Fix for [#24430] Hair Dynamics Problem

* Hair added in particle mode didn't have any weights assigned.

diff --git a/source/blender/editors/physics/particle_edit.c b/source/blender/editors/physics/particle_edit.c
index 57867fdc4410bcbf733e84bb77130a5deb0b1ce0..10313868500057d654dca80b46fbec852cc0cc61 100644 (file)
--- a/source/blender/editors/physics/particle_edit.c
+++ b/source/blender/editors/physics/particle_edit.c
@@ -3200,6 +3200,7 @@ static int brush_add(PEData *data, short number)
                        framestep= pa->lifetime/(float)(pset->totaddkey-1);
 
                        if(tree) {
+                               ParticleData *ppa;
                                HairKey *hkey;
                                ParticleKey key[3];
                                KDTreeNearest ptn[3];
@@ -3224,6 +3225,8 @@ static int brush_add(PEData *data, short number)
                                for(w=0; w<maxw; w++)
                                        weight[w] /= totw;
 
+                               ppa= psys->particles+ptn[0].index;
+
                                for(k=0; k<pset->totaddkey; k++) {
                                        hkey= (HairKey*)pa->hair + k;
                                        hkey->time= pa->time + k * framestep;
@@ -3232,6 +3235,9 @@ static int brush_add(PEData *data, short number)
                                        psys_get_particle_on_path(&sim, ptn[0].index, key, 0);
                                        mul_v3_fl(key[0].co, weight[0]);
                                        
+                                       /* TODO: interpolatint the weight would be nicer */
+                                       hkey->weight= (ppa->hair+MIN2(k, ppa->totkey-1))->weight;
+                                       
                                        if(maxw>1) {
                                                key[1].time= key[0].time;
                                                psys_get_particle_on_path(&sim, ptn[1].index, key + 1, 0);
@@ -3258,6 +3264,7 @@ static int brush_add(PEData *data, short number)
                                for(k=0, hkey=pa->hair; k<pset->totaddkey; k++, hkey++) {
                                        VECADDFAC(hkey->co, pa->state.co, pa->state.vel, k * framestep * timestep);
                                        hkey->time += k * framestep;
+                                       hkey->weight = 1.f - (float)k/(float)(pset->totaddkey-1);
                                }
                        }
                        for(k=0, hkey=pa->hair; k<pset->totaddkey; k++, hkey++) {