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0003654

VTK

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public

2006-08-23 07:08

2011-04-15 19:27

Reporter

David Gobbi

Assigned To

Karthik Krishnan

Priority

urgent

Severity

major

Reproducibility

always

Status

closed

Resolution

no change required

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OS Version

Product Version

Target Version

Fixed in Version

Summary

0003654: The vtkImageActor fails if inputs WholeExtent changes

Description

The image actor sets its DisplayExtent the first time it runs, but if the WholeExtent of the input ever changes afterwards in such a way the DisplayExtent is no longer within the WholeExtent, there is an error:

ERROR: In \vtk\source\Filtering\vtkStreamingDemandDrivenPipeline.cxx, line 628
vtkStreamingDemandDrivenPipeline (026B50E8): The update extent
specified in the information for output port 0 on algorithm
vtkImageReslice(026B4028) is 182 182 0 359 0 177, which is outside the
whole extent 0 363 0 359 0 0.

The vtkImageActor should not set its DisplayExtent ivar itself, it should have a protected ivar that it sets and uses instead. The DisplayExtent ivar should only get set by the SetDisplayExtent() method.

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Notes
(0004721) Brad King (developer) 2006-08-23 11:20	The bug appears to be in vtkImageActor::RenderOpaqueGeometry. I'm assigning this to Ken because he appears to have written the offending code.

(0004751) David Gobbi (developer) 2006-08-25 11:02	I have added a ComputedDisplayExtent ivar, which partially fixes this bug. With this change, if SetDisplayExtent() is not called to force a particular display extent, the ImageActor will automatically adjust itself according to the WholeExtent of its input. I call the fix a "partial" fix since, if SetDisplayExtent() is used to set an extent that is incompatible with the WholeExtent(), an error still occurs. Changed files: vtkImageActor.h(1.22), vtkImageActor.cxx(1.21), vtkOpenGLImageActor(1.33)

(0026193) David Gobbi (developer) 2011-04-15 19:27	The vtkImageActor class has been rewritten, this bug report is no longer relevant.

Issue History
Date Modified	Username	Field	Change
2008-02-06 10:10	Jeff Baumes	Assigned To	=> Karthik Krishnan
2011-04-15 19:27	David Gobbi	Note Added: 0026193
2011-04-15 19:27	David Gobbi	Status	tabled => closed
2011-04-15 19:27	David Gobbi	Resolution	open => no change required
2011-06-16 13:11	Zack Galbreath	Category	=> (No Category)