Topic: to draw perpecdicura rectangle on polyline

[dussla]

freinds
sorry many ask  always ~
i met   new problem
that is   to draw  perepcdicura rectangle  on polyline  ,   when i  put a certain  point  on polyline
i tested many perpecdicura routines
but all is failed
if you see  atteched file , you can understand ~
sorry ask~

[CAB]

I do very little 3D drawing but try the Command rotate3d.

[dussla]

yes
cab , thank you for answer

but that is  not 3d
that is  2d window frame  on curve polyline ~
 

[DEVITG]

yes
cab , thank you for answer

but that is  not 3d
that is  2d window frame  on curve polyline ~
 

[gile]

Hi,

Look at the vlax-curve-getFirstDeriv function:

Code: [Select]

(angle '(0. 0. 0.) (vlax-curve-getFirstDeriv curve paramAtPoint))returns the angle of the curve tangent at the specified param/point.