224 lines
8.5 KiB
C++
224 lines
8.5 KiB
C++
|
/**************************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* Visualization Library */
|
||
|
|
/* http://visualizationlibrary.org */
|
||
|
|
/* */
|
||
|
|
/* Copyright (c) 2005-2020, Michele Bosi */
|
||
|
|
/* All rights reserved. */
|
||
|
|
/* */
|
||
|
|
/* Redistribution and use in source and binary forms, with or without modification, */
|
||
|
|
/* are permitted provided that the following conditions are met: */
|
||
|
|
/* */
|
||
|
|
/* - Redistributions of source code must retain the above copyright notice, this */
|
||
|
|
/* list of conditions and the following disclaimer. */
|
||
|
|
/* */
|
||
|
|
/* - Redistributions in binary form must reproduce the above copyright notice, this */
|
||
|
|
/* list of conditions and the following disclaimer in the documentation and/or */
|
||
|
|
/* other materials provided with the distribution. */
|
||
|
|
/* */
|
||
|
|
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND */
|
||
|
|
/* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED */
|
||
|
|
/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
|
||
|
|
/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR */
|
||
|
|
/* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
|
||
|
|
/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */
|
||
|
|
/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
|
||
|
|
/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
|
||
|
|
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
|
||
|
|
/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
|
||
|
|
/* */
|
||
|
|
/**************************************************************************************/
|
||
|
|
|
||
|
|
#ifndef Rect_INCLUDE_ONCE
|
||
|
|
#define Rect_INCLUDE_ONCE
|
||
|
|
|
||
|
|
#include <vlCore/Vector2.hpp>
|
||
|
|
|
||
|
|
namespace vl
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* Implements the common functions of RectI and RectF.
|
||
|
|
*/
|
||
|
|
template<typename T>
|
||
|
|
class Rect
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
Rect(const Rect& other)
|
||
|
|
{
|
||
|
|
mX = other.x();
|
||
|
|
mY = other.y();
|
||
|
|
mWidth = other.width();
|
||
|
|
mHeight = other.height();
|
||
|
|
}
|
||
|
|
Rect()
|
||
|
|
{
|
||
|
|
// null Rect
|
||
|
|
mX = 0;
|
||
|
|
mY = 0;
|
||
|
|
mWidth = -1;
|
||
|
|
mHeight = -1;
|
||
|
|
}
|
||
|
|
Rect(T x, T y, T width, T height)
|
||
|
|
{
|
||
|
|
mX = x;
|
||
|
|
mY = y;
|
||
|
|
mWidth = width;
|
||
|
|
mHeight = height;
|
||
|
|
}
|
||
|
|
|
||
|
|
T x() const { return mX; }
|
||
|
|
T y() const { return mY; }
|
||
|
|
T width() const { return mWidth; }
|
||
|
|
T height() const { return mHeight; }
|
||
|
|
T bottom() const { return mY; }
|
||
|
|
T left() const { return mX; }
|
||
|
|
T top() const { return mY+mHeight-1; }
|
||
|
|
T right() const { return mX+mWidth-1; }
|
||
|
|
|
||
|
|
void setX(T x) { mX = x; }
|
||
|
|
void setY(T y) { mY = y; }
|
||
|
|
void setWidth(T w) { mWidth = w; }
|
||
|
|
void setHeight(T h) { mHeight = h; }
|
||
|
|
|
||
|
|
bool isNull() const { return width() < 0 || height() < 0; }
|
||
|
|
bool isPoint() const { return width() == 0 && height() == 0; }
|
||
|
|
|
||
|
|
Rect intersected(const Rect& other) const
|
||
|
|
{
|
||
|
|
if (isNull() || other.isNull())
|
||
|
|
return other;
|
||
|
|
T Ax1 = left();
|
||
|
|
T Ax2 = right();
|
||
|
|
T Ay1 = bottom();
|
||
|
|
T Ay2 = top();
|
||
|
|
T Bx1 = other.left();
|
||
|
|
T Bx2 = other.right();
|
||
|
|
T By1 = other.bottom();
|
||
|
|
T By2 = other.top();
|
||
|
|
if (Ax1 < Bx1) Ax1 = Bx1;
|
||
|
|
if (Ay1 < By1) Ay1 = By1;
|
||
|
|
if (Ax2 > Bx2) Ax2 = Bx2;
|
||
|
|
if (Ay2 > By2) Ay2 = By2;
|
||
|
|
return Rect(Ax1,Ay1,Ax2-Ax1+1,Ay2-Ay1+1);
|
||
|
|
}
|
||
|
|
|
||
|
|
Rect united(const Rect& other) const
|
||
|
|
{
|
||
|
|
if (other.isNull())
|
||
|
|
return *this;
|
||
|
|
if (isNull())
|
||
|
|
return other;
|
||
|
|
T Ax1 = left();
|
||
|
|
T Ax2 = right();
|
||
|
|
T Ay1 = bottom();
|
||
|
|
T Ay2 = top();
|
||
|
|
T Bx1 = other.left();
|
||
|
|
T Bx2 = other.right();
|
||
|
|
T By1 = other.bottom();
|
||
|
|
T By2 = other.top();
|
||
|
|
if (Ax1 > Bx1) Ax1 = Bx1;
|
||
|
|
if (Ay1 > By1) Ay1 = By1;
|
||
|
|
if (Ax2 < Bx2) Ax2 = Bx2;
|
||
|
|
if (Ay2 < By2) Ay2 = By2;
|
||
|
|
return Rect(Ax1,Ay1,Ax2-Ax1+1,Ay2-Ay1+1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Defines a sort of lexicographic sorting that make possible the use of the Rect class with STL containers like std::set, std::map etc.
