357 lines
8.2 KiB
C++
357 lines
8.2 KiB
C++
//! \file pirect.h
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//! \ingroup Math
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//! \brief
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//! \~english Rect class
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//! \~russian Класс прямоугольника
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/*
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PIP - Platform Independent Primitives
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Rect class
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Ivan Pelipenko peri4ko@yandex.ru, Andrey Bychkov work.a.b@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PIRECT_H
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#define PIRECT_H
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#include "pipoint.h"
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//! \brief
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//! \~english Rect class
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//! \~russian Класс прямоугольника
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//! \~\details
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//! \~russian
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//! Этот класс описывает прямоугольник на плоскости в прямоугольной системе координат
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template<typename Type>
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class PIP_EXPORT PIRect {
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static_assert(std::is_arithmetic<Type>::value, "Type must be arithmetic");
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public:
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//!
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PIRect() {}
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//! \brief
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//! \~russian Конструктор прямоугольника из координат левого нижнего угла и размеров ширины и высоты
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PIRect(Type left_, Type bottom_, Type width_, Type height_) {
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set(left_, bottom_, width_, height_);
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normalize();
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}
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//! \brief
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//! \~russian Конструктор прямоугольника из координат левого нижнего угла и правого верхнего угла
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PIRect(const PIPoint<Type> & bottom_left, const PIPoint<Type> & top_right) {
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bl = bottom_left;
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tr = top_right;
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normalize();
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}
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// PIRect(const PIPoint<Type> & p0, const PIPoint<Type> & p1, const PIPoint<Type> & p2) {
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// set(piMin<Type>(p0.x, p1.x, p2.x), piMin<Type>(p0.y, p1.y, p2.y),
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// piMax<Type>(p0.x, p1.x, p2.x), piMax<Type>(p0.y, p1.y, p2.y));
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// }
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//!
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PIRect<Type> & set(Type left_, Type bottom_, Type width_, Type height_) {
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bl = PIPoint<Type>(left_, bottom_);
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tr = PIPoint<Type>(left_ + width_, bottom_ + height_);
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return normalize();
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}
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//!
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PIRect<Type> & set(const PIPoint<Type> & top_left, const PIPoint<Type> & bottom_right) {
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bl = top_left;
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tr = bottom_right;
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return normalize();
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}
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//! \brief
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//! \~russian Возвращает true если точка с указанными координатами принадлежит прямоугольнику
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bool pointIn(Type x, Type y) const {
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return (x <= bl.x && x >= tr.x && y <= bl.y && y >= tr.y);
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}
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//! \brief
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//! \~russian Возвращает true если точка с указанными координатами принадлежит прямоугольнику
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bool pointIn(const PIPoint<Type> & p) const {
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return pointIn(p.x, p.y);
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}
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//!
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bool isEmpty() const {
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return (width() == 0 && height() == 0);
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}
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//!
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PIRect<Type> & translate(Type x, Type y) {
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bl.translate(x, y);
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tr.translate(x, y);
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return *this;
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}
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//!
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PIRect<Type> & translate(const PIPoint<Type> & p) {
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bl.translate(p);
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tr.translate(p);
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return *this;
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}
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//!
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PIRect<Type> translated(Type x, Type y) const {
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PIRect<Type> r(*this);
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r.translate(x, y);
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return r;
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}
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//!
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PIRect<Type> translated(const PIPoint<Type> & p) const {
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PIRect<Type> r(*this);
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r.translate(p);
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return r;
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}
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//!
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PIRect<Type> & move(Type x, Type y) {return translate(x, y);}
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//!
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PIRect<Type> & move(const PIPoint<Type> & p) {return translate(p);}
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//!
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PIRect<Type> moved(Type x, Type y) const {
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PIRect<Type> r(*this);
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r.translate(x, y);
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return r;
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}
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//!
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PIRect<Type> moved(const PIPoint<Type> & p) const {
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PIRect<Type> r(*this);
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r.translate(p);
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return r;
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}
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//!
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PIRect<Type> & scale(Type x, Type y) {
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setWidth(width() * x);
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setHeight(height() * y);
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return normalize();
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}
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//!
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PIRect<Type> & scale(Type s) {return scale(s, s);}
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//!
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PIRect<Type> & scale(const PIPoint<Type> & p) {return scale(p.x, p.y);}
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//!
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PIRect<Type> scaled(Type x, Type y) const {
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PIRect<Type> r(*this);
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r.scale(x, y);
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return r;
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}
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//!
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PIRect<Type> scaled(Type s) const {
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PIRect<Type> r(*this);
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r.scale(s);
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return r;
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}
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//!
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PIRect<Type> scaled(const PIPoint<Type> & p) const {
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PIRect<Type> r(*this);
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r.scale(p);
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return r;
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}
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//!
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PIRect<Type> & normalize() {
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if (bl.x > tr.x) piSwap<Type>(bl.x, tr.x);
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if (bl.y > tr.y) piSwap<Type>(bl.y, tr.y);
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return *this;
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}
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//!
