Mesh

#Mesh abstract class

extends N/A

implements N/A

Introduction

Mesh is a component which is used to describe the physical boundary of a physics entity which is a complex shape. A mesh is described as a list of nodes and the edges used to connect them. A mesh must be built in a clockwise or counter-clockwise order in order to ensure proper calculation of area as well as collision detection.

Fields

Accessibility	Type	Field Name	Description
private	List	nodes	Nodes(vertices) making up the mesh. Must be in clockwise/counter-clockwise order
private	List	edges	Used to describe the connection between two nodes. May be used to abstract some physics functions.

Methods

Accessibility	Return Type	Method Name	Description
public	boolean	collidesWithPoint	determine if a node is within the edge
public	void	containsPoint	determines if a node or a node with a position exists in this mesh
public	Vector2f	calculateCentroid	returns the centroid of the mesh
public	float	getArea	returns area of the mesh
public	float	getPerimeter	returns the perimeter of the mesh

Physics/ Mathematics

Shoelace theorem for area calculation

Example in progress. See this link for an explanation of shoelace formula.

Collision detection

Example in progress, see link for an explanation of collision detection algorithm.