A 2-by-2 matrix. Stored in column-major order. More...

#include <b2_math.h>

Public Member Functions
	b2Mat22 ()
	The default constructor does nothing (for performance).

	b2Mat22 (const b2Vec2 &c1, const b2Vec2 &c2)
	Construct this matrix using columns.

	b2Mat22 (float a11, float a12, float a21, float a22)
	Construct this matrix using scalars.

void	Set (const b2Vec2 &c1, const b2Vec2 &c2)
	Initialize this matrix using columns.

void	SetIdentity ()
	Set this to the identity matrix.

void	SetZero ()
	Set this matrix to all zeros.

b2Mat22	GetInverse () const

b2Vec2	Solve (const b2Vec2 &b) const

Detailed Description

A 2-by-2 matrix. Stored in column-major order.

Member Function Documentation

b2Vec2 b2Mat22::Solve ( const b2Vec2 & b ) const

inline

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: