1 files changed, 60 insertions, 0 deletions
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.hh b/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.hh
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+++ b/source/blender/io/wavefront_obj/exporter/obj_export_nurbs.hh
@@ -0,0 +1,60 @@
+/*
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2020 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup obj
+ */
+
+#pragma once
+
+#include "BLI_utility_mixins.hh"
+
+#include "DNA_curve_types.h"
+
+namespace blender::io::obj {
+
+/**
+ * Provides access to the a Curve Object's properties.
+ * Only #CU_NURBS type is supported.
+ *
+ * \note Used for Curves to be exported in parameter form, and not converted to meshes.
+ */
+class OBJCurve : NonCopyable {
+ private:
+  const Object *export_object_eval_;
+  const Curve *export_curve_;
+  float world_axes_transform_[4][4];
+
+ public:
+  OBJCurve(const Depsgraph *depsgraph, const OBJExportParams &export_params, Object *curve_object);
+
+  const char *get_curve_name() const;
+  int total_splines() const;
+  int total_spline_vertices(const int spline_index) const;
+  float3 vertex_coordinates(const int spline_index,
+                            const int vertex_index,
+                            const float scaling_factor) const;
+  int total_spline_control_points(const int spline_index) const;
+  int get_nurbs_degree(const int spline_index) const;
+
+ private:
+  void set_world_axes_transform(const eTransformAxisForward forward, const eTransformAxisUp up);
+};
+
+}  // namespace blender::io::obj