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TransposeInverseInPlace (SIMatrix4)

Description

Sets this matrix to the transpose of the inverse of itself (if not singular): this = Transpose(this^-1)

C# Syntax

Int32 SIMatrix4.TransposeInverseInPlace();

Return Value

Boolean True if the matrix m has been inverted (not singular); otherwise False.

Examples

1. VBScript Example

'
' This example demonstrates how to transpose and invert 
' a 4x4 matrix, store the result of the operation in 
' the first matrix, and then trap whether the invert
' and transpose operation was successful.
'
dim m1 : set m1 = XSIMath.CreateMatrix4(_
   2.0, 3.0, 0.0, 0.0, _
   1.0, 4.0, 0.0, 0.0, _
   0.0, 0.0, 1.0, 0.0, _
   0.0, 0.0, 0.0, 1.0)

if m1.TransposeInverseInPlace then
   Application.LogMessage "Success :-D"
else
   Application.LogMessage "Failure :-("
end if


' Expected result:
' INFO : Success :-D

2. JScript Example

/*
   Create two cubes, the first one uses Matrix4.Set function and 
   the second uses the transpose inverse matrix of the first
*/
NewScene(null, false);
var oRoot = Application.ActiveProject.ActiveScene.Root;
var oCube = oRoot.AddGeometry("Cube", "MeshSurface", "CubeOriginal");
   var oCube2 = oRoot.AddGeometry("Cube", "MeshSurface", "CubeTransposed");
   
var oTrans = oCube.Kinematics.Local.Transform;
var oTrans2 = oCube2.Kinematics.Local.Transform;

// Change the cube shape
   var oMat4 = XSIMath.CreateMatrix4( 
   1.0, 1.0, 0.0, 10.0, 
   0.0, 1.0, 0.0, 0.0, 
   0.0, 0.0, 1.0, 0.0, 
   0.0, 0.0, 0.0, 1.0 
);

// Original cube
oTrans.SetMatrix4(oMat4);
oCube.Kinematics.Local.Transform = oTrans;

// Transpose inverse cube
oMat4.TransposeInverseInPlace();
oTrans2.SetMatrix4(oMat4);
oCube2.Kinematics.Local.Transform = oTrans2;

See Also

Autodesk Softimage v7.5     <     >