Program Listing for File Vector.hpp

↰ Return to documentation for file (include/ari/math/Vector.hpp)

#pragma once

#include <bx/math.h>
#include "arimath.hpp"

namespace ari
{
    struct Vector3
    {
        Vector3(): x(0.0f), y(0.0f), z(0.0f) { }

        Vector3(const float _x, const float _y, const float _z): x(_x), y(_y), z(_z) { }

        void Set(const float _x, const float _y, const float _z)
        {
            x = _x;
            y = _y;
            z = _z;
        }

        Vector3 operator-(const Vector3& v) const
        {
            return { x - v.x, y - v.y, z - v.z };
        }

        void Cross(const Vector3& _v1, const Vector3& _v2)
        {
            x = _v1.y*_v2.z - _v1.z*_v2.y;
            y = _v1.z*_v2.x - _v1.x*_v2.z;
            z = _v1.x*_v2.y - _v1.y*_v2.x;
        }

        float GetLength() const
        {
            return sqrtf(x*x + y * y + z * z);
        }

        void Normalize()
        {
            float length = GetLength();
            length = fEpsilon > length ? fEpsilon : length;
            x /= length;
            y /= length;
            z /= length;
        }

        bx::Vec3 ToVec3() const
        {
            return {
                x,
                y,
                z
            };
        }

        union
        {
            float v[3];
            struct {
                float x,
                    y,
                    z;
            };
        };
    }; // Vector3

} // ari