it can be a full svg, or url to svg, or datauri, or svg path, or svg path 'd' attribute
number of sample points (per polyline)
(0.0~1.0) rotate the samples. you'll get 1 additional point for non-0 non-1 values
proportionally resize graphics to fit in this box: xmin,ymin,xmax,ymax
additional translation for fine tuning position: x,y
maximum distance any point can deviate from its true position. leave empty or '0' for no downsample. make sure #samples is high before using this box
new sample count(s):
leave empty for no rounding