diff options
-rw-r--r-- | source/blender/io/alembic/intern/abc_reader_mesh.cc | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/source/blender/io/alembic/intern/abc_reader_mesh.cc b/source/blender/io/alembic/intern/abc_reader_mesh.cc index adf1a3e241c..83ca3399db5 100644 --- a/source/blender/io/alembic/intern/abc_reader_mesh.cc +++ b/source/blender/io/alembic/intern/abc_reader_mesh.cc @@ -463,13 +463,17 @@ static void read_velocity(const V3fArraySamplePtr &velocities, const CDStreamConfig &config, const float velocity_scale) { + const int num_velocity_vectors = static_cast<int>(velocities->size()); + if (num_velocity_vectors != config.mesh->totvert) { + /* Files containing videogrammetry data may be malformed and export velocity data on missing + * frames (most likely by copying the last valid data). */ + return; + } + CustomDataLayer *velocity_layer = BKE_id_attribute_new( &config.mesh->id, "velocity", CD_PROP_FLOAT3, ATTR_DOMAIN_POINT, nullptr); float(*velocity)[3] = (float(*)[3])velocity_layer->data; - const int num_velocity_vectors = static_cast<int>(velocities->size()); - BLI_assert(num_velocity_vectors == config.mesh->totvert); - for (int i = 0; i < num_velocity_vectors; i++) { const Imath::V3f &vel_in = (*velocities)[i]; copy_zup_from_yup(velocity[i], vel_in.getValue()); |