A 3-by-3 matrix. Stored in column-major order. More...

#include <b2_math.h>

Public Member Functions
	b2Mat33 ()
	The default constructor does nothing (for performance).

	b2Mat33 (const b2Vec3 &c1, const b2Vec3 &c2, const b2Vec3 &c3)
	Construct this matrix using columns.

void	SetZero ()
	Set this matrix to all zeros.

b2Vec3	Solve33 (const b2Vec3 &b) const

b2Vec2	Solve22 (const b2Vec2 &b) const

void	GetInverse22 (b2Mat33 *M) const

void	GetSymInverse33 (b2Mat33 *M) const

Public Attributes
b2Vec3	ex

b2Vec3	ey

b2Vec3	ez

Detailed Description

A 3-by-3 matrix. Stored in column-major order.

Member Function Documentation

◆ GetInverse22()

void b2Mat33::GetInverse22 ( b2Mat33 * M ) const

Get the inverse of this matrix as a 2-by-2. Returns the zero matrix if singular.

◆ GetSymInverse33()

void b2Mat33::GetSymInverse33 ( b2Mat33 * M ) const

Get the symmetric inverse of this matrix as a 3-by-3. Returns the zero matrix if singular.

◆ Solve22()

b2Vec2 b2Mat33::Solve22 ( const b2Vec2 & b ) const

Solve A * x = b, where b is a column vector. This is more efficient than computing the inverse in one-shot cases. Solve only the upper 2-by-2 matrix equation.

◆ Solve33()

b2Vec3 b2Mat33::Solve33 ( const b2Vec3 & b ) const

Solve A * x = b, where b is a column vector. This is more efficient than computing the inverse in one-shot cases.

The documentation for this struct was generated from the following file:

D:/GitHub/box2d/include/box2d/b2_math.h