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diff --git a/thirdparty/thorvg/src/lib/tvgBezier.h b/thirdparty/thorvg/src/lib/tvgBezier.h
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+/*
+ * Copyright (c) 2020-2021 Samsung Electronics Co., Ltd. All rights reserved.
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef _TVG_BEZIER_H_
+#define _TVG_BEZIER_H_
+
+#include "tvgCommon.h"
+
+namespace tvg
+{
+
+#define BEZIER_EPSILON 1e-4f
+
+struct Bezier
+{
+ Point start;
+ Point ctrl1;
+ Point ctrl2;
+ Point end;
+};
+
+void bezSplit(const Bezier&cur, Bezier& left, Bezier& right);
+float bezLength(const Bezier& cur);
+void bezSplitLeft(Bezier& cur, float at, Bezier& left);
+float bezAt(const Bezier& bz, float at);
+void bezSplitAt(const Bezier& cur, float at, Bezier& left, Bezier& right);
+
+}
+
+#endif //_TVG_BEZIER_H_