mirror of
https://github.com/love2d/love.git
synced 2026-08-15 15:51:12 +02:00
Alex Szpakowski
113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
/**
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* Copyright (c) 2006-2019 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#ifndef LOVE_PHYSICS_BOX2D_CHAIN_SHAPE_H
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#define LOVE_PHYSICS_BOX2D_CHAIN_SHAPE_H
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// Module
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#include "Shape.h"
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#include "EdgeShape.h"
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namespace love
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{
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namespace physics
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{
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namespace box2d
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{
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/**
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* A ChainShape is a freeform collection of line segments.
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**/
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class ChainShape : public Shape
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{
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public:
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static love::Type type;
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/**
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* Create a new ChainShape from a Box2D chain shape.
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* @param c The chain shape.
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**/
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ChainShape(b2ChainShape *c, bool own = true);
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virtual ~ChainShape();
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/**
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* Establish connectivity to a vertex that follows
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* the last vertex. Fails if called on a loop.
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* @param x The x-coordinate of the vertex.
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* @param y The y-coordinate of the vertex.
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**/
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void setNextVertex(float x, float y);
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void setNextVertex();
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/**
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* Establish connectivity to a vertex that precedes
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* the first vertex. Fails if called on a loop.
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* @param x The x-coordinate of the vertex.
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* @param y The y-coordinate of the vertex.
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**/
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void setPreviousVertex(float x, float y);
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void setPreviousVertex();
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/**
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* Gets the vertex that follows the last vertex.
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**/
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bool getNextVertex(float &x, float &y) const;
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/**
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* Gets the vertex that precedes the first vertex.
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**/
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bool getPreviousVertex(float &x, float &y) const;
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/**
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* Returns a child EdgeShape.
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* @param index The index of the child shape.
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* @returns The specified child.
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**/
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EdgeShape *getChildEdge(int index) const;
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/**
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* Returns the number of vertices in the shape.
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* @returns The number of vertices in the shape.
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**/
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int getVertexCount() const;
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/**
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* Returns the vertex at the given index.
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* @param index The index of the vertex.
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* @returns The specified vertex.
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**/
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b2Vec2 getPoint(int index) const;
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/**
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* Returns all of the vertices.
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* @returns The vertices the shape comprises.
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**/
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const b2Vec2 *getPoints() const;
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};
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} // box2d
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} // physics
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} // love
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#endif // LOVE_PHYSICS_BOX2D_CHAIN_SHAPE_H
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