# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1437365305 -10800
# Node ID 8ab44b19895e21b575a45a1b5eefd2d26e1ae96d

graphene!!!

diff -r 000000000000 -r 8ab44b19895e .hgignore
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.hgignore	Mon Jul 20 07:08:25 2015 +0300
@@ -0,0 +1,3 @@
+\.o$
+\.d$
+\.swp$
diff -r 000000000000 -r 8ab44b19895e gmath/vec.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gmath/vec.h	Mon Jul 20 07:08:25 2015 +0300
@@ -0,0 +1,146 @@
+#ifndef GMATH_VEC_H_
+#define GMATH_VEC_H_
+
+#include <math.h>
+
+namespace gmath {
+
+class Vec3 {
+public:
+	float x, y, z;
+
+	Vec3() : x(0), y(0), z(0) {}
+	Vec3(float x_, float y_, float z_) : x(x_), y(y_), z(z_) {}
+
+	void normalize()
+	{
+		float len = length(*this);
+		if(len != 0.0f) {
+			x /= len;
+			y /= len;
+			z /= len;
+		}
+	}
+};
+
+inline Vec3 operator +(const Vec3 &a, const Vec3 &b)
+{
+	return Vec3(a.x + b.x, a.y + b.y, a.z + b.z);
+}
+
+inline Vec3 operator -(const Vec3 &a, const Vec3 &b)
+{
+	return Vec3(a.x - b.x, a.y - b.y, a.z - b.z);
+}
+
+inline Vec3 operator *(const Vec3 &a, const Vec3 &b)
+{
+	return Vec3(a.x * b.x, a.y * b.y, a.z * b.z);
+}
+
+inline Vec3 operator /(const Vec3 &a, const Vec3 &b)
+{
+	return Vec3(a.x / b.x, a.y / b.y, a.z / b.z);
+}
+
+inline Vec3 operator *(const Vec3 &v, float s)
+{
+	return Vec3(v.x * s, v.y * s, v.z * s);
+}
+
+inline Vec3 operator *(float s, const Vec3 &v)
+{
+	return Vec3(s * v.x, s * v.y, s * v.z);
+}
+
+inline Vec3 operator /(const Vec3 &v, float s)
+{
+	return Vec3(v.x / s, v.y / s, v.z / s);
+}
+
+inline Vec3 operator /(float s, const Vec3 &v)
+{
+	return Vec3(s / v.x, s / v.y, s / v.z);
+}
+
+inline Vec3 &operator +=(Vec3 &a, const Vec3 &b)
+{
+	a.x += b.x;
+	a.y += b.y;
+	a.z += b.z;
+	return *this;
+}
+
+inline Vec3 &operator -=(Vec3 &a, const Vec3 &b)
+{
+	a.x -= b.x;
+	a.y -= b.y;
+	a.z -= b.z;
+	return *this;
+}
+
+inline Vec3 &operator *=(Vec3 &a, const Vec3 &b)
+{
+	a.x *= b.x;
+	a.y *= b.y;
+	a.z *= b.z;
+	return *this;
+}
+
+inline Vec3 &operator /=(Vec3 &a, const Vec3 &b)
+{
+	a.x /= b.x;
+	a.y /= b.y;
+	a.z /= b.z;
+	return *this;
+}
+
+inline Vec3 &operator *=(Vec3 &v, float s)
+{
+	v.x *= s;
+	v.y *= s;
+	v.z *= s;
+	return *this;
+}
+
+inline Vec3 &operator /=(Vec3 &v, float s)
+{
+	v.x /= s;
+	v.y /= s;
+	v.z /= s;
+	return *this;
+}
+
+inline float dot(const Vec3 &a, const Vec3 &b)
+{
+	return a.x * b.x + a.y * b.y + a.z * b.z;
+}
+
+inline Vec3 cross(const Vec3 &a, const Vec3 &b)
+{
+	return Vec3(a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z, a.x * b.y - a.y * b.x);
+}
+
+inline float length(const Vec3 &v)
+{
+	return (float)sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
+}
+
+inline float length_sq(const Vec3 &v)
+{
+	return v.x * v.x + v.y * v.y + v.z * v.z;
+}
+
+inline Vec3 normalize(const Vec3 &v)
+{
+	float len = length(v);
+	if(len == 0.0f) {
+		return v;
+	}
+
+	return Vec3(v.x / len, v.y / len, v.z / len);
+}
+
+}
+
+#endif	/* GMATH_VEC_H_ */