[vtkusers] Making custom data for a regular 3d voxel grid

[Andras Lasso]

To learn VTK, I would also strongly recommend to read the VTK textbook, cover to cover, a few times. It is available here:
http://www.vtk.org/vtk-textbook/

Andras

-----Original Message-----
From: vtkusers [mailto:vtkusers-bounces at vtk.org] On Behalf Of Bill Lorensen
Sent: Wednesday, August 30, 2017 3:38 PM
To: Daniel Minsky <minsky at tandar.cnea.gov.ar>; VTK Users <vtkusers at vtk.org>
Subject: Re: [vtkusers] Making custom data for a regular 3d voxel grid

Daniel,

Yes, the learning curve is high. But once you get the basics, you'll see that VTK  has a consistent architecture. So learning a few concepts will go a long way. I suggest you work your way through the new VTK Examples:
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Florensen.github.io%2FVTKExamples%2Fsite%2FCxx%2F&data=02%7C01%7Classo%40queensu.ca%7Ca1af1ab68d4f4dc1c93d08d4efdea9f6%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636397186987547234&sdata=oiB65DtMLDTU%2F22WNdJ%2FfpPOkmM%2BdgwRuFjQX4rFkQQ%3D&reserved=0

You can build them all, or one at a time. Making small changes to a working example is great way to learn a new "language." For the most part, the examples have a consistent style and flow.

Welcome to VTK,

Bill


On Wed, Aug 30, 2017 at 2:55 PM, Daniel Minsky <minsky at tandar.cnea.gov.ar> wrote:
> Hi,
> many thanks. I could manage to get the volumetric image with your help 
> and other mailing list members. The VTK lerning curve seems to be very hard.
> Kind regards,
> Daniel
>
>
>> Take a look at this example:
>> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore
>> nsen.github.io%2FVTKExamples%2Fsite%2F%2FCxx%2FImages%2FImageImport%2
>> F&data=02%7C01%7Classo%40queensu.ca%7Ca1af1ab68d4f4dc1c93d08d4efdea9f
>> 6%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636397186987547234&sda
>> ta=Bj%2Ff%2Bc8AIpCuVV9%2FdtrtqLUhl%2FfFc%2BKytwnTN42END8%3D&reserved=
>> 0
>>
>> Note the use of SetInputData rather that SetInputConnection.
>>
>> Bill
>>
>> On Tue, Aug 29, 2017 at 1:20 PM, Daniel Minsky 
>> <minsky at tandar.cnea.gov.ar> wrote:
>>> Dear all,
>>>
>>> I am very new to VTK, I could follow the C++ examples to read an 
>>> image from disk, however I would like to generate the image inside 
>>> my program with some voxel data coming from other object in my code.
>>>
>>> I would like to generate a vtkImageData with a regular 3d voxel grid values.
>>> I do have all the unsigned_char 100x200x40 voxels in a unsigned char array.
>>> All voxels are cubic with 1cm side.
>>>
>>> How do I feed the vtkImageData object with my data array?
>>>
>>> How do I use the vtkImageData? The vtkImageData does not have the
>>> GetOutputPort() method to feed a Mapper and I am very confused about 
>>> the correct pipeline.
>>>
>>> My final goal is to make a 3d image of the data within an upper and 
>>> lower thresholds and an arbitrary plane slice.
>>>
>>> Kind regards,
>>>
>>> Daniel
>>>
>>> --
>>> Dr. Daniel Minsky
>>> Investigador CONICET - CNEA
>>> Departamento de Física
>>> Centro Atómico Constituyentes - Comisión Nacional de Energía Atómica 
>>> Av. Gral. Paz 1499 (B1650KNA) San Martín - Pcia. de Buenos Aires - 
>>> Argentina
>>> Tel: +54 11 6772 7913
>>> Fax: +54 11 6772 7121
>>> e-mail: minsky at tandar.cnea.gov.ar
>>>
>>>
>>> _______________________________________________
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>>
>>
>>
>> --
>> Unpaid intern in BillsBasement at noware dot com
>>
>
>



--
Unpaid intern in BillsBasement at noware dot com _______________________________________________
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