USD import flags.

Added Is Sequence and Transform Cache Constraint
import options.

4 files changed, 44 insertions, 18 deletions

diff --git a/source/blender/editors/io/io_usd.c b/source/blender/editors/io/io_usd.c
index 09452d46ced..3655abea00b 100644
--- a/source/blender/editors/io/io_usd.c
+++ b/source/blender/editors/io/io_usd.c
@@ -283,6 +283,9 @@ static int wm_usd_import_exec(bContext *C, wmOperator *op)
 
   const bool import_usdpreview = RNA_boolean_get(op->ptr, "import_usdpreview");
 
+  const bool is_sequence = RNA_boolean_get(op->ptr, "is_sequence");
+  const bool transform_constraint = RNA_boolean_get(op->ptr, "transform_constraint");
+
   /* Switch out of edit mode to avoid being stuck in it (T54326). */
   Object *obedit = CTX_data_edit_object(C);
   if (obedit) {
@@ -296,7 +299,9 @@ static int wm_usd_import_exec(bContext *C, wmOperator *op)
                                    debug,
                                    use_instancing,
                                    light_intensity_scale,
-                                   import_usdpreview};
+                                   import_usdpreview,
+                                   is_sequence,
+                                   transform_constraint};
 
   bool ok = USD_import(C, filename, &params, as_background_job);
 
@@ -323,6 +328,11 @@ static void wm_usd_import_draw(bContext *UNUSED(C), wmOperator *op)
   uiItemR(col, ptr, "debug", 0, NULL, ICON_NONE);
 
   box = uiLayoutBox(layout);
+  uiItemL(box, IFACE_("Animation Cache"), ICON_NONE);
+  uiItemR(box, ptr, "is_sequence", 0, NULL, ICON_NONE);
+  uiItemR(box, ptr, "transform_constraint", 0, NULL, ICON_NONE);
+
+  box = uiLayoutBox(layout);
   uiItemL(box, IFACE_("Experimental"), ICON_NONE);
   uiItemR(box, ptr, "use_instancing", 0, NULL, ICON_NONE);
   uiItemR(box, ptr, "import_usdpreview", 0, NULL, ICON_NONE);
@@ -394,6 +404,19 @@ void WM_OT_usd_import(wmOperatorType *ot)
       false,
       "Import UsdPreviewSurface",
       "When checked, convert UsdPreviewSurface shaders to Principled BSD shader networks.");
+
+  RNA_def_boolean(ot->srna,
+                  "is_sequence",
+                  false,
+                  "Is Sequence",
+                  "Set to true if the cache is split into separate files");
+
+  RNA_def_boolean(ot->srna,
+                  "transform_constraint",
+                  true,
+                  "Transform Cache Constraint",
+                  "When checked, create transform cache constraints for objects that have "
+                  "time-varying transforms.");
 }
 
 #endif /* WITH_USD */
diff --git a/source/blender/io/usd/import/usd_reader_xformable.cc b/source/blender/io/usd/import/usd_reader_xformable.cc
index 539b388438a..fdca56cf7ed 100644
--- a/source/blender/io/usd/import/usd_reader_xformable.cc
+++ b/source/blender/io/usd/import/usd_reader_xformable.cc
@@ -97,7 +97,7 @@ void USDXformableReader::set_object_transform(const double time, CacheFile *cach
   BKE_object_apply_mat4(object_, transform_from_usd, true, false);
   BKE_object_to_mat4(object_, object_->obmat);
 
-  if (cache_file && !is_constant) {
+  if (cache_file && (!is_constant || this->context_.import_params.is_sequence)) {
     bConstraint *con = BKE_constraint_add_for_object(
         object_, NULL, CONSTRAINT_TYPE_TRANSFORM_CACHE);
     bTransformCacheConstraint *data = static_cast<bTransformCacheConstraint *>(con->data);
diff --git a/source/blender/io/usd/intern/usd_capi.cc b/source/blender/io/usd/intern/usd_capi.cc
index 931b08433ef..73a1a5ede14 100644
--- a/source/blender/io/usd/intern/usd_capi.cc
+++ b/source/blender/io/usd/intern/usd_capi.cc
@@ -298,22 +298,23 @@ static void import_startjob(void *user_data, short *stop, short *do_update, floa
 
   USDPrimIterator usd_prim_iter(data->stage, import_ctx, data->bmain);
 
-  CacheFile *cache_file = static_cast<CacheFile *>(
-      BKE_cachefile_add(data->bmain, BLI_path_basename(data->filename)));
-
-  /* Decrement the ID ref-count because it is going to be incremented for each
-   * modifier and constraint that it will be attached to, so since currently
-   * it is not used by anyone, its use count will off by one. */
-  /* TODO(makowalski): rather than decrementing the use count, should
-   * we just call BKE_id_free_us() on the cache_file id when cleaning up? */
-  id_us_min(&cache_file->id);
-
-  // cache_file->is_sequence = data->params.is_sequence;
-  cache_file->scale = data->params.scale;
-  STRNCPY(cache_file->filepath, data->filename);
-
-  // data->archive = archive;
-  // data->settings.cache_file = cache_file;
+  CacheFile *cache_file = nullptr;
+
+  if (data->params.transform_constraint) {
+    cache_file = static_cast<CacheFile *>(
+        BKE_cachefile_add(data->bmain, BLI_path_basename(data->filename)));
+
+    /* Decrement the ID ref-count because it is going to be incremented for each
+     * modifier and constraint that it will be attached to, so since currently
+     * it is not used by anyone, its use count will off by one. */
+    /* TODO(makowalski): rather than decrementing the use count, should
+     * we just call BKE_id_free_us() on the cache_file id when cleaning up? */
+    id_us_min(&cache_file->id);
+
+    cache_file->is_sequence = data->params.is_sequence;
+    cache_file->scale = data->params.scale;
+    STRNCPY(cache_file->filepath, data->filename);
+  }
 
   // Optionally print the stage contents for debugging.
   if (data->params.debug) {
diff --git a/source/blender/io/usd/usd.h b/source/blender/io/usd/usd.h
index d993d7d62cf..cd3ff47ab68 100644
--- a/source/blender/io/usd/usd.h
+++ b/source/blender/io/usd/usd.h
@@ -65,6 +65,8 @@ struct USDImportParams {
   bool use_instancing;
   float light_intensity_scale;
   bool import_usdpreview;
+  bool is_sequence;
+  bool transform_constraint;
 };
 
 /* The USD_import function takes a as_background_job parameter, and returns a boolean.