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BrianOBrien

Joined: 05 Feb 2012
Posts: 2

 Posted: Sun Feb 05, 2012 9:53 pm    Post subject: May I ask for some starting help? I want to make a lens that is a cover of an LCD Display Segment. I wish I could attach a bitmap image to this posting to describe the shape.... The lens cover is rectangular with the left and right side being semi circles. Top View. /-----------\ | | \-----------/ Side View /----------\ ------------ I would imaging that this would be like revolving a log curve around the x-axis and reflecting it at width / 2. How do I go about doing that? Or could I define a bezier conic and revolve that about an axis?
nextstep

Joined: 06 Jan 2007
Posts: 539

Posted: Sun Feb 05, 2012 11:28 pm    Post subject:

Hi,
I'm not sure about the right model you're looking for ( in the side view, I don't understand the bottom line "------------"). You can however try this isosurface at different grid resolution (61 for example) :

 Code: Name: Lens F(): -if((abs(z)<0.5) & y<0,-((x*x + (y/0.1)*(y/0.1) + z*z - 1) ) ,(x^10 + y^10 +z^10 - 200000)) [x]: -1 , 1 [y]: -1 , 2 [z]: -.6 , .6 ;

Save it as .k3ds file and load it in K3DSurf
NB: cut the "& y<0" part of the formula to have a shape like the top-view
_________________
Cheers,
Abderrahman
nextstep

Joined: 06 Jan 2007
Posts: 539

 Posted: Sun Feb 19, 2012 12:37 pm    Post subject: Hi, Top View Uploaded with ImageShack.us Side View: Uploaded with ImageShack.us Uploaded with ImageShack.us When we cut the "& y<0" part of the formula: Uploaded with ImageShack.us_________________Cheers, Abderrahman
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