/* date = June 10th 2025 1:05 pm */

#ifndef HANDMADE_MATH_H
#define HANDMADE_MATH_H


union v2
{
    struct 
    {
        r32 X, Y;
    };
    r32 E[2];
};

inline v2
V2(r32 X, r32 Y)
{
    v2 Result;
    
    Result.X = X;
    Result.Y = Y;
    
    return(Result);
}

inline v2
operator-(v2 A)
{
    v2 Result;
    
    Result.X = -A.X;
    Result.Y = -A.Y;
    
    return Result;
}

inline v2
operator+(v2 A, v2 B)
{
    v2 Result;
    
    Result.X = A.X + B.X;
    Result.Y = A.Y + B.Y;
    
    return Result;
}

inline v2
operator+(v2 A, r32 B)
{
    v2 Result;
    
    Result.X = A.X + B;
    Result.Y = A.Y + B;
    
    return Result;
}

inline v2
operator-(v2 A, v2 B)
{
    v2 Result;
    
    Result.X = A.X - B.X;
    Result.Y = A.Y - B.Y;
    
    return Result;
}

inline v2
operator-(v2 A, r32 B)
{
    v2 Result;
    Result = A + -B;
    return Result;
}

inline v2
operator*(r32 A, v2 B)
{
    v2 Result;
    
    Result.X = A*B.X;
    Result.Y = A*B.Y;
    
    return Result;
}

inline v2
operator*(v2 A, r32 B)
{
    return B*A;
}

inline v2
operator/(v2 A, r32 B)
{
    v2 Result;
    
    Result.X = A.X/B;
    Result.Y = A.Y/B;
    
    return Result;
}

inline v2 & 
operator*=(v2 &A, r32 B)
{
    A = B * A;
    return A;
}

inline v2 & 
operator+=(v2 &A, v2 B)
{
    A = A + B;
    return A;
}

inline 
r32 Square(r32 A)
{
    r32 Result = A*A;
    return Result;
}

inline 
r32 Inner(v2 A, v2 B)
{
    r32 Result = A.X*B.X + A.Y*B.Y;
    return Result;
}

inline
r32 LengthSq(v2 A)
{
    r32 Result = Inner(A, A);
    return Result;
}

#endif //HANDMADE_MATH_H