If I have a Bezier curve, how could I make it have width, and how to get vertices of its contour? My attempt: I have plot a Bezier curve by using one start point, two control points and one end points, their coordinates are: p0_ = [11, -0.45] p1_ = [13.5, -0.45] p2_ = [13.5, -4] p3_ = [16, -4] the figure is as shown below: But I want to make it have width, lets say width=0.7, then I change the original coordinates into: width = 0.7 p01_ = [11, -0.45 + width / 2] p11_ = [13.5, -0.45 + width / 2] p21_ = [13.5, -4 + width / 2] p31_ = [16, -4 + width / 2] p02_ = [11, -0.45 - width / 2] p12_ = [13.5, -0.45 - width / 2] p22_ = [13.5, -4 - width / 2] p32_ = [16, -4 - width / 2] And then I plot new figure, I find it looks quite strange. It is not uniform. Obviously, this is not the one I want, I guess the coordinates are wrong, But I do not know how to get correct one? What I want is like the one shown below: You see, everywhere is uniform. Continue reading...