<div dir="ltr"><div>Hello Sidharta,<br><br><br></div>See answers inline below:<br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 10, 2017 at 11:10 AM, sidharta <span dir="ltr"><<a href="mailto:sidharta.gupta93@gmail.com" target="_blank">sidharta.gupta93@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Froncois<br>
<br>
Thank you for your reply. The reason why I need this dome is because it<br>
mimics a burr (drill bit). So, I extract densities in a cubic volume and<br>
then mask this cube with the dome, which essentially would give me an image<br>
which shows what densities will the burr encounter while drilling. The<br>
ellipse object seems to be the key here but I don't know how to transform.<br>
The rotation would be identity but the translation is the key. So following<br>
is a pseudo code with I came up with, correct me if I am wrong:<br>
<br>
1. Make an ellipse object of radius = 2 * edge length of the cube.<br></blockquote><div>Don't you mean that the ellipse radius is 1/2 of the edge length of the cube?<br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
2. With SpatialObjectToImageFilter, set size of the image as the edge length<br>
of the cube (in all dimensions). Then transform the object (ellipse) so that<br>
the center of the ellipse lies at the origin of the image. This is what I am<br>
not able to figure how to achieve.<br></blockquote><div> <br></div><div>You probably don't want the center of the image to lie at the origin, but in the center of your edge if I understand correctly, at least for 2 of your 3 dimensions, and at the origin for the 3rd dimension to obtain a half-dome.<br></div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Kindly let me know what you think<br>
<br>
Regards,<br>
Sidharta<br>
<br>
<br>
<br>
--<br>
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