The 3×3 Matrix features the same methods of accessing its variables as the 2x2 Matrix; but of course, has an extra column and row.

In addition to the base identity and custom matrix constructors, the 3×3 matrix also has constructors for:

• A 3×3 rotation matrix constructed by means of a rotation vector and the angle in degrees.
• A 3×3 rotation matrix constructed with pitch, yaw and roll in degrees.

The 3×3 Matrix also features additional functions in its class. Here is the complete list:

• Transpose
• Determinant
• Inverse
• Adjugate
• RotateX, RotateY and RotateZ, all of which rotate the matrix by the given angle around their respective axis as the name dictates.
• RotateAxis, which rotates this matrix for the given angle around the given axis.
• Rotate, which takes pitch, yaw, and roll in degrees.

As part of the ImpulsePhysics::Matrices namespace, you also get access to these utility functions:

• Cut3x3, which 'cuts' a matrix out of a 4x4 matrix
• Minor
• Cofactor