spline
Arguments:
- x0[%],y0[%],u0[%],v0[%],x1[%],y1[%],u1[%],v1[%],_opacity,_color1,...
Description:
Draw specified colored spline curve on selected images (cubic hermite spline).
Default values:
opacity=1 and color1=0.
Example of use:
$ gmic
image.jpg repeat 30 spline {u(100)}%,{u(100)}%,{u(-600,600)},{u(-600,600)},{u(100)}%,{u(100)}%,{u(-600,600)},{u(-600,600)},0.6,255 done

Command:
image.jpg repeat 30 spline {u(100)}%,{u(100)}%,{u(-600,600)},{u(-600,600)},{u(100)}%,{u(100)}%,{u(-600,600)},{u(-600,600)},0.6,255 done