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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* geometry.h - Geometry-related classes
*/
#ifndef __LIBCAMERA_GEOMETRY_H__
#define __LIBCAMERA_GEOMETRY_H__
#include <algorithm>
#include <string>
#include <libcamera/compiler.h>
namespace libcamera {
class Rectangle;
class Point
{
public:
constexpr Point()
: x(0), y(0)
{
}
constexpr Point(int xpos, int ypos)
: x(xpos), y(ypos)
{
}
int x;
int y;
const std::string toString() const;
constexpr Point operator-() const
{
return { -x, -y };
}
};
bool operator==(const Point &lhs, const Point &rhs);
static inline bool operator!=(const Point &lhs, const Point &rhs)
{
return !(lhs == rhs);
}
class Size
{
public:
constexpr Size()
: Size(0, 0)
{
}
constexpr Size(unsigned int w, unsigned int h)
: width(w), height(h)
{
}
unsigned int width;
unsigned int height;
bool isNull() const { return !width && !height; }
const std::string toString() const;
Size &alignDownTo(unsigned int hAlignment, unsigned int vAlignment)
{
width = width / hAlignment * hAlignment;
height = height / vAlignment * vAlignment;
return *this;
}
Size &alignUpTo(unsigned int hAlignment, unsigned int vAlignment)
{
width = (width + hAlignment - 1) / hAlignment * hAlignment;
height = (height + vAlignment - 1) / vAlignment * vAlignment;
return *this;
}
Size &boundTo(const Size &bound)
{
width = std::min(width, bound.width);
height = std::min(height, bound.height);
return *this;
}
Size &expandTo(const Size &expand)
{
width = std::max(width, expand.width);
height = std::max(height, expand.height);
return *this;
}
__nodiscard constexpr Size alignedDownTo(unsigned int hAlignment,
unsigned int vAlignment) const
{
return {
width / hAlignment * hAlignment,
height / vAlignment * vAlignment
};
}
__nodiscard constexpr Size alignedUpTo(unsigned int hAlignment,
unsigned int vAlignment) const
{
return {
(width + hAlignment - 1) / hAlignment * hAlignment,
(height + vAlignment - 1) / vAlignment * vAlignment
};
}
__nodiscard constexpr Size boundedTo(const Size &bound) const
{
return {
std::min(width, bound.width),
std::min(height, bound.height)
};
}
__nodiscard constexpr Size expandedTo(const Size &expand) const
{
return {
std::max(width, expand.width),
std::max(height, expand.height)
};
}
__nodiscard Size boundedToAspectRatio(const Size &ratio) const;
__nodiscard Size expandedToAspectRatio(const Size &ratio) const;
__nodiscard Rectangle centeredTo(const Point ¢er) const;
Size operator*(float factor) const;
Size operator/(float factor) const;
Size &operator*=(float factor);
Size &operator/=(float factor);
};
bool operator==(const Size &lhs, const Size &rhs);
bool operator<(const Size &lhs, const Size &rhs);
static inline bool operator!=(const Size &lhs, const Size &rhs)
{
return !(lhs == rhs);
}
static inline bool operator<=(const Size &lhs, const Size &rhs)
{
return lhs < rhs || lhs == rhs;
}
static inline bool operator>(const Size &lhs, const Size &rhs)
{
return !(lhs <= rhs);
}
static inline bool operator>=(const Size &lhs, const Size &rhs)
{
return !(lhs < rhs);
}
class SizeRange
{
public:
SizeRange()
: hStep(0), vStep(0)
{
}
SizeRange(const Size &size)
: min(size), max(size), hStep(1), vStep(1)
{
}
SizeRange(const Size &minSize, const Size &maxSize)
: min(minSize), max(maxSize), hStep(1), vStep(1)
{
}
SizeRange(const Size &minSize, const Size &maxSize,
unsigned int hstep, unsigned int vstep)
: min(minSize), max(maxSize), hStep(hstep), vStep(vstep)
{
}
bool contains(const Size &size) const;
std::string toString() const;
Size min;
Size max;
unsigned int hStep;
unsigned int vStep;
};
bool operator==(const SizeRange &lhs, const SizeRange &rhs);
static inline bool operator!=(const SizeRange &lhs, const SizeRange &rhs)
{
return !(lhs == rhs);
}
class Rectangle
{
public:
constexpr Rectangle()
: Rectangle(0, 0, 0, 0)
{
}
constexpr Rectangle(int xpos, int ypos, const Size &size)
: x(xpos), y(ypos), width(size.width), height(size.height)
{
}
constexpr Rectangle(int xpos, int ypos, unsigned int w, unsigned int h)
: x(xpos), y(ypos), width(w), height(h)
{
}
constexpr explicit Rectangle(const Size &size)
: x(0), y(0), width(size.width), height(size.height)
{
}
int x;
int y;
unsigned int width;
unsigned int height;
bool isNull() const { return !width && !height; }
const std::string toString() const;
Point center() const;
Size size() const
{
return { width, height };
}
Point topLeft() const
{
return { x, y };
}
Rectangle &scaleBy(const Size &numerator, const Size &denominator);
Rectangle &translateBy(const Point &point);
__nodiscard Rectangle boundedTo(const Rectangle &bound) const;
__nodiscard Rectangle enclosedIn(const Rectangle &boundary) const;
__nodiscard Rectangle scaledBy(const Size &numerator,
const Size &denominator) const;
__nodiscard Rectangle translatedBy(const Point &point) const;
};
bool operator==(const Rectangle &lhs, const Rectangle &rhs);
static inline bool operator!=(const Rectangle &lhs, const Rectangle &rhs)
{
return !(lhs == rhs);
}
} /* namespace libcamera */
#endif /* __LIBCAMERA_GEOMETRY_H__ */
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