beginfig(0); nib_width:=100; nib_thick:=10; rotation:=40; pen mypen; path p; z0 = (-nib_width/2,0); z1 = (x0, nib_thick); z2 = (x1+nib_width, y1); z3 = (x0+nib_width, y0); p = z0--z1--z2--z3--cycle; fill p withcolor green; mypen = makepen p rotated rotation; clearxy; z0 = (x1+150, 0); z1 = (0, y0+250); z2 = (x1+250, y1+250); z3 = (x2+250, y1); z4 = (x2, y0); pickup mypen; draw z0..z1..z2..z3..z4 withcolor white; endfig; end