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#pragma once
#include "Matrix.hpp"
#include "Vec.hpp"
class Point
{
public:
Point()
: x(0), y(0), z(0), w(1)
{}
Point(float x, float y, float z)
: x(x), y(y), z(z), w(1)
{}
Point operator-() const
{
return Point(
-x,
-y,
-z);
}
Vector operator-(Point const& rhs) const
{
return Vector(
x - rhs.x,
y - rhs.y,
z - rhs.z);
}
Point operator*(Matrix const& rhs)
{
Point result;
for (int col = 0; col < 4; ++col)
{
float sum = 0.0;
for (int row = 0; row < 4; ++row)
{
sum += e[row] * rhs.e[row][col];
}
result.e[col] = sum;
}
return result;
}
Point& operator*=(Matrix const& rhs)
{
*this = *this * rhs;
return *this;
}
Point operator/(float rhs) const
{
float inverse = 1.0f / rhs;
return Point(
x * inverse,
y * inverse,
z * inverse);
}
Point& operator/=(float rhs)
{
x /= rhs;
y /= rhs;
z /= rhs;
return *this;
}
union
{
float e[4];
struct
{
float x, y, z, w;
};
};
};