/usr/include/ClanLib-1.0/ClanLib/Core/Math/rect.h is in libclanlib-dev 1.0~svn3827-3build1.
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** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
//! clanCore="Math"
//! header=core.h
#ifndef header_rect
#define header_rect
#ifdef CL_API_DLL
#ifdef CL_CORE_EXPORT
#define CL_API_CORE __declspec(dllexport)
#else
#define CL_API_CORE __declspec(dllimport)
#endif
#else
#define CL_API_CORE
#endif
#if _MSC_VER > 1000
#pragma once
#endif
#include "size.h"
#include "point.h"
#include "origin.h"
class CL_Rectf;
//: 2D (left,top,right,bottom) rectangle structure.
//- !group=Core/Math!
//- !header=core.h!
class CL_API_CORE CL_Rect
{
//! Construction:
public:
//: Constructs an rectangle.
//param left: Initial left position of rectangle.
//param top: Initial top position of rectangle.
//param right: Initial right position of rectangle.
//param bottom: Initial bottom position of rectangle.
//param point: Initial top-left position of rectangle.
//param size: Initial size of rectangle.
//param rect: Initial rectangle position and size.
CL_Rect() { left = right = top = bottom = 0; }
explicit CL_Rect(const CL_Rectf& rect);
CL_Rect(int new_left, int new_top, int new_right, int new_bottom)
{ left = new_left; top = new_top; right = new_right; bottom = new_bottom; }
CL_Rect(const CL_Point &p, const CL_Size &size)
{ left = p.x; top = p.y; right = left + size.width; bottom = top + size.height; }
CL_Rect(const CL_Rect &rect)
{ left = rect.left; top = rect.top; right = rect.right; bottom = rect.bottom; }
//: Rect += Rect operator.
CL_Rect &operator+=(const CL_Rect &r)
{ left += r.left; top += r.top; right += r.right; bottom += r.bottom; return *this; }
//: Rect -= Rect operator.
CL_Rect &operator-=(const CL_Rect &r)
{ left -= r.left; top -= r.top; right -= r.right; bottom -= r.bottom; return *this; }
//: Rect += Point operator.
CL_Rect &operator+=(const CL_Point &p)
{ left += p.x; top += p.y; right += p.x; bottom += p.y; return *this; }
//: Rect -= Point operator.
CL_Rect &operator-=(const CL_Point &p)
{ left -= p.x; top -= p.y; right -= p.x; bottom -= p.y; return *this; }
//: Rect + Rect operator.
CL_Rect operator+(const CL_Rect &r) const
{ return CL_Rect(left + r.left, top + r.top, right + r.right, bottom + r.bottom); }
//: Rect - Rect operator.
CL_Rect operator-(const CL_Rect &r) const
{ return CL_Rect(left - r.left, top - r.top, right - r.right, bottom - r.bottom); }
//: Rect + Point operator.
CL_Rect operator+(const CL_Point &p) const
{ return CL_Rect(left + p.x, top + p.y, right + p.x, bottom + p.y); }
//: Rect - Point operator.
CL_Rect operator-(const CL_Point &p) const
{ return CL_Rect(left - p.x, top - p.y, right - p.x, bottom - p.y); }
//: Rect == Rect operator.
bool operator==(const CL_Rect &r) const
{ return (left == r.left && top == r.top && right == r.right && bottom == r.bottom); }
//: Rect != Rect operator.
bool operator!=(const CL_Rect &r) const
{ return (left != r.left || top != r.top || right != r.right || bottom != r.bottom); }
//! Attributes:
public:
//: X1-coordinate.
int left;
//: Y1-coordinate.
int top;
//: X2-coordinate.
int right;
//: Y2-coordinate.
int bottom;
//: Returns the width of the rectangle.
int get_width() const { return right - left; }
//: Returns the height of the rectangle.
int get_height() const { return bottom - top; }
//: Returns the size of the rectangle.
