// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef Vector_hpp
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#define Vector_hpp
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namespace sw
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{
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struct Point;
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struct Matrix;
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struct Plane;
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struct Vector
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{
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Vector();
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Vector(const int i);
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Vector(const Vector &v);
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Vector(const Point &p);
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Vector(float v_x, float v_y, float v_z);
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Vector &operator=(const Vector &v);
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union
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{
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float v[3];
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struct
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{
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float x;
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float y;
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float z;
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};
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};
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float &operator[](int i);
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float &operator()(int i);
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const float &operator[](int i) const;
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const float &operator()(int i) const;
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Vector operator+() const;
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Vector operator-() const;
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Vector &operator+=(const Vector &v);
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Vector &operator-=(const Vector &v);
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Vector &operator*=(float s);
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Vector &operator/=(float s);
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friend bool operator==(const Vector &u, const Vector &v);
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friend bool operator!=(const Vector &u, const Vector &v);
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friend Vector operator+(const Vector &u, const Vector &v);
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friend Vector operator-(const Vector &u, const Vector &v);
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friend float operator*(const Vector &u, const Vector &v); // Dot product
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friend Vector operator*(float s, const Vector &v);
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friend Vector operator*(const Vector &v, float s);
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friend Vector operator/(const Vector &v, float s);
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friend float operator^(const Vector &u, const Vector &v); // Angle between vectors
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friend Vector operator%(const Vector &u, const Vector &v); // Cross product
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friend Vector operator*(const Matrix &M, const Vector& v);
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friend Vector operator*(const Vector &v, const Matrix &M);
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friend Vector &operator*=(Vector &v, const Matrix &M);
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static float N(const Vector &v); // Norm
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static float N2(const Vector &v); // Squared norm
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static Vector mirror(const Vector &v, const Plane &p);
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static Vector reflect(const Vector &v, const Plane &p);
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static Vector lerp(const Vector &u, const Vector &v, float t);
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};
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}
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#include "Point.hpp"
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namespace sw
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{
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inline Vector::Vector()
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{
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}
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inline Vector::Vector(const int i)
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{
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const float s = (float)i;
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x = s;
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y = s;
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z = s;
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}
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inline Vector::Vector(const Vector &v)
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{
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x = v.x;
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y = v.y;
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z = v.z;
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}
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inline Vector::Vector(const Point &P)
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{
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x = P.x;
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y = P.y;
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z = P.z;
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}
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inline Vector::Vector(float v_x, float v_y, float v_z)
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{
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x = v_x;
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y = v_y;
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z = v_z;
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}
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inline Vector &Vector::operator=(const Vector &v)
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{
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x = v.x;
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y = v.y;
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z = v.z;
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return *this;
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}
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inline float &Vector::operator()(int i)
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{
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return v[i];
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}
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inline float &Vector::operator[](int i)
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{
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return v[i];
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}
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inline const float &Vector::operator()(int i) const
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{
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return v[i];
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}
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inline const float &Vector::operator[](int i) const
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{
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return v[i];
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}
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}
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#endif // Vector_hpp
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