fil / d3-inertia Goto Github PK

The planets example sort of works, but it's not the end of the story:

• check all mobile gestures (see also #3)
• allow panning when outside the sphere (??)

it should be easy to unset inertia

When letting go of the drag, there seems to be a momentary pause in the motion before initiating the inertia decay. Here's an example with the globe rotation:

currently the accumulation of movement is kept for a while even if we stop the mouse

• not having to set window.projection
• not having to set window.versor
• properly dispose of the process when the cell is re-executed

https://beta.observablehq.com/@fil/using-d3-inertia-with-observable

it will help default rotation to take over in e.g.
https://bl.ocks.org/Fil/02e6d4c63ab52d202ca9d922b4b9000f

as per d3/d3-drag#27 (comment) ; a starting point might be https://bl.ocks.org/Fil/a034e32156b7b25ee9054c1bc50dc0ca without the fancy & random stuff

as per d3/d3-drag#27 (comment)

currently there is a mismatch between the d3-drag component of d3 and the standalone d3-drag

see https://bl.ocks.org/HarryStevens/8c9eba0905777a6ea778ebfc16f4d743

issue 1 is solved by adding if (inertia.timer) inertia.timer.stop();
http://blockbuilder.org/Fil/bf64676d0495518d98fffa21df46d0f0

and adapt the cursor

• canvas basic (https://bl.ocks.org/Fil/f48de8e9207799017093a169031adb02)
• canvas in @observablehq (https://beta.observablehq.com/@fil/translucent-earth)
• svg1 eclipses (https://bl.ocks.org/Fil/63366253a5d2f00640c15b096c29a38c)
• svg2 ? floating landmasses (https://bl.ocks.org/Fil/02e6d4c63ab52d202ca9d922b4b9000f/)
• simple webgl
• webgl+svg composite (maybe https://visionscarto.net/maps/planets/?planet=Pluto when it's finished)
• include non-orthographic projections

d3-inertia currently depends on versor ^0.1, which results in a download of versor 0.1.2. However, that version of versor incorrectly specifies its package.json file, by specifying module and jsnext:main as src/versor.js. No such file exists for that version; they should be pointing instead towards src/index.js (or instead src/index.js should have been src/versor.js).

This actually does not matter for many cases, since d3-inertia's usage of versor under the hood uses the bundled versions in the dist folder. However, some toolchains like Vite need this field to be correctly specified to avoid unnecessary bundling. Vite gives the following error when trying to run yarn start:

node_modules/vite/dist/node/chunks/dep-63d4bd14.js:43786:10: error: [plugin: vite:dep-pre-bundle] Failed to resolve entry for package "versor". The package may have incorrect main/module/exports specified in its package.json:

I thought it would be as simple as requiring d3-inertia to use versor 0.2.0, but this did not work when I tried it out because versor 0.2.0 has type: module in its package.json and thus the require statement in d3-inertia's minified file fails. So I'm not sure what the best solution is.

If this issue occurs for anyone else, a temp fix for d3-inertia users is to use patch-package after just renaming versor 0.1.2's src/index.js to src/versor.js.

@vasturiano

Btw, I've noticed one of the disorienting things about the versors globe rotation is that it can easily get turned sideways and upside down. I think maintaining a north-up orientation could improve the interaction. This example https://www.jasondavies.com/maps/zoom/ has a "north up" mode, but that's only for the programmatic jumps, not the rotation drag interaction. Do you think it's even possible to enforce a north-up view, or is it a conflicting restriction with the pan interaction?

two fingers gestures can send the script to infinity (or huge or NaN) velocities, which is definitely not good™