diff options
author | Hans Goudey <h.goudey@me.com> | 2022-08-17 17:20:25 +0300 |
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committer | Hans Goudey <h.goudey@me.com> | 2022-08-17 17:20:25 +0300 |
commit | eaa87101cd5a20e577748bfff95b7cb06b04dd4b (patch) | |
tree | 8243ee6bd1479299f23819ef2765720fc9a18889 /source/blender/editors/object/object_add.cc | |
parent | 71f091a631c2deae08ff289184f928538b527cb3 (diff) |
Metaball: Evaluate metaball objects as mesh components
With the ultimate goal of simplifying drawing and evaluation,
this patch makes the following changes and removes code:
- Use `Mesh` instead of `DispList` for evaluated basis metaballs.
- Remove all `DispList` drawing code, which is now unused.
- Simplify code that converts evaluated metaballs to meshes.
- Store the evaluated mesh in the evaluated geometry set.
This has the following indirect benefits:
- Evaluated meshes from metaball objects can be used in geometry nodes.
- Renderers can ignore evaluated metaball objects completely
- Cycles rendering no longer has to convert to mesh from `DispList`.
- We get closer to removing `DispList` completely.
- Optimizations to mesh rendering will also apply to metaball objects.
The vertex normals on the evaluated mesh are technically invalid;
the regular calculation wouldn't reproduce them. Metaball objects
don't support modifiers though, so it shouldn't be a problem.
Eventually we can support per-vertex custom normals (T93551).
Differential Revision: https://developer.blender.org/D14593
Diffstat (limited to 'source/blender/editors/object/object_add.cc')
-rw-r--r-- | source/blender/editors/object/object_add.cc | 41 |
1 files changed, 7 insertions, 34 deletions
diff --git a/source/blender/editors/object/object_add.cc b/source/blender/editors/object/object_add.cc index acd7a8e3c13..058c9740a96 100644 --- a/source/blender/editors/object/object_add.cc +++ b/source/blender/editors/object/object_add.cc @@ -2771,25 +2771,6 @@ static const EnumPropertyItem convert_target_items[] = { {0, nullptr, 0, nullptr, nullptr}, }; -static void object_data_convert_ensure_curve_cache(Depsgraph *depsgraph, Scene *scene, Object *ob) -{ - if (ob->runtime.curve_cache == nullptr) { - /* Force creation. This is normally not needed but on operator - * redo we might end up with an object which isn't evaluated yet. - * Also happens in case we are working on a copy of the object - * (all its caches have been nuked then). - */ - if (ELEM(ob->type, OB_SURF, OB_CURVES_LEGACY, OB_FONT)) { - /* We need 'for render' ON here, to enable computing bevel #DispList if needed. - * Also makes sense anyway, we would not want e.g. to lose hidden parts etc. */ - BKE_displist_make_curveTypes(depsgraph, scene, ob, true); - } - else if (ob->type == OB_MBALL) { - BKE_displist_make_mball(depsgraph, scene, ob); - } - } -} - static void object_data_convert_curve_to_mesh(Main *bmain, Depsgraph *depsgraph, Object *ob) { Object *object_eval = DEG_get_evaluated_object(depsgraph, ob); @@ -2908,7 +2889,7 @@ static int object_convert_exec(bContext *C, wmOperator *op) const bool use_faces = RNA_boolean_get(op->ptr, "faces"); const float offset = RNA_float_get(op->ptr, "offset"); - int a, mballConverted = 0; + int mballConverted = 0; bool gpencilConverted = false; bool gpencilCurveConverted = false; @@ -3332,21 +3313,13 @@ static int object_convert_exec(bContext *C, wmOperator *op) MetaBall *mb = static_cast<MetaBall *>(newob->data); id_us_min(&mb->id); - newob->data = BKE_mesh_add(bmain, "Mesh"); - newob->type = OB_MESH; - - Mesh *me = static_cast<Mesh *>(newob->data); - me->totcol = mb->totcol; - if (newob->totcol) { - me->mat = static_cast<Material **>(MEM_dupallocN(mb->mat)); - for (a = 0; a < newob->totcol; a++) { - id_us_plus((ID *)me->mat[a]); - } - } + /* Find the evaluated mesh of the basis metaball object. */ + Object *object_eval = DEG_get_evaluated_object(depsgraph, baseob); + Mesh *mesh = BKE_mesh_new_from_object_to_bmain(bmain, depsgraph, object_eval, true); - object_data_convert_ensure_curve_cache(depsgraph, scene, baseob); - BKE_mesh_from_metaball(&baseob->runtime.curve_cache->disp, - static_cast<Mesh *>(newob->data)); + id_us_plus(&mesh->id); + newob->data = mesh; + newob->type = OB_MESH; if (obact->type == OB_MBALL) { basact = basen; |