horSun K

Aizatulin
Sure

In the example file the length in "resample1" is 24 (so probably you have already turned it down to something like 1 or less). If you look at your curve, it has now a higher point density and the points are not on a straight line and all points have quite smooth corners, which means, that the angle between tangents of neighbour points are small. This will affect the pathdeformer, because it is using tangents to transform the geometry to the path (very short explanation for sure).

yes,that makes sense,any way thanks a lot.

horsun

Aizatulin
The smoothness of the pathdeformer depends on the attributes of the curve. So probably you resample your curve (with subdivisions on) or with more points. Hard to say, maybe you can share your file.

you are right,i low down the resample length,it's turning to smooth,i didnt get why the resample length can effect the smooth,but it actually fixed the smooth.i upload the file if you interested.

Aizatulin
The smoothness of the pathdeformer depends on the attributes of the curve. So probably you resample your curve (with subdivisions on) or with more points. Hard to say, maybe you can share your file.

you are right,i low down the resample length,it's turning to smooth,i didnt get why the resample length can effect the smooth,but it actually fixed the smooth.i upload the file if you interested.