1 files changed, 62 insertions, 0 deletions
diff --git a/source/blender/io/usd/intern/usd_reader_curve.h b/source/blender/io/usd/intern/usd_reader_curve.h
new file mode 100644
index 00000000000..1e676bbbd02
--- /dev/null
+++ b/source/blender/io/usd/intern/usd_reader_curve.h
@@ -0,0 +1,62 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Adapted from the Blender Alembic importer implementation,
+ * Copyright (C) 2016 Kévin Dietrich.
+ *
+ * Modifications Copyright (C) 2021 Tangent Animation.
+ * All rights reserved.
+ */
+#pragma once
+
+#include "usd.h"
+#include "usd_reader_geom.h"
+
+#include "pxr/usd/usdGeom/basisCurves.h"
+
+struct Curve;
+
+namespace blender::io::usd {
+
+class USDCurvesReader : public USDGeomReader {
+ protected:
+  pxr::UsdGeomBasisCurves curve_prim_;
+  Curve *curve_;
+
+ public:
+  USDCurvesReader(const pxr::UsdPrim &prim,
+                  const USDImportParams &import_params,
+                  const ImportSettings &settings)
+      : USDGeomReader(prim, import_params, settings), curve_prim_(prim), curve_(nullptr)
+  {
+  }
+
+  bool valid() const override
+  {
+    return static_cast<bool>(curve_prim_);
+  }
+
+  void create_object(Main *bmain, double motionSampleTime) override;
+  void read_object_data(Main *bmain, double motionSampleTime) override;
+
+  void read_curve_sample(Curve *cu, double motionSampleTime);
+
+  Mesh *read_mesh(struct Mesh *existing_mesh,
+                  double motionSampleTime,
+                  int read_flag,
+                  const char **err_str) override;
+};
+
+}  // namespace blender::io::usd