1 files changed, 146 insertions, 0 deletions
diff --git a/vector.cpp b/vector.cpp
new file mode 100644
index 0000000..2da8c99
--- /dev/null
+++ b/vector.cpp
@@ -0,0 +1,146 @@
+#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();
+}