[vtkusers] Line intersection with an actor

[Doug Hoppes]

Thanks, David!  I couldn't get the vtkCellLocator to work but the vtkOBBTree worked beautifully.

From: David Gobbi [mailto:david.gobbi at gmail.com]
Sent: Thursday, March 19, 2015 11:22 AM
To: Doug Hoppes
Cc: vtkusers at vtk.org
Subject: Re: [vtkusers] Line intersection with an actor

The vtkCellLocator does this, but it operates on a vtkDataSet
rather than on an actor: actor->GetMapper()->GetInput()
The cell locator works in data coords rather than world coords
(use the actor's matrix to do the coord conversion, if needed).

On Thu, Mar 19, 2015 at 9:03 AM, Doug Hoppes <dhoppes at mbfbioscience.com<mailto:dhoppes at mbfbioscience.com>> wrote:
Hi all,

                I was wondering what the best way to do this.  I have a vtkactor in my scene.  In this case, I have a point(Point 1) inside of the vtkactor  and a point (Point 2) outside of the actor.  Is there a class that will get me the intersection position on the surface of the actor if I draw a line from point 1 to point 2?

Doug

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