playrho::d2::EdgeShapeConf Class Reference

Edge shape configuration. More...

#include <EdgeShapeConf.hpp>

Inheritance diagram for playrho::d2::EdgeShapeConf:

Collaboration diagram for playrho::d2::EdgeShapeConf:

Public Member Functions
	EdgeShapeConf (Length2 vA, Length2 vB, const EdgeShapeConf &conf=GetDefaultConf()) noexcept
	Initializing constructor.
EdgeShapeConf &	Set (Length2 vA, Length2 vB) noexcept
	Sets both vertices in one call.
EdgeShapeConf &	UseVertexRadius (NonNegative< Length > value) noexcept
	Uses the given vertex radius.
EdgeShapeConf &	Transform (const Mat22 &m) noexcept
	Transforms both vertices by the given transformation matrix. More...
Length2	GetVertexA () const noexcept
	Gets vertex A.
Length2	GetVertexB () const noexcept
	Gets vertex B.
DistanceProxy	GetChild () const noexcept
	Gets the "child" shape.
Public Member Functions inherited from playrho::d2::ShapeBuilder< EdgeShapeConf >
constexpr	ShapeBuilder ()=default
	Default constructor.
constexpr	ShapeBuilder (const BaseShapeConf &value) noexcept
	Initializing constructor.
constexpr EdgeShapeConf &	UseFriction (NonNegative< Real > value) noexcept
	Uses the given friction.
constexpr EdgeShapeConf &	UseRestitution (Finite< Real > value) noexcept
	Uses the given restitution.
constexpr EdgeShapeConf &	UseDensity (NonNegative< AreaDensity > value) noexcept
	Uses the given density.

Static Public Member Functions
static constexpr NonNegative< Length >	GetDefaultVertexRadius () noexcept
	Gets the default vertex radius.
static EdgeShapeConf	GetDefaultConf () noexcept
	Gets the default configuration.

Public Attributes
NonNegative< Length >	vertexRadius = GetDefaultVertexRadius()
	Vertex radius. More...
Public Attributes inherited from playrho::d2::BaseShapeConf
NonNegative< Real >	friction = NonNegative<Real>{Real{2} / Real{10}}
	Friction coefficient. More...
Finite< Real >	restitution = Finite<Real>{0}
	Restitution (elasticity) of the associated shape. More...
NonNegative< AreaDensity >	density = NonNegative<AreaDensity>{0_kgpm2}
	Area density of the associated shape. More...

Private Attributes
Length2	m_vertices [2] = {Length2{}, Length2{}}
	Vertices.
UnitVec	m_normals [2] = {UnitVec{}, UnitVec{}}
	Normals.

Detailed Description

Edge shape configuration.

A line segment (edge) shape. These can be connected in chains or loops to other edge shapes. The connectivity information is used to ensure correct contact normals.

Note

This data structure is 56-bytes.

Examples

Shape.cpp, and World.cpp.

Member Function Documentation

Transform()

EdgeShapeConf & playrho::d2::EdgeShapeConf::Transform ( const Mat22 &  m )

noexcept

Transforms both vertices by the given transformation matrix.

See also

https://en.wikipedia.org/wiki/Transformation_matrix

Member Data Documentation

vertexRadius

NonNegative<Length> playrho::d2::EdgeShapeConf::vertexRadius = GetDefaultVertexRadius()

Vertex radius.

This is the radius from the vertex that the shape's "skin" should extend outward by. While any edges — line segments between multiple vertices — are straight, corners between them (the vertices) are rounded and treated as rounded. Shapes with larger vertex radiuses compared to edge lengths therefore will be more prone to rolling or having other shapes more prone to roll off of them.

Note

This should be a non-negative value.

Referenced by GetChild().

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

• EdgeShapeConf.hpp
• EdgeShapeConf.cpp