CL_Size get_size() const { return CL_Size(right - left, bottom - top); }
//: Returns true if point is inside the rectangle.
bool is_inside(const CL_Point &p) const { return (p.x >= left && p.y >= top && p.x <= right && p.y <= bottom); }
//: Returns true if rectangle passed is overlapping or inside this rectangle.
bool is_overlapped(const CL_Rect &r) const
{
return (r.left < right && r.right > left && r.top < bottom && r.bottom > top);
}
//: Returns another CL_Rect containing a rotated version of this one.
//param hotspot: Point to rotate around.
//param origin: Determines the hotspot point within the rectangle
//param x, y: Offsets applied negatively to the hotspot point
//param angle: Angle to rotate in degrees.
CL_Rect get_rot_bounds(const CL_Point &hotspot, float angle) const;
CL_Rect get_rot_bounds(CL_Origin origin, int x, int y, float angle) const;
//! Operations:
public:
//: Sets the size of the rectangle, maintaining top/left position.
void set_size(const CL_Size &size)
{
right = left + size.width;
bottom = top + size.height;
}
//: Calculates and returns the union of two rectangles.
CL_Rect calc_union(const CL_Rect &rect)
{
CL_Rect result;
if (left > rect.left) result.left = left; else result.left = rect.left;
if (right < rect.right) result.right = right; else result.right = rect.right;
if (top > rect.top) result.top = top; else result.top = rect.top;
if (bottom < rect.bottom) result.bottom = bottom; else result.bottom = rect.bottom;
return result;
}
//: Normalize rectangle. Ensures that left is less than right and top is less than bottom.
void normalize()
{
if (left > right)
{
int temp = right;
right = left;
left = temp;
}
if (top > bottom)
{
int temp = bottom;
bottom = top;
top = temp;
}
}
//: Applies an origin and offset pair to this rectangle
//param origin: The new origin to adjust to from default upper-left position
//param x, y: Offsets applied negatively to each corner of the rectangle
void apply_alignment(CL_Origin origin, int x, int y)
{
CL_Point offset = calc_origin(origin, get_size());
offset.x -= x;
offset.y -= y;
left += offset.x;
top += offset.y;
right += offset.x;
bottom += offset.y;
}
};
//: 2D (left,top,right,bottom) floating point rectangle structure.
class CL_Rectf
{
//! Construction:
public:
//: Constructs an rectangle.
//param left: Initial left position of rectangle.
//param top: Initial top position of rectangle.
//param right: Initial right position of rectangle.
//param bottom: Initial bottom position of rectangle.
//param point: Initial top-left position of rectangle.
//param size: Initial size of rectangle.
//param rect: Initial rectangle position and size.
CL_Rectf() { left = right = top = bottom = 0.0f; }
CL_Rectf(const CL_Rect& rect)
: left((float)rect.left),
top((float)rect.top),
right((float)rect.right),
bottom((float)rect.bottom)
{}
CL_Rectf(float new_left, float new_top, float new_right, float new_bottom)
{ left = new_left; top = new_top; right = new_right; bottom = new_bottom; }
CL_Rectf(const CL_Pointf &p, const CL_Sizef &size)
{ left = p.x; top = p.y; right = left + size.width; bottom = top + size.height; }
CL_Rectf(const CL_Rectf &rect)
{ left = rect.left; top = rect.top; right = rect.right; bottom = rect.bottom; }
//: Rect += Rect operator.
CL_Rectf &operator+=(const CL_Rectf &r)
{ left += r.left; top += r.top; right += r.right; bottom += r.bottom; return *this; }
//: Rect -= Rect operator.
CL_Rectf &operator-=(const CL_Rectf &r)
{ left -= r.left; top -= r.top; right -= r.right; bottom -= r.bottom; return *this; }
//: Rect += Point operator.
CL_Rectf &operator+=(const CL_Pointf &p)
{ left += p.x; top += p.y; right += p.x; bottom += p.y; return *this; }
//: Rect -= Point operator.
CL_Rectf &operator-=(const CL_Pointf &p)
{ left -= p.x; top -= p.y; right -= p.x; bottom -= p.y; return *this; }
//: Rect + Rect operator.
