How to draw a 3D structure which is semicircular and cross section is triangle

[d04222016]

Define a orbit and the cross section is triangle, if we can use code to draw this ?

[msaygin]

Hi, Guo

Although, I can’t get the specific kind of structure you need to draw, but I think you can try to define it via equations. Go to Structures->Custom. In the Custom tab set “make nonsymmetric” and write down corresponding equations.

Mikhail.

[d04222016]

Hi,Mikhail
Do you have any kind of example for structure corresponding equations?

Thanks

[gsun]

here are some examples:
Structures - Custom (Optical)
Structures - Surface (Optical)
Structures - Waveguide
Spirals
Silicon with moth-eye antireflection coatings

[skim]

Hi @d04222016
I think the structure you mentioned can be more easily constructed using a planarsolid object. We have a very nice post about the use of planarsolid for creating complex structures.

Some more helpful instructions in creating an arbitrary geometry using planar solid

[image] Divide structure into M layers. Divide the surface of each layer into N segments (facets). Number each points 1,2,3,…… Record the x, y, z coordinate of each points. Define the faces by grouping the corner points ** for example, for the highlighted facet has 4 corners and can be defined as [N+1, N+2, 2N+2, 2N+1] Note the top surface is made up by triangles so each facet has 3 corner points Note there will be a bottom surface as well similar to the top surface not seen in the figure. On…

I created a script file (4098_arc_triangle.lsf ) for an arc with a triangular cross section.

[d04222016]

Thanks, I also draw the sample structures,now.