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                    "text": "gate closes when threshold crossed"
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                    "text": "sending through float box is important because upon gate closing it sends twice, therefore producing 0 as the outcome of the derivative ->\n(= for example speed becomes 0. and doesn't float at the last value when the gate closes)"
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                    "text": "gate opens only for one frame when centroid comes back and sends the current x and y positions twice into the derivative calculator so that the first 'speed' calculation doesn't jump from last centroid position and outputs 0 instead"
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                    "text": "f 1."
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                    "text": "f 1."
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                    "numoutlets": 3,
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                    "text": "change 1"
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                    "text": "- 0."
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                    "numoutlets": 2,
                    "outlettype": [ "float", "float" ],
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                    "text": "t f f"
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                    "numinlets": 1,
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                    "text": "accel\n(2nd derivative)"
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            },
            {
                "box": {
                    "annotation": "speed vector y",
                    "comment": "",
                    "hint": "speed vector y",
                    "id": "obj-27",
                    "index": 9,
                    "maxclass": "outlet",
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                    "numinlets": 1,
                    "numoutlets": 0,
                    "patching_rect": [ 1553.0, 765.0, 55.0, 75.0 ],
                    "text": "centroid validity flat\n0 = no centroid"
                }
            },
            {
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                    "annotation": "speed vector y",
                    "comment": "",
                    "hint": "speed vector y",
                    "id": "obj-22",
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                    "maxclass": "outlet",
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                    "text": "> 35."
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                    "maxclass": "comment",
                    "numinlets": 1,
                    "numoutlets": 0,
                    "patching_rect": [ 95.0, 765.0, 83.0, 20.0 ],
                    "text": "sensor values"
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            },
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                    "annotation": "centroid x",
                    "comment": "",
                    "id": "obj-18",
                    "index": 1,
                    "maxclass": "outlet",
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                    "numoutlets": 0,
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                    "text": "scalar displacement = absolute displacement per sample"
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            },
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                    "text": "vectorial displacement in x resp. y direction per sample"
                }
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                    "numoutlets": 0,
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                    "text": "vector y"
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                    "numinlets": 1,
                    "numoutlets": 0,
                    "patching_rect": [ 933.0, 770.0, 51.0, 20.0 ],
                    "text": "vector x"
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                    "maxclass": "comment",
                    "numinlets": 1,
                    "numoutlets": 0,
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                    "text": "scalar"
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                    "text": "- 0."
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                    "numoutlets": 2,
                    "outlettype": [ "float", "float" ],
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                    "text": "t f f"
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                    "numinlets": 2,
                    "numoutlets": 1,
                    "outlettype": [ "" ],
                    "patching_rect": [ 1161.0, 624.0, 153.0, 22.0 ],
                    "text": "expr sqrt($f1*$f1 + $f2*$f2)"
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            },
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                    "numinlets": 2,
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                    "text": "- 0."
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                    "text": "t f f"
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                    "hint": "speed scalar",
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                    "hint": "speed vector x",
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                    "hint": "speed vector y",
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                    "text": "force change\n(=centroid mass growth speed)"
                }
            },
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                    "annotation": "centroid mass growth speed = force change",
                    "comment": "",
                    "hint": "centroid mass growth speed = force change",
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                    "numoutlets": 0,
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                    "text": "weighted avg adapted to grid"
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                    "numoutlets": 0,
                    "patching_rect": [ 620.0, 376.0, 37.0, 20.0 ],
                    "text": "index"
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                    "text": "centroid mass"
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                    "maxclass": "comment",
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                    "numoutlets": 0,
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                    "text": "centroid y"
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                    "numoutlets": 0,
                    "patching_rect": [ 270.0, 770.0, 61.0, 20.0 ],
                    "text": "centroid x"
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            },
            {
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                    "numoutlets": 1,
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                    "text": "/ 1."
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                    "text": "list.sum"
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                    "numoutlets": 2,
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                    "text": "grid size from list"
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                    "numoutlets": 1,
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                    "text": "vexpr $f1 * $f2"
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