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Fix cloth sim artifacts on planes

This commit is contained in:
Pablo Dobarro 2020-12-15 22:13:11 +01:00
parent e582a4dc77
commit 7bc1657d05
1 changed files with 17 additions and 0 deletions
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17
source/blender/editors/sculpt_paint/sculpt_cloth.c
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@ -756,6 +756,17 @@ static void cloth_brush_solve_collision(Object *object,
}
}
}
static void cloth_simulation_noise_get(float *r_noise,
SculptSession *ss,
const int index,
const float strength)
{
const uint *hash_co = (const uint *)SCULPT_vertex_co_get(ss, index);
for (int i = 0; i < 3; i++) {
const uint hash = BLI_hash_int_2d(hash_co[0], hash_co[1]) ^ BLI_hash_int_2d(hash_co[2], i);
r_noise[i] = (hash * (1.0f / 0xFFFFFFFF) - 0.5f) * strength;
}
}
static void do_cloth_brush_solve_simulation_task_cb_ex(
void *__restrict userdata, const int n, const TaskParallelTLS *__restrict UNUSED(tls))
@ -801,6 +812,12 @@ static void do_cloth_brush_solve_simulation_task_cb_ex(
madd_v3_v3fl(cloth_sim->pos[i], pos_diff, mask_v);
madd_v3_v3fl(cloth_sim->pos[i], cloth_sim->acceleration[i], mask_v);
/* Prevents the vertices from sliding without creating folds when all vertices and forces are
* in the same plane. */
float noise[3];
cloth_simulation_noise_get(noise, ss, vd.index, 0.000001f);
add_v3_v3(cloth_sim->pos[i], noise);
if (cloth_sim->collider_list != NULL) {
cloth_brush_solve_collision(data->ob, cloth_sim, i);
}