Class Polygon

Definition

Namespace:
Tizen.NUI.Physics2D.Chipmunk
Assembly:
Tizen.NUI.Physics2D.dll

A polygon shape composed of connected vertices.

public class Polygon : Shape
Inheritance
object
Shape
Polygon

Constructors

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Polygon(Body, IReadOnlyList<Vect>, Transform, double)

A convex polygon shape. It's the slowest, but most flexible collision shape.

Declaration
public Polygon(Body body, IReadOnlyList<Vect> verts, Transform transform, double radius)
Parameters
Type Name Description
Body body
IReadOnlyList<><Vect> verts
Transform transform
double radius
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Polygon(Body, Vect[], double)

Allocate and initialize a polygon shape with rounded corners. The vertexes must be convex with a counter-clockwise winding.

Declaration
public Polygon(Body body, Vect[] verts, double radius)
Parameters
Type Name Description
Body body
Vect[] verts
double radius

Properties

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Area

Get and calculate the signed area of this polygon. Vertices specified such that they connect in a clockwise fashion (called winding) give a positive area measurement. This is probably backwards to what you might expect.

Declaration
public double Area { get; }
Property Value
Type Description
double
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Centroid

Get and calculate the centroid of the polygon.

Declaration
public Vect Centroid { get; }
Property Value
Type Description
Vect
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Count

Get the number of vertices in a polygon shape.

Declaration
public int Count { get; }
Property Value
Type Description
int
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Radius

Get the radius of the polygon.

Declaration
public double Radius { get; }
Property Value
Type Description
double
View Source

Vertices

Get the vertices of the polygon.

Declaration
public IReadOnlyList<Vect> Vertices { get; }
Property Value
Type Description
IReadOnlyList<><Vect>

Methods

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AreaForPoly(IReadOnlyList<Vect>, double)

Calculate the signed area of this polygon. Vertices specified such that they connect in a clockwise fashion (called winding) give a positive area measurement. This is probably backwards to what you might expect.

Declaration
public static double AreaForPoly(IReadOnlyList<Vect> vertices, double radius)
Parameters
Type Name Description
IReadOnlyList<><Vect> vertices
double radius
Returns
Type Description
double
View Source

CentroidForPoly(IReadOnlyList<Vect>)

Calculate the natural centroid of a polygon.

Declaration
public static Vect CentroidForPoly(IReadOnlyList<Vect> vertices)
Parameters
Type Name Description
IReadOnlyList<><Vect> vertices
Returns
Type Description
Vect
View Source

GetVertex(int)

Get the ith vertex of a polygon shape.

Declaration
public Vect GetVertex(int i)
Parameters
Type Name Description
int i
Returns
Type Description
Vect
View Source

MomentForPolygon(double, IReadOnlyList<Vect>, Vect, double)

Calculate the moment of inertia for a solid polygon shape assuming its center of gravity is at its centroid. The offset is added to each vertex.

Declaration
public static double MomentForPolygon(double mass, IReadOnlyList<Vect> vertices, Vect offset, double radius)
Parameters
Type Name Description
double mass
IReadOnlyList<><Vect> vertices
Vect offset
double radius
Returns
Type Description
double

Extension Methods