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38 lines
784 B
C++
38 lines
784 B
C++
#pragma once
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template< typename T >
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class vec3{
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private:
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std::array<T,3> data_;
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T &x,&y,&z;
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public:
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vec3()
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: x(data_[0]),y(data_[1]),z(data_[2]){}
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vec3( const vec3<T> &v)
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: data_(v.data_), x(data_[0]),y(data_[1]),z(data_[2]){}
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vec3( vec3<T> &&v)
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: data_(std::move(v.data_)), x(data_[0]),y(data_[1]),z(data_[2]){}
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T &operator[](size_t i){ return data_[i];}
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const T &operator[](size_t i) const { return data_[i]; }
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T dot(const vec3<T> &a) const
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{
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return data_[0] * a.data_[0] + data_[1] * a.data_[1] + data_[2] * a.data_[2];
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}
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T norm_squared(void) const
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{
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return this->dot(*this);
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}
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T norm(void) const
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{
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return std::sqrt( this->norm_squared() );
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}
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};
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