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#include "vector.h"
#include <boost/format.hpp>
#include <cmath>
#include <string>
Vector2::Vector2() {
x = y = 0;
}
Vector2::Vector2(const Vector2& v) {
x = v.x;
y = v.y;
}
Vector2::Vector2(float x, float y) {
this->x = x;
this->y = y;
}
bool Vector2::operator==(const Vector2& v) const {
return x == v.x && y == v.y;
}
Vector2& Vector2::operator+=(const Vector2& v) {
x += v.x;
y += v.y;
return *this;
}
Vector2& Vector2::operator-=(const Vector2& v) {
x -= v.x;
y -= v.y;
return *this;
}
Vector2 Vector2::operator-(const Vector2& v) {
return Vector2(*this) -= v;
}
Vector2& Vector2::operator*=(const float f) {
x *= f;
y *= f;
return *this;
}
Vector2& Vector2::operator/=(const float f) {
x /= f;
y /= f;
return *this;
}
float Vector2::length() {
return sqrtf(x*x + y*y);
}
std::string Vector2::str() {
return (boost::format("[%.2f %.2f]") % x % y).str();
}
/**
* Vector3
*/
Vector3::Vector3() {
x = y = z = 0;
}
Vector3::Vector3(const Vector3& v) : Vector2(v) {
z = v.z;
}
Vector3::Vector3(float x, float y, float z) : Vector2(x, y) {
this->z = z;
}
bool Vector3::operator==(const Vector3& v) {
return x == v.x && y == v.y && z == v.z;
}
Vector3& Vector3::operator+=(const Vector3& v) {
x += v.x;
y += v.y;
z += v.z;
return *this;
}
Vector3 Vector3::operator+(const Vector3& v) {
return Vector3(*this) += v;
}
Vector3& Vector3::operator-=(const Vector3& v) {
x -= v.x;
y -= v.y;
z -= v.z;
return *this;
}
Vector3 Vector3::operator-(const Vector3& v) {
return Vector3(*this) -= v;
}
Vector3& Vector3::operator*=(const float f) {
x *= f;
y *= f;
z *= f;
return *this;
}
Vector3 Vector3::operator*(const float f) {
return Vector3(*this) *= f;
}
Vector3& Vector3::operator/=(const float f) {
x /= f;
y /= f;
z /= f;
return *this;
}
Vector3 Vector3::operator/(const float f) {
return Vector3(*this) /= f;
}
Vector3 Vector3::cross(const Vector3& v) {
return Vector3(y*v.z - z*v.y,
z*v.x - x*v.z,
x*v.y - y*v.x);
}
float Vector3::dot(const Vector3& v) {
return x*v.x + y*v.y + z*v.z;
}
Vector2 Vector3::xz() {
return Vector2(x, z);
}
float Vector3::length() {
return sqrtf(x*x + y*y + z*z);
}
std::string Vector3::str() {
return (boost::format("[%.2f %.2f %.2f]") % x % y % z).str();
}
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