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PIRect<Type> normalized() const {
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PIRect<Type> r(*this);
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r.normalize();
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return r;
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}
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//!
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PIRect<Type> & unite(const PIRect<Type> & r) {
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bl.x = piMax<Type>(bl.x, r.left());
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bl.y = piMax<Type>(bl.y, r.bottom());
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tr.x = piMin<Type>(tr.x, r.right());
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tr.y = piMin<Type>(tr.y, r.top());
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return normalize();
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}
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//!
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PIRect<Type> united(const PIRect<Type> & rect) const {
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PIRect<Type> r(*this);
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r.unite(rect);
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return r;
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}
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//!
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PIRect<Type> & intersect(const PIRect<Type> & r) {
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bl.x = piMax<Type>(bl.x, r.left());
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bl.y = piMax<Type>(bl.y, r.bottom());
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tr.x = piMin<Type>(tr.x, r.right());
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tr.y = piMin<Type>(tr.y, r.top());
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if (bl.x > tr.x || bl.y > tr.y) bl = tr = PIPoint<Type>();
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return *this;
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}
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//!
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PIRect<Type> intersected(const PIRect<Type> & rect) const {
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PIRect<Type> r(*this);
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r.intersect(rect);
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return r;
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}
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//!
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Type top() const {return tr.y;}
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//!
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Type left() const {return bl.x;}
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//!
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Type right() const {return tr.x;}
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//!
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Type bottom() const {return bl.y;}
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//!
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Type width() const {return tr.x - bl.x;}
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//!
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Type height() const {return tr.y - bl.y;}
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//!
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PIPoint<Type> topLeft() const {return PIPoint<Type>(bl.x, tr.y);}
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//!
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PIPoint<Type> topRigth() const {return tr;}
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//!
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PIPoint<Type> bottomLeft() const {return bl;}
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//!
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PIPoint<Type> bottomRight() const {return PIPoint<Type>(tr.x, bl.y);}
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//!
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PIPoint<Type> center() const {return bl.moved(width()/2, height()/2);}
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//!
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void setTop(Type v) {tr.y = v; normalize();}
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//!
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void setLeft(Type v) {bl.x = v; normalize();}
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//!
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void setRigth(Type v) {tr.x = v; normalize();}
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//!
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void setBottom(Type v) {bl.y = v; normalize();}
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//!
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void setWidth(Type v) {setTop(bl.x + v);}
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//!
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void setHeight(Type v) {setRigth(bl.y + v);}
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//!
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void setTopLeft(const PIPoint<Type> & p) {setLeft(p.x); setTop(p.y);}
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//!
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void setBottomRight(const PIPoint<Type> & p) {setRigth(p.x); setBottom(p.y);}
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//!
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void setBottomLeft(const PIPoint<Type> & p) {bl = p; normalize();}
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//!
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void setTopRigth(const PIPoint<Type> & p) {tr = p; normalize();}
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//!
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void setCenter(const PIPoint<Type> & p) {
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Type w = width();
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Type h = height();
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bl = p.translated(-w/2, -h/2);
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tr = PIPoint<Type>(bl.x + w, bl.y + h);
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}
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//!
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void setSize(Type w, Type h) {
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tr = PIPoint<Type>(bl.x + w, bl.y + h);
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normalize();
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}
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//!
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void operator +=(Type x) {translate(x, x);}
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//!
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void operator +=(const PIPoint<Type> & p) {translate(p);}
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//!
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void operator -=(Type x) {translate(-x, -x);}
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//!
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void operator -=(const PIPoint<Type> & p) {translate(-p);}
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//!
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void operator |=(const PIRect<Type> & r) {unite(r);}
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//!
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void operator &=(const PIRect<Type> & r) {intersect(r);}
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//!
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PIRect<Type> operator +(const PIPoint<Type> & p) {return translated(p);}
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//!
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PIRect<Type> operator -(const PIPoint<Type> & p) {return translated(-p);}
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//!
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PIRect<Type> operator |(const PIRect<Type> & r) {return united(r);}
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//!
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PIRect<Type> operator &(const PIRect<Type> & r) {return intersected(r);}
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//!
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bool operator ==(const PIRect<Type> & r) const {return (bl == r.bl && tr == r.tr);}
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//!
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bool operator !=(const PIRect<Type> & r) const {return (bl != r.bl || tr != r.tr);}
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private:
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PIPoint<Type> bl;
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PIPoint<Type> tr;
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};
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template<typename Type>
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PICout operator <<(PICout & s, const PIRect<Type> & v) {
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s.saveAndSetControls(0);
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s << "Rect{" << v.bottomLeft() << ":" << v.width() << "x" << v.height() << "}";
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s.restoreControls();
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return s;
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}
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typedef PIRect<int> PIRecti;
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typedef PIRect<uint> PIRectu;
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typedef PIRect<float> PIRectf;
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typedef PIRect<double> PIRectd;
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#endif // PIRECT_H
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