[vtkusers] Selected cells not visible
alexmalvtk at gmail.com
Wed Feb 13 19:17:58 EST 2013
I printed information on selection modifying example:
vtkIdType numNodes = selection->GetNumberOfNodes();
for(int iNode=0; iNode < numNodes; iNode++)
std::cout << "Node: " << iNode << endl;
vtkIdType listSize =
for(int iVal=0; iVal < listSize; iVal++)
std::cout << "\t" << iVal << "\t" <<
And even though example does not change the color it looks like it
does pick up the correct (visible only) cells .
So check that you do not have anti-aliasing set otherwise you might
get cells which are not visible partially visible.
On Wed, Feb 13, 2013 at 3:38 PM, Alex Malyushytskyy
<alexmalvtk at gmail.com> wrote:
> It looks like I was mistaken and it prints number of vtkSelectionNode
> s which may be a valid number in this case,
> but as I understand example was supposed to color selection (assign
> red color ) and I do not see this happen.
> On Wed, Feb 13, 2013 at 3:21 PM, Alex Malyushytskyy
> <alexmalvtk at gmail.com> wrote:
>> I phrased it incorrectly.
>> Selection ( visible triangles ) should have at least 3 nodes and in
>> reality more , depending on the on the point of view.
>> unless I misunderstand something which is fairly possible.
>> On Wed, Feb 13, 2013 at 3:13 PM, Alex Malyushytskyy
>> <alexmalvtk at gmail.com> wrote:
>>> Check that you window does not have anti-aliasing
>>> In C++ and mentioned above example it is set with line :
>>> I am not sure that
>>> works as expected at least at my vtk version.
>>> Initiating selection over sphere and over bacjground always prints
>>> "Selection has 2 nodes",
>>> Even though if it were supposed to select cells I would expect it to
>>> be 3 nodes cause sphere is built from triangles.
>>> On Wed, Feb 13, 2013 at 12:26 PM, -Daniel- <ich_daniel at habmalnefrage.de> wrote:
>>>> I included the following line
>>>> But this solved not the problem. My selected cells are still invisible. (but
>>>> nodes founded..)
>>>> View this message in context: http://vtk.1045678.n5.nabble.com/Selected-cells-not-visible-tp5718419p5718506.html
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