100 lines
2.0 KiB
C++
100 lines
2.0 KiB
C++
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#include "Vector.h"
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#include <iostream>
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#include <math.h>
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Vector::Vector()
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{
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m_array[0] = 0.0;
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m_array[1] = 0.0;
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m_array[2] = 0.0;
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}
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Vector::Vector(double x, double y, double z)
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{
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m_array[0] = x;
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m_array[1] = y;
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m_array[2] = z;
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}
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Vector & Vector::normalize()
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{
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double length = mag();
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m_array[0] /= length;
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m_array[1] /= length;
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m_array[2] /= length;
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return *this;
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}
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double Vector::mag() const
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{
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return sqrt(m_array[0] * m_array[0]
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+ m_array[1] * m_array[1]
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+ m_array[2] * m_array[2]);
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}
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double Vector::mag2() const
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{
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return m_array[0] * m_array[0]
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+ m_array[1] * m_array[1]
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+ m_array[2] * m_array[2];
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}
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std::ostream & operator<<(std::ostream & out, const Vector & v)
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{
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out << "[" << v[0] << ", " << v[1] << ", " << v[2] << "]";
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return out;
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}
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/* Compute the dot-product of two vectors */
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double operator%(const Vector & v1, const Vector & v2)
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{
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return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];
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}
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/* Compute the cross-product of two vectors */
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Vector operator*(const Vector & v1, const Vector & v2)
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{
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Vector result;
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result[0] = v1[1] * v2[2] - v1[2] * v2[1];
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result[1] = v1[2] * v2[0] - v1[0] * v2[2];
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result[2] = v1[0] * v2[1] - v1[1] * v2[0];
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return result;
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}
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Vector operator+(const Vector & v1, const Vector & v2)
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{
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Vector result;
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result[0] = v1[0] + v2[0];
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result[1] = v1[1] + v2[1];
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result[2] = v1[2] + v2[2];
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return result;
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}
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Vector operator-(const Vector & v1, const Vector & v2)
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{
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Vector result;
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result[0] = v1[0] - v2[0];
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result[1] = v1[1] - v2[1];
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result[2] = v1[2] - v2[2];
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return result;
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}
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Vector operator*(const Vector & v1, double scale)
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{
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Vector result = v1;
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result[0] *= scale;
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result[1] *= scale;
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result[2] *= scale;
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return result;
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}
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Vector operator/(const Vector & v1, double scale)
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{
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Vector result = v1;
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result[0] /= scale;
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result[1] /= scale;
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result[2] /= scale;
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return result;
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}
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