55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <algorithm>
|
|
#include <cstdlib>
|
|
#include <type_traits>
|
|
|
|
namespace MathUtil {
|
|
|
|
static constexpr float PI = 3.14159265f;
|
|
|
|
inline bool IntervalsIntersect(unsigned start0, unsigned length0, unsigned start1,
|
|
unsigned length1) {
|
|
return (std::max(start0, start1) < std::min(start0 + length0, start1 + length1));
|
|
}
|
|
|
|
template <typename T>
|
|
inline T Clamp(const T val, const T& min, const T& max) {
|
|
return std::max(min, std::min(max, val));
|
|
}
|
|
|
|
template <class T>
|
|
struct Rectangle {
|
|
T left;
|
|
T top;
|
|
T right;
|
|
T bottom;
|
|
|
|
Rectangle() {}
|
|
|
|
Rectangle(T left, T top, T right, T bottom)
|
|
: left(left), top(top), right(right), bottom(bottom) {}
|
|
|
|
T GetWidth() const {
|
|
return std::abs(static_cast<typename std::make_signed<T>::type>(right - left));
|
|
}
|
|
T GetHeight() const {
|
|
return std::abs(static_cast<typename std::make_signed<T>::type>(bottom - top));
|
|
}
|
|
Rectangle<T> TranslateX(const T x) const {
|
|
return Rectangle{left + x, top, right + x, bottom};
|
|
}
|
|
Rectangle<T> TranslateY(const T y) const {
|
|
return Rectangle{left, top + y, right, bottom + y};
|
|
}
|
|
Rectangle<T> Scale(const float s) const {
|
|
return Rectangle{left, top, static_cast<T>(left + GetWidth() * s),
|
|
static_cast<T>(top + GetHeight() * s)};
|
|
}
|
|
};
|
|
|
|
} // namespace MathUtil
|