[vtk-developers] [VTK 0013218]: vtkTextActor will render very tiny wrong block if empty string/space is set as the input

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://vtk.org/Bug/view.php?id=13218 
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Reported By:                dennisHu
Assigned To:                
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Project:                    VTK
Issue ID:                   13218
Category:                   (No Category)
Reproducibility:            have not tried
Severity:                   minor
Priority:                   normal
Status:                     backlog
Project:                    TBD 
Type:                       incorrect functionality 
Resolution:                 open
Fixed in Version:           
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Date Submitted:             2012-06-03 02:28 EDT
Last Modified:              2012-06-03 02:28 EDT
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Summary:                    vtkTextActor will render very tiny wrong block if
empty string/space is set as the input
Description: 
Detected this issue in VTK 5.10, i guess it is old issue related to
http://vtk.org/Bug/view.php?id=10905
When empty string("")/space(" ") is set as vtkTextActor Input, got some error
report as "No scalar values found for texture input!" from vtkOpenGLTexture.
I discovered there is some tiny block rendered on the screen.

I think the simple fix is not render vtkTextActor if Texture input data is
empty(0).
Maybe better approach is correct some image data in vtkFreeTypeUtilities.

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Issue History 
Date Modified    Username       Field                    Change               
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2012-06-03 02:28 dennisHu       New Issue                                    
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