CL_Rectf operator+(const CL_Rectf &r) const
{ return CL_Rectf(left + r.left, top + r.top, right + r.right, bottom + r.bottom); }
//: Rect - Rect operator.
CL_Rectf operator-(const CL_Rectf &r) const
{ return CL_Rectf(left - r.left, top - r.top, right - r.right, bottom - r.bottom); }
//: Rect + Point operator.
CL_Rectf operator+(const CL_Pointf &p) const
{ return CL_Rectf(left + p.x, top + p.y, right + p.x, bottom + p.y); }
//: Rect - Point operator.
CL_Rectf operator-(const CL_Pointf &p) const
{ return CL_Rectf(left - p.x, top - p.y, right - p.x, bottom - p.y); }
//: Rect == Rect operator.
bool operator==(const CL_Rectf &r) const
{ return (left == r.left && top == r.top && right == r.right && bottom == r.bottom); }
//: Rect != Rect operator.
bool operator!=(const CL_Rect &r) const
{ return (left != r.left || top != r.top || right != r.right || bottom != r.bottom); }
//! Attributes:
public:
//: X1-coordinate.
float left;
//: Y1-coordinate.
float top;
//: X2-coordinate.
float right;
//: Y2-coordinate.
float bottom;
//: Returns the width of the rectangle.
float get_width() const { return right - left; }
//: Returns the height of the rectangle.
float get_height() const { return bottom - top; }
//: Returns the size of the rectangle.
CL_Sizef get_size() const { return CL_Sizef(right - left, bottom - top); }
//: Returns true if point is inside the rectangle.
bool is_inside(const CL_Pointf &p) const { return (p.x >= left && p.y >= top && p.x <= right && p.y <= bottom); }
//: Returns true if rectangle passed is overlapping or inside this rectangle.
bool is_overlapped(const CL_Rectf &r) const
{
return (r.left < right && r.right > left && r.top < bottom && r.bottom > top);
}
//: Returns another CL_Rectf containing a rotated version of this one.
//param hotspot: Point to rotate around.
//param origin: Determines the hotspot point within the rectangle
//param x, y: Offsets applied negatively to the hotspot point
//param angle: Angle to rotate in degrees.
CL_Rectf get_rot_bounds(const CL_Pointf &hotspot, float angle) const;
CL_Rectf get_rot_bounds(CL_Origin origin, float x, float y, float angle) const;
//! Operations:
public:
//: Sets the size of the rectangle, maintaining top/left position.
void set_size(const CL_Size &size)
{
right = left + size.width;
bottom = top + size.height;
}
//: Calculates and returns the union of two rectangles.
CL_Rectf calc_union(const CL_Rectf &rect)
{
CL_Rectf result;
if (left > rect.left) result.left = left; else result.left = rect.left;
if (right < rect.right) result.right = right; else result.right = rect.right;
if (top > rect.top) result.top = top; else result.top = rect.top;
if (bottom < rect.bottom) result.bottom = bottom; else result.bottom = rect.bottom;
return result;
}
//: Normalize rectangle. Ensures that left<right and top<bottom.
void normalize()
{
if (left > right)
{
float temp = right;
right = left;
left = temp;
}
if (top > bottom)
{
float temp = bottom;
bottom = top;
top = temp;
}
}
//: Applies an origin and offset pair to this rectangle
//param origin: The new origin to adjust to from default upper-left position
//param x, y: Offsets applied negatively to each corner of the rectangle
void apply_alignment(CL_Origin origin, float x, float y)
{
CL_Pointf offset = calc_origin(origin, get_size());
offset.x -= x;
offset.y -= y;
left += offset.x;
top += offset.y;
right += offset.x;
bottom += offset.y;
}
};
inline CL_Rect::CL_Rect(const CL_Rectf& rect)
: left(static_cast<int>(rect.left)),
top(static_cast<int>(rect.top)),
right(static_cast<int>(rect.right)),
bottom(static_cast<int>(rect.bottom))
{}
#endif
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