sarahbellum / canvas-flowmap-layer Goto Github PK

I was wondering how to add marker icons ie. png, htmlIcon etc. Is the feature under development.

Isn't it possible to change the thickness of the line in proportion to the amount of movement?

Any idea?

Thanks for advance.

Hi,

Not a JS dev here. I tried to run the main demo locally, but it fails to load config.js.

From what I can see, esri requires config.js to be publicly available right? If yes, is there a workaround this?

Cheers

I think we can get rid of our own custom animation functions and instead use dojo/fx/easing which appears to provide a host of functions to choose from. This could reduce the source code we have to maintain and provide users/devs with far more options.

If this dojo module works the way I think it does from my massive research spanning a whole 10 minutes, then I propose that we change the animationStyle property to accept any of the function names in this dojo module, e.g.:

new CanvasFlowmapLayer({
  animationStyle: 'quadIn' // string, can be any of the function names in dojo/fx/easing
});

In the layer source code I believe we can then alter values as needed by simply passing them into, for example:

easing.quadIn(2) // returns 4
easing.quadIn(4) // returns 16
// and so on

Thoughts?

To stay in line with recent changes in Leaflet.Canvas-Flowmap-Layer, the JSAPI v3 source code needs to be updated. See jwasilgeo#18 and PR jwasilgeo#20.

• support wrap-around past +/- 180 longitude
  • wrap-around code can be cleaned up and made to be toggle-able by devs
• Make animations an integral part of the custom layer
  • Optional
  • Add a method for developers to be able to toggle animations on/off (aka: start/stop)
  • Let devs configure animation properties: initial starting and offset values, equation for easing, symbology
  • Decide what the default animation equation and symbology will be
  • Default off? No, decided to keep it on by default to help developers more easily stumble upon this amazing feature.
• Support graduated line symbology
• Support graduated point symbology
• Support unique/categorical values point symbology
• Test with different O/D relationship types:
  • 1-to-many
  • 1-to-1
  • many-to-1
• Insert layer's <canvas> elements in a flexible way after any number of potential map image DOM nodes
• Documentation
• Clean up and/or add more samples?

Currently Canvas-Flowmap-Layer only works with JSAPI 3.x and extends esri/layers/GraphicsLayer. High-level summary:

• It manually inserts its own <canvas> elements into very specific places within the map in the DOM.
• It listens to several map events to know precisely when to clear and/or redraw its own <canvas> elements.
• It uses point graphics, but applies symbology so that they are "ghost graphics"; this is to enable click, mouse-over, etc. functionality that developers using the GraphicsLayer are already familiar with.

The paradigm for creating custom layers in JSAPI 4.x is clearly different than JSAPI 3.x. I'm opening this issue as a placeholder for investigating what it'll take to create a custom JSAPI 4.x layer that'll work in both a MapView and SceneView.

cc @ycabon