Cap top and buttom

[jiweigang1]

i use ExtrudeShape and CreateRibbon  to make coustom mesh

 

but i cant cap the top and buttom

 

how can i do  it ? , thanks!

[jerome]

I didn't implement this because I thought this would be too many parameters to handle and because it's doable in another way :

 

well, when you extrude a 2D shape, you pass a path of Vector3 describing this shape, don't you ?

This path  could be used with a ribbon to build a 2D plain shape (just give this path and the right offset or null, it should work).

This plane ribbon will be the cap.

Then you have to rotate it and translate it to the first (and last) point of the curve used for extrusion.

 

I have to admit it's not straight forward 

 

Maybe these extra parameters should be added in extrusion... let me know people

[jerome]

Another simpler way could be this one :

use the CustomExtruder

make a curve with the first and second point at the same position

make a scaleFunction with this condition : if i == 0 then return 0 else return scaleValue;

 

so the shape will be scaled to zero, reduced at a point for the first curve position, and then scaled to scaleValue ... but as your curve two first points are at the same position, it should cap your extruded shape

[jiweigang1]

 its too difficult for me

can you give me a example？

thank you very much

 

 i will be easy if i use 3dmax

 i think  it should have a  Cap  parameter

[jerome]

Ok, i'll probably add an extram parameter cap :

0 = none

1 = cap on start

2 = cap on end

3 = both capped

[jerome]

here is the general principle : http://www.babylonjs-playground.com/#LG3GS#7