0001418: Base::Matrix4d can't invert rotoinversion

ID	Project	Category	View Status	Date Submitted	Last Update

0001418	FreeCAD	Bug	public	2014-02-17 14:45	2014-02-17 16:10

Reporter	shoogen	Assigned To	wmayer
Priority	low	Severity	minor	Reproducibility	have not tried
Status	closed	Resolution	fixed
Product Version	trunk

Summary	0001418: Base::Matrix4d can't invert rotoinversion
Description	I'm not sure if i need to invert such a matrix. But those matrices are not singular. >>> FreeCAD.Matrix (0,-1,0,9,-1,0,0,9,0,0,1,0,0,0,0,1).inverse() Traceback (most recent call last): File "<input>", line 1, in <module> Exception: Cannot invert singular matrix >>> import numpy as np >>> np.linalg.matrix_rank(np.array(FreeCAD.Matrix (0,-1,0,9,-1,0,0,9,0,0,1,0,0,0,0,1).A).reshape(4,4)) 4
Steps To Reproduce	>>> FreeCAD.Matrix(-1).inverse()
Tags	No tags attached.

FreeCAD Information

Date Modified	Username	Field	Change
2014-02-17 14:45	shoogen	New Issue
2014-02-17 16:10	wmayer	Changeset attached	=> FreeCAD Master master efdbe465
2014-02-17 16:10	wmayer	Assigned To	=> wmayer
2014-02-17 16:10	wmayer	Status	new => closed
2014-02-17 16:10	wmayer	Resolution	open => fixed

FreeCAD: master efdbe465 2014-02-17 16:42:28 wmayer Details Diff	+ fixes 0001418: Base::Matrix4d can't invert rotoinversion		Affected Issues 0001418
	mod - src/Base/MatrixPyImp.cpp		Diff File