|
||
|
|
*/
|
||
|
|
bool operator<(const Rect& other) const
|
||
|
|
{
|
||
|
|
if (mX != other.mX)
|
||
|
|
return mX < other.mX;
|
||
|
|
else
|
||
|
|
if (mWidth != other.mWidth)
|
||
|
|
return mWidth < other.mWidth;
|
||
|
|
else
|
||
|
|
if (mHeight != other.mHeight)
|
||
|
|
return mHeight < other.mHeight;
|
||
|
|
else
|
||
|
|
if (mY != other.mY)
|
||
|
|
return mY < other.mY;
|
||
|
|
else
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected:
|
||
|
|
T mX;
|
||
|
|
T mY;
|
||
|
|
T mWidth;
|
||
|
|
T mHeight;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The RectI class represents a 2D rectangular area using \p int precision.
|
||
|
|
* This class is mainly used to manipulate rectangles in pixel coordinates (as opposed to real coordinates).
|
||
|
|
* The RectI and RectF differ in the following way:
|
||
|
|
* - RectF dimensions are implemented using \a float precision, while RectI uses \a int precision.
|
||
|
|
* - RectF::right() returns x()+width(), while RectI::right() returns x()+width()-1
|
||
|
|
* - RectF::top() return y()+height(), while RectI::top() return y()+height()-1
|
||
|
|
* \sa
|
||
|
|
* - RectF
|
||
|
|
*/
|
||
|
|
class RectI: public Rect<int>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
RectI() {}
|
||
|
|
RectI(int x, int y, int width, int height) { mX=x; mY=y; mWidth=width; mHeight=height; }
|
||
|
|
RectI(const Rect<int>& other) { *this = other; }
|
||
|
|
RectI(const RectI& other): Rect<int>(other) { *this = other; }
|
||
|
|
// operator Rect<int>() const { return Rect<int>(x(), y(), width(), height()); }
|
||
|
|
RectI& operator=(const Rect<int>& other) { mX=other.x(); mY=other.y(); mWidth=other.width(); mHeight=other.height(); return *this; }
|
||
|
|
RectI& operator=(const RectI& other) { mX=other.x(); mY=other.y(); mWidth=other.width(); mHeight=other.height(); return *this; }
|
||
|
|
int top() const { return mY+mHeight-1; }
|
||
|
|
int right() const { return mX+mWidth-1; }
|
||
|
|
ivec2 bottomLeft() const { return ivec2(bottom(),left()); }
|
||
|
|
ivec2 topRight() const { return ivec2(top(),right()); }
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The RectF class represents a 2D rectangular area using \p float precision.
|
||
|
|
* This class is mainly used to manipulate rectangles in real coordinates (as opposed to pixel coordinates).
|
||
|
|
* The RectI and RectF differ in the following way:
|
||
|
|
* - RectF dimensions are implemented using \a float precision, while RectI uses \a int precision.
|
||
|
|
* - RectF::right() returns x()+width(), while RectI::right() returns x()+width()-1
|
||
|
|
* - RectF::top() return y()+height(), while RectI::top() return y()+height()-1
|
||
|
|
* \sa
|
||
|
|
* - RectI
|
||
|
|
*/
|
||
|
|
class RectF: public Rect<float>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
RectF() {}
|
||
|
|
RectF(float x, float y, float width, float height) { mX=x; mY=y; mWidth=width; mHeight=height; }
|
||
|
|
RectF(const RectF& other): Rect<float>(other) { *this = other; }
|
||
|
|
RectF(const Rect<float>& other) { *this = other; }
|
||
|
|
// operator Rect<float>() const { return Rect<float>(x(), y(), width(), height()); }
|
||
|
|
RectF& operator=(const Rect<float>& other) { mX=other.x(); mY=other.y(); mWidth=other.width(); mHeight=other.height(); return *this; }
|
||
|
|
RectF& operator=(const RectF& other) { mX=other.x(); mY=other.y(); mWidth=other.width(); mHeight=other.height(); return *this; }
|
||
|
|
float top() const { return mY+mHeight; }
|
||
|
|
float right() const { return mX+mWidth; }
|
||
|
|
fvec2 bottomLeft() const { return fvec2(bottom(),left()); }
|
||
|
|
fvec2 topRight() const { return fvec2(top(),right()); }
|
||
|
|
void addPoint(const fvec2& p)
|
||
|
|
{
|
||
|
|
fvec2 tr = topRight();
|
||
|
|
fvec2 bl = bottomLeft();
|
||
|
|
if (p.x() < bl.x())
|
||
|
|
bl.x() = p.x();
|
||
|
|
if (p.y() < bl.y())
|
||
|
|
bl.y() = p.y();
|
||
|
|
if (p.x() > tr.x())
|
||
|
|
tr.x() = p.x();
|
||
|
|
if (p.y() > tr.y())
|
||
|
|
tr.y() = p.y();
|
||
|
|
mX = bl.x();
|
||
|
|
mY = bl.y();
|
||
|
|
mWidth = tr.x() - bl.x();
|
||
|
|
mHeight = tr.y() - bl.y();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|