"frame"

[ "frame", "name", [[x1,y1], [x2, y2], ...], tension ]

Object to mark the boundary of a system.

• "name" not used
• [...] list of coordinate pairs, support points for the line
• tension (optional, default: 3): Tension of the spline. High values give sharp corners, low values give round corners.

Example

[ 
  [ "grid", "", "", -1, 9, -1, 3, 40],
  [ "frame", "", [[0,0], [2,0], [2,1], [0, 1]], 20],
  [ "point", "", [0,0]],
  [ "point", "", [2,0]],
  [ "point", "", [2,1]],
  [ "point", "", [0,1]],
  [ "frame", "", [[3,0], [5,0], [5,1], [3, 1]],3 ],
  [ "point", "", [3,0]],
  [ "point", "", [5,0]],
  [ "point", "", [5,1]],
  [ "point", "", [3,1]],
  [ "frame", "", [[6,0], [8,0], [8,1], [6, 1]],1 ],
  [ "point", "", [6,0]],
  [ "point", "", [8,0]],
  [ "point", "", [8,1]],
  [ "point", "", [6,1]],
  [ "label", "tension = 20", [0.1,0.5]],
  [ "label", "tension = 3", [3.1,0.5]],
  [ "label", "tension = 1", [6.1,0.5]]
]

[ 
  [ "grid", "", "", -2, 8, -3.5, 4, 30],
  [ "beam", "", [-1, 1.2], [7, 1.2], 0.2],
  [ "fix12", "A", [1,-2], 0, "show" ],
  [ "fix12", "B", [6,-2], 0, "show" ],
  [ "bar", "1", [1,-2], [0,1], "show" ],
  [ "bar", "2", [1,-2], [2,1], "show" ],
  [ "bar", "3", [6,-2], [6,1], "show" ],
  [ "force", "F", [3,1], [3,-0.5] ],
  [ "forceGen", "F_1", [1,3]],
  [ "momentGen", "M_1", [3.5,3.0]],
  [ "frame", "", [[-1.5,1.5], [7.5,1.5], [7.5,-1], [-1.5, -1]], 10 ]
]