[vtkusers] Scaling glyphs[Scanned]

[John Platt]

Hi Jim,

 

Have you tried ClampingOn() with ScalingOn(). Data scales outside the
clamp range are reset to the range end points. The data scale is then
normalized to the range 0 - 1. All glyphs with a data scale less than
the lower clamp range are therefore mapped to zero. Provided data
scaling is on (SetScaleModeToDataScalingOn()), the composite scale
factor, DataScale*ScaleFactor will also be zero.

 

HTH

 

John.

 

-----Original Message-----
From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On
Behalf Of James C Robinson
Sent: 20 April 2005 13:46
To: Administrator
Cc: jcplatt at lineone.net
Subject: [vtkusers] Scaling glyphs[Scanned]

 

Dear all,

 

I am producing a set of glyphs using a vtkPlaneSource as the data
points. It works perfectly -  when I have scaling on, the glyphs behave
appropriately. However, when I turn scaling off (whowing vector
direction only) there are glyphs placed even at points (on the
vtkPlaneSource) that are outside the body (therefore magnitude is
implicitly zero).

 

I can Could anybody tell me if it is possible to have the glyphs
eliminated at points that are outside the field (or where the magnitude
is zero - or less than some threshold)?

 

Regards,

 

Jim

 

James C Robinson, 

*    42 Rivergrove,

         Glanmire,

         Co. Cork,

         Eire

'     +353 21 4822028

         +353 87 2393010

*    jrobinson at eircom.net> 

 

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