Hi! Welcome to this d3.js / numeric.js truss solver app. :3 Progress is on solver.html.
You can also see a working verson here.
n: node mode (create nodes by clicking and move nodes around by dragging)t: trusss mode (create trusses by dragging between nodes)f: force mode (create forces by dragging a force from a node)g: fixed mode (set a node as fixed joint by clicking on it)r: rolling mode (set a node as folling joint by clicking on it)s: snap to grid (useful for making nodes in straight lines or forces that go straight down)SHIFT+click: remove anything! (be careful, removing nodes removes all attached trusses
To print your work in JSON, you can use util.printString() in the console.