dim m1

' Create 3x3 matrix.

set m1 = XSIMath.CreateMatrix3(2.0, 3.0, 0.0, 1.0, 4.0, 0.0, 0.0, 0.0, 1.0)

if m1.TransposeInverseInPlace then

'do something

else

'do another thing

end if

NewScene (null, false);

var oRoot = Application.ActiveProject.ActiveScene.Root

// Create two cubes, first is the original and second 

// is the one transpose inverse in place

var oCube = oRoot.AddGeometry("Cube","MeshSurface", "CubeParent")	

var oCube2 = oRoot.AddGeometry("Cube","MeshSurface", "CubeParent")	

var oTrans = oCube.Kinematics.Local.Transform

var oTrans2 = oCube2.Kinematics.Local.Transform

var oMat3 = XSIMath.CreateMatrix3()

oTrans2.GetRotationMatrix3 ( oMat3 );

// Modify the matrix to scale and rotate around z

oMat3.value(0,0) = 2 * Math.cos (45);

oMat3.value(0,1) = -2 * Math.sin (45);

oMat3.value(1,1) = 2 * Math.cos (45);

oMat3.value(1,0) = 2 * Math.sin (45);

oTrans.SetRotationFromMatrix3 ( oMat3 );	

oCube.Kinematics.Local.Transform = oTrans;

var vbArr = new VBArray( oMat3.Get2() );

var array = vbArr.toArray();

Application.LogMessage( "SIMatrix3 before transpose inverse" +

	" m00:" + array[0] + " m01:" + array[1] + " m02:" + array[2] + 

	" m10:" + array[3] + " m11:" + array[4] + " m12:" + array[5] + 

	" m20:" + array[6] + " m21:" + array[7] + " m22:" + array[8] );

oMat3.TransposeInverseInPlace()

oTrans2.SetRotationFromMatrix3 ( oMat3 );

var vbArr = new VBArray( oMat3.Get2() );

var array = vbArr.toArray();

Application.LogMessage( "SIMatrix3 after transpose inverse" +

	" m00:" + array[0] + " m01:" + array[1] + " m02:" + array[2] + 

	" m10:" + array[3] + " m11:" + array[4] + " m12:" + array[5] + 

	" m20:" + array[6] + " m21:" + array[7] + " m22:" + array[8] );

oCube2.Kinematics.Local.Transform = oTrans2;

// Expected results:

//INFO : SIMatrix3 before transpose inverse 

//		m00:1.0506439776354594  m01:-1.7018070490682368 m02:0 

//		m10:1.7018070490682368  m11:1.0506439776354594  m12:0 

//		m20:0                   m21:0                   m22:1

//INFO : SIMatrix3 after transpose inverse 

//		m00:0.26266099440886486 m01:-0.4254517622670592 m02:0 

//		m10:0.4254517622670592  m11:0.26266099440886486 m12:0 

//		m20:0                   m21:0                   m22:1