MantisBT - VTK
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ID	Project	Category	View Status	Date Submitted	Last Update
0000626	VTK	(No Category)	public	2004-02-25 09:06	2016-08-12 09:54

Reporter	vdhel
Assigned To	Kitware Robot
Priority	normal	Severity	major	Reproducibility	always
Status	closed	Resolution	moved
Platform		OS		OS Version
Product Version
Target Version		Fixed in Version
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Type

Summary	0000626: Aspect zooming doesn't work
Description	Using vtkViewport::SetPixelAspect doens't work anymore. It used to work with version 4.0. I think the problem is in vtkOpenGLCamera::Render. In version 1.48 of vtkOpenGLCamere.cxx, L116, reads: matrix->DeepCopy(this->GetPerspectiveTransformMatrix(aspect[0]/aspect[1], This line is changed in version 1.49 () to read: matrix->DeepCopy(this->GetPerspectiveTransformMatrix(1.0usize/vsize, In the latest version (1.61 L165/166) the line reads: matrix->DeepCopy(this->GetPerspectiveTransformMatrix(aspectModificationusize/vsize, -1,1)); When I change the first parameter of GetPerspectiveTransformMatrix to: aspectModification*aspect[0]/aspect[1] the aspect zooming seems to work again. Although I don't understand why it was changed to use usize/vsize, it seems odd to me that the aspect is not taking into account when the renderer and viewport report the same aspect ratio (which is the case in my case)
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Attached Files	aniso.py (471) 1969-12-31 19:00 https://www.vtk.org/Bug/file/5106/aniso.py

Issue History
Date Modified	Username	Field	Change
2008-02-06 10:20	Jeff Baumes	Assigned To	=> François Bertel
2010-09-07 13:47	François Bertel	Assigned To	François Bertel =>
2011-06-16 13:11	Zack Galbreath	Category	=> (No Category)
2016-08-12 09:54	Kitware Robot	Note Added: 0036718
2016-08-12 09:54	Kitware Robot	Status	expired => closed
2016-08-12 09:54	Kitware Robot	Resolution	open => moved
2016-08-12 09:54	Kitware Robot	Assigned To	=> Kitware Robot

Notes