[vtkusers] vtk coneSource problem

[Xu Zhong Hao]

Hi,

I am trying to add a cone onto the medical3 skull image, however, the 
cone's setHeight and set radius cannot reduce to the correct size i 
want, so i tried the setScale function.

i tried to set the value setScale(0.001, 0.001,0.001), the cone will 
appear outside the render window although it is scaled to the correct 
size.

i tried to use vtkTransformPolyDataFilter, and feed in a transformation 
matrix (0.001,0,0,0,0,0.001,0,0,0,0,0.001,0,0,0,0,1). it will also 
appear outside the render window. scale it bigger at 0.003, it will 
appear inside the window but it is not the size i want.

Can anyone please help

Zhong hao