra, const bool use_render_params)
 {
-	Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
 	ParticleCacheKey *ca, **cache = edit->pathcache;
 	ParticleEditSettings *pset = &scene->toolsettings->particle;
 	
@@ -2626,16 +2607,9 @@ void psys_cache_edit_paths(Depsgraph *depsgraph, Scene *scene, Object *ob, PTCac
 	PTCacheEditKey *ekey = NULL;
 
 	ParticleSystem *psys = edit->psys;
-	ParticleSystem *psys_eval = NULL;
 	ParticleSystemModifierData *psmd = psys_get_modifier(ob, psys);
-	ParticleSystemModifierData *psmd_eval = NULL;
-
-	if (psmd != NULL) {
-		psmd_eval = (ParticleSystemModifierData *)modifiers_findByName(ob_eval, psmd->modifier.name);
-		psys_eval = psmd_eval->psys;
-	}
 
-	ParticleData *pa = psys_eval ? psys_eval->particles : NULL;
+	ParticleData *pa = psys ? psys->particles : NULL;
 
 	ParticleInterpolationData pind;
 	ParticleKey result;
@@ -2664,7 +2638,7 @@ void psys_cache_edit_paths(Depsgraph *depsgraph, Scene *scene, Object *ob, PTCac
 
 	/* frs_sec = (psys || edit->pid.flag & PTCACHE_VEL_PER_SEC) ? 25.0f : 1.0f; */ /* UNUSED */
 
-	const bool use_weight = (pset->brushtype == PE_BRUSH_WEIGHT) && (psys_eval != NULL) && (psys_eval->particles != NULL);
+	const bool use_weight = (pset->brushtype == PE_BRUSH_WEIGHT) && (psys != NULL) && (psys->particles != NULL);
 
 	if (use_weight) {
 		; /* use weight painting colors now... */
@@ -2709,10 +2683,10 @@ void psys_cache_edit_paths(Depsgraph *depsgraph, Scene *scene, Object *ob, PTCac
 		cache[i]->segments = segments;
 
 		/*--get the first data points--*/
-		init_particle_interpolation(ob_eval, psys_eval, pa, &pind);
+		init_particle_interpolation(ob, psys, pa, &pind);
 
-		if (psys_eval) {
-			psys_mat_hair_to_global(ob_eval, psmd_eval->mesh_final, psys->part->from, pa, hairmat);
+		if (psys) {
+			psys_mat_hair_to_global(ob, psmd->mesh_final, psys->part->from, pa, hairmat);
 			copy_v3_v3(rotmat[0], hairmat[2]);
 			copy_v3_v3(rotmat[1], hairmat[1]);
 			copy_v3_v3(rotmat[2], hairmat[0]);
@@ -2731,7 +2705,7 @@ void psys_cache_edit_paths(Depsgraph *depsgraph, Scene *scene, Object *ob, PTCac
 			time = (float)k / (float)segments;
 			t = birthtime + time * (dietime - birthtime);
 			result.time = -t;
-			do_particle_interpolation(psys_eval, i, pa, t, &pind, &result);
+			do_particle_interpolation(psys, i, pa, t, &pind, &result);
 			copy_v3_v3(ca->co, result.co);
 
 			/* non-hair points are already in global space */
@@ -2828,9 +2802,9 @@ void psys_cache_edit_paths(Depsgraph *depsgraph, Scene *scene, Object *ob, PTCac
 		ParticleSimulationData sim = {0};
 		sim.depsgraph = depsgraph;
 		sim.scene = scene;
-		sim.ob = ob_eval;
-		sim.psys = psys_eval;
-		sim.psmd = psys_get_modifier(ob_eval, psys_eval);
+		sim.ob = ob;
+		sim.psys = psys;
+		sim.psmd = psys_get_modifier(ob, psys);
 
 		psys_cache_child_paths(&sim, cfra, true, use_render_params);
 	}