mirror of
https://github.com/worldforge/cyphesis
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The methods look odd, as pure virtual methods which override a pure virtual method in the base, but it is necessary so that if the method is called on this interface, the return type is correct.
161 lines
4.4 KiB
C++
161 lines
4.4 KiB
C++
// Cyphesis Online RPG Server and AI Engine
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// Copyright (C) 2011 Alistair Riddoch
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//
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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 General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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// $Id$
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#ifndef PHYSICS_SHAPE_H
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#define PHYSICS_SHAPE_H
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#include <wfmath/const.h>
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#include <map>
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#include <string>
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namespace Atlas {
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namespace Message {
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class Element;
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typedef std::map<std::string, Element> MapType;
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}
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}
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/// \brief Shape interface for inheritance based use of wfmath shapes
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class Shape {
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protected:
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Shape(const Shape &) = default;
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Shape & operator=(const Shape &) = default;
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Shape();
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public:
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virtual ~Shape() = 0;
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virtual size_t size() const = 0;
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virtual bool isValid() const = 0;
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virtual WFMath::CoordType area() const = 0;
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virtual WFMath::AxisBox<2> footprint() const = 0;
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virtual WFMath::Polygon<2> outline(WFMath::CoordType p = 1.f) const = 0;
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virtual void scale(WFMath::CoordType factor) = 0;
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virtual bool equal(const Shape & other) const = 0;
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virtual Shape * copy() const = 0;
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virtual void toAtlas(Atlas::Message::MapType &) const = 0;
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virtual int fromAtlas(const Atlas::Message::Element &) = 0;
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virtual void stream(std::ostream &) const = 0;
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/// \brief Name constructor
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static Shape * newFromAtlas(const Atlas::Message::MapType &);
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};
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template <int dim>
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class Form;
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template <>
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class Form<2> : public Shape {
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public:
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virtual WFMath::Point<2> getCorner(size_t) const = 0;
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virtual WFMath::Point<2> centre() const = 0;
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virtual WFMath::Point<2> lowCorner() const = 0;
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virtual WFMath::Point<2> highCorner() const = 0;
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virtual bool intersect(const WFMath::Point<2> &) const = 0;
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virtual Form<2> * copy() const = 0;
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};
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template <>
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class Form<3> : public Shape {
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public:
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virtual WFMath::Point<3> getCorner(size_t) const = 0;
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virtual WFMath::Point<3> centre() const = 0;
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virtual WFMath::Point<3> lowCorner() const = 0;
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virtual WFMath::Point<3> highCorner() const = 0;
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virtual bool intersect(const WFMath::Point<3> &) const = 0;
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virtual Form<2> * copy() const = 0;
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};
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typedef Form<2> Area;
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typedef Form<3> Body;
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template<template <int> class ShapeT, int dim = 2>
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class MathShape : public Form<dim> {
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protected:
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ShapeT<dim> m_shape;
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MathShape(const MathShape &) = default;
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MathShape & operator=(const MathShape &) = default;
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const char * getType() const;
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public:
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MathShape();
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MathShape(const ShapeT<dim> &);
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virtual size_t size() const;
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virtual bool isValid() const;
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virtual WFMath::Point<dim> getCorner(size_t) const;
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virtual WFMath::CoordType area() const;
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virtual WFMath::Point<dim> centre() const;
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virtual WFMath::AxisBox<2> footprint() const;
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virtual WFMath::Polygon<2> outline(WFMath::CoordType precision) const;
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virtual WFMath::Point<dim> lowCorner() const;
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virtual WFMath::Point<dim> highCorner() const;
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virtual bool intersect(const WFMath::Point<dim> &) const;
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virtual void scale(WFMath::CoordType factor);
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virtual bool equal(const Shape & other) const;
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virtual MathShape<ShapeT, dim> * copy() const;
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virtual void toAtlas(Atlas::Message::MapType &) const;
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virtual int fromAtlas(const Atlas::Message::Element &);
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virtual void stream(std::ostream &) const;
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const ShapeT<dim> & shape() { return m_shape; }
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};
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template<template <int> class ShapeT, int dim>
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inline MathShape<ShapeT, dim>::MathShape()
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{
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}
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template<template <int> class ShapeT, int dim>
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inline MathShape<ShapeT, dim>::MathShape(const ShapeT<dim> & s) : m_shape(s)
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{
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}
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inline bool operator==(const Shape & lhs, const Shape & rhs)
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{
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return lhs.equal(rhs);
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}
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inline bool operator!=(const Shape & lhs, const Shape & rhs)
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{
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return !lhs.equal(rhs);
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}
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inline std::ostream & operator<<(std::ostream& os, const Shape & s)
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{
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s.stream(os);
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return os;
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}
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#endif // PHYSICS_SHAPE_H
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