149 lines
4.7 KiB
C
149 lines
4.7 KiB
C
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (ASSIMP)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2008, ASSIMP Development Team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the ASSIMP team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the ASSIMP Development Team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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/** @file 2D vector structure, including operators when compiling in C++ */
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#ifndef AI_VECTOR2D_H_INC
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#define AI_VECTOR2D_H_INC
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#include <math.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "./Compiler/pushpack1.h"
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// ---------------------------------------------------------------------------
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/** Represents a two-dimensional vector. */
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struct aiVector2D
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{
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#ifdef __cplusplus
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aiVector2D () : x(0.0f), y(0.0f) {}
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aiVector2D (float _x, float _y) : x(_x), y(_y) {}
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aiVector2D (float _xyz) : x(_xyz), y(_xyz) {}
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aiVector2D (const aiVector2D& o) : x(o.x), y(o.y) {}
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void Set( float pX, float pY) { x = pX; y = pY;}
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float SquareLength() const { return x*x + y*y; }
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float Length() const { return sqrt( SquareLength()); }
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aiVector2D& Normalize() { *this /= Length(); return *this; }
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const aiVector2D& operator += (const aiVector2D& o) { x += o.x; y += o.y; return *this; }
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const aiVector2D& operator -= (const aiVector2D& o) { x -= o.x; y -= o.y; return *this; }
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const aiVector2D& operator *= (float f) { x *= f; y *= f; return *this; }
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const aiVector2D& operator /= (float f) { x /= f; y /= f; return *this; }
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inline float operator[](unsigned int i) const {return *(&x + i);}
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inline float& operator[](unsigned int i) {return *(&x + i);}
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inline bool operator== (const aiVector2D& other) const
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{return x == other.x && y == other.y;}
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inline bool operator!= (const aiVector2D& other) const
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{return x != other.x || y != other.y;}
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inline aiVector2D& operator= (float f)
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{x = y = f;return *this;}
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const aiVector2D SymMul(const aiVector2D& o)
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{return aiVector2D(x*o.x,y*o.y);}
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#endif // __cplusplus
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float x, y;
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} PACK_STRUCT;
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#include "./Compiler/poppack1.h"
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#ifdef __cplusplus
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} // end extern "C"
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// symmetric addition
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inline aiVector2D operator + (const aiVector2D& v1, const aiVector2D& v2)
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{
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return aiVector2D( v1.x + v2.x, v1.y + v2.y);
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}
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// symmetric subtraction
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inline aiVector2D operator - (const aiVector2D& v1, const aiVector2D& v2)
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{
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return aiVector2D( v1.x - v2.x, v1.y - v2.y);
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}
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// scalar product
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inline float operator * (const aiVector2D& v1, const aiVector2D& v2)
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{
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return v1.x*v2.x + v1.y*v2.y;
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}
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// scalar multiplication
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inline aiVector2D operator * ( float f, const aiVector2D& v)
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{
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return aiVector2D( f*v.x, f*v.y);
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}
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// and the other way around
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inline aiVector2D operator * ( const aiVector2D& v, float f)
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{
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return aiVector2D( f*v.x, f*v.y);
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}
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// scalar division
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inline aiVector2D operator / ( const aiVector2D& v, float f)
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{
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return v * (1/f);
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}
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// vector division
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inline aiVector2D operator / ( const aiVector2D& v, const aiVector2D& v2)
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{
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return aiVector2D(v.x / v2.x,v.y / v2.y);
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}
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// vector inversion
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inline aiVector2D operator - ( const aiVector2D& v)
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{
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return aiVector2D( -v.x, -v.y);
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}
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#endif // __cplusplus
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#endif // AI_VECTOR2D_H_INC
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