<div dir="ltr">Thanks all for the feedback and use-cases. I have added this to the list of features and will discuss this with the team members on possible solutions.<div><br></div><div>Thanks,</div><div>Aashish</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 25, 2015 at 5:21 AM, Simon ESNEAULT <span dir="ltr"><<a href="mailto:simon.esneault@gmail.com" target="_blank">simon.esneault@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello,<br><br>We also have a need for such a feature, in order to display a virtual prosthesis within the patient anatomy.<br>We ended up proposing two solutions for our customers :<div>- Render a full opaque surface within the volume rendering (<a href="http://picpaste.com/pics/solution1.1448446727.png" target="_blank">http://picpaste.com/pics/solution1.1448446727.png</a>)</div><div>- Render a translucent surface on top of the volume rendering using a layer system with 2 renderers on the same viewport (<a href="http://picpaste.com/pics/solution2.1448446818.png" target="_blank">http://picpaste.com/pics/solution2.1448446818.png</a>)</div><div><br></div><div>But neither of the solution are completely satisfying as we would also like to blend a translucent mesh in the middle of the volume.<br><br>I can provide some data if it can help to develop this feature.<br><br>Have a good day,<br>Simon</div></div><div class="gmail_extra"><div><div class="h5"><br><div class="gmail_quote">2015-11-24 2:52 GMT+01:00 Marcus D. Hanwell <span dir="ltr"><<a href="mailto:marcus.hanwell@kitware.com" target="_blank">marcus.hanwell@kitware.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">We have also had a number of tomviz users ask if this is possible, and<br>
they have similar requirements to those stated above. We often have<br>
the overall structure rendered as a volume, and are looking at<br>
distinct isosurfaces, or in future segmented features, where the ideal<br>
would be to offer a translucent surface within the volume.<br>
<div><div><br>
On Mon, Nov 23, 2015 at 7:05 PM, David Cole via vtkusers<br>
<<a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a>> wrote:<br>
> Me too.<br>
><br>
> We want to visualize structures (natural and artificial) inside of volume<br>
> renderings of CT scans, mostly of people.<br>
><br>
> Works great without using translucent polydata. As soon as you make any of<br>
> it translucent, it just sort of disappears all the way... Very confusing<br>
> when you first encounter it.<br>
><br>
> So... +1. And let me know what I can do to test/help out...<br>
><br>
><br>
> David C.<br>
><br>
><br>
><br>
> On Monday, November 23, 2015, Xabi Riobe <<a href="mailto:xabivtk@gmail.com" target="_blank">xabivtk@gmail.com</a>> wrote:<br>
>><br>
>> Here are at least 2 examples:<br>
>><br>
>> - medical data : the body is voxelized and you have the segmentation of<br>
>> organs/bones/vessels<br>
>> - material : cement, rock structure voxelized, with segmentation of the<br>
>> different layers, components<br>
>><br>
>> in both cases you may want to superimpose the surfaces and play with<br>
>> transparency to highlight an entity but still seeing the inside of it,<br>
>> or you can have tools with polygonal surface that you will insert in an<br>
>> easier way into the volume if they are transparent, or just a clipping plane<br>
>> that you want to be transparent to place it with precision inside the volume<br>
>> before doing the clip...<br>
>><br>
>> I'm glad to hear it may fit in a todo list :)<br>
>> Let me know if someone starts working on this, i may give any kind of help<br>
>> !<br>
>><br>
>> Thanks<br>
>><br>
>><br>
>> 2015-11-23 21:40 GMT+01:00 Aashish Chaudhary<br>
>> <<a href="mailto:aashish.chaudhary@kitware.com" target="_blank">aashish.chaudhary@kitware.com</a>>:<br>
>>><br>
>>> On Mon, Nov 23, 2015 at 3:14 PM, Xabi Riobe <<a href="mailto:xabivtk@gmail.com" target="_blank">xabivtk@gmail.com</a>> wrote:<br>
>>>><br>
>>>> Hi Aashish,<br>
>>>><br>
>>>> For example, if you render a volume with vtkGPUVolumeRayCastMapper, or<br>
>>>> vtkFixedPointVolumeRayCastMapper, and you put inside a sphere rendered with<br>
>>>> vtkPolyDataMapper, as soon as you change the sphere actor opacity the depth<br>
>>>> notion is lost, with the sphere appearing behind the volume.<br>
>>><br>
>>><br>
>>> Thanks for clarification. Yes, this is not currently supported (I am not<br>
>>> aware and we don't handle this in the mapper). This is a interesting use<br>
>>> case. I will add it to the feature request and will get back to you. Just<br>
>>> curious, what would be a real world example use-case you have for this<br>
>>> feature? Can you share bit more domain information (medical / scientific<br>
>>> etc.).<br>
>>><br>
>>> - Aashish<br>
>>><br>
>>><br>
>>><br>
>>> --<br>
>>> | Aashish Chaudhary<br>
>>> | Technical Leader<br>
>>> | Kitware Inc.<br>
>>> | <a href="http://www.kitware.com/company/team/chaudhary.html" rel="noreferrer" target="_blank">http://www.kitware.com/company/team/chaudhary.html</a><br>
>><br>
>><br>
><br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div></div></div><span class="HOEnZb"><font color="#888888">-- <br><div><div dir="ltr"><div>------------------------------------------------------------------<br>Simon Esneault<div>Rennes, France<br>------------------------------------------------------------------</div></div></div></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><font face="trebuchet ms, sans-serif"><i>| Aashish Chaudhary <br>| Technical Leader <br>| Kitware Inc. <br></i></font><div><i><font face="trebuchet ms, sans-serif">| </font><a href="http://www.kitware.com/company/team/chaudhary.html" target="_blank">http://www.kitware.com/company/team/chaudhary.html</a></i></div></div></div>
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