Created
March 5, 2021 19:30
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Renderer performance test
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| { | |
| "$schema": "https://vega.github.io/schema/vega/v5.json", | |
| "description": "An animated scatterplot with N points", | |
| "width": 500, | |
| "height": 300, | |
| "autosize": "none", | |
| "signals": [ | |
| { | |
| "name": "t", | |
| "value": 0, | |
| "on": [ | |
| { | |
| "events": {"type": "timer", "throttle": 33}, | |
| "update": "(now() / 1000)" | |
| } | |
| ] | |
| }, | |
| { | |
| "name": "N", | |
| "value": 1000, | |
| "bind": {"input": "range", "min": 10, "max": 10000} | |
| } | |
| ], | |
| "data": [ | |
| { | |
| "name": "points", | |
| "transform": [ | |
| {"type": "sequence", "start": 0, "stop": {"signal": "N"}}, | |
| {"type": "formula", "expr": "random() * 3.1415926", "as": "u"}, | |
| {"type": "formula", "expr": "random() * 3.1415926", "as": "v"} | |
| ] | |
| } | |
| ], | |
| "marks": [ | |
| { | |
| "type": "symbol", | |
| "from": {"data": "points"}, | |
| "clip": true, | |
| "encode": { | |
| "enter": { | |
| "fillOpacity": {"value": 0.1}, | |
| "fill": {"value": "#1f77b4"}, | |
| "size": {"value": 10} | |
| }, | |
| "update": { | |
| "x": { | |
| "signal": "(cos(datum.v + t * 2.1) + sin(datum.u + t)) / 2 * 250 + 250" | |
| }, | |
| "y": { | |
| "signal": "(cos(datum.v + t) + sin(datum.u + t * 3.3)) / 2 * 150 + 150" | |
| } | |
| } | |
| } | |
| } | |
| ] | |
| } |
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