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+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2017, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the
+ following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the
+ following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior
+ written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+/** @file vector2.h
+ * @brief 2D vector structure, including operators when compiling in C++
+ */
+#pragma once
+#ifndef AI_VECTOR2D_H_INC
+#define AI_VECTOR2D_H_INC
+
+#ifdef __cplusplus
+# include <cmath>
+#else
+# include <math.h>
+#endif
+
+#include "./Compiler/pushpack1.h"
+#include "defs.h"
+
+// ----------------------------------------------------------------------------------
+/** Represents a two-dimensional vector.
+ */
+
+#ifdef __cplusplus
+template <typename TReal>
+class aiVector2t
+{
+public:
+
+ aiVector2t () : x(), y() {}
+ aiVector2t (TReal _x, TReal _y) : x(_x), y(_y) {}
+ explicit aiVector2t (TReal _xyz) : x(_xyz), y(_xyz) {}
+ aiVector2t (const aiVector2t& o) : x(o.x), y(o.y) {}
+
+public:
+
+ void Set( TReal pX, TReal pY);
+ TReal SquareLength() const ;
+ TReal Length() const ;
+ aiVector2t& Normalize();
+
+public:
+
+ const aiVector2t& operator += (const aiVector2t& o);
+ const aiVector2t& operator -= (const aiVector2t& o);
+ const aiVector2t& operator *= (TReal f);
+ const aiVector2t& operator /= (TReal f);
+
+ TReal operator[](unsigned int i) const;
+ TReal& operator[](unsigned int i);
+
+ bool operator== (const aiVector2t& other) const;
+ bool operator!= (const aiVector2t& other) const;
+
+ bool Equal(const aiVector2t& other, TReal epsilon = 1e-6) const;
+
+ aiVector2t& operator= (TReal f);
+ const aiVector2t SymMul(const aiVector2t& o);
+
+ template <typename TOther>
+ operator aiVector2t<TOther> () const;
+
+ TReal x, y;
+} PACK_STRUCT;
+
+typedef aiVector2t<ai_real> aiVector2D;
+
+#else
+
+struct aiVector2D {
+ ai_real x, y;
+};
+
+#endif // __cplusplus
+
+#include "./Compiler/poppack1.h"
+
+#endif // AI_VECTOR2D_H_INC