Comments (7)
So I took about an hour and threw together a benchmark that pits d3.geo.length
against an "optimized" version of length
that doesn't reassign listener methods.
http://bl.ocks.org/chrisuehlinger/5ab433e12fbfa6c7d9b87be1a0c7e6f7
In Chrome I saw speedups ranging from 1.5x to 2.1x. In Mac Safari the gains were much smaller, 0.98x-1.15x. In Firefox it was about 1.1x-1.3x.
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Any thoughts on this? It sounds like it could be a pretty clear win.
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I’ve for this assuming that it tests well in real-world usage (like rendering a rotating orthographic projection). But it’s also a fair amount of work (given the complexity of clipping), and it might be a better long-term strategy to start work on a new composable graphics pipeline.
That said I’ve not started work on that, either… So if you want to take a crack at an optimization I see no harm in it. 😄
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Related, it seems that string concatenation (string +=) is now faster than array.join, so perhaps PathString should be reimplemented. See also d3/d3-path#9.
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You've mentioned the composable graphics pipeline a couple times, any idea when you might want to start work on it?
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I started back in mid 2014 but I haven’t had time to work on it since. 😦 Here are two examples:
https://bl.ocks.org/mbostock/e2a20d86124693ef0f93
https://bl.ocks.org/mbostock/e48a00d4db5c3b042145
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I recall that there was a branch on the old D3 repo (https://github.com/d3/d3/tree/graphics-pipeline) which was moving in this direction. Do you think it would be valuable to try and manually "rebase" this branch into d3-geo to see what kinds of questions it raises?
Also, should we make a new issue to keep track of this project?
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Related Issues (20)
- d3.geoBounds returning confusing output HOT 1
- How can I clamp a geodesic to between a max/min latitude? HOT 1
- fit-test.js Remove duplicate test HOT 1
- Geojson to SVG offset HOT 1
- Geojson to SVG offset
- Cannot import d3-geo in node with typescript HOT 8
- Geographic or Geodetic HOT 1
- D3 uses GeoJSON to represent geographic features in JavaScript HOT 2
- postclip with polygon path maybe... HOT 10
- Error [ERR_REQUIRE_ESM]: Must use import to load ES Module / require() of ES modules is not supported HOT 2
- geoAzimuthalEqualArea not rendering straight lines HOT 2
- clipCircle's precision is too low
- Configurable precision for d3.geoPath
- Mercator. Getting boundary values by longitude HOT 2
- Mercator with rotate. Incorrect conversion from projection to geographic coordinates HOT 3
- Сonvert geographic points considering antimeridian and pole HOT 1
- geoContains function doesn't seem to handle MultiPolygons HOT 9
- path.bounds should return numbers even when input coordinates are strings
- [Question] API for chekcing if point is in view or not given projection HOT 3
- Mercator Map centered on the Pacific HOT 1
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