jabyengine/include/math.hpp

78 lines
2.1 KiB
C++

#pragma once
#include "stdint.hpp"
namespace math {
template<typename T>
struct raw_math {
constexpr T operator-() const {
return T{.raw = static_cast<decltype(T::raw)>(-(static_cast<const T&>(*this).raw))};
}
constexpr T operator+(const T& obj) const {
return T{.raw = static_cast<const T&>(*this).raw + obj.raw};
}
constexpr T operator-(const T& b) const {}
constexpr T& operator+=(const T& obj) {
static_cast<T&>(*this).raw += obj.raw;
return static_cast<T&>(*this);
}
constexpr T& operator-=(const T& obj) {
static_cast<T&>(*this).raw -= obj.raw;
return static_cast<T&>(*this);
}
};
}
struct deg_t : public math::raw_math<deg_t> {
static constexpr auto full_circle = 32768;
static constexpr auto one_degree = full_circle/360;
static constexpr auto one_tenth_degree = full_circle/3600;
int16_t raw;
static constexpr deg_t zero() {
return deg_t{.raw = 0};
}
static constexpr deg_t from_degree(int32_t deg) {
return deg_t{.raw = static_cast<int16_t>(deg*one_degree)};
}
static constexpr deg_t from_tenth_degree(int32_t deg10) {
return deg_t{.raw = static_cast<int16_t>(deg10*one_tenth_degree)};
}
};
static constexpr deg_t operator""_deg(long double degree) {
return deg_t::from_tenth_degree((degree*10.0));
}
struct gte_float : public math::raw_math<gte_float> {
int32_t raw;
static constexpr gte_float from_double(double value) {
return gte_float{.raw = static_cast<int32_t>(4096.0*value)};
}
static constexpr gte_float one() {
return gte_float::from_double(1.0);
}
constexpr explicit operator int32_t() const {
return this->raw;
}
constexpr explicit operator int16_t() const {
return static_cast<int16_t>(this->raw);
}
};
static constexpr gte_float operator""_gf(long double value) {
return gte_float::from_double(value);
}
gte_float sin(deg_t value);
gte_float cos(deg_t value);