Polygon2d Class Reference

Represents a polygon. Usually used for collisions masks. More...

#include <Polygon2d.h>

Public Member Functions
std::vector< gd::Vector2f > &	GetVertices ()
	Get the vertices composing the polygon.
const std::vector< gd::Vector2f > &	GetVertices () const
	Get the vertices composing the polygon.
void	Move (double x, double y)
	Moves each vertices from the given amount. More...
void	Rotate (double angle)
	Rotate the polygon. More...
void	ComputeEdges () const
	Automatically fill edges vector using vertices.
bool	IsConvex () const
	Check if the polygon is convex. More...
gd::Vector2f	ComputeCenter () const
	Return the position of the center of the polygon.

Static Public Member Functions
Tools
Tool functions
static Polygon2d	CreateRectangle (double width, double height)
	Create a rectangle.

Public Attributes
std::vector< gd::Vector2f >	vertices
	The vertices composing the polygon.
std::vector< gd::Vector2f >	edges
	Edges. Can be computed from vertices using ComputeEdges()

Detailed Description

Represents a polygon. Usually used for collisions masks.

This class stores the vertices of the polygon. It can also compute and store the edges ( needed by some collisions algorithms ) if ComputeEdges is called.

Member Function Documentation

IsConvex()

bool Polygon2d::IsConvex

(

)

const

Check if the polygon is convex.

Returns

true if the polygon is convex

Move()

void Polygon2d::Move	(	double	x,
		double	y
	)

Moves each vertices from the given amount.

Note

Edges are updated, there is no need to call ComputeEdges after calling Move.

Rotate()

void Polygon2d::Rotate

(

double

angle

)

Rotate the polygon.

Parameters

angle

Angle in radians

Warning

Rotation is made clockwise

edges vector is not updated, you have to call ComputeEdges if needed.

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The documentation for this class was generated from the following files:

• Polygon2d.h
• Polygon2d.cpp