Code is https://codepen.io/wangjia184/pen/jOdQGOV.
I have made a 3D heatmap using three.js.
I am trying to show sectional plane, but as you see, in both ends there are some issues. How should I fix that?
What about adding a ring of additional vertices around the plane geometry, like the blue ones in the illustration? Then just move these extra vertices towards ground zero – this will close the openings.
I used a similar approach here:
https://codepen.io/boytchev/full/mdaKJQR
