GLSLProgram C++ Class - Graphics Shaders - page 471

RI.Invert( );
RI.Print( “Rinverse = “ );
RI *= R;
RI.Print( “Rinverse * R = “ );
Matrix4 Comp;
Comp.LoadIdentity( ).Translatef(-A,-B,-C).Scalef(3.,4.,1.).
Translatef(A,B,C).Print(“Composite = “);
Comp.Invert( ).Print( “Composite Inverse = “ );
fprintf( stderr, “Determinant of Composite Inverse = %8.3f\n”,
Comp.GetDeterminant( ) );