Source/Math/vec2.h


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//-----------------------------------------------------------------------------
//           Name: vec2.h
//      Developer: Wolfire Games LLC
//    Description:
//        License: Read below
//-----------------------------------------------------------------------------
//
//   Copyright 2022 Wolfire Games LLC
//
//   Licensed under the Apache License, Version 2.0 (the "License");
//   you may not use this file except in compliance with the License.
//   You may obtain a copy of the License at
//
//       http://www.apache.org/licenses/LICENSE-2.0
//
//   Unless required by applicable law or agreed to in writing, software
//   distributed under the License is distributed on an "AS IS" BASIS,
//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//   See the License for the specific language governing permissions and
//   limitations under the License.
//
//-----------------------------------------------------------------------------
#pragma once

#include <Math/ivec2.h>

#include <iostream>

class vec2{
    public:
        float entries[2];

        inline explicit vec2(float val = 0.0f) {
            entries[0] = val;
            entries[1] = val;
        }

        inline vec2(float newx, float newy) {
            entries[0] = newx;
            entries[1] = newy;
        }

        inline vec2(int newx, int newy) {
            entries[0] = (float)newx;
            entries[1] = (float)newy;
        }

        inline vec2( const ivec2& d )
        {
            entries[0] = (float)d[0];
            entries[1] = (float)d[1];
        }

        inline float& operator[](const int which) {
            return entries[which];
        }

        inline const float& operator[](const int which) const {
            return entries[which];
        }

        inline vec2& operator=(float param) {
            entries[0]=param;
            entries[1]=param;
            return *this;
        }

        inline vec2& operator=(const vec2 &param) {
            entries[0]=param.entries[0];
            entries[1]=param.entries[1];
            return *this;
        }

        inline vec2 operator/(const vec2 &param) {
            vec2 v;
            v[0] = entries[0]/param.entries[0];
            v[1] = entries[1]/param.entries[1];
            return v;
        }
    
        inline vec2 operator+(const vec2 &param) {
            vec2 v;
            v[0] = entries[0] + param.entries[0];
            v[1] = entries[1] + param.entries[1];
            return v;
        }
    
        inline vec2 operator-(const vec2 &param) {
            vec2 v;
            v[0] = entries[0] - param.entries[0];
            v[1] = entries[1] - param.entries[1];
            return v;
        }

        inline const float& x() const { return entries[0]; }
        inline const float& y() const { return entries[1]; }
        inline float& x() { return entries[0]; }
        inline float& y() { return entries[1]; }
};

inline std::ostream& operator<<(std::ostream& os, const vec2& v )
{
    os << "vec2(" << v[0] << "," << v[1] << ")";
    return os;
}