Fix T100883: crash with particle instancing and clumping

Properly initialize clump curve mapping tables for duplis and other cases
where this was missed by making a generic init/free function instead of
duplicating the same logic in multiple places. Also fold lattice deform
init into this.

1 files changed, 2 insertions, 5 deletions

diff --git a/source/blender/io/alembic/exporter/abc_writer_points.cc b/source/blender/io/alembic/exporter/abc_writer_points.cc
index 6ec6f736818..9372bffc3ca 100644
--- a/source/blender/io/alembic/exporter/abc_writer_points.cc
+++ b/source/blender/io/alembic/exporter/abc_writer_points.cc
@@ -85,7 +85,7 @@ void ABCPointsWriter::do_write(HierarchyContext &context)
   sim.ob = context.object;
   sim.psys = psys;
 
-  psys->lattice_deform_data = psys_create_lattice_deform_data(&sim);
+  psys_sim_data_init(&sim);
 
   uint64_t index = 0;
   for (int p = 0; p < psys->totpart; p++) {
@@ -113,10 +113,7 @@ void ABCPointsWriter::do_write(HierarchyContext &context)
     ids.push_back(index++);
   }
 
-  if (psys->lattice_deform_data) {
-    BKE_lattice_deform_data_destroy(psys->lattice_deform_data);
-    psys->lattice_deform_data = nullptr;
-  }
+  psys_sim_data_free(&sim);
 
   Alembic::Abc::P3fArraySample psample(points);
   Alembic::Abc::UInt64ArraySample idsample(ids);