Pipes

Nodes in this sample use Shape.geometryString to determine their shape. You can see more custom geometry examples and read about geometryString on the Geometry Path Strings Introduction page.

As a part's unconnected port (shown by an X) comes close to a stationary port with which it is compatible, the dragged selection snaps so that those ports coincide. A custom DraggingTool, called SnappingTool, is used to check compatibility.

Dragging automatically drags all connected parts. Hold down the Shift key before dragging in order to detach a part from the parts it is connected with. These functionalities are also controlled by the custom SnappingTool.

Use the GraphObject.contextMenu to rotate, detach, or delete a node. If it is connected with other parts, the whole collection rotates.

Diagram Model saved in JSON format:

{ "class": "go.GraphLinksModel",
  "copiesArrays": true,
  "copiesArrayObjects": true,
  "linkFromPortIdProperty": "fid",
  "linkToPortIdProperty": "tid",
  "nodeDataArray": [
{"key":0, "category":"Comment", "text":"Use Shift to disconnect a shape", "loc":"0 -13"},
{"key":1, "category":"Comment", "text":"The Context Menu has more commands", "loc":"0 20"},
{"key":2, "category":"Comment", "text":"Gray Xs are unconnected ports", "loc":"0 -47"},
{"key":3, "category":"Comment", "text":"Dragged shapes snap to unconnected ports", "loc":"0 -80"},
{"key":11, "geo":"F1 M0 40 L0 30 Q0 0 30 0 L40 0 40 20 30 20 Q20 20 20 30 L20 40z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U2", "spot":"0.25 1 0.25 -0.5"} ], "loc":"-187.33333333333331 -69.33333333333331", "angle":0},
{"key":12, "angle":90, "geo":"F1 M0 40 L0 30 Q0 0 30 0 L40 0 40 20 30 20 Q20 20 20 30 L20 40z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U2", "spot":"0.25 1 0.25 -0.5"} ], "loc":"-147.33333333333331 -69.33333333333331"},
{"key":21, "geo":"F1 M0 0 L60 0 60 20 50 20 Q40 20 40 30 L40 40 20 40 20 30 Q20 20 10 20 L0 20z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U4", "spot":"0 0.25 0.5 0.25"},{"id":"U2", "spot":"0.5 1 0 -0.5"} ], "loc":"-137.33333333333331 -9.333333333333314", "angle":0},
{"key":5, "geo":"F1 M0 0 L20 0 20 60 0 60z", "ports":[ {"id":"U6", "spot":"0.5 0 0 0.5"},{"id":"U2", "spot":"0.5 1 0 -0.5"} ], "loc":"-197.33333333333331 -19.333333333333314", "angle":0},
{"key":13, "angle":180, "geo":"F1 M0 40 L0 30 Q0 0 30 0 L40 0 40 20 30 20 Q20 20 20 30 L20 40z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U2", "spot":"0.25 1 0.25 -0.5"} ], "loc":"-147.33333333333331 30.666666666666685"},
{"key":14, "angle":270, "geo":"F1 M0 40 L0 30 Q0 0 30 0 L40 0 40 20 30 20 Q20 20 20 30 L20 40z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U2", "spot":"0.25 1 0.25 -0.5"} ], "loc":"-187.33333333333331 30.666666666666685"},
{"key":-7, "geo":"F1 M0 40 L0 30 Q0 0 30 0 L40 0 40 20 30 20 Q20 20 20 30 L20 40z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U2", "spot":"0.25 1 0.25 -0.5"} ], "loc":"-76.66666666666663 -8.666666666666657", "angle":0},
{"key":-8, "angle":90, "geo":"F1 M0 40 L0 30 Q0 0 30 0 L40 0 40 20 30 20 Q20 20 20 30 L20 40z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U2", "spot":"0.25 1 0.25 -0.5"} ], "loc":"-36.66666666666663 -8.666666666666657"},
{"key":-9, "angle":180, "geo":"F1 M0 40 L0 30 Q0 0 30 0 L40 0 40 20 30 20 Q20 20 20 30 L20 40z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U2", "spot":"0.25 1 0.25 -0.5"} ], "loc":"-36.66666666666663 31.333333333333343"},
{"key":-10, "angle":270, "geo":"F1 M0 40 L0 30 Q0 0 30 0 L40 0 40 20 30 20 Q20 20 20 30 L20 40z", "ports":[ {"id":"U0", "spot":"1 0.25 -0.5 0.25"},{"id":"U2", "spot":"0.25 1 0.25 -0.5"} ], "loc":"-76.66666666666663 31.333333333333343"}
],
  "linkDataArray": [
{"from":12, "to":11, "fid":"U2", "tid":"U0"},
{"from":5, "to":11, "fid":"U6", "tid":"U2"},
{"from":13, "to":21, "fid":"U2", "tid":"U2"},
{"from":14, "to":5, "fid":"U0", "tid":"U2"},
{"from":13, "to":14, "fid":"U0", "tid":"U2"},
{"from":-8, "to":-7, "fid":"U2", "tid":"U0"},
{"from":-9, "to":-8, "fid":"U2", "tid":"U0"},
{"from":-10, "to":-7, "fid":"U0", "tid":"U2"},
{"from":-10, "to":-9, "fid":"U2", "tid":"U0"}
]}