[vtkusers] Changing the direction of Z

[Bill Lorensen]

You can use the vtkTransformPolyDataFilter

On Sat, Oct 16, 2010 at 9:06 AM, Paul Harris <harris.pc at gmail.com> wrote:
> The models themselves.   Flipping the ViewUp seems to be the same as turning
> the monitor upside down, but that is not the result I want.
> The problem is that Z in model coordinates is "downwards", but vtk seems to
> insist that Z is "upwards".
> This problem is not just for Z either,
> I also have the situation where in some circumstances, the Y should point
> the other way.   ie, Y means South rather than North.
>
>
> On 16 October 2010 03:32, Bill Lorensen <bill.lorensen at gmail.com> wrote:
>>
>> Do you want the models flipped, or just the view of the models?
>>
>> If it is the latter, you can set the ViewUp of the camera to 0,0,-1.
>>
>>
>> On Fri, Oct 15, 2010 at 3:17 PM, Paul Harris <harris.pc at gmail.com> wrote:
>> > Hi all,
>> >
>> > I have a VTK scene with some vtkPolyDataMappers and actors, plus an
>> > orientation widget.
>> >
>> > I want to change the fundamental direction of the Z axis, so that it
>> > points
>> > down rather than up.  I want all of the models, the orientation widget,
>> > etc
>> > to flip, so that they point down instead of up.
>> >
>> > I've tried lots of things but have gotten nowhere...
>> >
>> > how do I make this happen?
>> >
>> > thanks
>> > Paul
>> >
>> >
>> >
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