[vtkusers] scaling vtkpolydata to the extents of a vtkimagedata set ?
afyfe at soe.ucsc.edu
Wed Jul 4 15:17:37 EDT 2007
I'm a new vtk user with two questions.
(1) I would to like to overlay a volumetric rendering of an imagedata
set (electron density) with polydata-derived actors that display
characteristics of the data (molecular model and meshes). Overall, this
seems to work but the polydata-derived actors are not displayed at the
expected location. Whereas a STRUCTURED_POINTS dataset specifies the
extent/spacing/origin of the grid a POLYDATA dataset does not. Is there
a way of ensuring two such data sets share the same coordinate system
(that is a particular x,yz, coordinate refers to the same location)?
(2) I assume this is a fairly straightforward question but could find no
answer in the User's Guide or the mailing-list archives- are there other
good resources to check?
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