Function rectree2svg::get_chemin_sp

pub fn get_chemin_sp(
    x1: f32, 
    y1: f32, 
    width1: f32, 
    height1: f32, 
    x2: f32, 
    y2: f32, 
    width2: f32, 
    height2: f32
) -> Path

Draw a square pipe path between x1,y1 ad x2,y2